CN210837545U - A kind of double safety circuit breaker lower isolation hard interlocking device - Google Patents

Abstract

The utility model relates to the technical field of electrical cabinet locks, in particular to a double safety circuit breaker lower isolation hard interlocking device. It includes a main knife, a ground knife, a main knife lock plate, a ground knife lock plate, a mounting plate, a door control mechanism and a safety mechanism; the safety mechanism is connected with the ground knife, and extends into the cabinet door as the ground knife rotates; The main knife and the ground knife are both fixed on the mounting plate; the main knife locking plate is slidably connected with the mounting plate and is blocked on the end of the main knife; the ground knife locking plate and the mounting plate The sliding connection is stuck on the end of the ground knife; the main knife lock plate is fixedly connected with the ground knife lock plate; the door control mechanism is arranged at the bottom of the ground knife lock plate, and is connected with the cabinet door to be controlled, It is used to control the movement of the ground knife lock plate according to the opening and closing of the cabinet door. The purpose of the utility model is to provide a double-safety circuit breaker lower isolation hard interlocking device in view of the defects in the prior art, increase the safety mechanism, prevent disasters before they occur, and improve fault tolerance.

Description

A kind of double safety circuit breaker lower isolation hard interlocking device

technical field

The utility model relates to the technical field of electrical cabinet locks, in particular to a double safety circuit breaker lower isolation hard interlocking device.

Background technique

Electrical cabinets, or electrical equipment installed in power distribution cabinets, need to be installed with locking devices on the electrical cabinet doors to protect the electrical equipment inside. The structure of the traditional locking device is similar to that of a bolt or a door latch, and such locking devices are lacking in safety and reliability.

In the prior art, the locking device of an electrical cabinet door often uses a lock shaft inserted into the cabinet door to perform single control. However, when there is a problem with the lock shaft and the cabinet door, there is a lack of a safety device to ensure operational safety.

In view of the above problems, the designer based on many years of rich practical experience and professional knowledge in the application of this kind of product engineering, and cooperated with the application of theory, actively research and innovate, in order to design the isolation hard interlocking device under the double insurance circuit breaker, increase insurance institutions, Take precautions.

Utility model content

The purpose of the utility model is to provide a double-safety circuit breaker lower isolation hard interlocking device in view of the defects in the prior art, increase the safety mechanism, prevent disasters before they occur, and improve fault tolerance.

In order to achieve the above purpose, the technical scheme adopted by the present utility model is:

It includes a main knife, a ground knife, a main knife lock plate, a ground knife lock plate, a mounting plate, a door control mechanism and a safety mechanism; the safety mechanism is connected with the ground knife, and extends into the cabinet door as the ground knife rotates, It is used to control the opening and closing of the cabinet door; the main knife and the ground knife are fixed on the installation plate for operating opening and closing; the main knife lock plate is slidably connected with the installation plate to block the main knife on the end; the ground knife lock plate is slidably connected with the mounting plate, and is clamped at the end of the ground knife; the main knife lock plate is fixedly connected with the ground knife lock plate, so as to realize the The installation plate slides synchronously; the door control mechanism is arranged at the bottom of the ground knife lock plate, connected with the cabinet door to be controlled, and used to control the movement of the ground knife lock plate according to the opening and closing of the cabinet door.

Further, the safety mechanism includes a cam, a sliding rod and a spring; one end of the cam is connected with the ground knife, and the other end is abutted on the top of the sliding rod; the sliding rod is sleeved by the spring for The cam is inserted into the top of the cabinet door under the control of the cabinet door to lock the cabinet door.

Further, the main knife lock plate is provided with a blocking piece; the blocking piece is used to block the handle of the main knife when the cabinet door is opened, so as to prevent the main knife from engaging with the outside.

Further, a bayonet is provided at the place where the ground knife lock plate and the ground knife are matched; the bayonet is used for locking with the handle of the ground knife when the cabinet door is opened to lock the ground knife.

Further, an installation hole is provided at the connection between the main knife lock plate and the ground knife lock plate; the installation hole is used for screwing bolts to strengthen the fixation between the main knife lock plate and the ground knife lock plate.

Further, the side of the ground knife lock plate is provided with a handle; the handle is used to facilitate the manual push and pull of the ground knife lock plate.

Further, the bottom of the ground knife lock plate is provided with a door lock shaft; when the cabinet door is closed, the door lock shaft is inserted into the top of the cabinet door to lock the cabinet door.

Further, the door control mechanism includes an elastic mechanism, a sliding sheet and a pressing plate; the sliding sheet is vertically connected with the pressing plate; the sliding sheet is pressed against the cabinet door to limit the The pressing plate moves; the elastic mechanism is connected with the end of the pressing plate, and is used to eject the pressing plate when the cabinet door is opened; the pressing plate is used for pressing the door lock shaft when the cabinet door is opened .

Through the technical scheme of the present utility model, the following technical effects can be achieved:

By installing the main knife lock plate and the ground knife lock plate on the installation plate, the main knife and the ground knife are controlled, and then the door control mechanism is linked with the cabinet door to realize the hard interlock. At the same time, an insurance mechanism controlled by the rotation of the ground knife is added to prevent disasters and improve fault tolerance.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments described in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

Fig. 1 is the side view structure diagram of the isolation hard interlocking device under the double fuse circuit breaker in the embodiment of the utility model;

2 is a schematic structural diagram of the safety mechanism of the lower isolation hard interlocking device of the double-safety circuit breaker in the embodiment of the present utility model;

3 is a schematic structural diagram of a lower isolation hard interlocking device of a double-fuse circuit breaker in an embodiment of the present invention;

Fig. 4 is the main knife lock plate and the ground knife lock plate of the lower isolation hard interlocking device of the double fuse circuit breaker in the embodiment of the utility model.

Reference signs: main knife 1, ground knife 2, main knife lock plate 3, ground knife lock plate 4, installation plate 5, door control mechanism 6, safety mechanism 7, baffle 31, bayonet 41, installation hole 42, door lock shaft 43 , the handle 44 , the elastic mechanism 61 , the sliding piece 62 , the pressing plate 63 , the cam 71 , the sliding rod 72 and the spring 73 .

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example.

In the description of the present utility model, it should be noted that "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, with a specific orientation. The orientation configuration and operation are therefore not to be construed as limitations of the present invention.

In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection. Connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

A double safety circuit breaker lower isolation hard interlock device, as shown in Figure 3, includes a main knife 1, a ground knife 2, a main knife lock plate 3, a ground knife lock plate 4, a mounting plate 5, a door control mechanism 6 and a safety mechanism 7; The safety mechanism 7 is connected with the ground knife 2, and extends into the cabinet door as the ground knife 2 rotates, and is used to control the opening and closing of the cabinet door; the main knife 1 and the ground knife 2 are both fixed in the cabinet door. The mounting plate 5 is used to operate opening and closing; the main knife lock plate 3 is slidably connected with the mounting plate 5 and is blocked on the end of the main knife 1; the ground knife lock plate 4 is connected to the mounting plate 5. Sliding connection, stuck on the end of the ground knife 2; the main knife lock plate 3 and the ground knife lock plate 4 are fixedly connected to realize the simultaneous sliding of the two on the installation plate 5; the door control The mechanism 6 is arranged at the bottom of the ground knife lock plate 4 and is connected to the cabinet door to be controlled, and is used to control the movement of the ground knife lock plate 4 according to the opening and closing of the cabinet door.

As a preferred example of the above embodiment, as shown in Figures 1 and 2, the safety mechanism 7 includes a cam 71, a sliding rod 72 and a spring 73; one end of the cam 71 is connected to the ground knife 2, and the other end abuts the The top of the sliding rod 72; the sliding rod 72 is sleeved by the spring 73, and is used to insert into the top of the cabinet door under the control of the cam 71 to lock the cabinet door.

As a preferred embodiment of the above embodiment, as shown in Figures 1 and 4, the main knife lock plate 3 is provided with a blocking piece 31; the blocking piece 31 is used to block the handle of the main knife 1 when the cabinet door is opened, preventing The main knife 1 cooperates with the outside.

As a preference of the above embodiment, as shown in Figures 1 and 4, a bayonet 41 is provided at the place where the ground knife lock plate 4 and the ground knife 2 cooperate; the bayonet 41 is used to connect with the The handle of the ground knife 2 is clamped to lock the ground knife 2 .

As a preferred embodiment of the above-mentioned embodiment, as shown in FIGS. 1 and 4 , installation holes 42 are provided at the connection between the main knife lock plate 3 and the ground knife lock plate 4 ; the installation holes 42 are used for screwing bolts to strengthen the The main knife lock plate 3 and the ground knife lock plate 4 are fixed.

As a preferred embodiment of the above embodiment, as shown in FIGS. 1 and 4 , the side of the ground knife lock plate 4 is provided with a handle 44 ; the handle 44 is used to facilitate the manual push and pull of the ground knife lock plate 4 .

As a preferred embodiment of the above embodiment, as shown in Figures 1 and 4, a door lock shaft 43 is provided at the bottom of the ground knife lock plate 4; when the cabinet door is closed, the door lock shaft 43 is inserted into the top of the cabinet door for locking Live closet door.

As a preferred example of the above embodiment, as shown in FIGS. 1 and 3 , the door control mechanism 6 includes an elastic mechanism 61, a sliding sheet 62 and a pressing plate 63; the sliding sheet 62 is vertically connected with the pressing plate 63; the The sliding piece 62 abuts against the cabinet door, and is used to restrict the movement of the pressing plate 63 when the cabinet door is closed; the elastic mechanism 61 is connected to the end of the pressing plate 63 and is used to prevent the pressing plate 63 from moving when the cabinet door is opened. The pressing plate 63 pops up; the pressing plate 63 is used to abut the door lock shaft 43 when the cabinet door is opened.

Specifically, when the cabinet door is closed, the ground knife lock plate 4 slides downward under the influence of gravity, so that the door lock shaft 43 is inserted into the top of the cabinet door to ensure that the cabinet door is closed. Because the ground knife lock plate 4 is connected with the main knife lock plate 3, the main knife lock plate 3 is also driven to slide down, so that the main knife 1 and the ground knife 2 are released from restrictions, and the opening and closing can be adjusted.

Specifically, when the cabinet door is opened, the ground knife 2 needs to be twisted first, so that the cam 71 in the safety mechanism 7 rotates accordingly, causing the most convex part of the cam 71 to leave the sliding rod 72 , and the sliding rod 72 is retracted under the action of the spring 73 , out of the cabinet door, lift insurance restrictions, improve fault tolerance, and make the operation safer. Then, pull up the ground knife lock plate 4, so that the door lock shaft 43 inserted into the top of the cabinet door is pulled out, the restriction of the cabinet door is released, and the cabinet door can be opened. At the same time, the door control mechanism 6 is no longer pressed against the sliding piece 62 due to the opening of the cabinet door, so that the elastic mechanism 61 connected behind the sliding piece 62 ejects the sliding piece 62, and drives the pressing plate 63 against the door lock shaft 43, forcing the ground knife The lock plate 4 and the main knife lock plate 3 keep moving upward, so that the blocking piece 31 and the bayonet 41 lock the main knife 1 and the ground knife 2 respectively, and the opening and closing operation cannot be performed to ensure safety.

The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention There will also be various changes and improvements in the new model, which all fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. A double safety circuit breaker lower isolation hard interlocking device, characterized in that it comprises a main knife (1), a ground knife (2), a main knife lock plate (3), a ground knife lock plate (4), and a mounting plate (5) , a door control mechanism (6) and a safety mechanism (7); the safety mechanism (7) is connected to the ground knife (2), and extends into the cabinet door as the ground knife (2) rotates for use Control cabinet door opening and closing; the main knife (1) and the ground knife (2) are both fixed on the mounting plate (5) for operating opening and closing; the main knife lock plate (3) and the The mounting plate (5) is slidably connected and blocked on the end of the main knife (1); the ground knife locking plate (4) is slidably connected with the mounting plate (5) and is stuck on the end of the ground knife (2). The main knife lock plate (3) is fixedly connected with the ground knife lock plate (4), so as to realize the synchronous sliding of the two on the installation plate (5); the gate control mechanism (6) is arranged on the The bottom of the ground knife lock plate (4) is connected to the cabinet door to be controlled, and is used to control the movement of the ground knife lock plate (4) according to the opening and closing of the cabinet door. 2 . The hard interlocking device for lower isolation of a double fuse circuit breaker according to claim 1 , wherein the safety mechanism ( 7 ) comprises a cam ( 71 ), a sliding rod ( 72 ) and a spring ( 73 ); the cam (71) One end is connected to the ground knife (2), and the other end is abutted on the top of the sliding rod (72); the sliding rod (72) is sleeved by the spring (73) for the cam (71) Insert the top of the cabinet door under control and lock the cabinet door. 3 . The hard interlocking device for lower isolation of a double fuse circuit breaker according to claim 1 or 2 , wherein a blocking plate ( 31 ) is provided on the main knife lock plate ( 3 ); the blocking plate ( 31 ) is used for When the cabinet door is opened, the handle of the main knife (1) is blocked to prevent the main knife (1) from engaging with the outside. 4. The double-fuse circuit breaker lower isolation hard interlocking device according to claim 1 or 2, characterized in that, a bayonet (41) is provided where the ground knife lock plate (4) and the ground knife (2) cooperate with each other. ); the bayonet (41) is used for snapping with the handle of the ground knife (2) to lock the ground knife (2) when the cabinet door is opened. 5. The double-fuse circuit breaker lower isolation hard interlock device according to claim 1 or 2, characterized in that, the connection between the main knife lock plate (3) and the ground knife lock plate (4) is provided with an installation hole ( 42); the mounting holes (42) are used for screwing bolts to strengthen the fixation between the main knife lock plate (3) and the ground knife lock plate (4). 6. The double-fuse circuit breaker lower isolation hard interlocking device according to claim 1 or 2, characterized in that, a handle (44) is provided on the side of the ground knife lock plate (4); the handle (44) is used for It is convenient for manpower to push and pull the ground knife lock plate (4). 7. The double-fuse circuit breaker lower isolation hard interlock device according to claim 1 or 2, characterized in that a door lock shaft (43) is provided at the bottom of the ground knife lock plate (4); when the cabinet door is closed, The door lock shaft (43) is inserted into the top of the cabinet door to lock the cabinet door. 8 . The hard interlocking device for lower isolation of a double fuse circuit breaker according to claim 7 , wherein the gate control mechanism ( 6 ) comprises an elastic mechanism ( 61 ), a sliding sheet ( 62 ) and a pressing plate ( 63 ); 8 . The sliding piece (62) is vertically connected with the pressing plate (63); the sliding piece (62) is pressed against the cabinet door, and is used for restricting the movement of the pressing plate (63) when the cabinet door is closed; the The elastic mechanism (61) is connected with the end of the abutting plate (63) for ejecting the abutting plate (63) when the cabinet door is opened; against the door lock shaft (43).

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