Anti-swing electric operating mechanism for reclosing circuit breaker

Abstract

The utility model discloses an anti-swing electric operating mechanism for a reclosing circuit breaker, which comprises a motor, the motor is provided with a limiting gasket, the limiting gasket is provided with a first boss, the first boss is internally provided with a second boss, the second boss is provided with a through hole, and the through hole is provided with a through hole. A rotating shaft of the motor is provided with a large gear and abuts against the first boss and the second boss, a plurality of limiting columns at equal intervals are evenly distributed on the large gear with the circle point as the axis and are close to the inner wall of the through hole, and the large gear is provided with a wear-resisting gasket and is arranged on the outer wall of the second boss in a sleeving mode. When the bull gear is influenced by pulling external force during rotation, powerful support is provided for the limiting column through the through hole and the first boss for the wear-resistant gasket, the bull gear is limited to have a large offset distance, a rotating shaft of the motor is prevented from bearing large radial pressure, and therefore the service life of the motor and the service life of the bull gear are effectively prolonged, and the service life of the motor is prolonged. The large gear is prevented from swinging under the influence of external force.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to an anti-sway electric operating mechanism for a reclosing circuit breaker. Background Technology

[0002] Reclosing circuit breakers are widely used in power transmission and distribution circuits to control and protect the circuits. Reclosing circuit breakers have two modes: electric operation and manual operation. Electric operation can replace manual operation, eliminating the need for operators to be on-site, and enabling the reclosing circuit breaker to open and close under remote signal control.

[0003] The existing electric operating mechanism includes a motor, a large gear on the motor shaft, a crank on the large gear, and a push rod on the crank. When the motor is running, the large gear is easily affected by the external force of the push rod, causing the large gear to shift to the side affected by the external force, which in turn causes radial pressure on the motor shaft. Over time, this will reduce the service life of the motor and the large gear. Therefore, the applicant has made a beneficial design and found a way to solve the above problems. The technical solution to be introduced below is produced in this context. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the electric operating mechanism of the traditional reclosing circuit breaker and to provide a product with improved service life and anti-sway function.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] An anti-sway electric operating mechanism for a reclosing circuit breaker includes a motor, a limiting washer, a first boss, a second boss inside the first boss, a through hole in the second boss, a large gear on the motor shaft that abuts against the first and second bosses, a plurality of equally spaced limiting posts evenly distributed around a dot as the axis of the large gear and close to the inner wall of the through hole, a wear-resistant washer fitted onto the outer wall of the second boss, and the outer wall of the wear-resistant washer being close to the inner wall of the first boss.

[0007] Preferably, the wear-resistant pad has multiple mounting holes and a sliding hole corresponding to the second boss.

[0008] Preferably, the end face of the large gear is provided with a baffle, the end face of the baffle is provided with a crank, the crank is provided with a rotatable push rod, and the crank is provided with four fastening screws, which are threaded to the baffle, the large gear, and the mounting hole.

[0009] Preferably, the motor shaft is further provided with a ratchet and is mounted on a baffle.

[0010] Preferably, the baffle is provided with retractable pawls on both sides, and the back of the pawl is provided with a spring that abuts against the baffle, so that the pawl abuts against the one-way teeth of the ratchet.

[0011] Preferably, the wear-resistant pad is made of highly wear-resistant stainless steel.

[0012] Beneficial effects:

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] In this invention, when the large gear is subjected to a pulling force during rotation, the through hole serves as a limiting post and the first boss serves as a wear-resistant pad, providing strong support and limiting the large gear from making excessive offset distances. This prevents the motor shaft from being subjected to excessive radial pressure, thereby effectively improving the service life of the motor and the large gear and preventing the large gear from swaying under the influence of external forces. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the anti-sway electric operating mechanism for a reclosing circuit breaker according to the present invention.

[0016] Figure 2 This is a side cross-sectional view of the anti-sway electric operating mechanism for a reclosing circuit breaker according to the present invention.

[0017] Figure 3 This utility model Figure 2 A partially enlarged view A of an anti-sway electric operating mechanism for a reclosing circuit breaker;

[0018] Figure 4 This is an exploded view of the anti-sway electric operating mechanism for a reclosing circuit breaker according to the present invention. Figure 1 ;

[0019] Figure 5 This is an exploded view of the anti-sway electric operating mechanism for a reclosing circuit breaker according to the present invention. Figure 2 ;

[0020] Figure 6 This is a top view of an anti-sway electric operating mechanism for a reclosing circuit breaker according to the present invention.

[0021] The correspondence between the labels and component names in the attached figures is as follows:

[0022] Reference numerals in the attached diagram: 1. Motor; 2. Limiting washer; 3. Large gear; 4. Wear-resistant washer; 5. Baffle; 6. Crank; 7. Push rod; 8. Fastening screw; 9. Ratchet; 21. First boss; 22. Second boss; 23. Through hole; 31. Limiting post; 41. Mounting hole; 42. Sliding hole; 51. Pawl; 52. Spring. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0026] Reference example Figures 1 to 6 An anti-sway electric operating mechanism for a reclosing circuit breaker includes a motor 1. The motor 1 is provided with a limiting washer 2. The limiting washer 2 has a first boss 21. The first boss 21 has a second boss 22 inside it. The second boss 22 has a through hole 23. The rotating shaft of the motor 1 is provided with a large gear 3, which abuts against the first boss 21 and the second boss 22. The large gear 3 has a plurality of equally spaced limiting posts 31 evenly distributed around a central point as its axis, close to the inner wall of the through hole 23. The large gear 3 is provided with wear-resistant... The gasket 4 is fitted onto the outer wall of the second boss 22. The outer wall of the wear-resistant gasket 4 is close to the inner wall of the first boss 21. When the large gear 3 is subjected to pulling force during rotation, the through hole 23 provides strong support for the limiting post 31 and the first boss 21 for the wear-resistant gasket 4, limiting the large gear 3 from making a large offset distance and preventing the shaft of the motor 1 from being subjected to large radial pressure, thereby effectively improving the service life of the motor 1 and the large gear 3 and preventing the large gear 3 from swinging due to external force.

[0027] It is worth mentioning that the wear-resistant pad 4 is provided with multiple mounting holes 41 and a sliding hole 42 corresponding to the second boss 22. The mounting holes 41 are used in conjunction with the fastening screws 8, and the sliding holes 42 reduce the deviation between the axis of rotation of the large gear 3 and the motor 1.

[0028] It is worth mentioning that the end face of the large gear 3 is provided with a baffle 5, the end face of the baffle 5 is provided with a crank 6, the crank 6 is provided with a rotatable push rod 7, the crank 6 is provided with four fastening screws 8, which are threaded to the baffle 5, the large gear 3, and the mounting hole 41. The crank 6, the baffle 5, the large gear 3, and the wear-resistant pad 4 are tightly abutted against each other by the fastening screws 8, and are connected to the handle of the reclosing circuit breaker by the push rod 7.

[0029] It is worth mentioning that the shaft of motor 1 is also equipped with a ratchet 9, which is set on the baffle 5. The ratchet 9 is used in conjunction with the pawl 51.

[0030] It is worth mentioning that retractable pawls 51 are provided on both sides of the baffle 5, and a spring 52 is provided on the back of the pawl 51, which abuts against the baffle 5, so that the pawl 51 abuts against the one-way teeth of the ratchet 9, as shown in the attached figure. Figure 6 As shown, when the shaft of motor 1 rotates clockwise, the front of the pawl 51 and the one-way teeth of ratchet 9 abut against each other, and ratchet 9 transmits the torque of the shaft to the large gear 3, thereby improving the transmission efficiency of the shaft of motor 1.

[0031] It is worth mentioning that the wear-resistant pad 4 is made of high wear-resistant stainless steel. The advantages of high wear-resistant stainless steel mainly include high hardness, high toughness, good oxidation resistance, strong corrosion resistance and good fatigue resistance, which effectively improves the service life of the wear-resistant pad 4.

[0032] The above design scheme can enable the product to achieve the advantages of increased service life and anti-sway.

[0033] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. An anti-sway electric operating mechanism for a reclosing circuit breaker, comprising a motor (1), characterized in that: The motor (1) is provided with a limiting gasket (2), the limiting gasket (2) is provided with a first boss (21), the first boss (21) is provided with a second boss (22), the second boss (22) is provided with a through hole (23), the rotating shaft of the motor (1) is provided with a large gear (3), and abuts against the first boss (21) and the second boss (22). The large gear (3) is provided with a number of equally spaced limiting posts (31) evenly distributed around the dot as the axis, and close to the inner wall of the through hole (23). The large gear (3) is provided with a wear-resistant gasket (4), and is sleeved on the outer wall of the second boss (22). The outer wall of the wear-resistant gasket (4) is close to the inner wall of the first boss (21).

2. The anti-sway electric operating mechanism for reclosing circuit breakers according to claim 1, characterized in that: The wear-resistant pad (4) is provided with multiple mounting holes (41) and a sliding hole (42) corresponding to the second boss (22).

3. The anti-sway electric operating mechanism for reclosing circuit breakers according to claim 2, characterized in that: The end face of the large gear (3) is provided with a baffle (5), the end face of the baffle (5) is provided with a crank (6), the crank (6) is provided with a rotatable push rod (7), the crank (6) is provided with four fastening screws (8), and is threadedly connected to the baffle (5), the large gear (3), and the mounting hole (41).

4. The anti-sway electric operating mechanism for reclosing circuit breakers according to claim 3, characterized in that: The motor (1) also has a ratchet (9) on its shaft and is mounted on a baffle (5).

5. The anti-sway electric operating mechanism for a reclosing circuit breaker according to claim 4, characterized in that: The baffle (5) has retractable pawls (51) on both sides. The back of the pawl (51) is provided with a spring (52) and abuts against the baffle (5), so that the pawl (51) abuts against the one-way teeth of the ratchet (9).

6. The anti-sway electric operating mechanism for a reclosing circuit breaker according to any one of claims 2 to 5, characterized in that: The wear-resistant pad (4) is made of high wear-resistant stainless steel.

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