CN218161325U

CN218161325U - Upper cabinet door of switch cabinet capable of being pulled down

Info

Publication number: CN218161325U
Application number: CN202222208628.3U
Authority: CN
Inventors: 王祥念
Original assignee: Lianyungang Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Current assignee: Lianyungang Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Priority date: 2022-08-22
Filing date: 2022-08-22
Publication date: 2022-12-27
Anticipated expiration: 2032-08-22

Abstract

The application discloses an upper cabinet door of a pull-down switch cabinet, which is connected to a side plate of the switch cabinet through a lifting mechanism; the lifting mechanism comprises a controllable gas spring and an L-shaped crank arm; one end of the controllable gas spring is fixed on a side plate of the switch cabinet through a first fixed rotatable connection point, and the other end of the controllable gas spring is movably connected with an L-shaped crank arm; the corner of the L-shaped crank arm is fixed on the side plate of the switch cabinet through a second fixed rotatable connecting point, and the straight arm at one end of the L-shaped crank arm, which is far away from the controllable gas spring, is connected to the upper cabinet door. A third fixed rotatable connecting point is arranged on the side plate of the switch cabinet, a straight arm with the same length as that of the straight arm of the L-shaped crank arm is arranged between the third fixed rotatable connecting point and the upper cabinet door, and the straight arms are parallel to each other to form a parallel four-bar linkage mechanism. The device saves time and labor more when the device on the upper cabinet door panel needs to be operated through the lifting mechanism; the device enables operators to avoid climbing up, and is safer; meanwhile, the upper cabinet door can be pulled down and can be opened laterally, so that the cabinet is more flexible.

Description

Upper cabinet door of switch cabinet capable of being pulled down

Technical Field

The utility model belongs to the technical field of electrical engineering, especially, relate to a but pull-down's cubical switchboard cabinet door.

Background

In a transformer substation, the application of a 10kV switch cabinet is very wide. The upper cabinet door of the switch cabinet is usually provided with a protection measurement and control device, a protection pressing plate, an instrument, an indicator light and the like. Because the handcart switch of the switch cabinet is in the middle, and the relay protection instrument bin is positioned above the handcart switch, the position of a cabinet door is higher. In daily operation, look over and modify protection definite value, look over trip record etc. and need often operate on protection device, and protection measurement and control device installs on last cabinet door, and is high, need step on insulating ladder and just can arrive, and is unsafe, falls down easily, brings very big inconvenience for daily work. At present, the upper cabinet door of the switch cabinet is opened leftwards, the cabinet door is fixed in height, the upper cabinet door is high in installation height, the upper cabinet door is opened leftwards, the upper cabinet door is easy to touch, and in use, an operator needs to step on a ladder, so that the switch cabinet is unsafe.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to design a but pull-down cubical switchboard cabinet door of going up, solve among the prior art cabinet door height fixed, the high and last cabinet door of adopting the side mode of opening a door of mounting height bumps the head easily, and the operation personnel need step on the ladder, unsafe problem in the use. Make can be with the whole panel drop-down of last cabinet door when needs are operated, make the modification check the protection definite value, look over protection trip information operation simpler, labour saving and time saving, need not to ascend a height among the operation process, safer.

In order to achieve the above object, the utility model provides a following technical scheme: an upper cabinet door of a pull-down switch cabinet is connected with a side plate of the switch cabinet through a lifting mechanism; the lifting mechanism comprises a controllable gas spring and an L-shaped crank arm; one end of the controllable gas spring is fixed on the side plate of the switch cabinet through a first fixed rotatable connection point, and the other end of the controllable gas spring is movably connected with an L-shaped crank arm; the corner of the L-shaped crank arm is fixed on the side plate of the switch cabinet through a second fixed rotatable connecting point, and the straight arm at one end of the L-shaped crank arm, which is far away from the controllable gas spring, is connected to the upper cabinet door.

Furthermore, a third fixed rotatable connecting point is arranged on a side plate of the switch cabinet, a straight arm with the same length as that of the straight arm of the L-shaped crank arm is arranged between the third fixed rotatable connecting point and the upper cabinet door, and the straight arm is parallel to the straight arm of the L-shaped crank arm to form a parallel four-bar linkage mechanism.

Furthermore, a limiting device is arranged on the straight arm of the L-shaped crank arm.

Furthermore, the limiting device is an anti-collision block and is made of elastic materials; the anti-collision block is located at the highest stopping position of the straight arm of the L-shaped connecting arm and used for stopping and limiting the straight arm of the L-shaped connecting arm when the parallel four-bar linkage rebounds and resets to the highest position, so that the buffering effect is achieved, and the purpose of reducing collision noise is achieved.

Furthermore, a straight arm of the L-shaped crank arm is rotationally connected with the upper cabinet door through a rotatable connecting point. The rotatable connection point is a hinged connection and can rotate.

Furthermore, a limit groove is formed in the side plate of the switch cabinet, a limit nail is arranged on a straight arm arranged between the third fixed rotatable connecting point and the upper cabinet door, and the limit nail is arranged in the limit groove in a sliding mode and used for preventing the device from shaking unstably.

Furthermore, a movable door is arranged on the upper cabinet door through a hinge and can be opened towards the left side.

Furthermore, a protective device mounting hole is formed in the movable door.

Further, a handle is arranged on the upper cabinet door.

Compared with the prior art, the beneficial effects of the utility model are that: 1) Through the lifting mechanism, time and labor are saved when the device on the upper cabinet door panel needs to be operated; 2) The device enables operators to avoid climbing up, and is safer; 3) The upper cabinet door can be pulled down, and the side door can be opened, so that the cabinet is more flexible.

To illustrate the functional characteristics and structural parameters of the present invention more clearly, the following description is given with reference to the accompanying drawings and the detailed description.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

FIG. 1 is a side view of the upper cabinet door of the present invention;

FIG. 2 is a front panel structure diagram of the upper cabinet door of the present invention;

the reference numbers in the figures are: the device comprises a first fixed rotatable connecting point 1, a controllable gas spring 2, an L-shaped crank arm 3, a third fixed rotatable connecting point 4, a second fixed rotatable connecting point 5, a limiting device 6, a rotatable connecting point 7, an upper cabinet door 8, a limiting groove, a hinge 10, a handle 11, a protective device mounting hole 12 and a movable door 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; 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.

As shown in fig. 1, the upper cabinet door 8 is connected to a side plate of the switch cabinet through a lifting mechanism; the lifting mechanism comprises a controllable gas spring 2 and an L-shaped crank arm 3; one end of a controllable gas spring 2 is fixed on a side plate of the switch cabinet through a first fixed rotatable connecting point 1, and the other end of the controllable gas spring 2 is movably connected with an L-shaped crank arm 3; the corner of the L-shaped crank arm 3 is fixed on a side plate of the switch cabinet through a second fixed rotatable connecting point 5, and a straight arm of one end of the L-shaped crank arm 3, which is far away from the controllable gas spring 2, is connected to an upper cabinet door 8. The switch cabinet side plate is provided with a third fixed rotatable connecting point 4, a straight arm with the same length as the straight arm of the L-shaped crank arm 3 is arranged between the third fixed rotatable connecting point 4 and the upper cabinet door 8, and the two straight arms are parallel to each other. A limiting device 6 is arranged on the straight arm of the L-shaped crank arm 3, and the straight arm of the L-shaped crank arm 3 is rotatably connected through a rotatable connecting point 7. A limit groove 9 is formed in the side plate of the switch cabinet, a limit nail is arranged on a straight arm arranged between the third fixed rotatable connecting point 4 and the upper cabinet door 8, and the limit nail is arranged in the limit groove 9 in a sliding mode.

As shown in fig. 2, the upper cabinet door 8 is connected to the side plates at both sides of the switch cabinet through two sets of lifting mechanisms. A movable door 13 is arranged on the upper cabinet door 8 through a hinge 10, a protective device mounting hole 12 is arranged on the movable door 13, and a handle 11 is arranged on the upper cabinet door 8.

The theory of operation of this device utilizes parallel four-bar linkage's translation elevating system to realize the cabinet door oscilaltion, and this simple structure is reliable, and drop-down and push-up easy operation simultaneously, make cabinet door 8 can keep rising and drop-down state after rising and drop-down through L type turning arm 3 with the help of controllable air spring 2, and concrete theory of operation is as follows:

the L-shaped crank arm 3 and the straight arm mainly play a role in supporting the cabinet door, the translational lifting mechanism forming the parallel four-bar linkage mechanism realizes the up-and-down lifting of the upper cabinet door 8, the controllable gas spring 2 can provide elastic forces in different directions when the L-shaped crank arm 3 rotates up and down at different positions, and the upper cabinet door 8 is kept in a pull-down state and a push-up state by the elastic forces. The controllable gas spring 2 mainly has the function of providing elasticity, and the limiting groove 9 mainly has the function of fixing the support to prevent the lifting mechanism from being unstable in left-right swinging.

The specific working process is as follows:

when going up cabinet door 8 pulldown, go up cabinet door 8 pulldown and drive L type turning arm 3 and rotate earlier controllable air spring 2 of compression, when controllable air spring 2 is on first fixed rotatable joint point 1, when the line of 5 two points of the fixed rotatable joint point of second, the controllable air spring 2 amount of compression is the biggest, continue to pull down controllable air spring 2 will be the state in figure 2, controllable air spring 2 external acting extension this moment, receive gravity and spring action, whole last cabinet door 8 keeps on the state of pulling down, L type turning arm 3 top below this moment is on stop device 6.

When the upper cabinet door 8 is pushed up, the upper cabinet door 8 is pulled down to drive the L-shaped crank arm 3 to rotate and compress the controllable air spring 2 first, when the controllable air spring 2 is connected with the first fixed rotatable connecting point 1 and the second fixed rotatable connecting point 5, the compression amount of the compressed controllable air spring 2 is maximum, the controllable air spring 2 is continuously pushed up to be in the state in the figure 1, the controllable air spring 2 is extended by applying work outwards at the moment, the elastic force of the controllable air spring 2 enables the whole cabinet door to be kept in the rising state, and the straight arm of the L-shaped crank arm 3 abuts against the limiting device 6 above at the moment.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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

Claims

1. A pull-down upper cabinet door of a switch cabinet is characterized in that the upper cabinet door (8) is connected to a side plate of the switch cabinet through a lifting mechanism; the lifting mechanism comprises a controllable gas spring (2) and an L-shaped crank arm (3); one end of the controllable gas spring (2) is fixed on a side plate of the switch cabinet through a first fixed rotatable connecting point (1), and the other end of the controllable gas spring (2) is movably connected with an L-shaped crank arm (3); the corner of the L-shaped crank arm (3) is fixed on a side plate of the switch cabinet through a second fixed rotatable connecting point (5), and a straight arm, far away from one end of the controllable gas spring (2), of the L-shaped crank arm (3) is connected to an upper cabinet door (8).

2. The upper cabinet door of the pulldown switch cabinet as claimed in claim 1, wherein a third fixed rotatable connection point (4) is provided on the side plate of the switch cabinet, a straight arm having the same length as the straight arm of the L-shaped crank arm (3) is provided between the third fixed rotatable connection point (4) and the upper cabinet door (8), and the straight arm of the L-shaped crank arm (3) are parallel to each other to form a parallel four-bar linkage mechanism.

3. The upper cabinet door of the pulldown switch cabinet as claimed in claim 2, wherein a limiting device (6) is arranged on the straight arm of the L-shaped crank arm (3).

4. The upper cabinet door of the pulldown switch cabinet as claimed in claim 3, wherein the limiting device (6) is an anti-collision block made of elastic material; the anti-collision block is positioned at the highest stop position of the straight arm of the L-shaped crank arm (3).

5. The upper cabinet door of the pulldown switch cabinet as claimed in claim 1, wherein the straight arm of the L-shaped crank arm (3) is rotatably connected with the upper cabinet door (8) through a rotatable connection point (7).

6. The upper cabinet door of the pull-down switch cabinet as claimed in claim 2, wherein a limit groove (9) is formed on the side plate of the switch cabinet, a limit nail is arranged on a straight arm arranged between the third fixed rotatable connection point (4) and the upper cabinet door (8), and the limit nail is slidably arranged in the limit groove (9) to prevent the device from shaking unstably.

7. A pulldown upper door for a switchgear cabinet, as claimed in claim 1, characterized in that the upper door (8) is provided with a movable door (13) by means of a hinge (10).

8. A pulldown upper cabinet door of a switchgear, as claimed in claim 7, characterized in that the movable door (13) is provided with a protection device mounting hole (12).

9. The upper cabinet door of the pulldown switch cabinet as claimed in claim 1, wherein the upper cabinet door (8) is provided with a handle (11).