CN205828998U - A locking device and switch cabinet for preventing misoperation of grounding trolley - Google Patents

Abstract

The utility model discloses a locking device and cubical switchboard of maloperation are prevented to ground connection dolly. The locking device for preventing misoperation of the grounding trolley comprises a fixed plate and a sliding plate, wherein the fixed plate is arranged on the inner wall of a switch cabinet, the sliding plate is in sliding fit with the fixed plate, a first padlock hole is formed in the fixed plate, a second padlock hole is formed in the sliding plate, and the sliding plate is positioned on the front side of a busbar copper bar of the switch cabinet; when the first padlock hole corresponds to the second padlock hole, the sliding plate is in a locking position, and when the grounding trolley enters the switch cabinet, the sliding plate forms a block relative to a convex block at the upper end of the grounding trolley; when the first padlock hole and the second padlock hole are staggered, the sliding plate is located at an unlocking position, and when the grounding trolley enters the switch cabinet, the sliding plate is avoided relative to the protruding block. The utility model discloses a cubical switchboard, prevent maloperation's blocking device including the ground connection dolly. Above-mentioned earthing trolley prevents locking device of maloperation, avoids earthing trolley to lose the problem of the potential safety hazard that electric five guards brought.

Description

A locking device and switch cabinet for preventing misoperation of grounding trolley

technical field

The utility model relates to the technical field of electrical safety, in particular to a locking device for preventing misoperation of a grounding trolley and a switchgear provided with the locking device for preventing misoperation of a grounding trolley.

Background technique

The main function of switchgear is to switch, control and protect electrical equipment during the process of power generation, transmission, distribution and power conversion in the power system. The components in the switch cabinet are mainly composed of circuit breakers, disconnectors, load switches, operating mechanisms, transformers and various protection devices. There are many classification methods of switchgear, such as circuit breaker installation method can be divided into removable switchgear and fixed switchgear.

With the continuous improvement of the level of distribution network power equipment, the application of removable switchgear in substations and power distribution rooms is becoming more and more popular. In order to strengthen the management of electrical operation and related equipment, and prevent the occurrence of electrical misoperation accidents, the general switchgear must abide by the relevant provisions of the electrical five-prevention management system during the operation process. The five electrical defenses generally include: 1. Preventing the disconnection and closing of the isolating switch with load (that is, the disconnector cannot be operated in the closed state of the circuit breaker, load switch, and contactor); 3. Prevent the circuit breaker and load switch from closing when the grounding switch is in the closed position (that is, only when the grounding switch is in the open state can the isolation switch or Only when the handcart enters the working position can the circuit breaker and load switch be closed); 4. Prevent the grounding switch from being mistakenly closed when the circuit breaker is on (that is, only when the circuit breaker is in the open state can the isolation switch be operated or the handcart can retreat from the working position To the test position, the grounding switch can be closed); 5. Prevent entering the charged room by mistake (that is, only when the compartment is not charged, the door can be opened to enter the compartment).

Generally speaking, when the busbar in the removable switchgear is overhauled, the busbar is in a fully enclosed state, and the grounding copper bar cannot be drawn out from the busbar as a temporary grounding wire, but only a grounding trolley can be used for grounding. However, the traditional grounding trolley is generally not equipped with a device to prevent misuse of the grounding trolley. During actual operation, there may be a risk of losing the five electrical defenses, which poses a very large safety hazard.

To sum up, how to avoid the potential safety hazard of losing the five defenses of the grounding trolley has become a technical problem to be solved urgently by those skilled in the art.

Utility model content

The purpose of the utility model is to provide a locking device for preventing misoperation of the grounding trolley, so as to avoid the potential safety hazard caused by the loss of the five defenses of the grounding trolley. Another object of the present utility model is to provide a switchgear with the above-mentioned locking device for preventing misoperation of the grounding trolley.

In order to achieve the above purpose, the utility model provides a locking device for preventing misoperation of the grounding trolley, which includes a fixed plate arranged on the inner wall of the switch cabinet and a sliding plate slidingly matched with the fixed plate, and the fixed plate is provided with a second A padlock hole, the sliding plate is provided with a second padlock hole, and the sliding plate is located on the front side of the busbar copper bar of the switch cabinet; when the first padlock hole corresponds to the second padlock hole, the The sliding plate is in the locked position, and when the grounding trolley enters the switch cabinet, the sliding plate forms a block against the bump on the upper end of the grounding trolley; when the first padlock hole and the second padlock hole are staggered, the sliding The plate is in the unlocked position, and when the grounding trolley enters the switch cabinet, the sliding plate avoids the projection.

Preferably, the fixed plate includes a first bent plate and a second bent plate, the first bent plate is fixedly connected to the upper wall of the switch cabinet; the second bent plate is slidably fitted with the sliding plate, and the The second padlock hole is arranged on the second bent plate.

Preferably, fixing holes are provided on the first bent plate, and the fixing holes fix the fixing plate on the upper wall of the switch cabinet through bolts.

Preferably, a guide member is provided on the second bent plate, a chute is provided on the sliding plate, and the chute is hooked on the guide member, and the chute slides along the guide member When reaching one end, the first padlock hole (3) corresponds to the second padlock hole (4); when the chute slides to the other end along the guide member, the first padlock hole (3) corresponds to the second padlock hole (4). The second padlock holes (4) are staggered.

Preferably, the guide member includes a first guide rod and a second guide rod, a first installation hole and a second installation hole are provided on the second bent plate, and one end of the first guide rod is installed on the In the first installation hole, the other end extends into the chute. One end of the second guide rod is installed in the second installation hole, and the other end extends into the chute.

Preferably, the sliding plate includes a horizontal plate and a stop plate connected to one end of the horizontal plate and protruding downward relative to the horizontal plate, the slide groove and the second padlock hole are located on the horizontal plate, the When the sliding plate is in the locked position, the stopper plate forms a block against the protrusion; when the sliding plate is in the unlocked position, the stopper plate forms an avoidance relative to the protrusion.

Preferably, the horizontal plate is provided with a locking sliding direction indicator and an unlocking sliding direction indicator.

It should be noted that, generally, the upper end of the grounding trolley has a protruding bump, but the upper end of the isolation trolley does not. Compared with the content introduced in the background technology, in the above technical solution, the utility model provides a locking device for preventing misoperation of the grounding trolley. When the switch cabinet is in normal operation, the sliding plate is in the locking position, and through the five anti- The lock is locked. At this time, when the grounding trolley enters the switch cabinet, the sliding plate forms a block against the bump on the upper end of the grounding trolley, thus avoiding the misoperation of the grounding trolley when the grounding trolley fails to pass the five defenses, and isolating The only difference in shape between the trolley and the grounding trolley is that the isolation trolley does not have the above-mentioned bumps, so the isolation trolley can be pushed into the operating position of the switch cabinet; When it reaches the unlocked position, the sliding plate avoids the protrusion, so that the grounding trolley can be pushed into the switch cabinet for grounding operation. The above-mentioned locking device for preventing misoperation of the grounding trolley can effectively avoid the potential safety hazard of the grounding trolley losing the electrical five defenses. Further beneficial effects are that the grounding trolley is included in the unified management of the five defenses by the microcomputer, the structure is simple, and the maintenance operation of the busbar Safety.

The utility model also provides a switchgear, including a locking device for preventing misoperation of the grounding trolley, the locking device for preventing misoperation of the grounding trolley is the locking device for preventing misoperation of the grounding trolley described in any of the above schemes. Since the blocking device for preventing misoperation of the grounding trolley has the above-mentioned technical effects, the switchgear with the blocking device for preventing misoperation of the grounding trolley should also have corresponding technical effects.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description It is only an embodiment of the utility model, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is a structural schematic diagram of the locking device for preventing misoperation of the grounding trolley provided by the embodiment of the present invention;

Fig. 2 is a schematic diagram of the exploded structure of the locking device for preventing misoperation of the grounding trolley provided by the embodiment of the present invention.

In Figure 1-2 above:

Fixed plate 1, sliding plate 2, first padlock hole 3, second padlock hole 4, first bent plate 5, second bent plate 6, fixed hole 7, chute 8, first guide rod 9, second Guide rod 10 , first mounting hole 11 , second mounting hole 12 , horizontal plate 13 , stop plate 14 .

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The core of the utility model is to provide a locking device for preventing misoperation of the grounding trolley, so as to avoid the potential safety hazard caused by the loss of the five defenses of the grounding trolley. Another core of the utility model is to provide a switchgear with the above-mentioned locking device for preventing misoperation of the grounding trolley.

In order to make those skilled in the art better understand the technical solutions provided by the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1-2, the locking device for preventing misoperation of the grounding trolley provided by the utility model includes a fixed plate 1 arranged on the inner wall of the switch cabinet and a sliding plate 2 slidingly matched with the fixed plate 1. The fixed plate 1 is provided with The first padlock hole 3, the sliding plate 2 is provided with the second padlock hole 4, and the sliding plate 2 is located at the front side of the bus bar copper bar of the switch cabinet (it should be noted that the above sliding plate 2 is located at the front side of the bus bar copper bar of the switch cabinet The front side, that is, the distance between the sliding plate and the switch cabinet door is less than the distance between the busbar copper bar of the switch cabinet and the switch cabinet door); when the first padlock hole 3 corresponds to the second padlock hole 4, the sliding plate 2 is in the locked position , and when the grounding trolley enters the switch cabinet, the sliding plate 2 forms a block against the bump on the upper end of the grounding trolley; when the first padlock hole 3 and the second padlock hole 4 are staggered, the sliding plate 2 is in the unlocked position, and the grounding trolley enters the When switching cabinets, the sliding plate 2 forms an avoidance relative to the protrusion.

Compared with the content introduced in the background technology, the grounding trolley anti-misoperation locking device provided by the embodiment of the utility model, when the switch cabinet is in normal operation, the sliding plate is in the locking position and locked by the five anti-locks. When the grounding trolley enters the switch cabinet, the sliding plate forms a block against the bump on the upper end of the grounding trolley, thus avoiding the misoperation of the grounding trolley when the grounding trolley fails to pass the five defenses. The isolation trolley does not have the above-mentioned bumps, Therefore, the isolation trolley can be pushed into the running position of the switch cabinet; when the busbar needs to be overhauled, the five-proof lock is opened after the five-proof logic of the microcomputer, and the sliding plate is pushed to the unlocked position, and the sliding plate avoids the bump, so that the grounding trolley can be pushed in Grounding operation is carried out in the switchgear. The above-mentioned locking device for preventing misoperation of the grounding trolley can effectively avoid the potential safety hazard of the grounding trolley losing the electrical five defenses. Further beneficial effects are that the grounding trolley is included in the unified management of the five defenses by the microcomputer, the structure is simple, and the maintenance operation of the busbar Safety.

In a further technical solution, the fixed plate 1 provided by the embodiment of the utility model may include a first bent plate 5 and a second bent plate 6, the first bent plate 5 is fixedly connected to the upper wall of the switch cabinet; the second bent plate 6 is slidingly matched with the sliding plate, and the second padlock hole 4 is arranged on the second bending plate 6 . Of course, it can be understood that the above-mentioned fixed plate structure is only an example of the embodiment of the present utility model. The fixed plate 1 can also be other forms of fixed plate, and the fixed position of the fixed plate and the switch cabinet can be on the upper wall or It is the main wall of the switch cabinet (that is, the inner wall facing the door of the switch cabinet). For example, the fixed plate 1 can also be a U-shaped fixed plate. The open end of the U-shaped fixed plate is fixedly connected with the upper wall or the front wall of the switch cabinet. U The other end of the type fixing plate is provided with a second padlock hole, and is slidably matched with the sliding plate.

In the above technical solution, the first bent plate 5 may be provided with a fixing hole 7, and the fixing hole 7 fixes the fixing plate 1 on the upper wall of the switch cabinet through bolts. Of course, it can be understood that the above-mentioned first bending plate 5 can be connected to the upper wall of the switch cabinet by welding, or other fixing methods commonly used by those skilled in the art, but the preferred embodiment of the utility model adopts fixing holes 7 is only fixed by bolts, because the fixing hole 7 is more convenient for disassembly and assembly by bolts.

Specifically, the above-mentioned second bending plate 6 is provided with a guide member, and the sliding plate is provided with a chute 8, and the chute 8 is hooked on the guide member. When the chute 8 slides to one end along the guide member, the first A padlock hole (3) corresponds to the second padlock hole (4), that is, the locking position; when the chute 8 slides to the other end along the guide member, the first padlock hole (3) and the second padlock hole (4) Staggered, that is, the unlocked position. Of course, it can be understood that the structure of the above-mentioned chute and guide part is only an example of the sliding fit between the fixed plate and the sliding plate in the embodiment of the present invention, and it can also be other sliding fit forms commonly used by those skilled in the art, such as fixed There is a groove on the board, and a convex card is provided on the sliding plate corresponding to the groove, and the convex card can slide relative to the groove, and when the convex card slides to one end along the groove, it is in the locked position, when the convex card slides along the groove To the other end is the unlocked position and so on. However, the embodiment of the utility model preferably adopts the structure in which the chute is arranged on the above-mentioned sliding plate and the guide member is arranged on the second bending plate on the fixed plate, the structure is simpler and the operation is more convenient.

More specifically, the guide member includes a first guide rod 9 and a second guide rod 10, the second bent plate 6 is provided with a first installation hole 11 and a second installation hole 12, and one end of the first guide rod 9 is installed on In the first installation hole 11 , the other end extends into the chute 8 , and one end of the second guide rod 10 is installed in the second installation hole 12 , and the other end extends into the chute 8 . It should be noted that, in order to enable the sliding plate to slide relative to the fixing plate, those skilled in the art should understand that the distance between the first mounting hole and the second mounting hole should be smaller than the length of the slide groove. Of course, it can be understood that the above-mentioned guide component can also be in the form of other guide components commonly used by those skilled in the art, such as the guide component is a convex component whose length direction is smaller than the chute, and the convex component is slidably matched with the chute, etc. . The utility model preferably adopts the above-mentioned structure of the guide rod and the installation hole, so that the structure is simpler and the installation is more convenient.

Further, the sliding plate 2 includes a horizontal plate 13 and a stop plate 14 that is connected to one end of the horizontal plate 13 and protrudes downward relative to the horizontal plate 13. The chute 8 and the second padlock hole 4 are located on the horizontal plate 13. The sliding plate 2 When being in the locked position, when the grounding trolley wants to enter the switch cabinet, the stopper plate 14 forms a block relative to the bump on the upper end of the grounding trolley; the sliding plate 2 is in the unlocked position, and the stopper plate 14 forms an avoidance relative to the projection. Through the above-mentioned structure that the stop plate 14 protrudes downward relative to the horizontal plate 13, the downward part of the horizontal plate does not need to be flush with the stop plate to form a block against the bump of the grounding trolley, thus effectively saving materials and saving cost.

Furthermore, the horizontal plate is provided with a locking sliding direction indicator and an unlocking sliding direction indicator. The staff can perform the corresponding locking or unlocking operation according to the direction mark, which is convenient to operate and can avoid misoperation.

The anti-misoperation locking device of the grounding trolley provided by the embodiment of the utility model is especially suitable for the maintenance operation of the 10kV3M bus section switchgear, which can effectively prevent the risk of misoperation of the 10KV grounding trolley from losing the five preventions, and the 10KV grounding trolley can be included in the In the unified management of the substation microcomputer and five defenses, the structure is simple and the maintenance operation of the busbar is safe.

The utility model also provides a switchgear, including a locking device for preventing misoperation of the grounding trolley, the locking device for preventing misoperation of the grounding trolley is the locking device for preventing misoperation of the grounding trolley described in any of the above schemes. Because the locking device for preventing misoperation of the grounding trolley has the above-mentioned technical effects, the switchgear with the locking device for preventing misoperation of the grounding trolley should also have corresponding technical effects, which will not be repeated here.

The locking device and switchgear for preventing misoperation of the grounding trolley provided by the utility model have been introduced in detail above. It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. For the same and similar parts in each embodiment, refer to each other, that is, Can.

It should also be noted that in this article, relational terms such as first and second etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations Any such actual relationship or order exists between. Moreover, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that an article or device comprising a set of elements includes not only those elements but also other elements not expressly listed, Or also include elements inherent in the article or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in an article or device comprising the aforementioned element.

The above description of the disclosed embodiments enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. the fool proof blocking device of grounding trolley, it is characterised in that include the fixed plate being arranged on switch cubicle inwall (1) and with the sliding panel (2) that described fixed plate (1) is slidably matched, described fixed plate (1) is provided with the first lock-receiving aperture (3), institute State and on sliding panel (2), be provided with the second lock-receiving aperture (4), and described sliding panel (2) is positioned at the front side of bus bar copper row of switch cubicle；When Described first lock-receiving aperture (3) is in locked position of coupler with described second lock-receiving aperture (4) to sliding panel (2) described time corresponding, and ground connection is little Car is when access switch cabinet, and the projection of described sliding panel (2) relative to ground dolly upper end is formed and stops；When described first lock-receiving aperture (3), when staggering with described second lock-receiving aperture (4), described sliding panel (2) is in the unlocked position, and grounding trolley is at access switch cabinet Time, described sliding panel (2) the most described projection is formed and dodges.

2. the fool proof blocking device of grounding trolley as claimed in claim 1, it is characterised in that described fixed plate (1) is wrapped Including the first bending plate (5) and the second bending plate (6), described first bending plate (5) is fixing with switch cubicle upper wall to be connected；Described second Bending plate (6) is slidably matched with sliding panel, and described second lock-receiving aperture (4) is arranged on described second bending plate (6).

3. the fool proof blocking device of grounding trolley as claimed in claim 2, it is characterised in that described first bending plate (5) being provided with fixing hole (7) on, described fixed plate (1) is fixed on switch cubicle upper wall by described fixing hole (7) by bolt.

4. the fool proof blocking device of grounding trolley as claimed in claim 2, it is characterised in that described second bending plate (6) it is provided with guiding parts on, described sliding panel is provided with chute (8), and described chute (8) is articulated in described guiding parts On, described chute (8) along described guiding parts slide into one end time, described first lock-receiving aperture (3) and described second lock-receiving aperture (4) Corresponding；Described chute (8) along described guiding parts slide into the other end time, described first lock-receiving aperture (3) and described second padlock Stagger in hole (4).

5. the fool proof blocking device of grounding trolley as claimed in claim 4, it is characterised in that described guiding parts includes First guide post (9) and the second guide post (10), described second bending plate (6) is provided with the first installing hole (11) and the second peace Dress hole (12), one end of described first guide post (9) is arranged in described first installing hole (11), and the other end stretches into described chute (8), in, one end of described second guide post (10) is arranged in described second installing hole (12), and the other end stretches into described chute (8) in.

6. the fool proof blocking device of grounding trolley as claimed in claim 5, it is characterised in that described sliding panel (2) wraps Include transverse slat (13) and connect and the downward projection of baffle plate of relative described transverse slat (13) (14) with described transverse slat (13) one end, described Chute (8) and the second lock-receiving aperture (4) are positioned on described transverse slat (13), when described sliding panel (2) is positioned at locked position, and described backstop Plate (14) the most described projection is formed and stops；When described sliding panel (2) is in the unlocked position, described baffle plate (14) is relatively described Projection is formed and dodges.

7. the fool proof blocking device of grounding trolley as claimed in claim 6, it is characterised in that described transverse slat sets on (13) There is locking slide direction indicateing arm and unlock glide direction indicateing arm.

8. a switch cubicle, including the fool proof blocking device of grounding trolley, it is characterised in that the anti-error behaviour of described grounding trolley The blocking device made is the fool proof blocking device of the grounding trolley as described in any one of claim 1-7.