Three-section type conversion machine for three-power-supply change-over switch

Abstract

The utility model discloses a three-section type conversion machine for a three-power-supply change-over switch. The three-section type conversion machine comprises a fixed base, a protective shell, a driving motor, an adjusting rotating rod, a fixed connecting plate, a limiting fixed bottom plate, a movable shifting piece, an adjusting shifting piece and a handle driving assembly. The handle driving assembly comprises a driving gear, a driving gear, a rotating shaft and a handle, the driving gear is fixedly connected with the adjusting rotating rod, the driving gear is meshed with the driving gear, the handle is connected with the driving gear, and the gear ratio is 1.5: 1-3: 1. According to the converter, through the design of the handle driving assembly, the limitation of the traditional handle driving rotation angle is broken through, adjustment of more than 180 degrees can be achieved, the converter adapts to the complex working condition of a three-power-supply mode, the driving structure is optimized, force transmission and reasonable rotation speed adjustment are guaranteed, and the driving efficiency and the adjusting precision are improved.

Description

Technical Field

[0001] This utility model relates to the field of power conversion technology, specifically a three-stage converter for a three-power conversion switch. Background Technology

[0002] In power systems, three-power transfer switches play a crucial role in ensuring the reliability and stability of power supply. The performance of its core component, the transfer unit, directly affects the overall system operation.

[0003] Currently, the gear shifting methods for two-stage changeover switches mainly include motor drive and handle drive. Handle drive typically involves directly connecting the handle to the adjustment lever, as illustrated in our previous application (CN2024210353070), which discloses a three-stage changeover switch for dual power supplies. However, this structure has significant limitations. Due to the enclosure, the adjustable angle is limited; the handle's rotation angle is the same as the adjustment lever's, often less than 150 degrees, resulting in a narrow adjustment range.

[0004] In three-power mode, actual operating conditions place higher demands on the rotation adjustment angle of the converter, often requiring an adjustment angle of 180 degrees or even greater. Existing handle drive structures cannot meet this requirement, greatly limiting the application of three-power transfer switches in complex operating conditions. Therefore, developing a drive structure capable of achieving a larger adjustment angle and adapting to different operating conditions has become an urgent problem to be solved. Utility Model Content

[0005] In view of the shortcomings in the prior art, this utility model provides a three-stage converter for a three-power transfer switch.

[0006] The technical solution adopted by this utility model is: a three-stage converter for a three-power conversion switch, including a fixed base, a protective shell connected to the end face of the fixed base, a drive motor fixed on the front fixed bracket of the fixed base, an adjusting rod connected to the drive end of the drive motor through a coupling, a fixed connecting plate fixed on the fixed base, a limiting fixed base plate fixed on the fixed connecting plate, a movable paddle connected in the inner cavity of the limiting fixed base plate, an adjusting paddle connected on the movable paddle, and a connecting hole of the adjusting paddle connected to the adjusting rod; it also includes a handle drive assembly for driving the adjusting rod to rotate, the handle drive assembly including a drive gear, a drive gear, a rotating shaft and a handle;

[0007] The drive gear is fixedly connected to the adjusting rod, the rotating shaft is disposed between the front fixed bracket and the fixed connecting plate above the drive gear, the driving gear meshes with the drive gear for transmission, and the handle is connected to the driving gear;

[0008] The gear ratio between the driving gear and the drive gear is 1.5:1 to 3:1.

[0009] A further provision in this application is that the ratio of the number of teeth of the driving gear to the number of teeth of the drive gear is 2:1.

[0010] A further configuration of this application is that the drive gear is provided with a U-shaped slot, one end of the handle is provided with a connector that is inserted into the U-shaped slot, and the other end of the handle is covered with a rubber sleeve.

[0011] A further provision of this application is that the rotating shaft is threadedly connected to a fixed connecting plate, a limiting fixed base plate, or a front fixed bracket, and a screw head is provided at the end of the rotating shaft, with a cross groove provided at the end of the screw head.

[0012] A further provision of this application is that a motor housing is fixed on the fixed base, the motor housing is provided with a slot for the drive gear to extend out, and protective steps adapted to the drive gear are provided on both sides of the slot.

[0013] A further provision of this application is that the two ends of the slot are provided with limiting inclined surfaces, and the angle between the limiting inclined surfaces is 130-140°.

[0014] The beneficial effects of this utility model are:

[0015] 1. Enhanced Adjustment Angle: Utilizing the meshing transmission between the drive gear and the operating gear to power the adjusting lever, this design eliminates the rotation angle limitations of traditional handle-driven methods, easily achieving adjustments of over 180 degrees. This provides strong support for handling complex operating conditions under three power supply modes. Compared to the less than 150-degree adjustment angle of traditional two-stage converter handle-driven systems, this patent significantly expands the adjustment range, ensuring flexible and precise power conversion operations under various operating conditions, improving adaptability and enhancing versatility.

[0016] 2. Optimized drive structure: The handle drive assembly adopts a combination design of drive gear, driving gear, rotating shaft, and handle, resulting in a compact and reasonable structure. This design not only solves the problem of insufficient adjustment angle but also achieves effective force transmission and reasonable speed adjustment through a reasonable gear ratio (the gear ratio between the driving gear and the drive gear is 1.5:1 to 3:1). While ensuring adjustment accuracy, it reduces the difficulty of operation, improves drive efficiency, and extends the service life of the equipment.

[0017] 3. By using the meshing transmission between the drive gear and the operating gear to drive the adjusting rod, the driving angle of the handle can be amplified. Thus, with the same handle stroke, the adjusting rod can be controlled to achieve a larger rotation angle. Simply replace the drive gear and operating gear with different gear ratios according to the usage requirements.

[0018] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The utility model will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0021] Figure 3 This is an internal schematic diagram from another perspective of the present invention.

[0022] Figure 4 This is an exploded view of the handle drive assembly.

[0023] Figure 1-4 In the middle: 1. Fixed base; 2. Protective shell; 3. Front fixed bracket; 4. Drive motor; 5. Adjusting rod; 6. Fixed connecting plate; 7. Limiting fixed base plate; 8. Moving paddle; 9. Adjusting paddle; 10. Drive gear; 11. Active gear; 12. Rotating shaft; 13. Handle; 14. "U" shaped slot; 15. Connector; 16. Rubber sleeve; 17. Screw head; 18. Cross groove; 19. Motor housing; 20. Slot; 21. Protective step; 22. Limiting slope. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0026] This invention provides a three-stage converter for a three-power transfer switch.

[0027] In this embodiment, refer to Figure 1-4 The three-stage converter for a three-power transfer switch includes a fixed base 1, a protective shell 2 connected to the end face of the fixed base 1, a drive motor 4 fixed on the front fixed bracket 3 of the fixed base 1, an adjusting rod 5 connected to the drive end of the drive motor 4 via a coupling, a fixed connecting plate 6 fixed on the fixed base 1, a limiting fixed base plate 7 fixed on the fixed connecting plate 6, a movable paddle 8 connected to the inner cavity of the limiting fixed base plate 7, an adjusting paddle 9 connected to the movable paddle 8, and a connecting hole of the adjusting paddle 9 connected to the adjusting rod. It also includes a handle drive assembly for driving the adjusting rod to rotate, the handle drive assembly including a drive gear 10, a drive gear 11, a rotating shaft 12, and a handle 13.

[0028] The drive gear is fixedly connected to the adjusting rod, the rotating shaft is disposed between the front fixed bracket and the fixed connecting plate above the drive gear, the driving gear meshes with the drive gear for transmission, and the handle is connected to the driving gear;

[0029] The gear ratio between the driving gear and the drive gear is 1.5:1 to 3:1.

[0030] In the above technical solution, the drive gear is fixedly connected to the adjusting rod, the driving gear meshes with the drive gear, and the handle is connected to the driving gear. Thus, when the handle is turned, the driving gear drives the drive gear, which in turn drives the adjusting rod. The specific gear ratio (1.5:1 to 3:1) between the driving and driving gears ensures the rationality of force transmission and speed adjustment. It achieves both motor-driven and handle-driven operation, increasing operational flexibility. The design of the handle-driven component allows the adjustment angle to exceed the limitations of existing designs, reaching 180 degrees or even more (achieved by adjusting the gear ratio), adapting to complex operating conditions under three power supply modes. The reasonable gear ratio ensures effective force transmission and reasonable speed adjustment, improving drive efficiency and adjustment accuracy.

[0031] Specifically, the ratio of the number of teeth of the driving gear to the number of teeth of the drive gear is 2:1.

[0032] Specifically, the drive gear is provided with a U-shaped slot 14, one end of the handle is provided with a connector 15 that is inserted into the U-shaped slot 14, and the other end of the handle is covered with a rubber sleeve 16.

[0033] In this embodiment, a U-shaped slot is provided on the drive gear, and a connector is provided at one end of the handle to mate with it. This plug-in connection method enables a detachable connection between the handle and the drive gear. A rubber sleeve is fitted on the other end of the handle to increase grip comfort and friction.

[0034] The detachable connection makes it easy to install and remove the handle, and allows for quick operation when the handle is damaged or needs to be replaced.

[0035] Specifically, the rotating shaft is threadedly connected to the fixed connecting plate, the limiting fixed base plate, or the front fixed bracket, and the end of the rotating shaft is provided with a screw head 17, and the end of the screw head is provided with a cross groove 18.

[0036] In this embodiment, the rotating shaft is threadedly connected to the fixed connecting plate, the limiting fixed base plate, or the front fixed bracket. A screw head with a cross groove is provided at the end of the rotating shaft for easy operation with tools such as screwdrivers.

[0037] The shaft is threaded at the connection point with the fixed connecting plate, the limiting fixing base plate, or the front fixed bracket, and is threaded into the threaded holes of the fixed connecting plate, the limiting fixing base plate, or the front fixed bracket. The other parts of the shaft have a smooth cylindrical structure, especially the connection point with the drive gear, which has a smooth structure, allowing for better rotational engagement with the drive gear.

[0038] Specifically, a motor housing 19 is also fixed on the fixed base. The motor housing 19 is provided with a slot 20 for the extension of the drive gear. Protective steps 21 adapted to the drive gear are provided on both sides of the slot 20.

[0039] In this embodiment, a motor housing is fixed to a base, and a slot is provided on the motor housing to allow the drive gear to extend. Protective steps are provided on both sides of the slot. The motor housing provides further protection for the drive motor and internal transmission components, while the protective steps protect and limit the movement of the drive gear.

[0040] Specifically, the two ends of the slot are provided with limiting inclined surfaces 22, and the angle between the limiting inclined surfaces 22 and the limiting inclined surfaces is 130-140°.

[0041] In this embodiment, limiting inclined surfaces are provided at both ends of the slot, and the included angle of the limiting inclined surfaces is between 130° and 140°. A suitable included angle of the limiting inclined surfaces ensures that the drive gear rotates within a specified angle range, avoiding equipment damage or abnormal power conversion due to excessive rotation. In practical use, this angle range satisfies the adjustment angle required for three-power conversion while ensuring the safe operation of the equipment, thus improving the accuracy and stability of equipment operation.

[0042] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A three-stage converter for a three-power transfer switch, comprising a fixed base, a protective shell connected to the end face of the fixed base, a drive motor fixed on the front fixed bracket of the fixed base, an adjusting rod connected to the drive end of the drive motor via a coupling, a fixed connecting plate fixed on the fixed base, a limiting fixed base plate fixed on the fixed connecting plate, a movable lever connected to the inner cavity of the limiting fixed base plate, an adjusting lever connected to the movable lever, and a connecting hole of the adjusting lever connected to the adjusting rod, characterized in that: It also includes a handle drive assembly for driving the adjustment lever to rotate, the handle drive assembly including a drive gear, a drive gear, a rotating shaft and a handle; The drive gear is fixedly connected to the adjusting rod, the rotating shaft is disposed between the front fixed bracket and the fixed connecting plate above the drive gear, the driving gear meshes with the drive gear for transmission, and the handle is connected to the driving gear; The gear ratio between the driving gear and the drive gear is 1.5:1 to 3:

1.

2. The three-stage converter for a three-power transfer switch according to claim 1, characterized in that: The ratio of the number of teeth of the driving gear to the number of teeth of the drive gear is 2:

1.

3. The three-stage converter for a three-power transfer switch according to claim 1, characterized in that: The drive gear is provided with a "U"-shaped slot, one end of the handle is provided with a connector that is inserted into the "U"-shaped slot, and the other end of the handle is covered with a rubber sleeve.

4. The three-stage converter for a three-power transfer switch according to claim 1, characterized in that: The rotating shaft is threadedly connected to a fixed connecting plate, a limiting fixed base plate, or a front fixed bracket, and a screw head is provided at the end of the rotating shaft, with a cross groove provided at the end of the screw head.

5. The three-stage converter for a three-power transfer switch according to claim 1, characterized in that: The fixed base also has a motor housing fixed on it. The motor housing has a slot for the drive gear to extend out, and protective steps adapted to the drive gear are provided on both sides of the slot.

6. The three-stage converter for a three-power transfer switch according to claim 5, characterized in that: The groove is provided with limiting inclined surfaces at both ends, and the angle between the limiting inclined surfaces is 130-140°.

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