Tap switch for voltage regulator

Abstract

The tap switch comprises a base, the base comprises a bottom plate and side plates arranged on the two sides of the bottom plate, a fixing arm horizontally extending towards the inner side is arranged on the side plate on one side, a driving hole is formed in the fixing arm in a penetrating mode, an auxiliary driving shaft is inserted into the driving hole, and the auxiliary driving shaft is arranged on the side plate on the other side. A gear disc is rotationally installed above the bottom plate, a chain is arranged on the outer side of the gear disc in a meshed mode, the chain is stretched towards one side so as to be partially separated from the gear disc, a driving part is arranged on the inner side of the stretched position of the chain, the end of the auxiliary driving shaft is in transmission connection with the interior of the driving part, and a driving disc is fixedly arranged above the gear disc. The driving disc is provided with a main driving shaft and a transmission head, and the main driving shaft and the auxiliary driving shaft are both connected with a driving motor. Compared with an existing tap switch used in the voltage regulator, the voltage regulator tap switch has the advantages that the voltage regulator tap switch is connected with a plurality of driving motors, and even if a certain driving motor is damaged, the voltage regulator tap switch can work normally and is reliable.

Description

Technical Field

[0001] The invention belongs to the technical field of voltage regulating devices, and in particular relates to a tap switch for a voltage regulator. Background Art

[0002] A voltage regulator is an electrical device used to change the voltage connected to a load device. Its basic principle is that it has multiple transformer windings inside, and taps are led out from the transformer windings. By switching the taps connected to the electrical device, the voltage ratio can be changed, thereby achieving the purpose of voltage regulation.

[0003] In order to facilitate the rapid switching of the tap, a tap changer is usually used to control the tap individually. A drive disk connected to the tap transmission is provided inside the tap changer, and a drive motor that can drive the drive disk to rotate is connected to the outside of the tap changer. By controlling the drive motor, the tap can be switched, thereby realizing the voltage regulation function of the voltage regulator.

[0004] However, in actual use, the drive disk is driven by only a single drive motor. When the drive motor fails, the voltage regulation function of the tap changer cannot be normally realized, which is inconvenient and has poor reliability. Summary of the invention

[0005] The tap switch inside the existing voltage regulator is only driven and controlled by a single drive motor. When the drive motor fails, the tap switch cannot function normally, which is inconvenient. To solve this problem, the following invention is proposed: A tap changer for a voltage regulator comprises a base, the base comprising a bottom plate and side plates arranged on both sides of the bottom plate, wherein a fixed arm extending horizontally inward is provided on one side plate, a driving hole is penetrated through the fixed arm, an auxiliary driving shaft is inserted into the driving hole, a gear plate is rotatably mounted above the bottom plate, a chain is meshed with the outer side of the gear plate, the chain is stretched toward one side to be partially spaced from the gear plate, a driving part is provided on the inner side of the stretched part of the chain, an end of the auxiliary driving shaft is drivingly connected to the driving part, a driving plate is fixedly provided above the gear plate, a main driving shaft and a transmission head are fixedly provided on the driving plate, the main driving shaft and the auxiliary driving shaft are both connected to a driving motor, and the transmission head is drivingly connected to the tap.

[0006] After the driving motor is started, it drives the main driving shaft or the auxiliary driving shaft to rotate. After the main driving shaft rotates, it directly drives the transmission head to rotate through the driving disk. The rotated transmission head can drive the tap to move, thereby realizing the voltage regulating function of the voltage regulator; after the auxiliary driving shaft rotates, it drives the gear disk to rotate through the chain. After the gear disk rotates, it drives the driving disk and the transmission to rotate, which can also realize the movement of the tap.

[0007] Furthermore, two fixed arms extending horizontally inward are respectively provided on the side plates on both sides of the base plate, and a driving hole is penetrated through each fixed arm. An auxiliary driving shaft transmission-connected to the driving part is inserted into at least one driving hole. By connecting the driving part with the auxiliary driving shafts at different positions, the initial rotation angle of the gear plate can be changed. At the same time, according to the installation position of the base, the corresponding auxiliary driving shaft is selected to connect to the driving motor.

[0008] Furthermore, a plurality of vertically protruding limit columns are provided on the base plate, and a horizontal limit arm is provided in the interval between the gear plate and the chain. The limit arm is located between two limit columns to limit the rotation range of the gear plate and prevent the transmission head from rotating too much, which would cause the tap to fail to complete the switching normally.

[0009] Furthermore, a matching block is provided at the bottom of the driving disk, and a penetrating matching hole is provided on the gear disk. The matching block is inserted into the matching hole to fix the driving disk and the gear disk together.

[0010] Furthermore, a position disk and a spacer plate are provided between the gear disk and the bottom plate. The position disk is fixedly connected to the gear disk, and the spacer plate is fixedly connected to the bottom plate and rotatably connected to the position disk.

[0011] Furthermore, a plurality of first gaskets are provided between the main driving shaft and the driving disk, and a plurality of second gaskets are provided between the positioning disk and the gear disk, so as to improve the overall external force impact resistance capability of the present invention.

[0012] The present invention proposes a tap changer for a voltage regulator, which has the beneficial effect that two drive motors are connected at the same time, and the two drive motors can drive the drive disk to rotate, and the movement of the tap is realized by rotating the transmission head, thereby realizing the voltage regulating function of the voltage regulator, so that when a certain drive motor is damaged, it will not affect the normal operation of the tap changer, and the reliability is good; in addition, the present invention also reserves a plurality of auxiliary drive shafts that can be connected to the drive motors, and the operator can select a suitable position to install the drive motor according to actual needs, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the exploded structure of the tap changer in the present invention.

[0014] The corresponding relationship between the illustrations and component names in the figure is as follows: 1. Base; 2. Gear plate; 3. Drive plate; 4. First gasket; 5. Second gasket; 6. Spacer plate; 7. Position disk; 11. Bottom plate; 12. Side plate; 13. Limiting column; 14. Fixed arm; 15. Drive hole; 16. Fixed hole; 21. Chain; 22. Limiting arm; 23. Drive unit; 24. Matching hole; 31. Main drive shaft; 32. Transmission head; 33. Matching block. DETAILED DESCRIPTION

[0015] The technical solution of the present invention will be described clearly and completely below in conjunction with the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0016] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so as to describe the embodiments of the present application described herein.

[0017] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, product, or apparatus.

[0018] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0019] like Figure 1 As shown, it is a preferred embodiment of the present invention, a tap changer for a voltage regulator, comprising a base 1, the base 1 comprising a bottom plate 11 and side plates 12 vertically extending from both sides of the bottom plate 11, the side plates 12 are provided with a V-shaped notch, one end of the V-shaped notch of one of the side plates 12 is provided with a fixed arm 14 extending horizontally toward the inner side of the side plate 12, wherein the fixed arm 14 is provided with a penetrating drive hole 15, and an auxiliary drive shaft ( Figure 1, the component is not included in the figure), a gear plate 2 is rotatably mounted above the base plate 11, a plurality of meshing teeth are arranged at the periphery of the gear plate 2, the meshing teeth are meshed with a chain 21 sleeved on the outside of the gear plate 2, one side of the chain 21 is stretched toward the fixed arm 14 in a pointed shape, so that the chain 21 is partially separated from the meshing teeth on the gear plate 2, the pointed inner side of the chain 21 is the driving part 23, the end of the auxiliary driving shaft is meshed with the driving part 23, so as to drive the auxiliary driving shaft and the chain 21, a driving plate 3 is fixedly provided above the gear plate 2, a main driving shaft 31 and a transmission head 32 are arranged on the top disk surface of the driving plate 3, the main driving shaft 31 is located at the center of the driving plate 3, and the transmission head 32 is connected to the tap in a driving manner.

[0020] The auxiliary drive shaft and the main drive shaft 31 are both connected to the output end of the drive motor. After the drive motor is started, the main drive shaft 31 or the auxiliary drive shaft is driven to rotate. After the main drive shaft 31 rotates, it directly drives the drive disk 3 and the transmission head 32 to rotate. After the transmission head 32 rotates, it drives the tap connected thereto to rotate, so as to achieve the purpose of voltage regulation of the voltage regulator. When the drive motor connected to the main drive shaft 31 is damaged or not installed, the auxiliary drive shaft can be rotated. After the auxiliary drive shaft rotates, the transmission chain 21 rotates. The chain 21 rotates and drives the gear disk 2 to rotate. The drive disk 3 will rotate with the rotation of the gear disk 2, and finally the rotation of the tap can also be achieved.

[0021] Furthermore, in this embodiment, a fixed arm 14 extending horizontally inward is provided on both sides of the V-shaped notch on the side plates 12 on both sides of the bottom plate 11, and a total of four fixed arms 14 are provided. A driving hole 15 is penetrated through each fixed arm 14, and an auxiliary driving shaft is inserted into at least one driving hole 15. Each auxiliary driving shaft can be connected to the output end of the driving motor, but only one auxiliary driving shaft is engaged with the driving part 23 of the chain 21.

[0022] When there are multiple auxiliary drive shafts, the operator can change the position of the auxiliary drive shaft engaged by the drive part 23 on the chain 21, so as to achieve the purpose of changing the control of the auxiliary drive shaft motor. On the one hand, the operator can adjust the auxiliary drive shaft in a suitable position according to actual needs to connect the drive motor. On the other hand, it is also convenient for the operator to adjust the starting rotation angle of the gear plate 2, which is more convenient.

[0023] On the basis of the above, the bottom plate 11 is provided with four vertically protruding limit posts 13, and the gear plate 2 is provided with a limit arm 22 extending horizontally and located in the interval between the gear plate 2 and the chain 21. After the gear plate 2 is rotatably mounted on the bottom plate 11, the limit arm 22 is located between two limit posts 13. The rotation process of the gear plate 2 will be limited by the limit posts 13, so that it can only rotate within a specific angle to ensure that the transmission head 32 does not rotate excessively. After changing the auxiliary drive shaft engaged by the chain 21, in order to prevent the limit arm 22 and the chain 21 from blocking each other, the gear plate 2 also needs to be rotated accordingly.

[0024] Specifically, a matching block 33 is provided at the bottom of the driving disk 3, and a through matching hole 24 is provided on the gear disk 2. After the matching block 33 is inserted into the matching hole 24, the driving disk 3 and the gear disk 2 are fixedly connected to each other, so as to realize the common rotation of the gear disk 2 and the driving disk 3; further, a position disk 7 and a spacer plate 6 are also provided between the gear disk 2 and the base plate 11, the position disk 7 is fixedly connected to the gear disk 2, and a plurality of fixing holes 16 are provided on the spacer plate 6 and the base plate 11, and the fixing holes 16 are connected with fasteners to fix the two together, and the position disk 7 and the spacer plate 6 are rotatably connected; further, a plurality of first gaskets 4 are provided between the main driving shaft 31 and the driving disk 3, and a plurality of second gaskets 5 are provided between the position disk 7 and the gear disk 2, and the first gaskets 4 and the second gaskets 5 can reduce external force impact.

[0025] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A tap changer for a voltage regulator, comprising a base (1), characterized in that: The base (1) comprises a bottom plate (11) and side plates (12) arranged on both sides of the bottom plate (11), wherein a fixed arm (14) extending horizontally inward is provided on one side plate (12), a driving hole (15) is penetrated through the fixed arm (14), an auxiliary driving shaft is inserted into the driving hole (15), a gear plate (2) is rotatably mounted above the bottom plate (11), a chain (21) is meshed on the outer side of the gear plate (2), the chain (21) is stretched toward one side so as to be partially separated from the gear plate (2), a driving part (23) is provided on the inner side of the stretched part of the chain (21), an end of the auxiliary driving shaft is drivingly connected to the driving part (23), a driving plate (3) is fixedly provided above the gear plate (2), a main driving shaft (31) and a driving head (32) are provided on the driving plate (3), and both the main driving shaft (31) and the auxiliary driving shaft are connected to a driving motor.

2. The tap changer according to claim 1, characterized in that: Two fixing arms (14) extending horizontally inward are respectively provided on the side plates (12) on both sides of the bottom plate (11), and each fixing arm (14) is penetrated by a driving hole (15), wherein an auxiliary driving shaft drivingly connected to the driving part (23) is inserted into one of the driving holes (15).

3. The tap changer according to claim 2, characterized in that: A plurality of vertically protruding limiting columns (13) are provided on the bottom plate (11), and a horizontal limiting arm (22) is provided in the interval between the gear plate (2) and the chain (21). The limiting arm (22) is located between two limiting columns (13) to limit the rotation range of the gear plate (2).

4. The tap changer according to claim 3, characterized in that: The bottom of the driving disk (3) is provided with a matching block (33), and the gear disk (2) is provided with a matching hole (24) extending therethrough. The matching block (33) is inserted into the matching hole (24) to fixedly connect the driving disk (3) and the gear disk (2).

5. The tap changer according to claim 4, characterized in that: A position disk (7) and a spacer plate (6) are also provided between the gear disk (2) and the bottom plate (11); the position disk (7) is fixedly connected to the gear disk (2); the spacer plate (6) is fixedly connected to the bottom plate (11) and is rotatably connected to the position disk (7).

6. The tap changer according to claim 5, characterized in that: A plurality of first gaskets (4) are provided between the main drive shaft (31) and the drive disk (3), and a plurality of second gaskets (5) are provided between the position disk (7) and the gear disk (2).

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