CN118263065A - Transmission mounting structure of auxiliary alarm and shunt undervoltage accessory of circuit breaker - Google Patents

Abstract

The invention relates to a transmission mounting structure of an auxiliary alarm and shunt undervoltage accessory of a circuit breaker, which comprises a release shell (1), and is characterized in that an auxiliary switch (2), an alarm switch, a moving contact (4), an auxiliary push rod (6), an undervoltage release (9) and a shunt release (10) are arranged in the release shell (1). The invention relates to a motion of a whole breaker and an auxiliary alarm device through a simple push rod and a push rod, thereby realizing remote indication of the state information of the breaker, overload short-circuit fault occurrence and signal provision during free tripping. The shunt and under-voltage release have the same appearance, and the mounting grooves on the shell are the same and bilateral symmetry, so that the shunt under-voltage release can be mounted on two sides of the release according to requirements, accessories are convenient to mount, practical and efficient, and the quantity can be custom-mounted according to the requirements of users.

Description

Transmission mounting structure of auxiliary alarm and shunt undervoltage accessory of circuit breaker

Technical Field

The invention relates to the technical field of piezoelectric devices, in particular to a transmission mounting structure of auxiliary alarm and shunt undervoltage accessories of a circuit breaker.

Background

A circuit breaker refers to a switching device capable of closing, carrying and opening a current under normal circuit conditions and closing, carrying and opening a current under abnormal circuit conditions within a prescribed time.

The undervoltage relay or the release refers to a relay which enables a mechanical switch to be opened or closed with or without delay when the terminal voltage of the relay or the release is reduced to a preset value. Corresponding to the high-voltage protection, a tripping command is mainly sent out when a fault occurs, so that a matched switch trips, the accident is prevented from being enlarged, and the undervoltage release is increasingly widely applied at present. When the circuit is undervoltage, the armature of the undervoltage release is released. The free trip mechanism is also actuated. The shunt release is used for remote control, the coil is powered off during normal operation, and the start button is pressed to energize the coil when the distance control is required.

The traditional under-voltage release of the circuit breaker is of a typical electromagnet structure, an iron core of the electromagnet is ejected out by a spring, and electromagnetic force generated after a coil is electrified is opposite to spring force. When the voltage is greater than 70% of rated voltage, the electromagnetic force is greater than the spring force, the iron core is sucked into the electromagnet, and the circuit breaker can be normally closed. When the voltage is less than 35% of rated voltage, the electromagnetic force is less than the spring force, and the iron core is ejected out to push the traction rod to enable the circuit breaker to trip, so that the protection function of undervoltage tripping is achieved.

Electrical accessories are one of the most common electrical devices in circuit breaker auxiliary units. The auxiliary electric accessories are controlled to indicate the three states of breaking, closing and tripping of the breaker through the on/off switching of the contacts, and the alarm electric accessories send out alarm signals when the fault is tripped. In the circuit breaker, an auxiliary alarm device is triggered in a mechanical linkage mode, and then the working state of the circuit breaker is transmitted to the outside through an output end. The existing accessories are generally fixed in number, are fixed by a plurality of screws, are large in size and weight, are unfavorable for the light weight of the circuit breaker, are modularized, are integrated with auxiliary alarming under-voltage functions and the like, cannot well meet the diversity requirements of clients, are fixed in mounting positions, and are low in interchangeability.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a transmission mounting structure of auxiliary alarming and shunt undervoltage accessories of a breaker, which is convenient and fast to mount, practical and efficient, and can be custom-mounted according to the requirements of users.

The aim of the invention can be achieved by the following technical scheme:

The transmission mounting structure of the auxiliary alarm and shunt undervoltage accessory of the circuit breaker comprises a release shell, wherein an auxiliary switch, an alarm switch, a moving contact, an auxiliary push rod, an undervoltage release and a shunt release are arranged in the release shell, and the auxiliary push rod is connected to the release shell in a shaft way and rotates around a self shaft;

One end of the auxiliary push rod is abutted to the auxiliary switch, the other end of the auxiliary push rod is abutted to a rotating shaft of the circuit breaker, and when the circuit breaker is tripped, the moving contact drives the auxiliary push rod to rotate clockwise to extrude the auxiliary switch to realize mechanical linkage when the moving contact is repelled and bounced, so that the state indication of the circuit breaker is output;

the alarm switch is connected with the breaker mechanism through a shaft, and the breaker is tripped to trigger a micro switch in the alarm switch to output a breaker alarm signal;

The shunt release is internally provided with a coil, the current in the coil and the current of an external transmission circuit are changed in equal proportion, so that a changed electromagnetic attraction force is formed, the shunt release is provided with a shunt release latch hook, the release is opened and closed to drive the shunt release latch hook to move back and forth, and a breaker traction rod is pulled to realize the tripping of the mechanism;

The under-voltage release is provided with an under-voltage release latch hook, the end part of the under-voltage release latch hook is abutted against the traction rod, the power supply voltage drops to the range of the release action condition, and the under-voltage release latch hook pushes the traction rod forwards to realize the tripping of the mechanism.

Further, an auxiliary ejector rod and an auxiliary micro switch are arranged on the auxiliary switch, the auxiliary ejector rod moves up and down to extrude the auxiliary micro switch to realize the opening and closing of the auxiliary micro switch, the input end and the output end of the auxiliary micro switch are electrically connected with an external signal collecting circuit, and the opening and closing of the auxiliary micro switch form the electric signal change of the external signal collecting circuit.

Further, the front end of the auxiliary push rod is provided with a protruding cylinder, the protruding cylinder corresponds to the auxiliary push rod in position, and the auxiliary push rod rotates to drive the protruding cylinder to extrude the auxiliary push rod to move up and down.

Further, an alarm push rod is arranged below the alarm switch, the alarm push rod is fixed at two ends of a main shaft of the circuit breaker mechanism, the main shaft of the mechanism is connected with a side plate of the circuit breaker mechanism in a shaft mode, and the circuit breaker trips to drive the alarm push rod to rotate, so that a micro switch in the alarm switch is triggered to output a circuit breaker alarm signal.

Further, a shunt release ejector rod is arranged on the shunt release, the shunt release ejector rod is abutted to a release rotating shaft, and when the breaker is opened or recuckled, the rotating shaft drives the shunt release ejector rod to move upwards to extrude a micro switch button arranged in the shunt release.

Further, the end parts of the shunt release latch hook and the undervoltage release latch hook are provided with a reverse hook structure matched with the traction rod.

Further, the under-voltage release and the shunt release are consistent in shell shape.

Further, mounting grooves are symmetrically formed in the two sides of the release shell, and the shapes of the mounting grooves correspond to the shapes of the under-voltage release and the shunt release shell.

Further, the auxiliary push rod and the moving contact movement track are positioned in the same plane.

Further, the release shell is provided with a U-shaped groove, and the auxiliary push rod is connected to the release shell in a shaft way through the U-shaped groove.

Compared with the prior art, the invention has the following advantages:

(1) The invention relates to a motion of a whole breaker and an auxiliary alarm device through a simple push rod and a push rod, thereby realizing remote indication of the state information of the breaker, overload short-circuit fault occurrence and signal provision during free tripping.

(2) The shunt release and the under-voltage release are identical in installation size, compared with the shunt release, the under-voltage release is provided with fewer micro switches and ejector rods in an internal structure, and a power supply wiring seat is externally arranged. The same mounting grooves are symmetrically formed in the release shell in a left-right mode, so that the shunt under-voltage release can be mounted on the left side or the right side and two shunt or under-voltage releases can be mounted. The accessory is convenient to install, practical and efficient, strong in interchangeability and capable of being custom-installed according to user requirements.

(3) The auxiliary push rod is provided with a step design at one side close to the alarm push rod, so that the functions of the two push rods cannot be repeated or interfered. The auxiliary alarm switch is provided with a plurality of clamping positions and can be assembled and installed at will.

Drawings

FIG. 1 is a schematic diagram of the installation position of auxiliary alarm and shunt under-voltage accessories of the invention;

FIG. 2 is a schematic diagram of the internal structure of the auxiliary alarm of the present invention;

FIG. 3 is a schematic diagram of the internal structure of the undervoltage release of the present invention;

Fig. 4 is a schematic diagram of an internal structure of the shunt release of the present invention;

FIG. 5 is a schematic view of an auxiliary push rod according to the present invention;

FIG. 6 is a schematic view of an auxiliary pushrod mounting structure according to the present invention;

FIG. 7 is a schematic diagram of the structure of the alarm push rod of the present invention;

FIG. 8 is a schematic diagram of the mounting structure of the alarm push rod of the present invention;

FIG. 9 is a schematic diagram of the mounting structure of the warning push rod and auxiliary push rod of the present invention;

fig. 10 is a side cross-sectional view of the auxiliary alarm switch and shunt release of the present invention.

In the figure: 1 shell, 2 auxiliary switch, 21 auxiliary ejector rod, 22 auxiliary micro switch, 3 alarm push rod, 4 moving contact, 5 base, 6 auxiliary push rod, 61 raised cylinder, 7 static contact, 8 rotating shaft, 9 under voltage release, 91 under voltage release latch hook, 92 under voltage power supply wiring seat, 10 shunt release, 101 shunt release latch hook, 102 shunt release ejector rod, 11 traction rod, 12 side plate and 13 mechanism main shaft.

Detailed Description

The invention will now be described in detail with reference to the drawings and specific examples.

Examples

As shown in fig. 1 and 10, the transmission mounting structure of the auxiliary alarm and shunt undervoltage accessory of the circuit breaker comprises a release shell 1, wherein an auxiliary switch 2, an alarm switch, a moving contact 4, an auxiliary push rod 6, an undervoltage release 9 and a shunt release 10 are arranged in the release shell 1, the release shell 1 is provided with a U-shaped groove, the auxiliary push rod 6 is connected with the release shell 1 through the U-shaped groove in a shaft manner and rotates around a self shaft, and the movement track of the auxiliary push rod 6 and the moving contact 4 are positioned in the same plane.

As shown in fig. 5 and 6, one end of the auxiliary push rod 6 is abutted on the auxiliary switch 2, the other end is abutted on the rotating shaft 8 of the circuit breaker, and when the circuit breaker is tripped, the moving contact 4 drives the auxiliary push rod 6 to rotate clockwise to extrude the auxiliary switch 2 to realize mechanical linkage when the circuit breaker is sprung off, so that the state indication of the circuit breaker is output. The auxiliary switch 2 is provided with an auxiliary ejector rod 21 and an auxiliary micro switch 22, the auxiliary ejector rod 21 moves up and down to squeeze the auxiliary micro switch 22 to realize the opening and closing of the auxiliary micro switch 22, the input end and the output end of the auxiliary micro switch 22 are electrically connected with an external signal collecting circuit, and the opening and closing of the auxiliary micro switch 22 form the electric signal change of the external signal collecting circuit. The front end of the auxiliary push rod 6 is provided with a protruding cylinder 61, the protruding cylinder 61 corresponds to the auxiliary push rod 21 in position, and the auxiliary push rod 6 rotates to drive the protruding cylinder 61 to squeeze the auxiliary push rod 21 to move up and down. The moving contact 4 and the fixed contact 7 are separated and sprung, the auxiliary push rod 6 is driven to move upwards clockwise, meanwhile, the front end of the auxiliary push rod 6 is provided with the convex cylinder 61 corresponding to the auxiliary push rod 21, when the auxiliary push rod 6 moves upwards, the convex cylinder 61 can push the auxiliary push rod 21 upwards until the push rod in the auxiliary switch 2 presses a key of the auxiliary micro switch 22 to stop, mechanical linkage is realized, and therefore the state indication of the circuit breaker is output.

As shown in fig. 7 and 8, the alarm switch is connected with the shaft of the circuit breaker mechanism, and the circuit breaker is tripped to trigger the micro switch in the alarm switch to output a circuit breaker alarm signal; the alarm push rod 3 is arranged below the alarm switch, the alarm push rod 3 is fixed at two ends of the main shaft 13 of the circuit breaker mechanism, the main shaft 13 of the mechanism is connected with the side plate 12 of the circuit breaker mechanism in a shaft mode, the circuit breaker trips to drive the alarm push rod 3 to rotate, and a micro switch in the alarm switch is triggered to output a circuit breaker alarm signal. The auxiliary pushing 6 rod is provided with a step design at one side close to the alarm pushing rod 3, so that the functions of the two pushing rods cannot be repeated or interfered.

As shown in fig. 2, the auxiliary alarm switch is connected through a plurality of clamping positions and can be assembled and installed at will.

As shown in fig. 4, a coil is arranged in the shunt release 10, the current in the coil and the current of an external transmission circuit are changed in equal proportion, so that a changed electromagnetic attraction force is formed, a shunt release latch hook 101 is arranged on the shunt release 10, and the release is opened and closed to drive the shunt release latch hook 101 to move back and forth, so as to pull a breaker traction rod 11, and realize the tripping of a mechanism; the shunt release 10 is provided with a shunt release ejector rod 102, the shunt release ejector rod 102 is abutted to a release rotating shaft 8, and when the breaker is opened or closed again, the rotating shaft 8 drives the shunt release ejector rod 102 to move upwards to extrude a micro switch button arranged in the shunt release. When the breaker is in a breaking and re-buckling state, the ejector rod 102 of the shunt release is pushed upwards by the rotating shaft 8, and then the ejector rod extrudes a micro switch key in the shunt release, so that a coil of the shunt release has no current; after closing, the shunt release is in a working state, after current appears in the coil, the shunt release lock hook 101 moves backwards, pulls the traction rod 11, and the mechanism trips.

As shown in fig. 3, the under-voltage release 9 is provided with an under-voltage release latch hook 91, the end of the under-voltage release latch hook 91 abuts against the traction rod 11, the power supply voltage drops to the release action condition range, and the under-voltage release latch hook 91 pushes the traction rod 11 forward to realize the tripping of the mechanism. When the power supply voltage of the undervoltage release does not reach the closing action condition, the latch hook 91 of the undervoltage release is always hooked on the traction rod 11; in the closed state of the circuit breaker, the power supply voltage suddenly drops to the tripping action condition range, and the push rod pushes the traction rod forwards to trip the mechanism.

As shown in fig. 3 and 4, the ends of the shunt release latch hook 101 and the under-voltage release latch hook 91 are provided with a barb structure for cooperation with the traction lever 11.

As shown in fig. 1, the under-voltage release 9 and the shunt release 10 have the same shape. Mounting grooves are symmetrically formed in the two sides of the release shell 1, and the shape of each mounting groove corresponds to the shape of the shells of the undervoltage release 9 and the shunt release 10. The shunt release and the under-voltage release are identical in installation size, compared with the shunt release, the under-voltage release is provided with fewer micro switches and ejector rods in an internal structure, and a power supply wiring seat is externally arranged. The same mounting grooves are symmetrically formed in the release shell in a left-right mode, so that the shunt under-voltage release can be mounted on the left side or the right side and two shunt or under-voltage releases can be mounted. The accessory is convenient to install, practical and efficient, strong in interchangeability and capable of being custom-installed according to user requirements.

When the breaker is overloaded, short-circuited and other faults occur, the moving contact can trigger the auxiliary alarm device to output signals to remind a responsible person of the state of the breaker under the condition that the breaker mechanism is free to trip. Therefore, the device can remotely know the working condition of the circuit breaker. The ejector rod in the shunt release contacts with the rotating shaft to realize conversion between normally closed and normally open of the internal micro switch, and finally the circuit breaker is remotely controlled to be disconnected by means of an electric signal. The undervoltage release is controlled by the power supply voltage in the circuit breaker.

In summary, the invention relates to the motion of the whole breaker and the auxiliary alarm device through the simple push rod and the push rod, thereby realizing remote indication of the state information of the breaker, overload short-circuit fault occurrence and signal provision during free tripping. The shunt and under-voltage release have the same appearance, and the mounting grooves on the shell are the same and bilateral symmetry, so that the shunt under-voltage release can be mounted on two sides of the release according to requirements, accessories are convenient to mount, practical and efficient, and the quantity can be custom-mounted according to the requirements of users.

It should be noted that, in the description of the present invention, the terms "upper," "lower," "inner," "outer," "front," "rear," "both ends," "one end," "the other end," and the like indicate an azimuth or a positional relationship based on that shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present invention. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present invention.

Claims (10)

1. The transmission mounting structure of the auxiliary alarm and shunt undervoltage accessory of the circuit breaker comprises a release shell (1) and is characterized in that an auxiliary switch (2), an alarm switch, a moving contact (4), an auxiliary push rod (6), an undervoltage release (9) and a shunt release (10) are arranged in the release shell (1), and the auxiliary push rod (6) is axially connected to the release shell (1) and rotates around a self shaft;

One end of the auxiliary push rod (6) is abutted against the auxiliary switch (2), the other end of the auxiliary push rod is abutted against the rotating shaft (8) of the circuit breaker, and when the circuit breaker is tripped, the moving contact (4) drives the auxiliary push rod (6) to rotate clockwise to extrude the auxiliary switch (2) to realize mechanical linkage when the circuit breaker is repelled and sprung, so that the state indication of the circuit breaker is output;

the alarm switch is connected with the breaker mechanism through a shaft, and the breaker is tripped to trigger a micro switch in the alarm switch to output a breaker alarm signal;

A coil is arranged in the shunt release (10), the current in the coil and the current of an external transmission circuit are changed in equal proportion, so that the changed electromagnetic attraction is formed, a shunt release lock hook (101) is arranged on the shunt release (10), the release is opened and closed to drive the shunt release lock hook (101) to move back and forth, and a breaker traction rod (11) is pulled to realize the tripping of the mechanism;

the under-voltage release (9) is provided with an under-voltage release lock hook (91), the end part of the under-voltage release lock hook (91) is abutted against the traction rod (11), the power supply voltage drops to the release action condition range, and the under-voltage release lock hook (91) pushes the traction rod (11) forwards to realize the tripping of the mechanism.

2. The transmission mounting structure of the auxiliary alarm and shunt undervoltage accessory of the circuit breaker according to claim 1, wherein an auxiliary ejector rod (21) and an auxiliary micro switch (22) are arranged on the auxiliary switch (2), the auxiliary ejector rod (21) moves up and down to press the auxiliary micro switch (22) to realize the opening and closing of the auxiliary micro switch (22), the input end and the output end of the auxiliary micro switch (22) are electrically connected with an external signal collecting circuit, and the opening and closing of the auxiliary micro switch (22) form the electric signal change of the external signal collecting circuit.

3. The transmission mounting structure of the auxiliary alarm and shunt undervoltage accessory of the circuit breaker according to claim 2, wherein the front end of the auxiliary push rod (6) is provided with a protruding cylinder (61), the protruding cylinder (61) corresponds to the auxiliary push rod (21) in position, and the auxiliary push rod (6) rotates to drive the protruding cylinder (61) to squeeze the auxiliary push rod (21) to move up and down.

4. The transmission mounting structure of the auxiliary alarming and shunt undervoltage accessory of the circuit breaker according to claim 1, wherein an alarming push rod (3) is arranged below the alarming switch, the alarming push rod (3) is fixed at two ends of a main shaft (13) of the circuit breaker mechanism, the main shaft (13) of the mechanism is connected with a side plate (12) of the circuit breaker mechanism in a shaft mode, the circuit breaker is tripped to drive the alarming push rod (3) to rotate, and a micro switch in the alarming switch is triggered to output a circuit breaker alarming signal.

5. The transmission mounting structure of the auxiliary alarm and shunt undervoltage accessory of the circuit breaker according to claim 1, wherein a shunt release ejector rod (102) is arranged on the shunt release (10), the shunt release ejector rod (102) is abutted to a release rotating shaft (8), and when the circuit breaker is disconnected or rebuckled, the rotating shaft (8) drives the shunt release ejector rod (102) to move upwards to press a micro switch button arranged in the shunt release.

6. The transmission mounting structure of the auxiliary alarm and shunt undervoltage accessory of the circuit breaker according to claim 1, wherein the end parts of the shunt release latch hook (101) and the undervoltage release latch hook (91) are provided with a reverse hook structure for being matched with a traction rod (11).

7. The transmission mounting structure of the auxiliary alarm and shunt undervoltage accessory of the circuit breaker according to claim 1, wherein the outer shell shapes of the undervoltage release (9) and the shunt release (10) are consistent.

8. The transmission mounting structure of the auxiliary alarm and shunt undervoltage accessory of the circuit breaker according to claim 1 is characterized in that mounting grooves are symmetrically formed on two sides of the release shell (1), and the shape of each mounting groove corresponds to the shape of the shell of the undervoltage release (9) and the shunt release (10).

9. The transmission mounting structure of the auxiliary alarm and shunt undervoltage accessory of the circuit breaker according to claim 1 is characterized in that the auxiliary push rod (6) and the moving track of the moving contact (4) are positioned in the same plane.

10. The transmission mounting structure of the auxiliary alarm and shunt undervoltage accessory of the circuit breaker according to claim 1, wherein the release shell (1) is provided with a U-shaped groove, and the auxiliary push rod (6) is connected with the release shell (1) in a shaft way through the U-shaped groove.