Straight-tooth electric operating mechanism of circuit breaker

Abstract

The utility model relates to the technical field of electric operating mechanisms, in particular to a straight-tooth electric operating mechanism of a circuit breaker, which comprises an upper fixing plate and a lower fixing plate, a gear set is arranged between the upper fixing plate and the lower fixing plate and comprises a first-stage large gear, a motor is arranged at the bottom of the lower fixing plate, and a second-stage large gear is arranged at the bottom of the lower fixing plate. The output end of the motor is fixedly connected with a driving shaft, the outer surface of the driving shaft is fixedly connected with a power gear, and the power gear is meshed with the first-stage large gear. The manual operation shaft is manually controlled to drive the regulation and control gear to rotate, manual driving is achieved, the electric driving mode and the manual driving mode are achieved, use requirements in different environments can be met, and the situation that a circuit breaker cannot be normally driven to be switched off or switched on due to the fact that a motor is abnormal is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of electric operating mechanisms, in particular to a circuit breaker straight-tooth electric operating mechanism. Background Art

[0002] The electric operating mechanism is an actuator used to control the start, stop and other operations of electrical equipment. In a circuit breaker with remote control opening and closing functions, an electric operating mechanism must be set for control.

[0003] In the prior art, the electric operating mechanism proposed in patent application number "CN202121888897.8" includes a motor and a gear set driven by the motor, a metal bracket is installed on the motor, the gear set includes at least one gear, and the metal bracket includes a first support plate and a second support plate arranged at intervals, and at least one gear shaft is provided between the first support plate and the second support plate.

[0004] However, in the above patent application, the control of the electric operating mechanism can only be driven by a motor. When the motor is damaged and cannot be driven, it cannot be manually controlled from the near end, which cannot meet the use requirements in complex environments. Utility Model Content

[0005] The utility model aims to provide a circuit breaker spur gear electric operating mechanism to solve the problems raised in the above background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A circuit breaker spur gear electric operating mechanism comprises an upper fixed plate and a lower fixed plate, a gear set is arranged between the upper fixed plate and the lower fixed plate, the gear set comprises a primary large gear, a motor is arranged at the bottom of the lower fixed plate, a driving shaft is fixedly connected to the output end of the motor, a power gear is fixedly connected to the outer surface of the driving shaft, and the power gear is meshed with the primary large gear.

[0008] The lower fixed plate is rotatably connected with a manual operating shaft, the top of the manual operating shaft passes through the upper fixed plate and extends to the outside of the upper fixed plate, the top of the manual operating shaft is fixedly connected with a control knob, and the outer surface of the manual operating shaft is fixedly connected with a regulating gear, which is meshed with the first-stage large gear.

[0009] Preferably, the gear set also includes a secondary large gear and a secondary small gear fixed on the same axial rod, an executive gear and a tertiary small gear fixed on the same axial rod, a primary small gear is arranged at the bottom of the primary large gear, the primary large gear and the primary small gear are fixed on the same axial rod, and the two ends of the axial rod are rotatably connected to the upper fixed plate and the lower fixed plate respectively.

[0010] Preferably, both the upper fixed plate and the lower fixed plate are provided with adjusting slots, and the drive shaft and the adjusting slots are slidably connected.

[0011] Preferably, a fixing rod is provided between the upper fixing plate and the lower fixing plate, two ends of the fixing rod respectively penetrate the upper fixing plate and the lower fixing plate, and both ends of the fixing rod are threadedly connected with fixing nuts.

[0012] Preferably, a fixing sleeve is fixedly connected to the bottom of the lower fixing plate, a control screw is threadedly connected to the fixing sleeve, one end of the control screw is rotatably connected to a motor fixing seat, and the motor is fixedly mounted on the motor fixing seat.

[0013] Preferably, both sides of the motor fixing seat are fixedly connected to the limiting sleeves, the bottom of the lower fixing plate is fixedly connected to the limiting shaft, and the limiting shaft and the limiting sleeve are slidably connected.

[0014] Beneficial effects of the utility model:

[0015] The electric operating mechanism provided by the utility model is used for the opening and closing of the circuit breaker. It can be driven by a motor, or when the motor is damaged and cannot be driven normally, the manual operating shaft is manually controlled to drive the regulating gear to rotate to achieve manual driving. It has two modes of electric driving and manual driving, and can adapt to the use requirements in different environments to prevent the motor from being abnormal and unable to drive the circuit breaker normally to open or close. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This utility model Figure 1 A schematic diagram of the structure of the bottom of the middle and lower fixed plate;

[0019] Figure 3 This utility model Figure 1 The structural diagram of the gear set;

[0020] Figure 4 This utility model Figure 3 Schematic diagram of the structure at the bottom of the middle gear set.

[0021] The reference numerals in the figures are as follows:

[0022] 1. Upper fixed plate, 2. Lower fixed plate, 3. First-stage large gear, 4. Motor, 5. Drive shaft, 6. Power gear, 7. Manual operation shaft, 8. Control knob, 9. Adjustment gear, 10. Second-stage large gear, 11. Second-stage small gear, 12. Execution gear, 13. Third-stage small gear, 14. First-stage small gear, 15. Adjustment slide, 17. Fixed rod, 18. Fixed nut, 19. Fixed sleeve, 20. Control screw, 21. Motor fixing seat, 22. Limit sleeve, 23. Limit shaft. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] A circuit breaker spur gear electric operating mechanism comprises an upper fixed plate 1 and a lower fixed plate 2, a gear set is arranged between the upper fixed plate 1 and the lower fixed plate 2, the gear set comprises a primary large gear 3, a motor 4 is arranged at the bottom of the lower fixed plate 2, a drive shaft 5 is fixedly connected to the output end of the motor 4, a power gear 6 is fixedly connected to the outer surface of the drive shaft 5, and the power gear 6 is meshed with the primary large gear 3.

[0025] The lower fixed plate 2 is rotatably connected with a manual operating shaft 7, the top of the manual operating shaft 7 passes through the upper fixed plate 1 and extends to the outside of the upper fixed plate 1, the top of the manual operating shaft 7 is fixedly connected with a control knob 8, and the outer surface of the manual operating shaft 7 is fixedly connected with a regulating gear 9, which is meshed with the first-stage large gear 3.

[0026] like Figure 1 and Figure 2 The electric slot mechanism is located inside the circuit breaker and can control the opening and closing of the circuit breaker. The outer shell of the circuit breaker is a detachable shell. By removing the outer shell of the circuit breaker, the manual operating shaft 7 and the control screw 20 inside the circuit breaker can be operated. The motor 4 draws power from the inside of the circuit breaker through an excess length of line. The excess length of the line can maintain the connection between the motor 4 and the external mechanism when the motor 4 is active.

[0027] The gear set also includes a secondary large gear 10 and a secondary small gear 11 fixed on the same shaft, an execution gear 12 and a tertiary small gear 13 fixed on the same shaft, a primary small gear 14 is arranged at the bottom of the primary large gear 3, the primary large gear 3 and the primary small gear 14 are fixed on the same shaft, and the two ends of the shaft are rotatably connected to the upper fixed plate 1 and the lower fixed plate 2 respectively.

[0028] like Figure 1 , Figure 3 and Figure 4 The first-stage large gear 3, the first-stage small gear 14, the second-stage large gear 10, the second-stage small gear 11, the execution gear 12 and the third-stage small gear 13 are all spur gears, which are easy to process and manufacture, and convenient to repair and replace;

[0029] The power gear 6 and the regulating gear 9 are both meshed with the primary large gear 3 , the primary small gear 14 is meshed with the secondary large gear 10 , and the secondary small gear 11 is meshed with the execution gear 12 .

[0030] The upper fixing plate 1 and the lower fixing plate 2 are both provided with an adjusting slide groove 15 , and the driving shaft 5 is slidably connected to the adjusting slide groove 15 .

[0031] like Figure 1 , Figure 2 and Figure 3 The driving shaft 5 passes through the adjusting slot 15 and can move along the direction of the adjusting slot 15 .

[0032] A fixing rod 17 is disposed between the upper fixing plate 1 and the lower fixing plate 2 , and two ends of the fixing rod 17 respectively penetrate the upper fixing plate 1 and the lower fixing plate 2 , and both ends of the fixing rod 17 are threadedly connected with fixing nuts 18 .

[0033] like Figure 1 and Figure 2 Both ends of the fixing rod 17 are threaded to achieve threaded connection with the fixing nut 18. The fixing nuts 18 at both ends are located on the side where the upper fixing plate 1 and the lower fixing plate 2 are away from each other, so that the upper fixing plate 1 and the lower fixing plate 2 can be installed together.

[0034] The bottom of the lower fixed plate 2 is fixedly connected with a fixing sleeve 19 , the fixing sleeve 19 is threadedly connected with a control screw 20 , one end of the control screw 20 is rotatably connected with a motor fixing seat 21 , and the motor 4 is fixedly mounted on the motor fixing seat 21 .

[0035] like Figure 2 The motor 4 is mounted on the motor fixing seat 21 and can move together with the motor fixing seat 21 . The screw mouth on the fixing sleeve 19 is used to realize and control the threaded connection of the screw rod 20 .

[0036] Both sides of the motor fixing seat 21 are fixedly connected with the limiting sleeves 22 , the bottom of the lower fixing plate 2 is fixedly connected with the limiting shaft 23 , and the limiting shaft 23 and the limiting sleeves 22 are slidably connected.

[0037] like Figure 2 By utilizing the sliding connection between the limiting shaft 23 and the limiting sleeve 22 , the movement of the motor fixing seat 21 can be limited to ensure the horizontal movement of the motor fixing seat 21 .

[0038] The working principle of a circuit breaker straight-tooth electric operating mechanism provided by the utility model is as follows:

[0039] When the motor 4 is started, it can drive the shaft 5 and the power gear 6 to rotate. The power gear 6 drives the first-stage large gear 3 to rotate. The first-stage large gear 3 drives the second-stage large gear 10 to rotate through the first-stage small gear 14. The second-stage large gear 10 drives the execution gear 12 to rotate through the second-stage small gear 11. The execution gear 12 is used to drive the activities of the corresponding opening and closing mechanisms inside the circuit breaker.

[0040] When the control screw 20 is manually rotated to drive the motor fixing seat 21 and the motor 4 to move in the direction away from the fixing sleeve 19, the motor 4 drives the power gear 6 and the first-stage large gear 3 to separate through the driving shaft 5. At this time, the control knob 8 can be manually rotated. The control knob 8 drives the regulating gear 9 to rotate through the manual operating shaft 7. The regulating gear 9 drives the first-stage large gear 3 to rotate. The rotation of the first-stage large gear 3 finally drives the execution gear 12 to rotate.

[0041] Compared with the related art, the circuit breaker straight tooth electric operating mechanism provided by the utility model has the following advantages:

[0042] Beneficial effects:

[0043] The electric operating mechanism provided by the utility model is used for the opening and closing of the circuit breaker. It can be driven by the motor 4, or when the motor 4 is damaged and cannot be driven normally, the manual operating shaft 7 is manually controlled to drive the regulating gear 9 to rotate to realize manual driving. It has two modes of electric driving and manual driving, which can adapt to the use requirements in different environments and prevent the motor 4 from being abnormal and unable to drive the circuit breaker normally to open or close.

[0044] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A circuit breaker spur gear electric operating mechanism, comprising an upper fixing plate (1) and a lower fixing plate (2), characterized in that: A gear set is arranged between the upper fixed plate (1) and the lower fixed plate (2), the gear set comprising a first-stage large gear (3), a motor (4) is arranged at the bottom of the lower fixed plate (2), a drive shaft (5) is fixedly connected to the output end of the motor (4), a power gear (6) is fixedly connected to the outer surface of the drive shaft (5), and the power gear (6) is meshed with the first-stage large gear (3); The lower fixed plate (2) is rotatably connected to a manual operating shaft (7), the top of the manual operating shaft (7) passes through the upper fixed plate (1) and extends to the outside of the upper fixed plate (1), the top of the manual operating shaft (7) is fixedly connected to a control knob (8), the outer surface of the manual operating shaft (7) is fixedly connected to a regulating gear (9), and the regulating gear (9) is meshed with the first-stage large gear (3).

2. A circuit breaker spur gear electric operating mechanism according to claim 1, characterized in that: The gear set further comprises a secondary large gear (10) and a secondary small gear (11) fixed on the same shaft rod, an execution gear (12) and a tertiary small gear (13) fixed on the same shaft rod, a primary small gear (14) is arranged at the bottom of the primary large gear (3), the primary large gear (3) and the primary small gear (14) are fixed on the same shaft rod, and the two ends of the shaft rod are respectively rotatably connected to the upper fixing plate (1) and the lower fixing plate (2).

3. A circuit breaker spur gear electric operating mechanism according to claim 1, characterized in that: The upper fixing plate (1) and the lower fixing plate (2) are both provided with an adjusting sliding groove (15), and the driving shaft (5) and the adjusting sliding groove (15) are slidably connected.

4. A circuit breaker spur gear electric operating mechanism according to claim 3, characterized in that: A fixing rod (17) is provided between the upper fixing plate (1) and the lower fixing plate (2), and two ends of the fixing rod (17) respectively penetrate the upper fixing plate (1) and the lower fixing plate (2), and both ends of the fixing rod (17) are threadedly connected with fixing nuts (18).

5. A circuit breaker spur gear electric operating mechanism according to claim 1, characterized in that: The bottom of the lower fixed plate (2) is fixedly connected to a fixing sleeve (19), the fixing sleeve (19) is threadedly connected to a control screw (20), one end of the control screw (20) is rotatably connected to a motor fixing seat (21), and the motor (4) is fixedly mounted on the motor fixing seat (21).

6. A circuit breaker spur gear electric operating mechanism according to claim 5, characterized in that: Both sides of the motor fixing seat (21) are fixedly connected to the limiting sleeves (22), the bottom of the lower fixing plate (2) is fixedly connected to the limiting shaft (23), and the limiting shaft (23) and the limiting sleeve (22) are slidably connected.

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