CN113690082A

CN113690082A - Interlocking device for preventing false switching-on

Info

Publication number: CN113690082A
Application number: CN202110976094.6A
Authority: CN
Inventors: 袁国平; 蔡衍江; 程福文; 张舒
Original assignee: Guizhou Changzheng Electric Assembly Co ltd
Current assignee: Guizhou Changzheng Electric Assembly Co ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2021-11-23

Abstract

The application discloses an interlocking device for preventing false switching-on in the technical field of power distribution cabinet protection devices, which comprises a circuit breaker, wherein the circuit breaker comprises a shell, the shell is also rotationally connected with a V-shaped handle, the handle is provided with a through groove, the shell is also rotationally connected with a driving gear, the driving gear is coaxially and fixedly connected with a linkage pin positioned in the through groove, and the shell is horizontally and slidably connected with a rack meshed with the driving gear; the utility model discloses a spacing section of thick bamboo of shell fixedly connected with, rack fixedly connected with stopper, a spacing section of thick bamboo is equipped with the connecting hole, the vertical sliding connection of connecting hole has and interlocking piece, interlocking piece fixedly connected with connecting rod, the coaxial rotation in periphery of a spacing section of thick bamboo is connected with the sleeve, the shell is equipped with and is used for driving sleeve pivoted motor, telescopic periphery be equipped with the arc piece of connecting rod bottom butt, arc piece thickness is crescent along anticlockwise. In the scheme, the interlocking block can block closing, so that safety accidents are avoided.

Description

Interlocking device for preventing false switching-on

Technical Field

The invention relates to the technical field of power distribution cabinet protection devices, in particular to an interlocking device for preventing false switching-on.

Background

The power distribution cabinet, the lighting power distribution cabinet and the metering cabinet are final-stage equipment of a power distribution system, and the power distribution cabinet is a general name of a motor control center. The power distribution cabinet is used in the occasions with dispersed loads and less loops. The switch board is integrated with a breaker, the breaker is provided with a handle, and the switch-on and switch-off of the breaker are realized through rotating the handle.

However, when the power distribution cabinet is overhauled, the circuit breaker is switched off to cut off the power of the whole power distribution cabinet, so that the life safety of maintainers is guaranteed. In order to prevent the circuit breaker from being opened by mistake to cause safety accidents, the device capable of locking the handle after the circuit breaker is opened is designed, and the occurrence of electric shock accidents can be avoided.

Disclosure of Invention

The invention aims to provide an interlocking device for preventing false switching-on, and provides an interlocking device capable of locking a handle of a circuit breaker, so that safety accidents can be avoided.

In order to achieve the purpose, the invention provides the following technical scheme: an interlocking device for preventing false switching-on comprises a circuit breaker, wherein the circuit breaker comprises a shell, the shell is provided with an operation opening, the shell is also rotatably connected with a V-shaped handle, one end of the handle extends out of the operation opening, the other end of the handle is provided with a through groove, the shell is also rotatably connected with a driving gear, the driving gear is coaxially and fixedly connected with a linkage pin positioned in the through groove, and the shell is horizontally and slidably connected with a rack meshed with the driving gear; the utility model discloses a spacing barrel of shell fixedly connected with, the one end of rack is passed spacing barrel and the curved stopper of fixedly connected with, spacing barrel is equipped with the connecting hole, the vertical sliding connection of connecting hole has the interlocking piece that uses with the stopper cooperation, one side that the interlocking piece is close to the stopper is equipped with the inclined plane, one side that the stopper was kept away from to the interlocking piece is equipped with vertical face, interlocking piece fixedly connected with connecting rod, the coaxial rotation of periphery of spacing barrel is connected with the sleeve, the shell is equipped with and is used for driving sleeve pivoted motor, telescopic periphery is equipped with the arc piece with connecting rod bottom butt, arc piece thickness is crescent along counter-clockwise.

The working principle of the invention is as follows: this scheme handle rotates and makes circuit breaker separating brake, because the handle is equipped with logical groove, and drive gear fixedly connected with is located logical inslot's interlocking round pin, and when the handle rotated, the lateral wall that leads to the groove made drive gear rotate through the extrusion interlocking round pin. Because the shell is horizontally connected with a rack which is meshed with the driving gear in a sliding way, the driving gear drives the rack to slide, the rack drives the limit block positioned in the limit cylinder to slide, the limit block is arc-shaped, the interlocking block is vertically connected with the connecting hole in a sliding way, and one side of the interlocking block, which is close to the limit block, is provided with an inclined surface, so that the inclined surface can be extruded when the limit block moves, the interlocking block vertically moves upwards, after the limit block is separated from the interlocking block, the interlocking block automatically falls into the limit cylinder through the connecting hole due to gravity, even if the interlocking block is closed at the moment, the limit block is blocked by the vertical surface of the interlocking block, the rack, the driving gear and the handle cannot move, and further the rotating shaft cannot rotate, namely the handle cannot be rotated to close the circuit breaker, and the interlocking purpose is achieved,

when needs combined floodgate, rotate through motor drive sleeve this moment, the sleeve drives the arc piece clockwise rotation, and arc piece thickness is crescent along anticlockwise, and arc piece and connecting rod butt, therefore the arc piece upwards extrudees the connecting rod, and the connecting rod drives the interlocking piece and upwards rises and break away from the stopper, and the stopper does not receive blockking of interlocking piece like this, and the reverse rotation handle makes the circuit breaker combined floodgate.

Furthermore, a spring is fixedly connected between the connecting rod and the limiting cylinder. When the limiting block or the arc-shaped block jacks up the interlocking block, the spring stretches, and when the limiting block or the arc-shaped block is separated from the interlocking block, the spring returns to enable the interlocking block to return to the initial position.

Further, the shell is provided with an observation hole. The observation hole is convenient for observing the condition in the shell and is convenient for timely maintenance.

Further, the shell is provided with anti-skid grains. When the circuit breaker is installed, the anti-skid lines can play an anti-skid role.

Further, an anti-oxidation layer is coated on the surface of the shell.

Further, the interlocking blocks are symmetrically arranged along the axis of the limiting cylinder. The movement of the limiting block is blocked through the interlocking blocks on the two sides, so that the locking effect is better.

Drawings

FIG. 1 is a schematic structural diagram of an interlocking device for preventing false switching-on when switching-on;

FIG. 2 is a schematic view of the internal structure of the limiting cylinder in FIG. 1;

FIG. 3 is a schematic view of the interlock of FIG. 2;

FIG. 4 is a schematic view of the interlocking block of FIG. 2 when the arc block is lifted;

fig. 5 is a left side view of the arcuate block of fig. 1.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a driving gear 1, a motor 2, a sleeve 3, a driven gear 4, a connecting rod 5, an interlocking block 6, a limiting cylinder 7, a linkage pin 8, a through groove 9, a handle 10, a driving gear 11, a rack 12, a shell 13, an arc-shaped block 14 and a limiting block 15.

In the following statements, all the directional terms such as "left", "right", "upper", "lower", etc. are based on the directions shown in the drawings, and in practice, the corresponding structures do not affect the implementation of the schemes under the condition that the relative positions are kept unchanged by the same directional changes based on the directions.

Example (b): referring to fig. 1 and 2, the interlocking device for preventing false switching-on comprises a circuit breaker, wherein the circuit breaker comprises a shell 13, the shell 13 is provided with an operation opening, the shell 13 is further rotatably connected with a V-shaped handle 10, one end of the handle 10 extends out of the operation opening, the other end of the handle 10 is provided with a through groove 9, the shell 13 is further rotatably connected with a driving gear 11, the driving gear 11 is coaxially and fixedly connected with a linkage pin 8 positioned in the through groove 9, and the shell 13 is horizontally and slidably connected with a rack 12 meshed with the driving gear 11; spacing section of thick bamboo 7 of shell 13 fixedly connected with, spacing section of thick bamboo 7 and the curved stopper 15 of fixedly connected with are passed to the one end of rack 12, spacing section of thick bamboo 7 is equipped with the connecting hole, the vertical sliding connection of connecting hole has interlocking piece 6 with stopper 15 cooperation use, one side that interlocking piece 6 is close to stopper 15 is equipped with the inclined plane, one side that stopper 15 was kept away from to interlocking piece 6 is equipped with vertical face, interlocking piece 6 fixedly connected with connecting rod 5, the coaxial rotation of periphery of spacing section of thick bamboo 7 is connected with sleeve 3, shell 13 is fixed and is equipped with motor 2, motor 2 rotates and is connected with driving gear 1, sleeve 3 is fixed cup jointed the driven gear 4 with driving gear 1 meshing, as figure 5, the periphery of sleeve 3 is still fixed be equipped with the arc piece 14 with connecting rod 5 bottom butt, 14 thickness of arc piece is crescent along the counter-clockwise.

As shown in figure 3, the handle 10 rotates to enable the breaker to be opened, due to the fact that the handle 10 is provided with the through groove 9, the driving gear 11 is fixedly connected with the linkage pin 8 located in the through groove 9, and when the handle 10 rotates, the side wall of the through groove 9 enables the driving gear 11 to rotate by extruding the linkage pin 8. Because the shell 13 is horizontally connected with the rack 12 meshed with the driving gear 11 in a sliding manner, the driving gear 11 drives the rack 12 to slide, the rack 12 drives the limit block 15 positioned in the limit cylinder 7 to slide, the limit block 15 is arc-shaped, the interlocking block 6 is vertically connected with the connecting hole in a sliding manner, and one side of the interlocking block 6 close to the limit block 15 is provided with an inclined surface, so that the inclined surface can be extruded when the limit block 15 moves, the interlocking block 6 vertically moves upwards, after the limit block 15 is separated from the interlocking block 6, the interlocking block 6 automatically falls into the limit cylinder 7 through the connecting hole due to gravity, because one side of the interlocking block 6 far away from the limit block 15 is a vertical surface, even if the breaker is switched on at the moment, the limit block 15 is blocked by the vertical surface of the interlocking block 6, the rack 12, the driving gear 11 and the handle 10 cannot move, and further the rotating shaft cannot rotate, namely the handle 10 is not rotated to switch on the breaker, namely, the purpose of interlocking is achieved,

as shown in fig. 4, when needing to close a floodgate, pass through motor 2 this moment, driving gear 1 and driven gear 4 drive sleeve 3 rotate, sleeve 3 drives arc piece 14 clockwise rotation, 14 thickness of arc piece is crescent along the counter-clockwise, and

arc piece

14 and 5 butts of connecting rod, consequently arc piece 14 upwards extrudees connecting rod 5, connecting rod 5 drives interlocking piece 6 and upwards rises and breaks away from stopper 15, stopper 15 does not receive interlocking piece 6's the blockking like this, reverse rotation handle 10 makes the circuit breaker close a floodgate.

It should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the structure of the invention, and these should be construed as the scope of the invention, which will not affect the effect of the invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides a prevent mistake combined floodgate interlock, includes the circuit breaker, the circuit breaker includes the shell, the shell is equipped with the operation mouth, the shell still rotates the handle that is connected with the V font, outside the operation mouth was stretched out to the one end of handle, its characterized in that: a through groove is formed in the other end of the handle, the shell is further rotatably connected with a driving gear, the driving gear is coaxially and fixedly connected with a linkage pin positioned in the through groove, and the shell is horizontally and slidably connected with a rack meshed with the driving gear; the utility model discloses a spacing barrel of shell fixedly connected with, the one end of rack is passed spacing barrel and the curved stopper of fixedly connected with, spacing barrel is equipped with the connecting hole, the vertical sliding connection of connecting hole has the interlocking piece that uses with the stopper cooperation, one side that the interlocking piece is close to the stopper is equipped with the inclined plane, one side that the stopper was kept away from to the interlocking piece is equipped with vertical face, interlocking piece fixedly connected with connecting rod, the coaxial rotation of periphery of spacing barrel is connected with the sleeve, the shell is equipped with and is used for driving sleeve pivoted motor, telescopic periphery is equipped with the arc piece with connecting rod bottom butt, arc piece thickness is crescent along counter-clockwise.

2. The anti-false switching-on interlock device according to claim 1, characterized in that: and a spring is fixedly connected between the connecting rod and the limiting cylinder.

3. The anti-false switching-on interlock device according to claim 2, characterized in that: the shell is provided with an observation hole.

4. The anti-false switching-on interlock device according to claim 3, characterized in that: the shell is provided with anti-skid grains.

5. The anti-false switching-on interlock device according to claim 4, characterized in that: and an anti-oxidation layer is coated on the surface of the shell.

6. The anti-false switching-on interlock device according to claim 5, characterized in that: the interlocking blocks are symmetrically arranged along the axis of the limiting cylinder.