CN109449039B

CN109449039B - Load switch

Info

Publication number: CN109449039B
Application number: CN201811416471.5A
Authority: CN
Inventors: 闫石; 叶昊; 张斌; 陈懿; 杨健
Original assignee: Shenzhen Power Supply Bureau Co Ltd
Current assignee: Shenzhen Power Supply Bureau Co Ltd
Priority date: 2018-11-26
Filing date: 2018-11-26
Publication date: 2024-04-26
Anticipated expiration: 2038-11-26
Also published as: CN109449039A

Abstract

The application provides a load switch. The load switch comprises a shell, a fixing mechanism, a switch interface and an operating mechanism. The fixing mechanism is arranged on the shell and used for fixing the load switch on the outer surface of the object to be installed. For example, the fixing mechanism can fix the load switch on a wall surface, so that the purpose of operating the load switch on a narrow site is achieved. The switch interface is arranged on the shell and is used for realizing the electric connection of the load switch with the fault circuit and the bypass respectively. The switch interface is provided with a waterproof cover. The waterproof cover is used for preventing the switch interface from being damaged by moisture. The operating mechanism is arranged on the outer side surface of the shell and used for controlling the on-off of the load switch.

Description

Load switch

Technical Field

The present disclosure relates to electronic devices, and particularly to a load switch.

Background

When the cable line encounters a fault, a bypass operation method is adopted to bypass and shunt so as to continuously supply power to a user in order to reduce the power failure time. When the bypass operation method is implemented, a load switch is needed to bypass and shunt equipment to be detected or constructed.

The traditional load switch has large volume, needs to occupy the ground independently and is difficult to operate in a narrow field. Meanwhile, if a certain part of the load switch is wetted or water enters, the load switch can be damaged, so that the problem of line safety is caused.

Disclosure of Invention

Based on the above, it is necessary to provide a load switch for solving the problems that the conventional load switch is difficult to operate in a narrow field and is vulnerable to moisture.

A load switch includes:

A housing;

the fixing mechanism is arranged on the shell and used for fixing the load switch on the outer surface of the object to be installed;

The switch interface is arranged on the shell and used for realizing that the load switch is respectively and electrically connected with the fault circuit and the bypass, and is provided with a waterproof cover which is used for preventing the switch interface from being damaged by moisture; and

And the operating mechanism is arranged on the outer side surface of the shell and used for controlling the on-off of the load switch.

In one embodiment, the securing mechanism includes:

the wall hanging structure is fixedly arranged on the outer side surface of the shell, which is far away from the operating mechanism.

In one embodiment, the wall-hung structure includes:

And the wall hanging plate is in threaded connection with the outer surface of the object to be installed.

In one embodiment, the securing mechanism further comprises:

the load switch support is fixedly arranged on the outer side face of the shell, and when the load switch is placed on the ground, the load switch support is used for supporting the load switch.

In one embodiment, the load switch bracket is an angle bracket, and the load switch bracket is received in the housing during transportation or when the wall-hung structure is used for fixing.

In one embodiment, the waterproof cover includes:

The insulating waterproof layer is arranged on the inner side surface of the waterproof cover, and when the waterproof cover covers the switch interface, the insulating sealing layer tightly wraps the switch interface.

In one embodiment, the insulating waterproof layer is made of one or more of a barrier polymer material, butyl rubber and polyurethane.

In one embodiment, the operating mechanism includes:

and the electric operation assembly is fixedly arranged on the shell and used for automatically switching on and off the load switch.

In one embodiment, the electrically operated assembly comprises:

The motor is fixedly arranged on one side, far away from the fixing mechanism, of the shell;

the driving gear is electrically connected with the motor, and the motor provides power for the rotation of the driving gear;

The transmission gear is in driving connection with the driving gear;

The torque gear is in driving connection with the transmission gear; and

And the controller is connected with the electric operation assembly and used for controlling the forward rotation or the reverse rotation of the motor so as to control the on-off state of the load switch.

In one embodiment, the drive gear includes:

the primary speed change gear is in driving connection with the driving gear; and

The secondary speed change gear is respectively connected with the primary speed change gear and the moment gear in a driving way.

Drawings

FIG. 1 is a schematic diagram of a load switch according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a load switch according to another embodiment of the present application;

FIG. 3 is a schematic diagram of a load switch interface according to an embodiment of the present application;

FIG. 4 is an exploded view of a load switch provided in one embodiment of the present application;

fig. 5 is an enlarged view of a portion of the operating mechanism of fig. 4.

Description of the main element reference numerals

Load switch 100

Housing 10

Fixing mechanism 20

Wall hanging structure 21

Wall hanging plate 211

Load switch support 22

Switch interface 30

Waterproof cover 31

Insulating waterproof layer 311

Operating mechanism 40

Front axle support plate 401

Axis rear support plate 402

Front fixing plate 403

Rear fixing plate 404

Gear fixing block 405

Upper baffle 406

Intermediate fixing lever 407

Travel counter 408

Gear sheath 409

Electrically operated component 41

Motor 410

Drive gear 420

Transmission gear 430

Primary speed change gear 431

Two-stage speed change gear 432

Moment gear 440

Controller 450

Gear shaft 460

Manual operation handle 42

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the following embodiments are used to further describe a load switch of the present application in detail by referring to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

Referring to fig. 1, the present application provides a load switch 100. The load switch 100 includes a housing 10, a securing mechanism 20, a switch interface 30, and an operating mechanism 40.

The shape of the housing 10 is not limited. In one embodiment, the housing 10 is rectangular in shape. The material of the housing 10 is not limited as long as insulation is achieved. The fixing mechanism 20 is disposed on the rear side or the bottom of the housing 10. The fixing mechanism 20 is used for fixing the load switch 100 to the outer surface of the object to be mounted. For example, when the load switch 100 is required to be operated in a narrow space, the load switch 100 may be fixedly suspended on the wall surface by the fixing mechanism 20, so that a worker can conveniently operate in the narrow space. When the load switch 100 is operated in a sufficiently wide place, the load switch may be fixed to a bottom surface or other horizontal surface by the fixing mechanism 20. The switch interface 30 is provided in the housing 10. In one embodiment, the load switch interfaces 30 are symmetrically disposed on both sides of the load switch 100. The switch interface 30 is used to implement the load switch 100 to be electrically connected to a fault circuit and a bypass, respectively. The switch interface 30 is provided with a waterproof cover 31. The waterproof cover 31 can isolate the switch interface 30 from the outside air in a plug-in or threaded manner. The waterproof cover 31 is used to prevent the switch interface 30 from being damaged by moisture. The operating mechanism 40 is disposed on the outer side surface of the housing 10, and is used for controlling the on-off of the load switch 100.

The present application provides a load switch 100. The load switch 100 includes a housing 10, a securing mechanism 20, a switch interface 30, and an operating mechanism 40. The fixing mechanism 20 is disposed on the housing 10, and is used for fixing the load switch 100 to an outer surface of an object to be mounted. For example, the fixing mechanism 20 may fix the load switch 100 to a wall surface, thereby achieving the purpose of performing the operation of the load switch 100 in a narrow site. The switch interface 30 is disposed in the housing 10, and is used for electrically connecting the load switch 100 with a fault circuit and a bypass, respectively. The switch interface 30 is provided with a waterproof cover 31. The waterproof cover 31 is used to prevent the switch interface 30 from being damaged by moisture. The operating mechanism 40 is disposed on the outer side surface of the housing 10, and is used for controlling the on-off of the load switch 100.

Referring to fig. 2, in one embodiment, the fixing mechanism 20 includes a wall-hung structure 21 and a load switch bracket 22.

The wall-hung structure 21 is fixedly disposed on an outer side surface of the housing 10 away from the operating mechanism 40. The wall-hung structure 21 includes wall-hung panels 211. The material of the wall-hanging plate 211 is not limited, as long as the load switch 100 can be fixed to the surface of the object to be mounted. In one embodiment, the wall panel is made of a metal material. The hanging wall plate 211 is in threaded connection with the outer surface of the object to be installed. In one embodiment, when the hanging wall plate 211 is in threaded connection with the outer surface of the object to be installed, a screw hole is formed in the hanging wall plate, and a bolt is fixedly connected with the outer surface of the object to be installed through the screw hole. In another embodiment, the casing 10 is provided with a plurality of wall-hanging boards 211, and an accommodating space (not shown in the figure) is formed between the wall-hanging boards 211 and the casing 10. And the outer surface of the object to be installed is provided with an installation frame. The mounting frame penetrates through the accommodating space to fix the load switch on the surface of the object to be mounted. The load switch bracket 22 is fixedly disposed on the outer side surface of the housing 10. In one embodiment, the load switch bracket 22 is disposed at the bottom of the housing 10. The load switch bracket 22 is an angle bracket. The load switch bracket 22 is used for supporting the load switch 100 when the load switch 100 is placed on the ground. The load switch 100 is stored in the housing 10 while being transported or while being fixed by the wall-hung structure 21, and the load switch holder 22 is stored in the housing.

In this embodiment, the fixing mechanism 20 includes a wall-hanging structure 21 and a load switch bracket 22. When the load switch 100 is required to work in a narrow environment, the load switch 100 can be fixed on a wall surface through the wall-hung structure 21, so that the working space of the load switch 100 is saved. At this time, the load switch bracket 22 is accommodated in the housing 10. When the load switch 100 is operated in a spacious environment, the load switch 100 does not need to be hung on a wall surface for convenience of operation. The load switch 100 uses the load switch bracket 22 to fixedly place the load switch 100 on a bottom surface or a working plane. The wall-hung structure 21 and the load switch bracket 22 realize the problem of fixed installation of the load switch 100 in a complex environment, and avoid dangerous situations.

Referring to fig. 3, in one embodiment, the waterproof cover 31 includes an insulating waterproof layer 311.

The insulating waterproof layer 311 is disposed on the inner side surface of the waterproof cover 31. The insulating waterproof layer 311 covers the entire inner side surface of the waterproof cover 31 in one embodiment. In another embodiment, the insulating waterproof layer 311 covers the inner side surface of the waterproof cover 31 near the opening. When the waterproof cover 31 covers the switch interface 30, the insulating sealing layer 311 tightly wraps the switch interface 30.

In this embodiment, the waterproof cover 31 includes an insulating waterproof layer 311. The insulating waterproof layer 311 covers the entire inner side surface of the waterproof cover 31 or the insulating waterproof layer 311 covers the inner side surface of the waterproof cover 31 close to the opening. When the waterproof cover 31 is covered with the switch interface 30 by means of plugging or screwing, the insulating sealing layer 311 tightly wraps the switch interface 30. The switch interface 30 is prevented from coming into contact with the outside humid air. The insulating seal 311 is used to protect the switch interface 30 from moisture damage.

Please refer to fig. 4 and 5, wherein fig. 5 is an enlarged view of a portion of the operating mechanism 40 in fig. 4. In one embodiment, the operating mechanism 40 includes an electrically operated component 41.

The electric operation assembly 41 is fixedly arranged on the housing 10, and is used for automatically switching on and off the load switch 100. The electric operation assembly 41 includes a front shaft support plate 401, a rear shaft support plate 402, a front fixing plate 403, a rear fixing plate 404, an upper baffle 406, an intermediate fixing lever 407, a travel switch seat 408, a gear housing 409, a motor 410, a driving gear 420, a transmission gear 430, a torque gear 440, a controller 450, and a gear shaft 460.

The motor 410 is fixedly disposed on a side of the housing 10 remote from the fixing mechanism 20. Specifically, the housing 10 is disposed between the motor 410 and the load switch bracket 22. The upper baffle 406 is fixedly arranged above the motor 410 to protect the motor 410. The motor 410 may be mounted above the housing 10 in a variety of ways. Such as welding, riveting, etc.

The driving gear 420 is electrically connected to the motor 410 through the gear shaft 460. The motor 410 powers the rotation of the drive gear. The transfer gear 430 is in driving connection with the drive gear 420. In one embodiment, the transfer gear 430 includes a primary ratio gear 431 and a secondary ratio gear 432. The primary speed gear 431 is in driving connection with the driving gear 420. The secondary ratio gear 432 is drivingly connected to the primary ratio gear 431 and the torque gear 440, respectively. The torque gear 440 is in driving connection with the transfer gear 430. The motor 410, the driving gear 420, the driving gear 430 and the torque gear 440 are sequentially connected in a driving manner to form a driving path. The torque gear 440 is in driving connection with a brake (not shown) of the load switch 100, so as to control the on-off state of the load switch 100.

A first accommodation space is formed between the shaft front support plate 401 and the shaft rear support plate 402. The first receiving space is used for placing the driving gear 420 and the primary speed gear 431. The rear shaft support plate 402 is disposed between the driving gear 402 and the motor 410. The shaft rear support plate 402 is provided with a first through hole. The gear shaft 460 is in driving connection with the driving gear 402 and the motor 410, respectively, through the first through hole. The shaft front support plate 401 is provided with a second through hole. The primary speed changing wheel 431 and the secondary speed changing wheel 432 are connected through a driving shaft. The driving shaft passes through the second through hole and is respectively in driving connection with the primary speed changing wheel 431 and the secondary speed changing wheel 432. The secondary ratio gear 402 is drivingly connected to the torque gear 440 via the gear sleeve 409.

The controller 450 is connected to the electrically operated assembly 41. The controller 450 is used for controlling the forward rotation or the reverse rotation of the motor 410 to control the on-off state of the load switch 100. The controller 450 may be an integrated control circuit or a logic control circuit, etc. The controller 450 can control the motor 410 to rotate forward, reverse, stop, etc. In one embodiment, a wireless transmission device or a network communication device may be loaded in the controller 450, so as to remotely control the electric operation component 41 to switch the load switch 100 on or off.

When it is desired to operate the load switch 100, the electrically operated module 41 may be operated by remote control or by pressing an electrically operated button. The motor 410 operates to drive the driving gear 420 to rotate, and converts the high rotation speed into a large torque step by step through the primary speed change gear 431 and the secondary speed change gear 432 to drive the torque gear 440, thereby realizing the opening and closing of the brake and further realizing the on-off of the load switch 100.

The front fixing plate 403 and the rear fixing plate 404 are fixedly disposed on the front and rear sides of the housing 10, respectively. The front fixing plate 403 and the rear fixing plate 404 are connected by the intermediate fixing rod 407. The front fixing plate 403 and the rear fixing plate 404 are used to fix the operating mechanism 40. The stroke counter 408 is fixedly disposed on the front fixing plate 403. The travel counter 408 is used for counting the operation times of the load switch 100, so as to monitor the service life of the load switch 100, and avoid accidents caused by the operation of the load switch 100 beyond the age.

In this embodiment, the operating mechanism 40 includes an electrically operated component 41. The on-off state of the load switch 100 is controlled by a transmission path formed by sequentially driving and connecting the motor 410, the driving gear 420, the transmission gear 430 and the torque gear 440 in the electric operation assembly 41. And a wireless transmission device or a network communication device can be loaded in the controller 450, so as to realize remote control of the electric operation component 41 to switch on and off the load switch 100. The remote control operation mode avoids unexpected results caused by the fact that workers are on site when accidents occur in the line. The electric operation assembly 41 replaces the traditional manual operation mode of the load switch 100 with the electric operation mode of the load switch 100, so that the operation of switching on and off the load switch 100 is simpler, more convenient and more intelligent.

In one embodiment, the operating mechanism 40 further includes a manual operating handle 42 and a gear fixing block 405.

The manual operating handle 42 is fixedly connected with the torque gear 440. The gear fixing block 405 locks the torque gear 440 to the manual operation handle 42. When the electric operation assembly 41 of the load switch 100 is damaged or is not electrified and cannot operate, a worker can rotate the moment gear 440 by rotating the manual operation handle 42, so that the brake breaker connected with the moment gear 440 can be used for switching on and off the load switch 100.

In this embodiment, the operating mechanism 40 further includes a manual operating handle 42 and a gear fixing block 405. The gear fixing block 405 locks the torque gear 440 to the manual operation handle 42. When the electric operation assembly 41 of the load switch 100 is damaged or is not energized and cannot be operated, the operation handle 42 has a certain length, and the operation handle is matched with the moment gear 440 to reduce a certain burden for a worker.

When in bypass operation, the bypass equipment is connected into a circuit, so that the bypass equipment and equipment to be overhauled are operated in parallel. And then the equipment to be overhauled is separated from the line for operation. At which point power continues to be supplied to the user by the bypass device. And after the equipment to be overhauled is overhauled, putting the equipment to be overhauled into the line again, and dismantling the bypass equipment.

The bypass operation comprises the following specific steps:

s100, observing the condition of a maintenance line, constructing a bypass line, and installing a load switch 100.

And S200, sequentially connecting a bypass terminal connector, a bypass middle connector and a T-shaped middle connector in the bypass line to form a bypass drainage line.

S300, the line of the fault maintenance section is powered off, the built bypass drainage line is connected to two sides of the fault maintenance section, and then the drainage line is connected to the user branch line from the T-shaped connector.

S400, replacing the drop-out fuse at the fault maintenance section, switching on the power supply, and opening the load switch 100.

And S500, after the overhaul is completed, closing the load switch 100, withdrawing the bypass operation line, and completing the operation.

The load switch 100 is used in cooperation with the drop-out fuse in the bypass operation to isolate the section to be overhauled and continuously supplies power to the user through the bypass equipment, so that the purposes of reducing the power failure time and simplifying the complexity of the operation are achieved.

The load switch 100 includes a ground hole, a switch interface 30, an anti-misoperation lock, an electric operation component 41, and a manual operation handle 42. The use method of the load switch 100 comprises the following steps:

And S10, fixing the load switch 100 on the surface of the belt fixture.

S20, grounding the grounding hole; the cable termination and insulation within the switch interface 30 are cleaned using a cleaning paper and a silicone grease is applied.

And S30, connecting a cable terminal to the switch interface 30 according to the corresponding phase color of the cable, and confirming whether the cable is firmly connected with the switch interface 30 in an outward pulling mode.

S40, pulling the anti-misoperation lock to an "unlocked" state, then conducting the load switch 100 by using the electric operation assembly 41 or the manual operation handle 42, and then pulling the anti-misoperation lock to a "locked" state.

When the load switch 100 is turned off after the maintenance work is completed, the anti-misoperation lock is pulled to an unlocking state. The load switch 100 is then disconnected using the electrically operated assembly 41 or the manually operated handle 42, and the anti-misoperation lock is then pulled to a "lockout" state.

The use of the cleaning paper to clean the cable terminal and the insulation part in the switch interface 30 and the application of the insulating silicone grease effectively prevents the occurrence of leakage in the process of connecting the load switch 100 with the cable terminal. The anti-misoperation lock is unlocked or locked, so that accidents in a circuit are avoided, and unexpected results are generated.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the patent. It should be noted that variations and modifications could be made by those skilled in the art without departing from the present concepts, which would fall within the scope of the present application. Accordingly, the protection scope of this patent shall be subject to the appended claims.

Claims

1. A load switch (100), characterized by comprising:

A housing (10);

the fixing mechanism (20) is arranged on the shell (10) and is used for fixing the load switch (100) on the outer surface of an object to be installed;

Switch interface (30), set up in casing (10) is used for realizing load switch (100) are connected with fault circuit and bypass electricity respectively, switch interface (30) are equipped with waterproof lid (31), waterproof lid (31) include: the insulating waterproof layer (311) is arranged on the inner side surface of the waterproof cover (31), and when the waterproof cover (31) covers the switch interface (30), the switch interface (30) is wrapped by the insulating waterproof layer (311); the waterproof cover (31) is used for preventing the switch interface (30) from being damaged by moisture; the waterproof cover (31) is covered with the switch interface (30) in a plugging mode or a threaded connection mode; and

The operating mechanism (40) is arranged on the outer side surface of the shell (10) and used for controlling the on-off of the load switch (100), and the operating mechanism (40) comprises a motor (410) and is fixedly arranged on one side, far away from the fixing mechanism (20), of the shell (10).

2. The load switch (100) of claim 1, wherein the securing mechanism (20) comprises:

The wall-hung structure (21) is fixedly arranged on the outer side surface of the shell (10) far away from the operating mechanism (40).

3. The load switch (100) of claim 2, wherein the wall-mounted structure (21) comprises:

and the hanging wall plate (211) is in threaded connection with the outer surface of the object to be installed.

4. The load switch (100) of claim 2, wherein the securing mechanism (20) further comprises:

the load switch support (22) is fixedly arranged on the outer side face of the shell (10), and when the load switch (100) is placed on the ground, the load switch support (22) is used for supporting the load switch (100).

5. The load switch (100) of claim 4, wherein the load switch bracket (22) is an angle bracket, and wherein the load switch bracket (22) is received in the housing (10) during transportation or when the load switch (100) is secured using the wall-hung structure (21).

6. The load switch (100) of claim 2, wherein the wall-mounted structure (21) comprises:

and an accommodating space is formed between the wall hanging plate (211) and the shell (10), and the accommodating space is used for being penetrated by the mounting frame arranged on the outer surface of the object to be mounted.

7. The load switch (100) according to claim 1, wherein the insulating waterproof layer (311) is made of one or more of butyl rubber and polyurethane.

8. The load switch (100) of claim 1, wherein the operating mechanism (40) comprises:

and the electric operation assembly (41) is fixedly arranged on the shell (10) and is used for automatically switching on and off the load switch (100).

9. The load switch (100) of claim 8, wherein the electrically operated assembly (41) comprises:

A drive gear (420) electrically connected to the motor (410), the motor (410) powering the rotation of the drive gear;

A transmission gear (430) in driving connection with the drive gear (420);

A torque gear (440) drivingly connected to the drive gear (430); and

And the controller (450) is connected with the electric operation assembly (41) and is used for controlling the forward rotation or the reverse rotation of the motor (410) so as to control the on-off state of the load switch (100).

10. The load switch (100) of claim 9, wherein the drive gear (430) comprises:

A primary speed change gear (431) in driving connection with the drive gear (420); and

And a secondary speed change gear (432) which is respectively connected with the primary speed change gear (431) and the torque gear (440) in a driving way.