CN213366502U - Mechanical reclosing prevention interlocking device of circuit breaker - Google Patents

Abstract

The utility model discloses a prevent mechanical reclosing lock interlock for circuit breaker, include: the circuit breaker comprises a fixed plate, a circuit breaker main shaft and a circuit breaker main shaft, wherein the circuit breaker main shaft can vertically penetrate through the fixed plate in a rotatable manner, and the main shaft is provided with a crank arm; a closing button assembly, which is: the ejector rod is slidably supported on the ejector rod support, two ends of the ejector rod extend out, and the right end of the ejector rod is hinged with the swing rod; the closing tripping shaft can vertically penetrate through the fixed plate in a rotatable way, and a bent plate is fixed on the closing tripping shaft; the closing tripping shaft is connected with the closing mechanism, and when the closing tripping shaft rotates clockwise, closing is triggered, otherwise, closing cannot be carried out; the two ends of the connecting rod are respectively and horizontally hinged on the free end of the crank arm of the main shaft and the oscillating rod, and the length of the connecting rod is designed so that when the main shaft is in a closing state, the other end of the oscillating rod is in a state of not limiting a bent plate; and conversely, when the main shaft is in the opening state, the other end of the swing rod is in the state of limiting the bent plate. The utility model discloses if can make after the combined floodgate invalid that closes a floodgate once more, improve interlocking barrier propterty, reduce the life who brings the explosion chamber because of the maloperation and shorten.

Description

Mechanical reclosing prevention interlocking device of circuit breaker

Technical Field

The utility model relates to a circuit breaker prevent mechanical reclosing lock interlock.

Background

The high-voltage circuit breaker is the most important protection and control equipment of the power system, and the service life of the high-voltage circuit breaker is determined by the mechanical operation life of a spring mechanism and the mechanical life of an arc extinguishing chamber. In practical application, the mechanical switching-on operation times are equal to the switching-off times of the arc extinguish chamber, namely, the service life of the arc extinguish chamber is shortened once when the arc extinguish chamber is switched on once, and meanwhile, the abrasion times of contacts of the arc extinguish chamber are increased, so that the electrical service life of the arc extinguish chamber is further influenced. Therefore, reducing the number of closing times is the most direct method for prolonging the mechanical life of the circuit breaker, and the circuit breaker is ensured to meet the specified operation, and the prevention of artificial false closing operation is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a mechanical reclosing lock interlock is prevented of circuit breaker is provided, when the device can ensure the effective reliable combined floodgate of circuit breaker, avoid the artificial life who produces the operation action extension explosion chamber of mistake combined floodgate.

Solve above-mentioned technical problem, the utility model discloses the technical scheme who adopts as follows.

The utility model provides a circuit breaker prevent mechanical reclosing interlock, characterized by includes:

a vertical fixing plate 1, on which a main shaft hole and a closing tripping shaft hole are opened, a horizontal operation main shaft 4 of the circuit breaker can rotatably and vertically pass through the main shaft hole, and a disc-shaped crank arm 5 is fixed on the horizontal operation main shaft;

a closing button assembly 16 fixed to the upper left of the main shaft hole of the fixing plate 1, which is: a horizontal ejector rod 9 is slidably supported on an ejector rod support 11, two ends of the horizontal ejector rod extend out, the left end of the ejector rod is a closing button 8, the right end of the ejector rod is horizontally hinged with one end of a swing rod 13, and a reset spring 10 is sleeved on the ejector rod between the closing button 8 and the left end of the ejector rod support 11 to enable the ejector rod to be reset leftwards all the time;

a closing tripping shaft 6 which can vertically penetrate through a closing tripping shaft hole positioned at the right upper part of the main shaft hole of the fixed plate 1 in a rotatable manner, and a bent plate 7 which extends out in the radial direction is fixed on the closing tripping shaft 6; the bent plate 7 is arranged so that when the ejector rod and the swing rod of the closing button assembly 16 are in a straight line and move rightwards, the other end of the swing rod can limit the anticlockwise swing of the bent plate, and when the swing rod of the closing button assembly 16 inclines upwards relative to the ejector rod and moves rightwards, the other end of the swing rod does not limit the anticlockwise swing of the bent plate;

the closing tripping shaft 6 is connected with a closing mechanism, and when the closing tripping shaft rotates clockwise, closing is triggered, otherwise, closing cannot be carried out;

a connecting rod 12, two ends of which are respectively horizontally hinged on the free end of the disc-shaped crank arm of the horizontal operation main shaft and the swing rod, and the length of the connecting rod is designed to ensure that when the horizontal operation main shaft is in a closing state, the other end of the swing rod is in a state of not limiting a bent plate; and conversely, when the horizontal operation main shaft is in the opening state, the other end of the swing rod is in the state of limiting the bent plate.

Therefore, when the horizontal operation main shaft is in a closing state, the other end of the swing rod is in a state of not limiting the anticlockwise swing of the bending plate through the connecting rod. When the horizontal operation main shaft rotates clockwise by 34 degrees from the switch-on position to the switch-off position, the connecting rod enables the ejector rod and the swing rod to be in a straight line, and the other end of the swing rod is in a state of limiting the bent plate to swing anticlockwise. At the moment, when the closing button is operated, the closing tripping shaft cannot be triggered to perform the second closing action, namely, the closing state, the closing operation is invalid.

On the basis, the utility model discloses can have following multiple preferred scheme:

a large bearing sleeve 3 is fixed on the horizontal operation main shaft hole to support the horizontal operation main shaft, and a small bearing sleeve is fixed on the closing tripping shaft hole to support the closing tripping shaft.

The disc-shaped crank arm of the horizontal operation main shaft is a disc-shaped crank arm: the middle of the disc is provided with a shaft hole which is fixed on the horizontal operation main shaft, and the edge of the disc is provided with a radial bulge to form a disc-shaped crank arm.

The structure of the fixed bent plate 7 of the closing tripping shaft is as follows: and the bent plate is fixed on the section with one end milled flat by adopting a screw fastening mode.

The bent plate extends along two radial ends of the closing tripping shaft 6, the upper part is a trigger part of the closing button, and the lower part is a rotation limiting part of the closing tripping shaft.

The pendulum rod structure does: one end of the swing rod is a square shaft, the other end of the swing rod is in a round shaft form, a notch is milled at the middle of the end part of the square shaft end, corresponding holes are formed in the left surface and the right surface of the notch, and the swing rod can swing up and down through the hinge joint of a horizontal hinge pin and the right end of the ejector rod.

Horizontal operation is main epaxial the dish type turning arm is from separating brake state anticlockwise rotation to closing state during, the connecting rod swing breaks away from to the top the trigger area of bent plate does not restrict bent plate anticlockwise swing's state, the operation this moment closing button will unable trigger closing trip shaft carries out the combined floodgate action of second time, promptly when the horizontal operation main shaft is in closing state, the operation closing button can't trigger the bent plate, the unable action of bent plate, closing is invalid.

When the position of the horizontal operation main shaft rotates clockwise by 34 degrees from a switching-on position to a switching-off position, the connecting rod moves clockwise to enter a switching-on button triggering area of the bent plate, and the state that the bent plate swings anticlockwise is limited. At this time, if the closing button is operated, the closing tripping shaft is effectively triggered to perform a closing action, that is, when the horizontal operation main shaft is in an opening state, the closing button is operated to trigger the bent plate to perform closing, and at this time, the closing action is effective.

Compared with the prior art, the utility model discloses the technique has following advantage:

(1) a prevent mechanical reclosing lock interlock for circuit breaker, can also enable the secondary to close a floodgate inefficacy under artifical maloperation, avoid producing the second or close a floodgate many times under the combined floodgate state and shorten the life of explosion chamber.

(2) A prevent mechanical reclosing lock interlock simple structure for circuit breaker, low in manufacturing cost, easy to maintain.

Drawings

The invention will be described in detail with reference to the drawings and specific embodiments

Fig. 1 is a schematic front structural view of an embodiment of the present invention;

fig. 2 is a schematic view of a four-bar linkage structure according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a closing state according to an embodiment of the present invention;

fig. 4 is a schematic view of the opening state of the embodiment of the present invention;

fig. 5 is a schematic structural view of a closing button according to an embodiment of the present invention.

Reference numbers on the drawings: 1-fixing plate, 2-small bearing bush, 3-large bearing bush, 4-horizontal operation main shaft, 5-disk type crank arm, 6-closing tripping shaft, 7-bent plate, 8-button, 9-ejector rod, 10-reset spring, 11-support, 12-connecting rod, 13-oscillating rod, 14-pin shaft, 15-four connecting rod and 16-closing button component.

Detailed Description

As shown in fig. 1-5, the utility model discloses a circuit breaker prevent mechanical reclosing interlock embodiment includes:

a vertical fixing plate 1, on which a main shaft hole and a closing tripping shaft hole are opened, a horizontal operation main shaft 4 of the circuit breaker can rotatably and vertically pass through the main shaft hole, and a disc-shaped crank arm 5 is fixed on the horizontal operation main shaft;

a closing button assembly 16 fixed to the upper left of the horizontal operation spindle hole of the fixing plate 1, which is: a horizontal ejector rod 9 is slidably supported on a guide shaft sleeve of an ejector rod support 11, two ends of the horizontal ejector rod extend out, the left end of the ejector rod is a closing button 8, the right end of the ejector rod is horizontally hinged with one end of a swing rod 13, and a reset spring 10 is sleeved on the ejector rod between the closing button 8 and the left end of the ejector rod support 11 to enable the ejector rod to be reset leftwards all the time;

a closing tripping shaft 6 which can vertically penetrate through a closing tripping shaft hole positioned at the right upper part of the main shaft hole of the fixed plate 1 in a rotatable manner, and a bent plate 7 which extends out in the radial direction is fixed on the closing tripping shaft 6; the bent plate 7 is arranged such that the other end of the swing rod can limit the counterclockwise swing of the bent plate when the push rod and the swing rod of the closing button assembly 16 are aligned and move to the right, and the other end of the swing rod does not limit the counterclockwise swing of the bent plate when the swing rod of the closing button assembly 16 tilts upward relative to the push rod and moves to the right.

The two ends of the connecting rod 12 are respectively and horizontally hinged at the free end of the disc-shaped crank arm of the horizontal operation main shaft and the middle of the oscillating bar, and the length of the connecting rod is designed to ensure that when the horizontal operation main shaft is in a closing state, the other end of the oscillating bar is in a state of not limiting a bent plate; and conversely, when the horizontal operation main shaft is in the opening state, the other end of the swing rod is in the state of limiting the bent plate.

A large bearing sleeve 3 is fixed on the main shaft hole to support the horizontal operation main shaft, and a small bearing sleeve is fixed on the closing tripping shaft hole to support the closing tripping shaft. The disc-shaped crank arm of the horizontal operation main shaft is a disc-shaped crank arm: the middle of the disc is provided with a shaft hole which is fixed on the horizontal operation main shaft, and the edge of the disc is provided with a radial bulge to form a disc-shaped crank arm. The structure of the fixed bent plate 7 of the closing tripping shaft is as follows: and the bent plate is fixed on the section with one end milled flat by adopting a screw fastening mode. The bent plate extends along two radial ends of the closing tripping shaft 6, the upper part is a triggering part of the closing button, and the lower part is a rotation limiting part of the closing tripping shaft, so that the rotation angle of the closing tripping shaft 6 is within 15 degrees. The swing rod structure is as follows: one end of the swing rod is a square shaft, the other end of the swing rod is in a round shaft form, a notch is milled at the middle of the end part of the square shaft end, corresponding holes are formed in the left surface and the right surface of the notch, and the swing rod can swing up and down through the hinge joint of a horizontal hinge pin and the right end of the ejector rod.

One end face of the ejector rod 9 is welded with the center of the button 8, the other end of the ejector rod passes through the reset spring 10 and then passes through the guide shaft sleeve on the support 11, after the closing button 16 is manually pre-pressed, the clamp spring is clamped into the clamp spring groove on the ejector rod 9, and the button 8 realizes reciprocating horizontal movement in a manual finger pressing mode.

Therefore, the mechanical reclosing prevention interlocking device of the circuit breaker in the embodiment is simple in structure, low in manufacturing cost, convenient to install and maintain and reliable in operation.

The mechanical reclosing prevention interlocking device of the circuit breaker in the embodiment comprises the following two switching stages:

as shown in fig. 3, when the current horizontal operation spindle is stationary, i.e. in a closing state, the swing rod 13 is in an obliquely upward position, and the closing button 16 is pressed, i.e. in a closing operation, the swing rod 13 rotates counterclockwise around the hole center line at the tail end of the ejector rod 9, and cannot contact the bent plate 7 on the closing tripping shaft 6, and no matter how the operation is, secondary closing cannot be triggered.

As shown in fig. 4, when the current horizontal operation spindle is stationary at this position, i.e. in an opening state, the swing link 13 is in the same horizontal line position as the ejector rod 9, and the closing operation is performed by pressing the closing button 16, the angle of rotation of the swing link 13 around the hole center line at the tail end of the ejector rod 9 is small, and the swing link is directly in the trigger area of the bent plate 7, so as to push the bent plate 7, the closing trip shaft 6 moves clockwise, and the mechanism performs the closing operation.

Claims (6)

1. The utility model provides a circuit breaker prevent mechanical reclosing interlock, characterized by includes:

a vertical fixing plate (1) is provided with a spindle hole and a closing tripping shaft hole, a horizontal operation spindle (4) of the circuit breaker can vertically penetrate through the spindle hole in a rotatable manner, and a disc-shaped crank arm (5) is fixed on the horizontal operation spindle;

a closing button assembly (16) fixed to the upper left of the spindle hole of the fixing plate, which is: a horizontal ejector rod (9) is slidably supported on an ejector rod support (11) and two ends of the horizontal ejector rod extend out, the left end of the ejector rod is a closing button (8), the right end of the ejector rod is horizontally hinged with one end of a swing rod (13), and a reset spring (10) is sleeved on the ejector rod between the closing button and the left end of the ejector rod support to enable the ejector rod to be reset leftwards all the time;

the closing tripping shaft (6) can vertically penetrate through a closing tripping shaft hole positioned on the right upper part of the main shaft hole of the fixed plate in a rotatable manner, and a bent plate (7) extending out in the radial direction is fixed on the closing tripping shaft; the bent plate is arranged so that the other end of the oscillating bar can limit the anticlockwise swing of the bent plate when the ejector rod and the oscillating bar of the closing button assembly are in a straight line and move rightwards, and the other end of the oscillating bar does not limit the anticlockwise swing of the bent plate when the oscillating bar of the closing button assembly inclines upwards relative to the ejector rod and moves rightwards;

the switching-on tripping shaft (6) is connected with the switching-on mechanism, and when the switching-on tripping shaft rotates clockwise, switching-on is triggered, otherwise, switching-on cannot be carried out;

the two ends of the connecting rod (12) are respectively and horizontally hinged on the free end of the disc-shaped crank arm of the main shaft and the swing rod, and the length of the connecting rod is designed to ensure that when the main shaft is in a closing state, the other end of the swing rod is in a state of not limiting a bent plate; and conversely, when the main shaft is in the opening state, the other end of the swing rod is in the state of limiting the bent plate.

2. The mechanical reclosure prevention interlock of a circuit breaker of claim 1 further comprising: a large bearing sleeve (3) is fixed on the main shaft hole to support the horizontal operation main shaft, and a small bearing sleeve (2) is fixed on the closing tripping shaft hole to support the closing tripping shaft.

3. The mechanical reclosure prevention interlock of a circuit breaker of claim 1 further comprising: the disc-shaped crank arm of the horizontal operation main shaft is a disc-shaped crank arm: the middle of the disc is provided with a shaft hole which is fixed on the horizontal operation main shaft, and the edge of the disc is provided with a radial bulge to form a disc-shaped crank arm.

4. The mechanical reclosure prevention interlock of a circuit breaker of claim 1 further comprising: the structure of the fixed bent plate (7) of the closing tripping shaft is as follows: and the bent plate is fixed on the section with one end milled flat by adopting a screw fastening mode.

5. The mechanical reclosure prevention interlock of a circuit breaker of claim 1 further comprising: the bent plate extends along two radial ends of the closing tripping shaft (6), the upper part of the bent plate is a trigger part of the closing button, and the lower part of the bent plate is a rotation limiting part of the closing tripping shaft.

6. The mechanical reclosure prevention interlock of a circuit breaker of claim 1 further comprising: the swing rod structure is as follows: one end of the swing rod is a square shaft, the other end of the swing rod is in a round shaft form, a notch is milled at the middle of the end part of the square shaft end, corresponding holes are formed in the left surface and the right surface of the notch, and the swing rod can swing up and down through the hinge joint of a horizontal hinge pin and the right end of the ejector rod.

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