CN110752105B

CN110752105B - Jack box circuit breaker closes separating brake interlock with unblock function

Info

Publication number: CN110752105B
Application number: CN201911038905.7A
Authority: CN
Inventors: 王署斌
Original assignee: Wetown Electric Group Co Ltd
Current assignee: Wetown Electric Group Co Ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2021-07-20
Anticipated expiration: 2039-10-29
Also published as: CN110752105A

Abstract

The invention discloses a jack box breaker switching-on and switching-off interlocking device with an unlocking function, which comprises: the jack box body is provided with a box body back plate facing the bus duct and a door cover opposite to the box body back plate, and a circuit breaker is arranged in the jack box body; the lock tongue is arranged on one side of the door cover facing the circuit breaker, a limit groove is formed between the door cover and the lock tongue, and the lock tongue is linked with the circuit breaker switch and can horizontally move along with the shifting of the circuit breaker switch so as to be selectively inserted into the limit groove; and the lock tongue operating mechanism is in transmission connection with the lock tongue and can control the lock tongue to rotate. The door cover is buckled by a user when the breaker is in an off state, and then the breaker is switched on through the operation window on the door cover. If the user finds that the door cover can not be closed smoothly, the user needs to check whether the breaker is closed in advance. The problem that the door cover cannot be opened when the breaker switch is in the switching-on position and cannot be switched to the switching-off position under the condition that the breaker breaks down is avoided.

Description

Jack box circuit breaker closes separating brake interlock with unblock function

Technical Field

The invention relates to the field of electric power, in particular to a switching-on and switching-off interlocking device of a plug box circuit breaker with an unlocking function.

Background

The jack box is used as a functional unit of a power transmission bus duct and plays a role in electric energy distribution in a bus duct system. Along with the increasing requirements of bus duct products on performance and reliability, the requirements of the jack box on safety, reliability and simplicity and convenience in operation are also increasing.

The condition that the circuit breaker is switched on without closing the door cover often can take place in current jack box in the use, and this condition can bring very big potential safety hazard.

Disclosure of Invention

One object of an embodiment of the present invention is to: the utility model provides a jack box circuit breaker closes separating brake interlock with unblock function which can solve the above-mentioned technical problem that exists among the prior art.

Another object of an embodiment of the present invention is to: the arrangement of the bolt operating mechanism can open the door cover by the operation of a specially-assigned person under the condition of equipment failure.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a jack box circuit breaker closes separating brake interlock with unblock function which characterized in that includes:

the jack box body is provided with a box body back plate facing the bus duct and a door cover opposite to the box body back plate, and a circuit breaker is arranged in the jack box body;

a lock tongue arranged on one side of the door cover facing the circuit breaker and forming a limit groove with the door cover,

the locking plate is linked with the breaker switch and can horizontally move along with the shifting of the breaker switch so as to be selectively inserted into the limiting groove;

and the spring bolt operating mechanism is positioned on one side of the circuit breaker, far away from the door cover, is in transmission connection with the spring bolt and can control the spring bolt to rotate.

As an optimal technical scheme of the jack box circuit breaker opening and closing interlocking device with the unlocking function, the lock tongue operating mechanism further comprises an automatic resetting device for driving the lock tongue to return to a direction parallel to the moving direction of the lock plate.

As an optimal technical scheme of the jack box circuit breaker switching-on/off interlocking device with the unlocking function, the automatic resetting device is a resetting tension spring, one end of the resetting tension spring is fixedly connected with the lock tongue, and the other end of the resetting tension spring is fixedly connected with the door cover.

As an optimal technical scheme of the jack box circuit breaker switching-on/off interlocking device with the unlocking function, a tension spring mounting rod extends towards the inside of the jack box body on the door cover, and the reset tension spring is fixedly connected with the door cover through the tension spring mounting rod.

As an optimal technical scheme of the jack box circuit breaker switching on and switching off interlocking device with the unlocking function, the automatic resetting device is a torsion spring, and the torsion spring is sleeved on the spring bolt operating mechanism.

As an optimal technical scheme of the jack box circuit breaker switching on and switching off interlocking device with the unlocking function, the spring bolt comprises a spring bolt connecting portion and a spring bolt limiting portion, the spring bolt connecting portion is connected with the door cover, and the spring bolt limiting portion faces towards the end portion of the lock plate and is provided with a chamfer.

As a preferable technical scheme of the interlocking device for switching on and off of the plug box circuit breaker with the unlocking function, guide rails are symmetrically arranged on the side wall of the box body of the plug box, and two ends of the locking plate are respectively located in the guide rails and can slide in the guide rails.

As a preferable technical scheme of the jack box circuit breaker switching-on/off interlocking device with the unlocking function, the guide rail comprises a first limiting part and a second limiting part, a rail groove is formed between the first limiting part and the second limiting part, and the locking plate is arranged in the rail groove.

As a preferable technical scheme of the jack box circuit breaker switching-on and switching-off interlocking device with the unlocking function, an interlocking hole is formed in the middle of the locking plate, and the circuit breaker switch is arranged in the interlocking hole in a penetrating mode.

As a preferable technical scheme of the jack box circuit breaker opening and closing interlocking device with the unlocking function, a circuit breaker operation window for operating the circuit breaker switch is arranged on the door cover.

The invention has the beneficial effects that: the door cover is buckled by a user when the breaker is in an off state, and then the breaker is switched on through the operation window on the door cover. If the user finds that the door cover can not be closed smoothly, the user needs to check whether the breaker is closed in advance or not, and therefore potential safety hazards caused by live-line operation are avoided. Meanwhile, the problem that the door cover cannot be opened when the breaker is in a fault condition and the breaker switch is in a switch-on position and cannot be shifted to a switch-off position is solved.

Drawings

The invention is explained in more detail below with reference to the figures and examples.

Fig. 1 is a schematic view of an open-cover assembly state of an interlocking device for closing and opening a plug box circuit breaker with an unlocking function according to an embodiment of the invention.

Fig. 2 is an enlarged view of fig. 1 at I.

Fig. 3 is a schematic perspective view of an internal structure of a jack box body in a switching-off state according to an embodiment of the invention.

Fig. 4 is a schematic diagram of an internal structure of the jack box body in the opening state according to the embodiment of the invention.

Fig. 5 is a schematic view of another view of the internal structure of the jack box body in the opening state according to the embodiment of the invention.

Fig. 6 is an enlarged view of fig. 5 at II.

Fig. 7 is a schematic perspective view of an internal structure of a jack box body in a closing state according to an embodiment of the present invention.

Fig. 8 is a schematic diagram of an internal structure of a jack box body in a closing state according to an embodiment of the present invention.

Fig. 9 is a schematic perspective view of an assembled state of the locking plate and the guide rail according to the embodiment of the present invention.

Fig. 10 is a schematic structural view of the assembled state of the lock tongue and the adjusting lever according to the embodiment of the invention.

Fig. 11 is a schematic view of a bolt and a return tension spring in an assembled state according to an embodiment of the present invention.

Fig. 12 is a schematic view of a bolt and a return tension spring in an assembled state according to an embodiment of the present invention.

Fig. 13 is a schematic view of a bolt structure according to an embodiment of the present invention.

Fig. 14 is a top view of the latch bolt structure according to the embodiment of the present invention.

Fig. 15 is a schematic view of an adjusting lever according to an embodiment of the present invention.

Fig. 16 is a schematic view of another view angle structure of the adjustment lever according to the embodiment of the invention.

In the figure:

100. a jack box body; 110. a box body back plate; 120. a door cover; 121. a circuit breaker operating window; 200. a circuit breaker; 210. a circuit breaker switch; 300. a latch bolt; 310. a bolt connecting part; 320. a lock tongue limiting part; 330. A limiting groove; 340. chamfering; 400. a locking plate; 410. an interlock hole; 500. a latch operating mechanism; 510. a return tension spring; 520. a tension spring mounting rod; 600. a guide rail; 610. a first limiting part; 620. a second limiting part; 630. a track groove.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 16, the present embodiment provides an opening and closing interlock device of a jack box circuit breaker 200 having an unlocking function, including: a jack box body 100 having a box body back plate 110 facing the bus duct 1 and a door cover 120 disposed opposite to the box body back plate 110, and having a circuit breaker 200 disposed therein; the door cover 120 is provided with a breaker operating window 121 for operating the breaker switch 210.

The circuit breaker further comprises a closing interlocking component for interlocking the operation of the circuit breaker 200 when the circuit breaker is closed, and the closing interlocking component can block the closing of the door cover 120 when the circuit breaker 200 is closed before the door cover 120 is closed.

The switching-on interlocking assembly comprises:

the latch 300 is arranged on one side of the door cover 120 facing the circuit breaker 200, and a limit groove 330 is formed between the latch 300 and the door cover 120;

the locking plate 400 is linked with the breaker switch 210 and can horizontally move along with the shifting of the breaker switch 210 so as to be selectively inserted into the limiting groove 330;

since the latch tongue 300 is disposed on the door cover 120, if the circuit breaker 200 is switched on under the condition that the door cover 120 is not buckled, the latch tongue 300 will be blocked by the latch tongue 400, and at this time, the door cover 120 cannot be normally closed, so that the correct operation mode is: the user first buckles the door cover 120 when the circuit breaker 200 is in an off state, and then performs a closing operation on the circuit breaker 200 through an operation window on the door cover 120. If the user finds that the door 120 is not closed smoothly, the user needs to check whether the circuit breaker 200 is closed in advance.

In this embodiment, the locking bolt 300 includes a locking bolt connecting portion 310 and a locking bolt limiting portion 320, the locking bolt connecting portion 310 is connected to the door cover 120, and the locking bolt limiting portion 320 faces the end of the locking plate 400 and is provided with a chamfer 340.

The latch tongue 300 may be detachably mounted on the door cover 120 through the latch tongue connecting part 310 or fixedly mounted on the door cover 120 through the latch tongue connecting part 310.

In this embodiment, in order to avoid the problem that the breaker switch 210 is in the on position and cannot be shifted to the off position and the door cover 120 cannot be opened under the condition that the breaker 200 has a fault, as an optimal technical solution, the switching-on interlocking assembly further includes a latch operating mechanism 500, and the latch operating mechanism 500 is located on one side of the door cover 120 away from the breaker 200 and is in transmission connection with the latch 300, so as to control the latch 300 to rotate.

The bolt 300 can be controlled to rotate by the bolt operating mechanism 500, so that the bolt 300 and the lock plate 400 are no longer clamped relatively, and the door cover 120 can be opened freely.

The latch bolt operating mechanism 500 further includes an automatic reset means for driving the latch bolt 300 to be restored to be parallel to the moving direction of the lock plate 400.

The automatic reset device is arranged to reset the bolt 300, so that the problem that the user forgets to reset the bolt 300 after rotating the bolt 300 through the bolt operating mechanism 500 to cause the interlocking function to fail can be avoided.

As a preferred technical solution, the automatic reset device is a reset tension spring 510, one end of the reset tension spring 510 is fixedly connected with the lock tongue 300, and the other end of the reset tension spring is fixedly connected with the door cover 120.

Specifically, a tension spring mounting rod 520 extends from the door cover 120 to the inside of the jack box body 100, and the return tension spring 510 is fixedly connected with the door cover 120 through the tension spring mounting rod 520.

It should be noted that the automatic reset device is not limited to the reset tension spring 510, and in other embodiments, the automatic reset device may also be a torsion spring, and the torsion spring is sleeved on the latch operating mechanism 500.

Through setting up the spacing portion of first spacing portion 610 and second 620, can avoid the locking plate 400 directly to press on circuit breaker 200, prevent simultaneously that the locking plate 400 from being driven by door closure 120 together with circuit breaker 200 separation, and lead to interlocking inefficacy.

The side wall of the jack box body 100 is symmetrically provided with guide rails 600, and two ends of the locking plate 400 are respectively located in the guide rails 600 and can slide in the guide rails 600.

The guide rail 600 includes a first limiting portion 610 and a second limiting portion 620, a rail groove 630 is formed between the first limiting portion 610 and the second limiting portion 620, and the locking plate 400 is disposed in the rail groove 630.

In order to ensure the synchronous movement of the locking plate 400 and the circuit breaker switch 210, an interlocking hole 410 is provided in the middle of the locking plate 400 in the present embodiment, and the circuit breaker switch 210 is inserted into the interlocking hole 410.

A user firstly buckles the door cover 120 when the circuit breaker 200 is in an off state, then performs switching-on operation on the circuit breaker 200 through an operation window on the door cover 120, at this time, the locking plate 400 can smoothly enter the limiting groove 330 formed between the locking tongue 300 and the door cover 120, and the door cover 120 cannot be normally opened if the circuit breaker 200 is not opened under the condition that the locking tongue 300 is not rotated through the locking tongue operation mechanism 500; when the door cover 120 needs to be opened in a state where the circuit breaker 200 is switched on, the rotation of the latch 300 needs to be controlled by the latch operating mechanism 500, the door cover 120 needs to be opened in a state where the latch 300 is rotated to the state where the latch 400 is separated from the stopper groove 330, and the latch 300 is automatically restored to the initial position by the driving of the automatic reset device when the operation of the latch operating mechanism 500 is released.

Simultaneously, still provide a jack box in this embodiment, its have as above jack box circuit breaker divide-shut brake interlock.

In the description herein, it is to be understood that the terms "upper", "lower", "left", "right", and the like are used in an orientation or positional relationship based on those shown in the drawings, which are for convenience of description and simplicity of operation only, and do not indicate or imply that the structures or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be taken as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims

1. The utility model provides a jack box circuit breaker closes separating brake interlock with unblock function which characterized in that includes:

the jack box body (100) is provided with a box body back plate (110) facing the bus duct and a door cover (120) opposite to the box body back plate (110), and a circuit breaker (200) is arranged in the jack box body (100);

a lock tongue (300) arranged on one side of the door cover (120) facing the circuit breaker (200), and a limit groove (330) is formed between the lock tongue and the door cover (120),

the locking plate (400) is linked with the breaker switch (210) and can horizontally move along with the shifting of the breaker switch (210) so as to be selectively inserted into the limiting groove (330);

and the bolt operating mechanism (500) is positioned on one side of the door cover (120) far away from the circuit breaker (200), is in transmission connection with the bolt (300), and can control the bolt (300) to rotate.

2. The opening and closing interlocking device of a jack box circuit breaker with an unlocking function as claimed in claim 1, wherein the latch operating mechanism (500) further comprises an automatic reset device for driving the latch (300) to return to be parallel to the moving direction of the locking plate (400).

3. The inserting box circuit breaker opening and closing interlocking device with the unlocking function as claimed in claim 2, wherein the automatic resetting device is a resetting tension spring (510), one end of the resetting tension spring (510) is fixedly connected with the bolt (300), and the other end of the resetting tension spring is fixedly connected with the door cover (120).

4. The opening and closing interlocking device of the jack box circuit breaker with the unlocking function as claimed in claim 3, wherein a tension spring mounting rod (520) extends from the door cover (120) to the interior of the jack box body (100), and the reset tension spring (510) is fixedly connected with the door cover (120) through the tension spring mounting rod (520).

5. The jack box circuit breaker opening and closing interlocking device with the unlocking function as claimed in claim 2, wherein the automatic resetting device is a torsion spring, and the torsion spring is sleeved on the bolt operating mechanism (500).

6. The opening and closing interlocking device of the jack box circuit breaker with the unlocking function as claimed in claim 1, wherein the latch (300) comprises a latch connecting portion (310) and a latch limiting portion (320), the latch connecting portion (310) is connected with the door cover (120), and a chamfer (340) is arranged at the end of the latch limiting portion (320) facing the lock plate (400).

7. The locking and unlocking device of a jack box circuit breaker with an unlocking function as claimed in claim 6, wherein the side wall of the jack box body (100) is symmetrically provided with guide rails (600), and two ends of the locking plate (400) are respectively located in the guide rails (600) and can slide in the guide rails (600).

8. The locking and unlocking apparatus of a jack box circuit breaker with an unlocking function according to claim 7, wherein the guide rail (600) comprises a first limiting portion (610) and a second limiting portion (620), a rail groove (630) is formed between the first limiting portion (610) and the second limiting portion (620), and the locking plate (400) is disposed in the rail groove (630).

9. The opening and closing interlocking device of the plug box circuit breaker with the unlocking function as claimed in claim 1, wherein an interlocking hole (410) is formed in the middle of the locking plate (400), and the circuit breaker switch (210) is inserted into the interlocking hole (410).

10. The jack box circuit breaker opening and closing interlocking device with the unlocking function according to claim 9, wherein a circuit breaker operating window (121) for operating the circuit breaker switch (210) is provided on the door cover (120).