CN111584311B

CN111584311B - Divide-shut display device of direct current quick circuit breaker

Info

Publication number: CN111584311B
Application number: CN201910424642.7A
Authority: CN
Inventors: 江阳; 黄依婷; 涂勇
Original assignee: Hangzhou Derrida Electric Co ltd
Current assignee: Hangzhou Derrida Electric Co ltd
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2022-07-08
Anticipated expiration: 2039-05-21
Also published as: CN111584311A

Abstract

The invention discloses a switching-on and switching-off display device of a direct current quick circuit breaker, which comprises a shell, an ejector rod, an observation window, a switching-on and switching-off display mechanism and an aviation socket, wherein the observation window and the aviation socket are arranged on the upper side and the lower side of the front surface of the shell, the ejector rod is arranged on the back side of the shell, the switching-on and switching-off display mechanism is arranged in the shell, two ends of the ejector rod are respectively connected with a moving contact of the switching-on and switching-off display mechanism and a moving contact of the quick circuit breaker, the ejector rod stretches and retracts along with the switching-off and switching-on actions of the moving contact to drive the switching-on and switching-off display mechanism to act, the switching-on and switching-off position indication is made, and a switching-off and switching-on feedback signal is output through the aviation socket. The device does not need precise adjustment and size adjustment during installation, is not influenced by abrasion of parts and overlarge fit clearance, and can ensure the accuracy of the position indication of the opening and closing.

Description

Divide-shut display device of direct current quick circuit breaker

Technical Field

The invention relates to a component of medium and low voltage direct current power transmission and distribution equipment, in particular to a switching display device of a direct current quick circuit breaker.

Background

The on-off display device is a structure for displaying the on-off state in the direct current quick circuit breaker, the existing on-off display device needs to make accurate adjustment on the relative position of the device parts when being installed, so that accurate indication can be made on the on-off state after each part is linked, the time required by the adjustment process is overlong, and after the device runs for a long time, the on-off indication position cannot be in place due to abrasion among the parts and larger fit clearance.

Disclosure of Invention

The invention aims to provide a switching and combining display device of a direct-current quick circuit breaker, which is used for solving the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a divide-shut display device of direct current quick circuit breaker, which comprises an outer shell, the ejector pin, the observation window, divide-shut brake display structure and aviation socket, observation window and aviation socket set up about the front of shell, the ejector pin is established at the dorsal part of shell, divide-shut brake display structure establishes inside the shell, the ejector pin both ends are linked with the moving contact of divide-shut brake display structure and quick circuit breaker respectively, the branch of ejector pin follow-up contact, the combined floodgate action is and stretch out and draw back, drive divide-shut brake display structure action, make divide-shut brake position indication, and divide through aviation socket output branch, combined floodgate feedback signal.

Preferably, for the switching and closing display device of the direct current quick circuit breaker, the switching and closing display structure comprises a connecting lever, an indicating plate, a first spring, a second spring, an auxiliary switch, a switching and stopping gear and a switching and stopping gear, wherein one end of the connecting lever and the middle part of the indicating plate are respectively provided with a rotating shaft which can rotate around the connecting lever, the rotating shafts of the two are positioned on the same axis, a connecting rod vertical to the crank arm is arranged on the rotating shaft of the crank arm, one end of the connecting rod is connected with the ejector rod, the other end of the connecting rod is pulled by a fixed second spring, the other end of the crank arm far away from the rotating shaft is provided with an open slot, the open slot bites the tail end of the indication board to shift the indication board, one end of the first spring is connected with the tail end of the indication board, the other end is fixed, and the fixed point is located the axis at the rotation axis place of turning arm and sign, and the separating brake stop gear sets up from top to bottom at the front end of sign respectively with the combined floodgate stop gear, and auxiliary switch establishes the side at the connecting rod.

Preferably, for the switching and closing display device of the direct current fast circuit breaker, the switching off and stopping gear and the switching on and stopping gear are respectively positioned at the upper and lower positions of the inner side of the observation window.

Preferably, the direct current quick circuit breaker's deciliter display device, the sign is arrow-shaped structure, and the both sides of its front end are equipped with separating brake indicator and closing brake indicator respectively.

Preferably, for the switching and closing display device of the direct current quick circuit breaker, the auxiliary switch is provided with two contacts which are connected with the aviation socket in the same power loop, and the two contacts respectively correspond to the switching-off signal feedback loop and the switching-on signal feedback loop of the aviation switch.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the tail end of the indicator is freely suspended in the open slot of the crank arm in an initial state, the indicator and the crank arm are not in contact with each other, when the ejector rod acts along with the contact, the connecting rod and the crank arm are driven to rotate, the open slot of the crank arm shifts the tail end of the indicator, so that the indicator rotates around a rotating shaft of the indicator, the front end of the indicator stops after touching an opening stop gear or a closing stop gear, and an opening and closing indication mark at the front end of the indicator can be clearly seen through the observation window. The opening and closing display device installation chamber does not need to accurately adjust the sizes of all parts, saves time, is not affected by part abrasion and overlarge fit clearance in use, and can keep opening and closing position indication in place for a long time.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a switching-on/off display structure according to the present invention;

FIG. 3 is a schematic diagram showing the states of the observation window at the position of the switch-on and the switch-off;

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a direct current quick circuit breaker's deciliter display device, which comprises a housing 2, ejector pin 1, observation window 3, divide-shut brake display structure and aviation socket 4, observation window 3 and aviation socket 4 set up about the front of shell 2, ejector pin 1 is established at the dorsal part of shell 2, divide-shut brake display structure establishes inside shell 2, ejector pin 1 both ends are linked with divide-shut brake display structure and quick circuit breaker's moving contact 5 respectively, the branch of ejector pin 1 follow-up contact 5, the combined floodgate action is and flexible, it shows the structure action to drive divide-shut brake, make divide-shut brake position indication, and divide through aviation socket 4 output branch, combined floodgate feedback signal.

In another embodiment, the switching-on/off display structure comprises a connecting lever 6, an indicating plate 7, a first spring 10, a second spring 12, an auxiliary switch 11, a switching-off stop 8 and a switching-on stop 9, wherein rotating shafts capable of rotating around the connecting lever 6 and the indicating plate 7 are arranged at one end of the connecting lever 6 and the middle part of the indicating plate 7, the rotating shafts of the connecting lever and the indicating plate are positioned on the same axis, a connecting rod perpendicular to the connecting lever 6 is arranged on the rotating shaft of the connecting lever 6, one end of the connecting rod is connected with the ejector rod 1, the other end of the connecting rod is pulled by the fixed second spring 12, an open slot is arranged at the other end of the connecting lever 6 far away from the rotating shaft, the open slot bites the tail end of the indicating plate 7 to stir the indicating plate 7, one end of the first spring 10 is connected with the tail end of the indicating plate 7, the other end of the first spring is fixed, the fixed point is positioned on the axis where the rotating shafts of the connecting lever 6 and the indicating plate 7 are positioned, the switching-on the switching-off stop 8 and the switching-on the front end of the indicating plate 7 respectively, the auxiliary switch 11 is arranged at the side of the connecting rod.

In another embodiment, the opening gear 8 and the closing gear 9 are respectively located at the upper and lower positions inside the observation window 3.

In another embodiment, the indicating board 7 is an arrow-shaped structure, and both sides of the front end of the indicating board are respectively provided with a switching-off indicating mark and a switching-on indicating mark.

In another embodiment, the auxiliary switch 11 has two contacts, which are connected to the aviation socket 4 in the same power circuit, and the two contacts respectively correspond to the opening signal feedback circuit and the closing signal feedback circuit of the aviation switch.

The process that this divide-shut brake display structure sends and divides, closes a floodgate instruction specifically does: when the moving contact 5 is switched on, the ejector rod 1 acts along with the moving contact to push the connecting lever 6 to rotate anticlockwise around the rotating shaft, the open slot of the connecting lever 6 shifts the tail end of the indicator 7, the indicator 7 rotates clockwise around the rotating shaft of the indicator, the front end of the indicator 7 deviates until the indicator stops when being limited by the switching-on stop gear 9, at the moment, the switching-on indicating mark can be seen through the observation window 3, in the process, the connecting rod originally pressed on the rotating shaft of the connecting lever 6 on the auxiliary switch 11 is separated from the connecting rod, the contact of the auxiliary switch 11 is released and converted, so that a switching-on signal feedback loop of the aviation socket 4 is switched on, and a switching-on signal is fed back; when moving contact 5 separating brake, ejector pin 1 moves along with it, pulling connecting lever 6, second spring 12 provides the counter-force simultaneously, make connecting lever 6 rotate clockwise around its rotation axis, the tail end of sign 7 is stirred to connecting lever 6's open slot, the sign is around its rotation axis anticlockwise rotation, the front end skew of sign 7 stops until being stopped the fender 8 restriction by the separating brake, can see separating brake instruction sign through observation window 3 this moment, at this in-process, connecting rod on the rotation axis of connecting lever 6 still can compress the auxiliary switch 11 of its side, make the contact conversion of auxiliary switch 11, thereby make aviation socket 4's separating brake signal feedback return circuit switch-on, feedback out separating brake signal.

When the initial state, turning arm 6, sign 7 all are located the same axis, and the tail end of sign 7 is at this moment in the free suspension of the open slot of turning arm 6, and the two do not contact. The device does not need to be precisely adjusted in size during installation, is not affected by abrasion of parts and overlarge fit clearance, and can ensure the accuracy of opening and closing position indication.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A switching display device of a direct current fast breaker comprises a shell, an ejector rod, an observation window, a switching display structure and an aviation socket, and is characterized in that the observation window and the aviation socket are arranged up and down on the front side of the shell, the ejector rod is arranged on the back side of the shell, the switching display structure is arranged in the shell, two ends of the ejector rod are respectively connected with the switching display structure and a moving contact of the fast breaker, the ejector rod stretches and retracts along with the switching-off and switching-on actions of the moving contact to drive the switching display structure to act, the switching position indication is made, and a switching-off and switching-on feedback signal is output through the aviation socket;

the opening and closing display structure comprises a connecting lever, an indicating plate, a first spring, a second spring, an auxiliary switch, an opening stop gear and a closing stop gear, wherein rotary shafts capable of rotating around the connecting lever are arranged at one end of the connecting lever and the middle part of the indicating plate, the rotary shafts of the connecting lever and the indicating plate are positioned on the same axis, a connecting rod perpendicular to the connecting lever is arranged on the rotary shaft of the connecting lever, one end of the connecting rod is connected with a mandril, the other end of the connecting rod is pulled by the fixed second spring, an open slot is arranged at the other end of the connecting lever, which is far away from the rotary shaft of the connecting lever, the open slot bites the tail end of the indicating plate to shift the indicating plate, one end of the first spring is connected with the tail end of the indicating plate, the other end of the first spring is fixed, a fixed point is positioned on the axis where the rotary shafts of the connecting lever and the indicating plate are positioned, the opening stop gear and the closing stop gear are respectively arranged above and below the front end of the indicating plate, and the auxiliary switch is arranged beside the connecting rod;

the opening gear stopping and the closing gear stopping are respectively positioned at the upper and lower positions of the inner side of the observation window;

the indicator is in an arrow-shaped structure, and both sides of the front end of the indicator are respectively provided with a brake opening indicator and a brake closing indicator.

2. The switch-on/switch-off display device of the direct current quick circuit breaker according to claim 1, wherein the auxiliary switch has two contacts, which are connected to the aviation socket in the same power circuit, and the two contacts respectively correspond to the opening signal feedback circuit and the closing signal feedback circuit of the aviation switch.