A circuit breaker operating structure

Abstract

The present invention relates to a circuit breaker operating structure, which is characterized in that: it includes side plates, an output shaft assembly, a transmission module and a closing release assembly; when the circuit breaker moves from the open state to the closed state, the output shaft drives the outer crank arm to rotate, thereby driving the transmission module through the outer crank arm, and using the transmission module to drive the first rotating shaft to rotate. When the first rotating shaft rotates, the locking tongue will cooperate with the closing push plate. When the reset closing release assembly collides with the locking assembly being latched, the contact force forces the locking tongue to quickly move upward along the tongue screw mating surface, leaving enough space for the closing release assembly to reset. After resetting, the locking tongue moves downward under its own gravity to complete the locking and latching of the closing release assembly, making the circuit breaker unable to perform a second closing.

Description

Technical Field

[0001] The present invention relates to the technical field of breaker operating structures, and particularly to a breaker operating structure. Background Art

[0002] The operating structure of a general breaker needs to meet the "five-prevention" requirements in the power system. For switchgear equipped with a three-position switch, when the three-position switch performs manual isolation or grounding operations, the breaker must always be in the open position and cannot be closed; when the breaker is in the closed position, the three-position switch cannot perform isolation or grounding operations. In addition, it is required that the breaker cannot be closed again when it is in the closed state; in addition, in the existing breaker operating structure, when the torsional spring force value is unreasonably designed and the closing release component fails to reset in time, the closing release component that is being reset will collide with the locking component that is being latched, and blocked by the structure of the locking component, the closing release component cannot be reset to its original holding position.

[0003] For the existing mechanical interlock device of switchgear, such as the Chinese invention patent with the application publication number CN111192775A and the application publication date of May 22, 2020 - Switchgear and Its Locking and Interlocking Device, the interlock design between its three-position mechanism and the breaker mechanism uses multiple components in series and multiple hinge connections, with large cumulative errors and poor reliability; in addition, its interlock function is imperfect and does not have the interlock function of preventing secondary closing after the breaker is closed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a breaker operating structure that can solve the problem that in the existing breaker operating structure, when the torsional spring force value is unreasonably designed and the closing release component fails to reset in time, the closing release component that is being reset will collide with the locking component that is being latched, and blocked by the structure of the locking component, the closing release component cannot be reset to its original holding position.

[0005] To solve the above technical problem, the technical solution of the present invention is: a breaker operating structure, the innovation of which lies in: including side plates, an output shaft assembly, a transmission module, and a closing release component;

[0006] The side plates include a first side plate and a second side plate; the first side plate and the second side plate are parallel to each other and arranged along the vertical direction, and the first side plate and the second side plate are connected by a connecting rod; a number of shaft holes are correspondingly arranged on the first side plate and the second side plate; the shaft holes include an output shaft mounting hole, a first rotary shaft mounting hole, and a second rotary shaft mounting hole; a first rotary shaft is installed at the first rotary shaft mounting hole through a rotary bearing, and a second rotary shaft is installed at the second rotary shaft mounting hole through a rotary bearing;

[0007] The output shaft assembly includes an output shaft and an outer crank arm; the output shaft is a cylindrical structure with splines and is installed at the output shaft mounting hole of the side plate through a slewing bearing; a keyway is provided on the outer crank arm and is nested on the output shaft, and a slewing pin is further provided on the outer crank arm;

[0008] The transmission module is connected to the output shaft and drives the first rotating shaft to rotate through the transmission module;

[0009] The closing and tripping assembly includes a closing lever, a torsion spring, a closing push plate and a locking tongue; the closing lever is arranged on the second rotating shaft through a slewing bearing, and one end of the closing lever is located on the side of the first rotating shaft. The torsion spring is nested on the second rotating shaft, one end of the torsion spring is connected to the closing lever, and the other end of the torsion spring is connected to the circuit breaker. The closing lever is pressed against the side of the first rotating shaft by the torsion force of the torsion spring; the closing push plate is fixedly connected to the closing lever through bolts, and the locking tongue is locked on the side of the first rotating shaft through a tongue screw and the locking tongue can rotate following the first rotating shaft; the locking tongue cooperates with the closing push plate to limit the closing push plate; a waist-shaped hole is provided on the locking tongue, and the tongue screw passes through the waist-shaped hole and is connected to the first rotating shaft.

[0010] Further, the transmission module includes a first transmission plate and a second transmission plate; the bottom end of the first transmission plate is connected to the slewing pin on the outer crank arm, and the bottom end of the first transmission plate can rotate around the slewing pin; the top end of the first transmission plate is connected to one end of the second transmission plate through a pin shaft, and the other end of the second transmission plate is fixedly connected to the end of the first rotating shaft. The rotation of the output shaft drives the first transmission plate to lift in the vertical direction, so as to drive the second transmission plate to drive the first rotating shaft to rotate.

[0011] The advantages of the present invention are as follows:

[0012] 1) In the present invention, by providing a waist-shaped hole structure on the locking tongue, when the reset closing and tripping assembly collides with the locking assembly being latched, the contact force forces the locking tongue to quickly move upward along the mating surface of the tongue screw, leaving enough space for the closing and tripping assembly to reset. After resetting, the locking tongue moves downward under its own gravity to complete the locking and latching of the closing and tripping assembly, making the circuit breaker unable to be closed again. Description of the Drawings

[0013] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0014] Figure 1 It is a three-dimensional schematic diagram of a circuit breaker operating structure of the present invention.

[0015] Figure 2It is the closing locking state diagram of a circuit breaker operating structure of the present invention.

[0016] Figure 3 It is the opening state diagram of a circuit breaker operating structure of the present invention.

[0017] Figure 4 It is the cross-sectional view of the closing tripping component of a circuit breaker operating structure of the present invention.

[0018] Figure 5 It is the locking tongue structure diagram of the closing tripping component of a circuit breaker operating connection of the present invention. Detailed implementation manners

[0019] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] As Figures 1 to 5 shown, a circuit breaker operating structure includes a side plate 1, an output shaft assembly 2, a transmission module 3, and a closing tripping component 4.

[0022] The side plate 1 includes a first side plate 11 and a second side plate 12; the first side plate 11 and the second side plate 12 are parallel to each other and arranged along the vertical direction, and are connected by a connecting rod between the first side plate 11 and the second side plate 12; a plurality of shaft holes are correspondingly arranged on both the first side plate 11 and the second side plate 12; the shaft holes include an output shaft mounting hole, a first rotating shaft mounting hole, and a second rotating shaft mounting hole; a first rotating shaft 13 is installed at the first rotating shaft mounting hole through a rotary bearing, and a second rotating shaft 14 is installed at the second rotating shaft mounting hole through a rotary bearing.

[0023] The output shaft assembly 2 includes an output shaft 21 and an outer crank arm 22; the output shaft 21 is a cylindrical structure with splines and is installed at the output shaft mounting hole of the side plate through a rotary bearing; a key groove is provided on the outer crank arm 22 and is nested on the output shaft 21, and a rotary pin is further provided on the outer crank arm 22.

[0024] The transmission module 3 is connected to the output shaft 21 and drives the first rotating shaft 13 to rotate through the transmission module 3.

[0025] The closing release assembly 4 includes a closing lever 41, a torsion spring 42, a closing push plate 43 and a locking tongue 44; the closing lever 41 is arranged on the second rotating shaft 14 through a slewing bearing, and one end of the closing lever 41 is located on the side of the first rotating shaft 13. The torsion spring 42 is nested on the second rotating shaft 14, and one end of the torsion spring 42 is connected to the closing lever 41, and the other end of the torsion spring 42 is connected to the circuit breaker. The closing lever 41 is pressed against the side of the first rotating shaft 13 by the torsion force of the torsion spring 42; the closing push plate 43 is locked and connected to the closing lever 41 by bolts, and the locking tongue 44 is locked on the side of the first rotating shaft 13 by a tongue screw 45 and the locking tongue 44 can rotate following the first rotating shaft 13; the locking tongue 43 cooperates with the closing push plate 43 to limit the closing push plate 43; a kidney-shaped hole is provided on the locking tongue 44, and the tongue screw 45 passes through the kidney-shaped hole and is connected to the first rotating shaft 13.

[0026] The transmission module 3 includes a first transmission plate 31 and a second transmission plate 32; the bottom end of the first transmission plate 31 is connected to a rotating pin on the outer toggle arm 22, and the bottom end of the first transmission plate 31 can rotate around the rotating pin; the top end of the first transmission plate 31 is connected to one end of the second transmission plate 32 through a pin shaft, and the other end of the second transmission plate 32 is fixedly connected to the end of the first rotating shaft 13. The rotation of the output shaft 21 drives the first transmission plate 31 to move up and down in the vertical direction, so as to drive the second transmission plate 32 to drive the first rotating shaft 13 to rotate.

[0027] The working principle of the present invention is: when the circuit breaker moves from the open state to the closed state, the output shaft drives the outer toggle arm to rotate, thereby driving the transmission module through the outer toggle arm, and using the transmission module to drive the first rotating shaft to rotate. When the first rotating shaft rotates, the locking tongue will cooperate with the closing push plate. When the reset closing release assembly collides with the locking assembly that is being latched, the contact force forces the locking tongue to quickly move upward along the contact surface of the tongue screw, leaving enough space for the closing release assembly to reset. After resetting, the locking tongue moves downward under its own gravity to complete the locking and latching of the closing release assembly, making the circuit breaker unable to be closed again.

[0028] Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A circuit breaker operating structure, characterized in that: It includes side plates, an output shaft assembly, a transmission module, and a closing and tripping assembly; The side plates include a first side plate and a second side plate; the first side plate and the second side plate are parallel to each other and arranged along the vertical direction, and the first side plate and the second side plate are connected by a connecting rod; a number of shaft holes are correspondingly arranged on the first side plate and the second side plate; the shaft holes include an output shaft mounting hole, a first rotary shaft mounting hole, and a second rotary shaft mounting hole; a first rotary shaft is installed at the first rotary shaft mounting hole through a rotary bearing, and a second rotary shaft is installed at the second rotary shaft mounting hole through a rotary bearing; The output shaft assembly includes an output shaft and an outer toggle arm; the output shaft is a cylindrical structure with splines and is installed at the output shaft mounting hole of the side plate through a rotary bearing; a key groove is provided on the outer toggle arm and is nested on the output shaft, and a rotary pin is also provided on the outer toggle arm; The transmission module is connected to the output shaft and drives the first rotary shaft to rotate through the transmission module; The closing and tripping assembly includes a closing lever, a torsion spring, a closing push plate, and a locking tongue; the closing lever is arranged on the second rotary shaft through a rotary bearing, and one end of the closing lever is located on the side of the first rotary shaft; the torsion spring is nested on the second rotary shaft, one end of the torsion spring is connected to the closing lever, and the other end of the torsion spring is connected to the circuit breaker, and the closing lever is pressed against the side of the first rotary shaft by the torque of the torsion spring; the closing push plate is tightly connected to the closing lever by bolts, and the locking tongue is tightly locked on the side of the first rotary shaft by a tongue screw and the locking tongue can rotate following the first rotary shaft; the locking tongue cooperates with the closing push plate to limit the closing push plate; a kidney-shaped hole is provided on the locking tongue, and the tongue screw passes through the kidney-shaped hole and is connected to the first rotary shaft.

2. The operating structure of a circuit breaker according to claim 1, characterized in that: The transmission module includes a first transmission plate and a second transmission plate; the bottom end of the first transmission plate is connected to the rotary pin on the outer toggle arm, and the bottom end of the first transmission plate can rotate around the rotary pin; the top end of the first transmission plate is connected to one end of the second transmission plate through a pin shaft, and the other end of the second transmission plate is fixedly connected to the end of the first rotary shaft. The rotation of the output shaft drives the first transmission plate to move up and down in the vertical direction, so as to drive the second transmission plate to drive the first rotary shaft to rotate.

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