Intelligent low-voltage complete draw-out type switchgear and use method thereof

Abstract

The invention provides an intelligent low-voltage complete draw-out switch device and a use method thereof, the intelligent low-voltage complete draw-out switch device comprises a plurality of layers of distributed support frames, a drawer is arranged above each layer of support frame, two sides of the drawer are connected with support columns through guide devices, and a strip-shaped plate perpendicular to the guide devices is arranged below the drawer. The two ends of each strip-shaped plate are connected with the supporting frame through a guide mechanism, the strip-shaped plates are connected with the lower portion of the drawer through a locking device, one end of each strip-shaped plate is connected with a lead screw transmission mechanism, one end of each transmission mechanism is connected with an electromagnetic clutch, and the electromagnetic clutches are arranged on the supporting columns. The end, away from the lead screw transmission mechanism, of the electromagnetic clutch is driven by the same driving device to rotate. During use, when the drawer on a certain layer needs to be opened for maintenance or overhaul, the corresponding drawer can be controlled to be automatically pushed out from the interior of the switch equipment only by pressing the corresponding operation key, the drawer can also be automatically closed, and the operation is simple.

Description

Technical Field

[0001] The present invention relates to the technical field of draw-out switchgear, and specifically to an intelligent low-voltage complete set of draw-out switchgear and its usage method. Background Technique

[0002] The draw-out switchgear is used in the processes of power transmission and distribution in the power system, playing roles such as switching on and off, controlling, and protecting. The draw-out switchgear device is applicable to the distribution systems of industries such as power plants, petroleum, chemical industry, metallurgy, textile, high-rise buildings, etc. In places with high automation levels such as large power plants and petrochemical systems, which require interfaces with computers, it is used as a low-voltage complete set of distribution devices for distribution, centralized control of motors, and reactive power compensation in power generation and power supply systems with three-phase alternating current frequency of 50(60)Hz, rated working voltage of 380V(400)V, (600)V, and rated current of 4000A and below.

[0003] Currently, when performing maintenance on the draw-out switchgear, it is necessary to manually unlock the drawers. Since the draw-out switchgear has multiple layers, multiple switches need to be opened one by one during inspection, and the operation process is cumbersome. Moreover, manual pulling may cause the drawers to be pulled out unevenly, which is likely to damage the internal electrical appliances. For this reason, we propose an intelligent low-voltage complete set of draw-out switchgear and its usage method. Summary of the Invention

[0004] The present invention provides an intelligent low-voltage complete set of draw-out switchgear and its usage method, which has the advantage of being able to automatically draw the drawers in and out, and solves the problems raised in the above background technique.

[0005] The technical solution of the present invention is realized as follows: Design an intelligent low-voltage complete set of draw-out switchgear, including a support frame distributed in multiple layers. The four corners of the support frame are respectively connected to columns. Drawers are provided above each layer of the support frame. The two sides of the drawers are connected to the columns through guiding devices. A strip plate perpendicular to the guiding device is provided below the drawers. The two ends of the strip plate are connected to the support frame through guiding mechanisms, and the strip plate is connected to the lower part of the drawer through a locking device. One end of each strip plate is respectively connected to a lead screw transmission mechanism, and one end of each transmission mechanism is connected to an electromagnetic clutch. The electromagnetic clutch is arranged on the column, and the end of the electromagnetic clutch far from the lead screw transmission mechanism is driven to rotate by the same driving device.

[0006] Preferably, the guiding device includes guide rails arranged on both sides of the drawer. The guide rails are respectively installed on mounting seats, and the two ends of the mounting seats are respectively connected to the columns.

[0007] Preferably, the guiding mechanism includes slide rails arranged on both sides of the top of the support frame. The slide rails are perpendicular to the strip plate, and the two ends of the strip plate are connected to the slide rails through sliders.

[0008] Preferably, the lead screw transmission mechanism includes a transmission lead screw located at one end of the strip board. The transmission lead screw is perpendicular to the strip board, and both ends of the transmission lead screw are rotatably connected to the struts. One end of the electromagnetic clutch is coaxially connected to one end of the transmission lead screw. A nut is threadedly installed on the transmission lead screw, and the nut is connected to the end of the strip board, so that the strip board moves along with the nut.

[0009] Preferably, the driving device includes a driving motor. The driving motor is located at the bottom of the strut, and the bottoms of the struts are all installed on the bottom plate. The driving motor is connected to the bottom plate. Transmission wheels are installed on the rotating shaft of the driving motor and at one end of each electromagnetic clutch away from the transmission lead screw, and adjacent two transmission wheels are connected by a transmission belt.

[0010] Preferably, the locking device includes a strip-shaped card slot opened on the strip board. A rotating shaft perpendicular to the strip-shaped card slot is provided below the drawer. Both ends of the rotating shaft are rotatably connected to the lower part of the drawer. A positioning post corresponding to the strip-shaped card slot is vertically provided on the rotating shaft. Rotate the rotating shaft to place the positioning post in the strip-shaped card slot. One end of the rotating shaft away from the electromagnetic clutch extends outside the drawer, and a rotating handle is installed at the end of the rotating shaft. A stop block is provided on the side of the drawer away from the electromagnetic clutch. When the rotating handle rotates and contacts the stop block, the positioning post is at this time placed in the strip-shaped card slot.

[0011] Preferably, the rotating handle and the stop block are connected by a lock or by magnetic attraction.

[0012] Preferably, the driving motor and the transmission lead screw are both located inside the sealed housing. The edge of the sealed housing is connected to the strut. A controller is provided inside the sealed housing. The controller is respectively connected to the operation screen and the operation buttons. The operation screen and the operation buttons are arranged on the side of the sealed housing. The controller is also connected to the driving device and the electromagnetic clutch.

[0013] Further, the present invention also proposes a use method of an intelligent low-voltage complete draw-out switchgear, including the following steps: Step 1, when it is necessary to draw out a certain layer of the drawer, only need to control the driving device to rotate to drive each electromagnetic clutch to rotate; Step 2, then control the electromagnetic clutch corresponding to the drawer to be drawn out to close. At this time, the lead screw transmission mechanism can achieve power connection with the pulley, and the lead screw transmission mechanism can drive the drawer to be automatically drawn out.

[0014] Compared with the prior art, when the present invention is in use, electrical equipment is installed in the drawers of each layer. When it is necessary to open, maintain or repair a certain layer of the drawer, only need to press the corresponding operation button to control the corresponding drawer to be automatically pushed out from inside the switchgear, and the drawer can also be automatically closed. Compared with the traditional low-voltage draw-out switchgear that needs to be manually drawn out, the drawer drawing of this invention saves time and effort and is simple to operate. Description of the Drawings

[0015] 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 required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic structural diagram of the front part of the present invention.

[0017] Figure 2 It is a schematic structural diagram of the rear part of the present invention.

[0018] Figure 3 It is a schematic structural diagram of the present invention after removing the sealed housing Figure 1 。

[0019] Figure 4 It is a schematic structural diagram of the present invention after removing the sealed housing Figure 2 。

[0020] Figure 5 It is a schematic structural diagram of the drawer and lead screw drive structure of the present invention Figure 1 。

[0021] Figure 6 It is a schematic structural diagram of the drawer and lead screw drive structure of the present invention Figure 2 。

[0022] Figure 7 It is a schematic structural diagram of the drawer and lead screw drive structure of the present invention Figure 3 。

[0023] Figure 8 It is a schematic structural diagram of the locking mechanism of the present invention.

[0024] In the figure: 1, sealed housing; 2, operation screen; 3, operation button; 4, stop block; 5, turning handle; 6, rotating shaft; 7, positioning column; 8, drawer; 9, strip-shaped card slot; 10, drive belt; 11, sealing plate; 12, support pillar; 13, drive wheel; 14, drive motor; 15, bottom plate; 16, mounting seat; 17, drive lead screw; 18, guide rail; 19, support frame; 20, slide rail; 21, strip-shaped plate; 22, electromagnetic clutch. Specific embodiments

[0025] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] Reference Figures 1 to 8 , the present invention provides a technical solution: an intelligent low-voltage complete draw-out switchgear, including a support frame 19 distributed in multiple layers. The four corners of the support frame 19 are respectively connected to the columns 12. The support frame 19 and the four columns 12 form the support framework of the switchgear. Above each layer of the support frame 19, there is a drawer 8. The two sides of the drawer 8 are connected to the columns 12 through a guiding device. As Figure 5 and Figure 6 shown, the guiding device includes guide rails 18 provided on both sides of the drawer 8. The guide rails 18 are respectively installed on the mounting seats 16. The two ends of the mounting seats 16 are respectively connected to the columns 12. In this way, the drawer 8 can be drawn out along the guide rails 18 and drawn into the switchgear.

[0027] Below the drawer 8, there is a strip plate 21 perpendicular to the guiding device. The two ends of the strip plate 21 are connected to the support frame 19 through a guiding mechanism. As Figure 6 and Figure 7 shown, the guiding mechanism includes slide rails 20 provided on both sides of the top of the support frame 19. The slide rails 20 are perpendicular to the strip plate 21, and the two ends of the strip plate 21 are connected to the slide rails 20 through sliders. In this way, the strip plate 21 can reciprocate along the slide rails 20. During actual use, when the strip plate 21 moves, it needs to drive the drawer 8 to move together, so that the drawer 8 is pushed to the outside of the switchgear. Since electrical equipment is installed in the drawer, only when the drawer 8 is pushed to the outside of the switchgear can the electrical equipment in the drawer 8 be exposed. Therefore, the strip plate 21 and the drawer 8 are connected through a locking device below, so that the strip plate 21 and the drawer 8 are connected as a whole;

[0028] The specific structure of the locking device is as Figure 8 shown. The locking device includes a strip-shaped card slot 9 opened on the strip plate 21. Below the drawer 8, there is a rotating shaft 6 perpendicular to the strip-shaped card slot 9. The two ends of the rotating shaft 6 are rotatably connected to the lower part of the drawer 8. On the rotating shaft 6, there is a positioning column 7 perpendicular to the position corresponding to the strip-shaped card slot 9. Rotate the rotating shaft 6 to place the positioning column 7 in the strip-shaped card slot 9. In order to facilitate the rotation of the rotating shaft 6, during installation, one end of the rotating shaft 6 extends outside the drawer 8, and a rotating handle 5 is installed at the end of the rotating shaft 6. On the side of the drawer 8 away from the electromagnetic clutch 22, there is a stop block 4. When the rotating handle 5 rotates and contacts the stop block 4, at this time, the positioning column 7 is placed in the strip-shaped card slot 9, and at this time, the strip plate 21 can drive the drawer 8 to move through the positioning column 7;

[0029] In order to fix the rotating handle 5 to the stopper 4 and prevent the positioning post 7 from slipping out of the strip-shaped card slot 9, the rotating handle 5 and the stopper 4 are connected by a lock or by magnetic attraction, so as to avoid the random swinging of the rotating handle 5. However, when the rotating handle 5 is rotated, the rotating handle 5 will drive the positioning post 7 to rotate out of the strip-shaped card slot 9, so that the strip-shaped plate 21 can be separated from the drawer 8. In this way, the operator can pull the drawer 8 by hand and take out the drawer 8 from the switchgear.

[0030] Furthermore, one end of each strip-shaped plate 21 is respectively connected to a lead screw drive mechanism. As Figure 5 shown, the lead screw drive mechanism includes a drive lead screw 17 located at one end of the strip-shaped plate 21. The drive lead screw 17 is perpendicular to the strip-shaped plate 21, and both ends of the drive lead screw 17 are rotatably connected to the support columns 12. A nut is threadedly installed on the drive lead screw 17, and the nut is connected to the end of the strip-shaped plate 21. When the drive lead screw 17 rotates, it can drive the nut to move along its axis, so that the strip-shaped plate 21 follows the nut to move.

[0031] One end of each drive mechanism is connected to an electromagnetic clutch 22, that is, one end of the electromagnetic clutch 22 is coaxially connected to one end of the drive lead screw 17. It should be noted that the electromagnetic clutch 22 is located at the end of the drawer 8 away from the rotating handle 5 to avoid mutual influence when they are located at the same end. During installation, the electromagnetic clutch 22 needs to be set on the support column 12, and then the end of the electromagnetic clutch 22 away from the lead screw drive mechanism is driven to rotate by the same driving device.

[0032] As Figure 3 shown, the driving device includes a driving motor 14. The driving motor 14 is located at the bottom of the support column 12, and the bottoms of the support columns 12 are all installed on the bottom plate 15. The driving motor 14 is also installed on the bottom plate 15. Transmission wheels 13 are installed on the rotating shaft of the driving motor 14 and at the end of each electromagnetic clutch 22 away from the drive lead screw 17. Adjacent two transmission wheels 13 are connected by a transmission belt 10. Here, the transmission wheels 13 are synchronous wheels. Correspondingly, the transmission belt 10 is a synchronous belt. Of course, the transmission belt and the transmission wheels can also be replaced by a transmission chain and sprockets.

[0033] Furthermore, as Figure 1 shown, the driving motor 14 and the drive lead screw 17 are both located in the sealed housing 1. The edge of the sealed housing 1 is connected to the support column 12. A controller is provided in the sealed housing 1. The controller is respectively connected to the operation screen 2 and the operation buttons 3. The operation screen 2 and the operation buttons 3 are arranged on the side of the sealed housing 1. The controller is also connected to the driving device and the electromagnetic clutch 22. The operation buttons 3 respectively correspond to the drawers 8 of each layer. The drawers 8 are numbered 1, 2, 3, 4, 5,... N from bottom to top in sequence. The operation buttons 3 include numbers 1, 2, 3, 4, 5,... N.

[0034] Based on the above embodiments, the intelligent low-voltage complete draw-out switchgear proposed by the present application works as follows. First, electrical equipment is installed in the drawers 8 on each layer. During long-term use, when it is necessary to open a certain layer of the drawer 8 for maintenance or repair, only need to press the corresponding operation button 3 to control the corresponding drawer 8 to automatically push out from the inside of the switchgear;

[0035] Because when the driving motor 14 rotates, it drives one end of each electromagnetic clutch 22 to rotate. In the initial state, each electromagnetic clutch 22 is in a released state. When a certain operation button 3 is pressed, the corresponding electromagnetic clutch 22 automatically closes. At this time, the electromagnetic clutch 22 will transmit the power of the pulley to the transmission lead screw 17, and the transmission lead screw 17 will drive the nut to move, and finally the transmission lead screw 17 will push the drawer 8 out of the switchgear. When it is necessary to send the drawer 8 into the switchgear, press the operation button 3 again to control the driving motor 14 to drive the transmission lead screw 17 to reverse, so as to send the drawer 8 into the switchgear.

[0036] Based on the above embodiments, as Figure 1 and Figure 2 shown, the electrical equipment in the drawer 8 needs to be installed with corresponding plugs, and the corresponding to the plug is the socket. During actual use, the socket is arranged on the frame (such as Figure 2 the position indicated by the arrow A in

[0037] ). The frame is also multi-layered and is located on the side of the tail of each drawer 8. Both ends of the frame are connected to the support columns 12 respectively. In this way, when the drawer 8 is closed, the plug on the drawer 8 can be inserted into the corresponding socket to realize the conduction of the circuit.

[0038] The present invention also proposes a use method of an intelligent low-voltage complete draw-out switchgear, which is characterized by including the following steps:

[0039] Step 1: When it is necessary to draw out a certain layer of the drawer 8, only need to control the driving device to rotate and drive each electromagnetic clutch 22 to rotate;

[0040] Step 2: Then control the electromagnetic clutch 22 corresponding to the drawer 8 to be drawn out to close. At this time, the lead screw transmission mechanism can be connected with the pulley to achieve power connection, and the lead screw transmission mechanism can drive the drawer 8 to automatically draw out. This method is simple to operate and convenient to use. When drawing out a certain layer of the drawer 8, only need to press the corresponding operation button 3 to start with one key, and when sending the drawer 8 into the switchgear, it can also be completed with one key start.

[0041] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An intelligent low-voltage complete withdrawable switchgear, comprising a multi-layered support frame (19), wherein the four corners of the support frame (19) are respectively connected to pillars (12), characterized in that: A drawer (8) is provided above each layer of the support frame (19), and both sides of the drawer (8) are connected to the support column (12) through a guide device; A strip plate (21) perpendicular to the guide device is provided below the drawer (8), both ends of the strip plate (21) are connected to the support frame (19) through the guide mechanism, and the strip plate (21) is connected to the bottom of the drawer (8) through a locking device; One end of each strip plate (21) is connected to a lead screw transmission mechanism, and one end of each transmission mechanism is connected to an electromagnetic clutch (22). The electromagnetic clutch (22) is arranged on the pillar (12), and one end of the electromagnetic clutch (22) away from the lead screw transmission mechanism is driven to rotate by the same driving device.

2. The intelligent low-voltage complete withdrawable switchgear according to claim 1, characterized in that: The guide device comprises guide rails (18) arranged on both sides of the drawer (8), the guide rails (18) are respectively mounted on the mounting seats (16), and the two ends of the mounting seats (16) are respectively connected to the pillars (12).

3. The intelligent low-voltage complete withdrawable switchgear according to claim 1, characterized in that: The guide mechanism comprises slide rails (20) arranged on both sides of the top of the support frame (19); the slide rails (20) are perpendicular to the strip plate (21); and both ends of the strip plate (21) are connected to the slide rails (20) via sliding blocks.

4. The intelligent low-voltage complete withdrawable switchgear according to claim 3, characterized in that: The screw transmission mechanism comprises a transmission screw (17) located at one end of the strip plate (21), the transmission screw (17) is perpendicular to the strip plate (21), and both ends of the transmission screw (17) are respectively connected to the support (12) for rotation; One end of the electromagnetic clutch (22) is coaxially connected to one end of the driving screw (17). A nut is threadedly mounted on the driving screw (17). The nut is connected to the end of the strip plate (21), so that the strip plate (21) moves with the nut.

5. The intelligent low-voltage complete withdrawable switchgear according to claim 4, characterized in that: The driving device comprises a driving motor (14), the driving motor (14) is located at the bottom of the pillar (12), the bottom of the pillar (12) is mounted on a bottom plate (15), and the driving motor (14) is connected to the bottom plate (15); A transmission wheel (13) is installed on the rotating shaft of the driving motor (14) and on one end of each electromagnetic clutch (22) away from the transmission screw (17), and two adjacent transmission wheels (13) are connected via a transmission belt (10).

6. The intelligent low-voltage complete withdrawable switchgear according to claim 5, characterized in that: The locking device comprises a strip-shaped slot (9) formed on the strip-shaped plate (21); A rotating shaft (6) is provided at the bottom of the drawer (8) and is arranged perpendicularly to the strip-shaped card slot (9). Both ends of the rotating shaft (6) are rotatably connected to the bottom of the drawer (8). A positioning column (7) is vertically provided on the rotating shaft (6) and is located corresponding to the strip-shaped card slot (9). The rotating shaft (6) is rotated to place the positioning column (7) in the strip-shaped card slot (9). One end of the rotating shaft (6) away from the electromagnetic clutch (22) extends out of the drawer (8) and a rotating handle (5) is installed on the end of the rotating shaft (6). A stopper (4) is provided on the side surface of the end of the drawer (8) away from the electromagnetic clutch (22). When the rotating handle (5) is rotated to contact the stopper (4), the positioning column (7) is placed in the bar-shaped slot (9).

7. The intelligent low-voltage complete withdrawable switchgear according to claim 6, characterized in that: The turning handle (5) and the stopper (4) are connected via a lock or by magnetic attraction.

8. The intelligent low-voltage complete withdrawable switchgear according to claim 7, characterized in that: The driving motor (14) and the driving screw (17) are both located in the sealed housing (1), and the edge of the sealed housing (1) is connected to the support (12); A controller is arranged inside the sealed housing (1), and the controller is connected to an operation screen (2) and an operation button (3) respectively. The operation screen (2) and the operation button (3) are arranged on the side of the sealed housing (1), and the controller is also connected to a driving device and an electromagnetic clutch.

9. A method for using the intelligent low-voltage complete withdrawable switchgear according to claim 8, characterized in that: The following steps are involved: Step 1: When a drawer (8) of a certain layer needs to be pulled out, it is only necessary to control the driving device to rotate to drive each electromagnetic clutch (22) to rotate; Step 2: Then, the electromagnetic clutch (22) corresponding to the drawer (8) to be drawn out is controlled to close, and at this time, the screw transmission mechanism can achieve power connection with the pulley, and the screw transmission mechanism can drive the drawer (8) to be automatically drawn out.

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