CN217768146U

CN217768146U - Automatic switching device of standby power supply

Info

Publication number: CN217768146U
Application number: CN202221207878.9U
Authority: CN
Inventors: 苏轶群; 胡昀实
Original assignee: Ningbo Tianan Smart Grid Technology Co ltd
Current assignee: Ningbo Tianan Smart Grid Technology Co ltd
Priority date: 2022-05-18
Filing date: 2022-05-18
Publication date: 2022-11-08
Anticipated expiration: 2032-05-18

Abstract

The application discloses an automatic switching device for a standby power supply, which comprises an installation rack, a first contact rod, a second contact rod and a switching mechanism; the first contact rod and the second contact rod are respectively installed on two sides of the installation frame in a sliding mode, the first contact rod is used for being electrically connected with an electric load, and the second contact rod is used for being electrically connected with a standby power supply; the switching mechanism is installed in the mounting bracket and is connected with first feeler lever and second feeler lever respectively to make when the main power outage back, the switching mechanism is suitable for first feeler lever of synchronous drive and second feeler lever and moves to mutual contact in opposite directions, and then can communicate stand-by power supply and power consumption load. The beneficial effect of this application: when the main power supply is powered off, the switching mechanism can simultaneously drive the first contact rod and the second contact rod to synchronously move in opposite directions until the first contact rod and the second contact rod are in contact connection with each other. Compared with the traditional one-way driving connection, the standby power supply can be effectively shortened for the time required when being switched on, so that the loss caused by the power failure of the main power supply is reduced or avoided.

Description

Automatic switching device for standby power supply

Technical Field

The application relates to the technical field of power equipment, in particular to an automatic switching device for a standby power supply.

Background

In a power network, many users have high requirements on the reliability of power supply, such as hospitals, universities and special production factories, and such units may cause significant economic loss and even casualties to the units in case of power generation and power failure. Therefore, the above-mentioned power supply systems of these units are required to be equipped with a main power supply and a backup power supply. The standby power supply is a power supply which can effectively and continuously supply power to all loads when a main power supply fails or is powered off.

When the main power supply is suddenly powered off, the existing standby power supply is generally automatically switched through an automatic switching device. However, the existing automatic switching devices are basically in one-way switching, which results in low switching speed, and for the units, the switching speed of the standby power supply is as high as possible; therefore, there is a need for improvement of the existing automatic switching device.

SUMMERY OF THE UTILITY MODEL

One of the purposes of the present application is to provide an automatic switching device capable of realizing fast switching of a standby power supply.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: an automatic switching device for a standby power supply comprises a mounting rack, a first contact rod, a second contact rod and a switching mechanism; the first contact rod and the second contact rod are respectively installed on two sides of the installation frame in a sliding mode, the first contact rod is used for being electrically connected with an electric load, and the second contact rod is used for being electrically connected with a standby power supply; the switching mechanism is installed in the mounting bracket and respectively with first feeler lever with the second feeler lever is connected to make after the main power supply outage, the switching mechanism is suitable for synchronous drive first feeler lever with the second feeler lever removes in opposite directions to mutual contact, and then can communicate stand-by power supply and power consumption load.

Preferably, the mounting rack is fixedly arranged through a mounting plate connected with the bottom; the first feeler lever and the second feeler lever are arranged on the mounting frame or the mounting plate in a sliding manner.

Preferably, the switching mechanism comprises an electromagnet, a push-pull component, a spring and a pair of traction components; the traction components are symmetrically arranged at the lower part of the mounting rack and are respectively connected with the first feeler lever and the second feeler lever; the push-pull component is vertically and elastically arranged in the middle of the mounting rack in a sliding manner through the spring, and the lower part of the push-pull component is respectively connected with the two traction components; the electromagnet is arranged at the top of the mounting rack, is suitable for being electrically connected with a main power supply, and is suitable for being magnetically matched with the push-pull component; when a main power supply supplies power to an electric load, the electromagnet is suitable for generating repulsion force on the push-pull component, and the first contact rod is separated from the second contact rod; when the main power supply is powered off, the push-pull component drives the traction component to drive the first contact rod and the second contact rod to contact under the reset elastic force of the spring, and then the standby power supply is communicated with the electric load.

Preferably, the traction component comprises a rotating rod, a traction rod and at least one traction plate; the middle part of the traction plate is rotatably connected with the mounting frame through the rotating rod, the traction rod is arranged at the lower part of the traction plate, and the traction rod is suitable for being connected with the first feeler lever or the second feeler lever; the upper portion of the traction plate is provided with a connecting groove, the connecting groove is suitable for being connected with the lower portion of the push-pull component, so that when the push-pull component moves vertically, the push-pull component slides along the connecting groove to drive the traction plate to rotate around the axial direction of the rotating rod, and then the traction rod drives the first contact rod and the second contact rod to move in the opposite direction or in the opposite direction.

Preferably, the traction plate is divided into a first plate section and a second plate section along the installation position of the rotating rod, and an included angle between the first plate section and the second plate section is 45-150 degrees.

Preferably, the included angle between the first plate section and the second plate section is 90 ° or 120 °.

Preferably, the push-pull component comprises a guide rod and a push-pull rod; the guide rod is vertically and slidably arranged on a guide sleeve arranged in the middle of the mounting rack; the push-pull rod is vertically arranged at the lower part of the guide rod and is in sliding connection with the connecting groove at the upper part of the traction plate; the upper part of the guide rod is provided with a magnetic part which is suitable for being in magnetic fit with the electromagnet; the spring is sleeved on the guide rod, the upper end of the spring is abutted to the magnetic part, and the lower end of the spring is abutted to the guide sleeve.

Preferably, sliding sleeves are symmetrically arranged on two sides of the mounting frame, and the first feeler lever and the second feeler lever are correspondingly slidably mounted on the sliding sleeves.

Preferably, the first feeler lever and the second feeler lever are fixedly sleeved with traction blocks, the traction blocks are provided with traction grooves, and the traction grooves are in sliding connection with the traction rods.

Preferably, the end parts of the first feeler lever and the second feeler lever, which are far away from each other, are provided with connecting parts, and the connecting parts are respectively used for connecting an electric load and a standby power supply; the first feeler lever and the second feeler lever are provided with contacts at the ends close to each other, and the first feeler lever and the second feeler lever are suitable for communicating an electric load with a standby power supply through the contact of the contacts.

Compared with the prior art, the beneficial effect of this application lies in:

the first contact rod and the second contact rod are connected with the switching mechanism, so that when the main power supply is powered off, the switching mechanism can simultaneously drive the first contact rod and the second contact rod to synchronously move in opposite directions until the first contact rod and the second contact rod are in contact connection with each other. Compared with the traditional one-way driving connection, the standby power supply can be effectively shortened for the time required when being switched on, so that the loss caused by the power failure of the main power supply is reduced or avoided.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the exploded state of the present invention.

Fig. 3 is a schematic structural diagram of the middle mounting frame of the present invention.

Fig. 4 is a schematic structural diagram of the first contact rod or the second contact rod of the present invention.

Fig. 5 is a schematic diagram of an exploded state of the switching mechanism of the present invention.

Fig. 6 is a schematic structural view of the middle push-pull member of the present invention.

Fig. 7 is a schematic structural view of a middle traction component of the present invention.

Fig. 8 is a schematic diagram of a state in which the switching mechanism does not drive the first feeler lever and the second feeler lever to communicate with each other.

Fig. 9 is a schematic diagram of a state in which the switching mechanism drives the first contact rod and the second contact rod to communicate.

In the figure: the device comprises a mounting plate 1, a mounting frame 2, a sliding sleeve 21, a rotating hole 22, a guide sleeve 23, a connecting seat 24, a first contact rod 31, a second contact rod 32, a connecting part 301, a contact 302, a traction block 33, a traction groove 330, a switching mechanism 4, an electromagnet 41, a push-pull component 42, a guide rod 421, a magnetic part 422, a push-pull rod 423, a traction component 43, a traction plate 431, a first plate section 4311, a second plate section 4312, a connecting groove 4310, a rotating rod 432, a traction rod 433 and a spring 44.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate orientations and positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of the 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 should not be construed as limiting the specific scope of the present application.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

In one preferred embodiment of the present application, as shown in fig. 1 to 9, an automatic switching device for a backup power supply includes a mounting frame 2, a first contact rod 31, a second contact rod 32 and a switching mechanism 4. The first feeler lever 31 and the second feeler lever 32 are respectively and slidably arranged at two sides of the mounting frame 2; wherein, the first end of the first contact rod 31 can be used for electrically connecting an electrical load; the first end of the second trolley 32 is used for electrically connecting a standby power supply. The switching mechanism 4 is mounted on the mounting frame 2 and is connected to the first contact rod 31 and the second contact rod 32 respectively. When the main power supply supplies power to the electric load, the switching mechanism 4 may drive the second ends of the first contact rod 31 and the second contact rod 32 to move away from each other, so as to disconnect the standby power supply from the electric load; when the main power supply is powered off, the switching mechanism 4 can immediately and synchronously drive the first contact rod 31 and the second contact rod 32 to move in opposite directions until the second ends of the first contact rod 31 and the second contact rod 32 are in contact with each other, so that the standby power supply is communicated with the power load.

It can be understood that, through switching mechanism 4 to the synchronous drive of first feeler lever 31 and second feeler lever 32, compare traditional one-way drive mode, under the condition that the migration distance is equal with moving speed, this application can shorten half the time that stand-by power supply and power consumption load communicate, and then can effectual reduction or avoid the loss that the main power outage brought.

In this embodiment, as shown in fig. 1 and fig. 2, the bottom of the mounting bracket 2 is connected to the mounting plate 1 through a bolt, and the mounting bracket 2 can be fixedly mounted at a desired position through the mounting plate 1, so as to facilitate automatic switching of the standby power supply. In this case, the first contact rod 31 and the second contact rod 32 may be slidably installed on the mounting bracket 2, or may be slidably installed on the mounting plate 1. The specific arrangement positions of the first contact rod 31 and the second contact rod 32 can be selected according to actual needs, for example, as shown in fig. 1 to 3 and fig. 8 and 9, the first contact rod 31 and the second contact rod 32 are correspondingly slidably mounted on two sides of the mounting frame 2.

Specifically, sliding sleeves 21 are symmetrically arranged on two sides of the mounting frame 2, and the first feeler lever 31 and the second feeler lever 32 are correspondingly slidably mounted on the sliding sleeves 21. The stability of the first contact rod 31 and the second contact rod 32 during the axial sliding can be ensured by the sliding sleeve 21.

It can be understood that the mounting bracket 2 can be directly installed at a desired position by bolts, but sometimes the mounting bracket is limited by the installation position, and the installation position needs to be adjusted, but the size of the mounting bracket 2 cannot be adjusted basically, so that the limitation of the installation position is avoided by connecting a mounting plate 1 to the bottom of the mounting bracket 2 by bolts and adjusting the position of the mounting plate 1.

Meanwhile, the automatic switching device of the standby power supply can be vertically arranged or laterally arranged at a required position through the mounting plate 1.

In one embodiment of the present application, as shown in fig. 5 to 9, the switching mechanism 4 includes an electromagnet 41, a push-pull member 42, a spring 44, and a pair of traction members 43. The two traction components 43 are symmetrically arranged at the lower part of the mounting frame 2 and are respectively connected with the first feeler lever 31 and the second feeler lever 32; the push-pull component 42 is vertically and elastically arranged in the middle of the mounting frame 2 in a sliding manner through a spring 44, and the lower part of the push-pull component 42 is respectively connected with the two traction components 43; the electromagnet 41 is arranged on the top of the mounting frame 2, and the main power supply can electrically connect and supply power to the electromagnet 41, and meanwhile, the electromagnet 41 and the push-pull component 42 are matched magnetically.

It can be understood that, when the main power supply supplies power to the electric load, the main power supply also supplies power to the electromagnet 41, so that the electromagnet 41 can generate a repulsive force to the push-pull member 42, and the push-pull member 42 moves vertically downward under the repulsive force. During the downward movement of the push-pull member 42, the spring 44 is compressed, and the push-pull member 42 can drive the first contact rod 31 and the second contact rod 32 to move back and forth through the traction member 43, so that the standby power source and the electric load are in a disconnected state. When the main power supply is powered off, the electromagnet 41 is powered off to lose the repulsion force on the push-pull component 42; at this time, the push-pull member 42 can be vertically moved upward by the restoring elastic force of the spring 44. In the process that the push-pull component 42 moves upwards, the traction component 43 can be driven to respectively drive the first contact rod 31 and the second contact rod 32 to move towards each other until the first contact rod 31 and the second contact rod 32 are contacted, and at the moment, the standby power supply and the electric load are in a communicated state, so that the standby power supply can be automatically switched.

In this embodiment, as shown in fig. 6, 8 and 9, the pulling member 43 includes a rotating rod 432, a pulling rod 433 and at least one pulling plate 431. The middle part of the traction plate 431 is rotatably connected with the mounting frame 2 through a rotating rod 432, the traction rods 433 are arranged at the lower part of the traction plate 431, and the traction rods 433 on the two traction parts 43 are respectively connected with the first feeler lever 31 and the second feeler lever 32; the upper portion of the pulling plate 431 can be connected to the lower portion of the push-pull member 42. When the push-pull member 42 is moved vertically, the pull plate 431 is driven to rotate around the axial direction of the rotation rod 432 by the push-pull member 42, so that the first trolley 31 and the second trolley 32 are driven to move towards or away from each other by the pull rod 433.

It will be appreciated that the turning rod 432 may be fixedly disposed at the middle portion of the pulling plate 431, so that the pulling plate 431 is rotatably connected through the fixedly disposed turning rod 432 and the turning hole 22 disposed at the side wall of the mounting bracket 2. The rotating rod 432 can also be fixedly arranged on the mounting frame 2, so that the traction plate 431 can be rotatably connected with the rotating rod 432 through a through hole arranged in the middle.

Meanwhile, the number of the traction plates 431 included in each traction member 43 may be set according to actual needs, and may be one, two, or more. For example, as shown in fig. 5 and 7, each traction member 431 includes two traction plates 431, and the two traction plates 431 are symmetrically disposed at two ends of the rotating rod 432, so as to ensure that the two traction plates 431 can maintain the force balance of the overall structure when a force is applied.

In this embodiment, as shown in fig. 5, 7 to 9, the installation position of the traction plate 431 along the rotation rod 432 can be divided into a first plate segment 4311 and a second plate segment 4312. A first plate segment 4311 and a second plate segment 4312 are offset.

It will be appreciated that, in order to ensure that the first plate section 4311 and the second plate section 4312 do not affect the installation of the first contact rod 31 and the second contact rod 32 after deflection, and to ensure that the traction plate 431 has a good stressed structure, the angle of deflection between the first plate section 4311 and the second plate section 4312 is in the range of 45 ° to 150 °; preferably, the angle between first plate segment 4311 and second plate segment 4312 is 90 ° or 120 °.

In this embodiment, as shown in fig. 6 to 9, the push-pull member 42 includes a guide rod 421 and a push-pull rod 423. The guide rod 421 is vertically and slidably mounted on a guide sleeve 23 arranged in the middle of the mounting frame 2; the push-pull rod 423 is vertically installed at the lower part of the guide rod 421 and is slidably connected with a connection groove 4310 arranged at the upper part of the traction plate 431; the upper portion of the guide bar 421 is provided with a magnetic portion 422, and the magnetic portion 422 can be used for magnetically matching with the electromagnet 41. The spring 44 is sleeved on the guide rod 421, the upper end of the spring 44 abuts against the magnetic part 422, and the lower end of the spring 44 abuts against the guide sleeve 23.

It will be appreciated that the distance between the two plates 431 on one of the traction members 43 is greater than the distance between the two plates 431 on the other traction member 43. When the two pulling members 43 are symmetrically mounted on the mounting bracket 2, the connecting grooves 4310 on the upper portions of the pulling plates 431 on the two pulling members 43 can be overlapped on the moving path of the push-pull rod 423, so that the push-pull rod 423 can be simultaneously connected with the connecting grooves 4310 on the upper portions of the pulling plates 431 on the two pulling members 43 in a sliding manner. The pulling grooves 4310 on the two pulling members 43 are symmetrically inclined to the axis of the guide bar 421.

The switching mechanism 4 works as follows:

(1) As shown in fig. 8, when the main power supply supplies power to the power load, the guide rod 421 receives the continuous repulsive force of the electromagnet 41 through the magnetic portion 422, so as to drive the push-pull rod 423 to be always engaged with the lower portion of the connection slot 4310, and at this time, the pull plates 431 on the two pull members 43 respectively keep the first contact rod 31 and the second contact rod 32 in the separated state.

(2) As shown in fig. 9, when the main power is turned off, the electromagnet 41 loses the repulsive force that repels the magnetic part 422; at this time, the guide bar 421 immediately moves vertically upward along the guide sleeve 23 by the return elastic force of the spring 44. During the upward movement of the guide rod 421, the push-pull rod 423 may vertically slide along the connection groove 4310 until the push-pull rod 423 slides to the upper portion of the connection groove 4310. In this process, the pulling plate 431 is driven by the push-pull rod 423 to rotate the rotating rod 432, so as to pull the first trolley bar 31 and the second trolley bar 32 to move towards each other until they contact each other.

(3) When the main power supply is powered on again, the electromagnet 41 is powered on to generate a repulsive force to the push-pull member 42 again, so as to drive the guide rod 421 to perform downward vertical sliding, so that the traction plate 431 pulls the first contact rod 31 and the second contact rod 32 to perform separation movement in the opposite direction during the downward sliding of the push-pull rod 423 along the connection groove 4310, until the state shown in fig. 8 is reached.

It can be understood that, in the above working process, the spring 44 is always in a compressed state, and the spring 44 is always located within an elastic limit, so as to ensure that the first contact rod 31 and the second contact rod 32 can be stably connected when in contact with each other, and meanwhile, it can also ensure that the switching process of the switching mechanism 4 is sufficiently fast.

In one embodiment of the present application, as shown in fig. 4, 8 and 9, the first trolley bar 31 and the second trolley bar 32 are both fixedly sleeved with a traction block 33, the traction block 33 is provided with a traction groove 330, and the traction groove 330 is slidably connected with the traction rod 433. Therefore, when the pulling plate 431 rotates around the rotating rod 432, the pulling plate 431 can pull the first trolley bar 31 and the second trolley bar 32 to move axially along the corresponding sliding sleeve 21 through the cooperation of the pulling plate 433 and the pulling groove 330.

It can be appreciated that, if the pulling plate 431 is directly coupled with the first trolley 31 and the second trolley 32, the installation of the first trolley 31 and the second trolley 32 is inconvenient, and the design difficulty of the first trolley 31 and the second trolley 32 may be increased. The first trolley 31 and the second trolley 32 are fixedly sleeved with the traction block 33 to realize connection with the traction plate 431, so that the problems can be effectively avoided.

In this embodiment, the end portions of the first contact rod 31 and the second contact rod 32 away from each other are provided with a connection portion 301, and the connection portions 301 are respectively used for connecting an electric load and a standby power supply; the ends of the first contact rod 31 and the second contact rod 32 close to each other are provided with a contact 302, and the first contact rod 31 and the second contact rod 32 can communicate the electrical load with the standby power supply through the contact of the contacts 302.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims

1. An automatic switching device for a standby power supply, comprising:

a mounting frame;

the first contact rod is arranged on one side of the mounting rack in a sliding mode and is used for being electrically connected with an electric load;

the second contact rod is arranged on the other side of the mounting rack in a sliding mode and is used for being electrically connected with a standby power supply; and

the switching mechanism is arranged on the mounting rack and is respectively connected with the first contact rod and the second contact rod;

when the main power supply is powered off, the switching mechanism is suitable for synchronously driving the first contact rod and the second contact rod to move in opposite directions to be in contact with each other, and then the standby power supply is communicated with the power load.

2. The automatic switching device for the standby power supply according to claim 1, wherein: the mounting rack is fixedly arranged through a mounting plate connected with the bottom; the first feeler lever and the second feeler lever are arranged on the mounting frame or the mounting plate in a sliding mode.

3. The automatic switching device for backup power supply according to claim 1, wherein said switching mechanism comprises:

the pair of traction components are symmetrically arranged at the lower part of the mounting rack and are respectively connected with the first feeler lever and the second feeler lever;

the push-pull component is vertically and elastically arranged in the middle of the mounting rack in a sliding manner, and the lower part of the push-pull component is respectively connected with the two traction components; and

the electromagnet is arranged at the top of the mounting rack, is suitable for being electrically connected with a main power supply and is suitable for being magnetically matched with the push-pull component;

when the main power supply is powered off, the electromagnet loses repulsion force on the push-pull component, so that the push-pull component drives the traction component to drive the first contact rod and the second contact rod to be contacted through reset elasticity.

4. The automatic switching device for backup power according to claim 3, wherein said traction means comprises:

a rotating rod; and

the middle part of the traction plate is rotatably connected with the mounting frame through the rotating rod, the upper part of the traction plate is suitable for being connected with the push-pull component, and the lower part of the traction plate is suitable for being connected with the first contact rod or the second contact rod;

when the push-pull component moves vertically, the push-pull component is suitable for driving the traction plate to rotate around the axial direction of the rotating rod, and then the first feeler lever and the second feeler lever are driven to move oppositely or reversely.

5. The automatic switching device for the standby power supply according to claim 4, wherein: the traction plate is divided into a first plate section and a second plate section along the installation position of the rotating rod; the included angle between the first plate section and the second plate section is 45-150 degrees.

6. The automatic switching device for backup power of claim 5, wherein: the included angle between the first plate section and the second plate section is 90 degrees or 120 degrees.

7. The automatic switching device for backup power according to claim 4, wherein said push-pull means comprises:

the guide rod is vertically and slidably mounted in the middle of the mounting rack; the upper part of the guide rod is provided with a magnetic part which is suitable for being in magnetic fit with the electromagnet; the guide rod is sleeved with a spring, the upper end of the spring is abutted to the magnetic part, the lower end of the spring is abutted to the mounting rack, and

and the push-pull rod is vertically arranged at the lower part of the guide rod and is in sliding connection with a connecting groove arranged at the upper part of the traction plate.

8. The automatic switching device for the backup power supply according to any one of claims 1 to 7, wherein: sliding sleeves are symmetrically arranged on two sides of the mounting rack, and the first feeler lever and the second feeler lever are correspondingly slidably mounted on the sliding sleeves.

9. The automatic switching device for backup power of claim 8, wherein: the end parts, far away from the first contact rod and the second contact rod, of the first contact rod and the second contact rod are respectively provided with a connecting part, and the connecting parts are respectively used for connecting an electric load and a standby power supply; the first feeler lever and the second feeler lever are provided with contacts at the ends close to each other, and the first feeler lever and the second feeler lever are suitable for communicating an electric load with a standby power supply through the contact of the contacts.

10. The automatic switching device for the standby power supply according to claim 4, wherein: traction blocks are fixedly sleeved on the first feeler lever and the second feeler lever; and the traction block is provided with a traction groove, and the traction groove is in sliding connection with a traction rod arranged at the lower part of the traction plate.