CN213070984U

CN213070984U - Misoperation-preventing interlocking device for switch cabinet

Info

Publication number: CN213070984U
Application number: CN202022219779.XU
Authority: CN
Inventors: 徐平
Original assignee: Conso Electrical Science & Technology Co ltd
Current assignee: Conso Electrical Science & Technology Co ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-04-27
Anticipated expiration: 2030-09-30

Abstract

The utility model discloses a switch cabinet misoperation prevention interlocking device, which comprises a cabinet back door, a grounding interlocking rod and a limiting structure, wherein the cabinet back door is provided with a lock hole, the grounding interlocking rod is provided with an interlocking hook which is in locking fit with the lock hole, the limiting mechanism comprises a limiting stop block which is rotatably arranged on a cabinet body, a driving ejector rod movably arranged on the back of the cabinet body, and a limit bulge which is arranged on the grounding interlocking rod and forms limit fit with the limit stop, when the cabinet back door is opened, the limit matching formed by the limit stop block and the limit bulge is used for limiting the rotation of the grounding interlocking rod, the limit matching can be released only when the cabinet back door is closed, therefore, the operating requirement of five-prevention interlocking of the switch cabinet is met, misoperation of the grounding switch when the cabinet back door is opened by an operator can be avoided, misoperation risks are reduced, the use is safe and reliable, and the use performance of the product is improved.

Description

Misoperation-preventing interlocking device for switch cabinet

Technical Field

The utility model relates to a supply and distribution technical field, concretely relates to cubical switchboard prevents maloperation interlock.

Background

The switch cabinet equipment is important control equipment for switching on and off a loop, removing and isolating faults, comprises an inflatable cabinet, a ring main unit, an environment-friendly gas cabinet and the like, and is widely applied to a substation, a power plant and other power supply and distribution systems. The switch cabinet is internally provided with a circuit breaker, an isolating switch, a load switch, a grounding switch and the like. In order to ensure the safe operation of the power grid, ensure equipment and personal safety, prevent maloperation, the regulation requires that high tension switchgear satisfies the five-prevention interlocking requirement of safe operation, promptly: the circuit breaker is prevented from being wrongly opened and closed; the isolating switch is prevented from being pulled and closed under the load; prevent the electrified misconnection from switching on the earthing switch; preventing the circuit breaker from being closed with a grounding wire (switch); prevent the mistaken entering of the charged gap.

The existing switch cabinet equipment comprises an isolating switch part and a grounding switch part, wherein the isolating switch part and the grounding switch part are switched on and off by the same operating mechanism, and the switch-on and switch-off of the switch cabinet equipment are prevented according to the interlocking requirements of the isolating switch part and the grounding switch part, namely, the grounding switch can be switched on only when the isolating switch is in a switch-off position, and the switch-on of the isolating switch is prevented when the grounding switch is in a switch-on state.

According to five-prevention interlocking requirements, the existing switch cabinet requires that the cabinet back door can be closed and then the grounding switch is closed, the grounding switch locks the cabinet door through the interlocking mechanism, the cabinet back door is prevented from being opened when the grounding switch is closed, so that the five-prevention interlocking requirements are met, but the existing switch cabinet interlocking mechanism still has the following problems: the staff still can operate earthing switch divide-shut brake under cabinet back door open mode, has the leak of maloperation, and security and reliability are relatively poor, lead to the emergence of incident easily.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the cabinet back door of cubical switchboard among the prior art and still can operating earthing switch when opening, has the maloperation leak, the relatively poor problem of security and reliability to the provision satisfies five and prevents interlocking requirements, prevents to prevent to open maloperation earthing switch under the condition at the cabinet back door, uses safe and reliable's cubical switchboard to prevent maloperation interlock.

In order to solve the technical problem, the utility model provides a cubical switchboard is prevented mistake and is operated interlock, include:

the cabinet body comprises a cabinet rear door which can be opened or closed and is arranged on the back surface of the cabinet body;

the interlocking mechanism comprises a grounding interlocking rod which is rotatably arranged in the cabinet body and a lock hole which is arranged on the rear door of the cabinet, and an interlocking hook which extends out of the back surface of the cabinet body and is in locking fit with the lock hole is arranged on the grounding interlocking rod;

the limiting mechanism comprises a limiting stop block which is rotatably arranged on the cabinet body, a driving ejector rod which is movably arranged on the back surface of the cabinet body and is connected with the limiting stop block, and a limiting bulge which faces the limiting stop block and is arranged on the grounding interlocking rod; the limit stop and the limit bulge form limit fit for limiting the rotation of the grounding interlocking rod when the cabinet back door is opened, and the drive ejector rod is pushed to drive the limit stop to be rotationally separated from the limit bulge when the cabinet back door is closed, so that the limit stop and the limit bulge are relieved from limit fit.

As a preferable scheme, the limit stop is rotatably disposed above the grounding interlocking rod and comprises a limit groove with an opening facing the top end of the limit protrusion, the limit protrusion penetrates and abuts in the limit groove, and the limit stop forms limit fit with the limit protrusion through the limit groove.

As a preferred scheme, the limiting protrusion is a limiting rod which is arranged on the grounding interlocking rod in a linkage manner.

As a preferred scheme, one side of the limit stop facing the driving ejector rod is provided with a connecting port communicated with the limit groove, and an inclined boss matched with the driving ejector rod is arranged in the limit groove.

As a preferred scheme, one end of the driving ejector rod penetrates out of the back face of the cabinet body and is arranged opposite to the cabinet back door, and the other end of the driving ejector rod is in sliding abutting connection with the inclined plane boss.

As a preferred scheme, two through holes suitable for the driving ejector rod and the interlocking hook to extend out are formed in the back of the cabinet body.

As a preferred scheme, a reset spring is arranged between the driving ejector rod and the back of the cabinet body, and the reset spring drives the driving ejector rod to extend out of the through hole when the rear cabinet door is opened.

As a preferred scheme, the interlocking hook is of a T-shaped structure, the lock hole is of a waist-shaped hole structure suitable for the interlocking hook to be inserted into, and a square lock plate is arranged at the top of the interlocking hook.

Compared with the prior art, the technical scheme of the utility model have the following advantage:

1. the utility model provides a cubical switchboard anti-misoperation interlock, when the cabinet back door is opened, limit cooperation formed through limit stop and spacing arch is used for restricting the rotation of grounding interlocking rod, thus can prevent to carry out maloperation to grounding switch under the condition that the cabinet back door is opened, therefore, only when the cabinet back door is closed, push away the driving ejector pin that sets up at the cabinet body back through the cabinet back door, make limit stop rotate towards the side far away from the spacing arch under the drive of driving ejector pin, thereby remove the limit cooperation to grounding interlocking rod, at this moment, safe and reliable's operation grounding switch can be realized, and lock in the lockhole of the cabinet back door through the interlocking hook, finally realize the locking action of the cabinet back door, adopt this technical scheme, not only satisfied the operating requirement of cubical switchboard five-prevention interlocking, but also can avoid operating personnel to operate grounding switch by mistake when the cabinet back door is opened, ensure to carry out next step operation after the cabinet back door is closed, the misoperation risk is reduced, the use is safe and reliable, and the use performance of the product is improved.

2. The utility model provides a cubical switchboard is prevented mistake operation interlock works as spacing arch is worn and is stretched the butt and be in among limit stop's the spacing recess, through limit recess encircleed spacing bellied top to the restriction spacing arch rotates along with the ground connection interlocking lever, promptly when ground connection interlocking lever atress has the rotation trend, because spacing arch receives the spacing blocking effect of spacing recess both sides lateral wall has just also restricted the ground connection interlocking lever takes place to rotate, and then concludes the cabinet door should be in the state of opening to effectively reduce the risk of maloperation, use the security is good.

3. The utility model provides a cubical switchboard is prevented maloperation interlock works as the cabinet back door extrusion during the one end of drive ejector pin, can make the other end slip butt of drive ejector pin is in on the inclined plane boss, will the motion and the power transmission of drive ejector pin convert into limit stop's rotary motion, thereby drive limit stop rotates towards keeping away from limit bulge one side, and removes limit cooperation between limit stop and the limit bulge realizes the normal divide-shut brake rotation of ground connection interlocking lever.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below.

Fig. 1 is a schematic structural view of the misoperation prevention interlocking device of the switch cabinet when the rear door of the cabinet is closed;

fig. 2 is a schematic structural view of the interlocking device for preventing misoperation of the switch cabinet when the rear door of the cabinet is opened;

FIG. 3 is a schematic view of the installation structure of the back door and the interlocking hook of the cabinet of the present invention;

description of reference numerals: 1-cabinet back door, 11-lock hole, 2-grounding interlocking rod, 21-interlocking hook, 3-limit stop block, 4-driving ejector rod, 5-limit bulge, 6-cabinet body and 7-reset spring.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Example 1

The embodiment provides a cubical switchboard anti-misoperation interlocking device as shown in fig. 1-3, including:

the cabinet back door 1 is arranged on the back of the cabinet body 6 and can be opened or closed;

the interlocking mechanism comprises a grounding interlocking rod 2 which is rotatably arranged in the cabinet body and a lock hole 11 which is arranged on the rear door of the cabinet, wherein an interlocking hook 21 which extends out of the back surface of the cabinet body and is in locking fit with the lock hole 11 is arranged on the grounding interlocking rod 2;

the limiting mechanism comprises a limiting stop 3 which is rotatably arranged on the cabinet body, a driving ejector rod 4 which is movably arranged on the back surface of the cabinet body 6 and is connected with the limiting stop 3, and a limiting bulge 5 which faces the limiting stop 3 and is arranged on the grounding interlocking rod 2; the limit stop 3 forms limit fit for limiting the rotation of the grounding interlocking rod 2 with the limit protrusion 5 when the cabinet back door 1 is opened, and the cabinet back door 1 pushes the driving ejector rod 4 to drive the limit stop 3 to be rotationally separated from the limit protrusion 5 when closed, so that the limit stop 3 and the limit protrusion 5 are relieved from limit fit.

The above embodiment is a core technical solution of this embodiment, when the cabinet back door 1 is opened, the limit cooperation formed by the limit stop 3 and the limit protrusion 5 is used to limit the rotation of the grounding interlocking rod 2, so as to prevent the misoperation of the grounding switch when the cabinet back door 1 is opened, therefore, only when the cabinet back door 1 is closed, the driving ejector rod 4 arranged on the back of the cabinet body is pushed by the cabinet back door 1, so that the limit stop 3 is driven by the driving ejector rod to rotate towards the side far away from the limit protrusion 5, thereby removing the limit cooperation of the grounding interlocking rod 2, and at this time, the grounding switch can be safely and reliably operated, and locked in the lock hole of the cabinet back door 1 by the interlock hook 21, and finally realizing the locking function of the cabinet back door 1, and by adopting the technical solution, the operation requirement of the five-prevention interlock of the switch cabinet is satisfied, and the misoperation of the grounding switch when the cabinet back door is opened by an operator can be avoided, the next operation can be carried out after the cabinet back door is closed, the misoperation risk is reduced, the use is safe and reliable, and the use performance of the product is improved.

The specific arrangement of the limit stops will be described in detail below with reference to fig. 1-2:

the limit stop 3 is rotatably arranged above the grounding interlocking rod 2 and comprises a limit groove (the limit groove is not shown in the drawing) with an opening facing the top end of the limit protrusion 5, namely, the limit groove is formed inside the limit stop 3 and is arranged opposite to the limit protrusion up and down, the limit protrusion 5 penetrates and abuts in the limit groove, and the limit stop 3 forms limit fit with the limit protrusion 5 through the limit groove, wherein the limit protrusion 5 is a limit rod which is arranged on the grounding interlocking rod 2 in a linkage manner, the structure is arranged, the limit stop 3 is rotatably arranged on the rotation path of the limit protrusion 5 and surrounds the top end of the limit protrusion 5 through the limit groove, so that the limit protrusion 5 is limited to rotate along with the grounding interlocking rod 2, namely, when the grounding interlocking rod 2 generates a rotation trend under the stress, because the limiting protrusions 5 are limited by the side walls on two sides of the limiting groove, the grounding interlocking rods 2 are limited to rotate, and further the cabinet back door 1 is deduced to be in an opening state, so that a reminding effect is achieved, the risk of misoperation is effectively reduced, and the use safety is good.

In this embodiment, a connecting port communicating with the limiting groove is arranged on one side of the limiting stopper 3 facing the driving ejector rod 4, so that the driving ejector rod 4 extends into the limiting groove through the connecting port, the limiting groove is opened, an inclined boss matched with the driving ejector rod 4 is arranged in the limiting groove, the limiting groove is further arranged, one end of the driving ejector rod 4 penetrates out of the back surface of the cabinet body and is arranged opposite to the cabinet back door 1, the other end of the driving ejector rod 4 is in sliding butt joint with the inclined boss, through the above structural arrangement, when the cabinet back door 1 extrudes one end of the driving ejector rod 4, the other end of the driving ejector rod 4 is in sliding butt joint with the inclined boss, so that the motion and force transmission of the driving ejector rod 4 are converted into the rotary motion of the limiting stopper 3 to drive the limiting stopper 3 to rotate towards the side far away from the limiting protrusion 5, the limiting protrusion 5 is not covered by the limiting groove, so that the limiting matching between the limiting stop and the limiting protrusion is removed, and the normal rotation operation of the grounding interlocking rod can be realized.

In order to ensure that the driving ejector rod 4 and the interlocking hook 21 can form reliable interlocking matching with the cabinet back door 1, the back surface of the cabinet body is provided with two through holes suitable for the driving ejector rod 4 and the interlocking hook 21 to penetrate out, referring to fig. 2-3, the interlocking hook 21 is of a T-shaped structure, the lock hole 11 is of a kidney-shaped hole structure suitable for the interlocking hook 21 to insert, the top of the interlocking hook 21 is provided with a square lock plate, the length of the square lock plate is greater than the width of the lock hole, the structure is arranged, when the cabinet back door is closed on the back surface of the cabinet body, the interlocking hook 21 correspondingly penetrates into the lock hole, the interlocking hook 21 is driven by the grounding rod 2 to rotate for a certain angle, so that the square lock plate and the lock hole 11 are in crossed arrangement, the interlocking hook 21 is blocked from exiting from the lock hole 11, and the installation and locking of the cabinet back door 1 on the, the requirement of five-prevention interlocking is met.

As shown in fig. 1, the drive ejector rod 4 with be provided with reset spring 7 between the 6 backs of the cabinet body when cabinet back door 1 is opened, reset spring 7 drives drive ejector rod 4 stretches out the through-hole to realize the automatic re-setting function of drive ejector rod, at this in-process, because drive ejector rod 4 moves dorsad limit stop's direction, at this moment limit stop towards being close to under self action of gravity limit stop one side rotates, covers limit protrusion so that limit stop 3 and limit protrusion 5 form spacing cooperation once more through limit groove, in order to restrict ground connection interlocking rod 2 takes place to rotate under the maloperation condition, operates safe and reliable.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. The utility model provides a cubical switchboard maloperation interlock prevents which characterized in that includes:

the cabinet back door (1) is arranged on the back of the cabinet body (6) in an openable or closable manner;

the interlocking mechanism comprises a grounding interlocking rod (2) which is rotatably arranged in the cabinet body and a lock hole (11) which is arranged on the rear door of the cabinet, wherein an interlocking hook (21) which extends out of the back surface of the cabinet body and is in locking fit with the lock hole (11) is arranged on the grounding interlocking rod (2);

the limiting mechanism comprises a limiting stop block (3) which is rotatably arranged on the cabinet body, a driving ejector rod (4) which is movably arranged on the back surface of the cabinet body (6) and is connected with the limiting stop block (3), and a limiting bulge (5) which faces the limiting stop block (3) and is arranged on the grounding interlocking rod (2); the limiting stopper (3) is in the limiting fit of the grounding interlocking rod (2) when the cabinet back door (1) is opened and the limiting protrusion (5) is limited, and the cabinet back door (1) is closed and pushes the driving ejector rod (4) to drive the limiting stopper (3) and the limiting protrusion (5) to rotate and separate, so that the limiting stopper (3) and the limiting protrusion (5) are free from the limiting fit.

2. The cubical switchboard anti-misoperation interlock of claim 1 characterized in that: the limiting stopper (3) is rotatably arranged above the grounding interlocking rod (2) and comprises a limiting groove with an opening facing the top end of the limiting protrusion (5), the limiting protrusion (5) penetrates and abuts in the limiting groove, and the limiting stopper (3) is in limiting fit with the limiting protrusion (5) through the limiting groove.

3. The cubical switchboard anti-misoperation interlock of claim 2 characterized in that: the limiting protrusion (5) is a limiting rod which is arranged on the grounding interlocking rod (2) in a linkage mode.

4. The cubical switchboard anti-misoperation interlock of claim 3 characterized in that: and one side of the limit stop block (3) facing the driving ejector rod (4) is provided with a connector communicated with the limit groove, and the limit groove is internally provided with an inclined boss matched with the driving ejector rod (4).

5. The cubical switchboard anti-misoperation interlock of claim 4, characterized in that: one end of the driving ejector rod (4) penetrates out of the back face of the cabinet body and is opposite to the cabinet back door (1), and the other end of the driving ejector rod is in sliding butt joint with the inclined plane boss.

6. The cubical switchboard anti-misoperation interlock device of any one of claims 1-5, characterized in that: the back of the cabinet body is provided with two through holes suitable for the driving ejector rod (4) and the interlocking hook (21) to extend out.

7. The cubical switchboard anti-misoperation interlock of claim 6, characterized in that: the cabinet is characterized in that a reset spring (7) is arranged between the driving ejector rod (4) and the back face of the cabinet body (6), and the reset spring (7) drives the driving ejector rod (4) to extend out of the through hole when the cabinet back door (1) is opened.

8. The cubical switchboard anti-misoperation interlock of claim 7, characterized in that: interlocking couple (21) are T type structure, lockhole (11) are for being fit for interlocking couple (21) male waist shape pore structure, the top of interlocking couple (21) is equipped with square jam plate.