CN211858500U - Three-phase integrated isolating knife synchronous frame and isolating switch transmission structure - Google Patents

Abstract

The utility model relates to a three-phase integrated isolating knife synchronizing frame, which comprises an A-phase knife rest and is suitable for the connection of an A-phase isolating knife; the B phase knife rest is suitable for the B phase separation knife connection; the C-phase tool rest is suitable for C-phase isolated tool connection; and the transverse frame is fixedly connected with the A-phase tool rest, the B-phase tool rest and the C-phase tool rest respectively and is suitable for enabling the A-phase tool rest, the B-phase tool rest, the C-phase tool rest and the transverse frame to move synchronously. A transmission structure of an isolating switch comprises a transmission shaft, wherein the transmission shaft is suitable for driving three rotating arms to synchronously rotate; the isolating knife mounting seat is rotatably connected with an isolating knife A, an isolating knife B and an isolating knife C; the three-phase integrated isolating cutter synchronous frame is characterized in that the isolating cutter A and the arc-shaped connecting rod A are connected with the cutter frame A, the isolating cutter B and the arc-shaped connecting rod B are connected with the cutter frame B, and the isolating cutter C and the arc-shaped connecting rod C are connected with the cutter frame C. When the three-phase isolation knife is in grounding and closing operation, the knife positions are unified and the synchronism is good.

Description

Three-phase integrated isolating knife synchronizing frame and isolating switch transmission structure

technical field

The utility model relates to the field of circuit breakers, in particular to a three-phase integrated isolating knife synchronizing frame and an isolating switch transmission structure.

Background technique

The circuit breaker is controlled by the isolating switch to control its three-phase position operation of closing, opening and grounding.

In the previous isolation switch mechanism, the three phases of ABC are driven by the drive shaft to move the isolation knife back and forth between the closing, opening and grounding stations through the rotating arm and the arc connecting rod in turn; the three-phase ABC is closing and opening. The synchronization time must be controlled within 2 milliseconds at the same time. For example, the time interval between the closing and opening of the AB phase, the BC phase, and the AC phase cannot exceed 2 milliseconds.

In the current isolation switch transmission structure, when the three-phase isolation knife rotates through the driving force transmitted by the three-phase rotating arm and the arc-shaped connecting rod, it is difficult to achieve the three-phase isolation knife and the grounding contact seat and the closing contact. The seat is in synchronous contact, that is, there are problems that the three-phase tool positions are not uniform and the synchronization is not good.

Utility model content

The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art, to provide a three-phase integrated isolating knife synchronizing frame and an isolating switch transmission structure, so as to solve the problem that the three-phase isolating knife is not in the position of the knife during grounding and closing operations. Unification and poor synchronicity.

The technical scheme adopted by the utility model to solve its technical problems is:

In one aspect, a three-phase integrated isolating knife synchronizing frame is provided, comprising:

A-phase knife holder, suitable for connection with A-phase isolation knife;

B-phase knife holder, suitable for connection with B-phase isolation knife;

C-phase knife holder suitable for connection with C-phase isolation knife; and

The horizontal frame is respectively fixedly connected with the A phase tool holder, the B phase tool holder and the C phase tool holder, and is suitable for the synchronous movement of the A phase tool holder, the B phase tool holder, the C phase tool holder and the horizontal holder.

Further, each of the three knife holders is provided with knife holes for the isolation knives to pass through.

Further, both ends of the three tool holders are provided with connecting grooves for cooperating with connecting bolts on the isolation knives.

Further, the three tool rests are all provided with adapter parts for cooperating with the arc-shaped connecting rods.

Further, a plurality of sink grooves for increasing the creepage distance are provided on the transverse frame between two adjacent tool holders.

Further, a pair of inner bumps for isolation from abutment are provided on both sides of the three knife holes.

In another aspect, there is provided an isolating switch transmission structure, comprising:

A transmission shaft, the A-phase rotating arm, the B-phase rotating arm and the C-phase rotating arm are respectively arranged on the transmission shaft, and the transmission shaft is suitable for driving the three rotating arms to rotate synchronously; the A-phase rotating arm and the B-phase rotating arm The arm and the C-phase rotating arm are respectively connected with the A-phase arc-shaped connecting rod, the B-phase arc-shaped connecting rod and the C-phase arc-shaped connecting rod;

an isolation knife mounting seat, the isolation knife mounting seat is rotatably connected to the A-phase isolation knife, the B-phase isolation knife and the C-phase isolation knife; and

In the above-mentioned three-phase integrated isolating knife synchronizing frame, the A-phase isolating knife and the A-phase arc connecting rod are all connected with the A-phase knife rest, and the B-phase isolating knife and the B-phase arc connecting rod are all connected with the B-phase knife The C-phase isolation knife and the C-phase arc connecting rod are connected with the C-phase knife holder.

The beneficial effects of the present utility model are:

A three-phase integrated isolating knife synchronizing frame and an isolating switch transmission structure are provided, so that the three-phase isolating knives of ABC are connected together through the three-phase integrated isolating knife synchronizing frame, so that driven by the transmission shaft, the three-phase ABC can be connected together. The isolating knives move synchronously, so that the three-phase isolating knives have uniform knife positions and good synchronization during grounding and closing operations.

Description of drawings

The present utility model will be further described below in conjunction with the accompanying drawings.

1 is a schematic diagram of a three-phase integrated isolating knife synchronizing frame of the present utility model;

Fig. 2 is a schematic diagram of the three-phase integrated isolating knife synchronizing frame connecting the isolating knife and the drive shaft;

Figure 3 is a schematic diagram of the transmission structure of the isolation switch;

Among them, 1, horizontal frame, 2A, A phase tool holder, 2B, B phase tool holder, 2C, C phase tool holder, 21, connecting groove, 22, inner bump, 23, adapter, 24, tool hole, 3A, A phase isolation knife, 3B, B phase isolation knife, 3C, C phase isolation knife, 31, connecting bolt, 4, drive shaft, 5A, A phase rotating arm, 5B, B phase rotating arm, 5C, C phase rotating Arm, 6A, A phase arc connecting rod, 6B, B phase arc connecting rod, 6C, C phase arc connecting rod, 7. Isolation knife mounting seat.

Detailed ways

The present utility model will now be further described with reference to the accompanying drawings. These drawings are all simplified schematic diagrams and only illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.

Example 1

As shown in FIG. 1 , a three-phase integrated isolating tool synchronous frame includes a horizontal frame 1 , a phase A tool holder 2A, a B phase tool holder 2B and a C phase tool holder 2C.

A-phase tool holder 2A is adapted to connect with A-phase isolation blade 3A; B-phase tool holder 2B is adapted to be connected to B-phase isolation blade 3B; C-phase tool holder 2C is adapted to be connected to C-phase isolation blade 3C; and

The horizontal frame 1 is respectively fixedly connected with the A-phase tool rest 2A, the B-phase tool rest 2B and the C-phase tool rest 2C, and is suitable for the A-phase tool rest 2A, the B-phase tool rest 2B, the C-phase tool rest 2C and the horizontal frame 1. Synchronized movement.

In this embodiment, the horizontal frame 1 is injection-molded together with the A-phase tool holder 2A, the B-phase tool holder 2B, and the C-phase tool holder 2C, and the material is PC.

Specifically, in this embodiment, each of the three tool holders is provided with a knife hole 24 . The knife hole 24 is used for the isolation knife to pass through, and then cooperates with the connecting bolt 31 on the isolation knife to realize the fixed connection between the isolation knife and the knife holder.

Specifically, in this embodiment, both ends of the three tool rests are provided with connecting grooves 21 for matching with connecting bolts 31 on the isolation knife.

Specifically, in this embodiment, the three tool rests are provided with adapter portions 23 for cooperating with the arc-shaped connecting rods. The adapter portion 23 is integrally injection-molded with the tool holder.

Specifically, in this embodiment, a plurality of sinking grooves are provided on the horizontal frame 1 between two adjacent tool holders. The function of each sinking groove is to increase the creepage distance and avoid short-circuiting between adjacent isolation blades. Phenomenon.

Specifically, in this embodiment, a pair of inner bumps 22 are provided on both sides of the three knife holes 24 for isolation from abutment. The contact between each tool holder and the isolation tool relies on the inner bump 22, which reduces the contact area and reduces the safety hazard of creepage.

The three-phase integrated isolating knife synchronizing frame of this embodiment is used to connect the A-phase isolating knife 3A, the B-phase isolating knife 3B, and the C-phase isolating knife 3C to make a synchronous movement as a whole, and the three-phase isolating knife positions of the line of sight are unified. , the synchronization is good.

Embodiment 2

As shown in FIGS. 2 and 3 , an isolation switch transmission structure is provided, including a transmission shaft 4 , an isolation knife mounting seat 7 and the above-mentioned three-phase integrated isolation knife synchronizing frame.

The A-phase rotating arm 5A, the B-phase rotating arm 5B and the C-phase rotating arm 5C are respectively set on the transmission shaft 4, the transmission shaft 4 is a hexagonal shaft, and the transmission shaft 4 is suitable for driving the three rotating arms to rotate synchronously; The A-phase rotating arm 5A, the B-phase rotating arm 5B, and the C-phase rotating arm 5C are connected to the A-phase arc link 6A, the B-phase arc link 6B, and the C-phase arc link 6C, respectively.

The isolation knife mounting seat 7 is rotatably connected to the A-phase isolation knife 3A, the B-phase isolation knife 3B and the C-phase isolation knife 3C;

Specifically, a knife seat is fixed on the isolation knife mounting seat 7, and a rotational connection is formed between the isolation knife and the knife seat.

The A-phase isolation knife 3A and the A-phase arc connecting rod 6A are all connected with the A-phase knife rest 2A of the three-phase integrated isolation knife synchronizing frame, and the B-phase isolation knife 3B and the B-phase arc connecting rod 6B are both connected to The B-phase tool rest 2B of the three-phase integrated isolating knife synchronizing frame is connected, and the C-phase isolating knife 3C and the C-phase arc connecting rod 6C are both connected to the C-phase tool rest 2C of the three-phase integrated isolating knife synchronizing frame.

Specifically, an adapter is formed between the arc-shaped connecting rod and the tool holder through the adapter portion 23 of the tool holder.

Specifically, connecting bolts 31 are used for fixed connection between the isolation knife and the tool rest. The connecting bolts 31 on the isolation knife respectively pass through the connecting grooves 21 on the knife rest, and the two connecting bolts 31 on each isolation knife restrict the tool rest. Move relative to the length of the isolation knife.

In the isolating switch transmission structure of this embodiment, the three-phase isolating knife of ABC adopts a three-phase integrated isolating knife synchronizing frame, so that when the isolating switch performs grounding and closing operations, the knife position can be unified and the synchronization is good. .

Taking the above ideal embodiment according to the present invention as inspiration, through the above description, relevant staff can make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present utility model is not limited to the content in the description, and its technical scope must be determined according to the scope of the claims.

Claims (7)

1. A three-phase integrated isolation knife synchronous frame is characterized by comprising

The A phase knife rest is suitable for being connected with the A phase isolation knife;

the B phase knife rest is suitable for being connected with the B phase separation knife;

the C-phase knife rest is suitable for being connected with the C-phase isolation knife; and

and the transverse frame is fixedly connected with the A-phase tool rest, the B-phase tool rest and the C-phase tool rest respectively and is suitable for enabling the A-phase tool rest, the B-phase tool rest, the C-phase tool rest and the transverse frame to move synchronously.

2. The three-phase integrated isolating knife synchronizer according to claim 1,

knife holes for isolating the knives to pass through are formed in the three knife rests.

3. The three-phase integrated isolating knife synchronizer according to claim 1,

the two ends of the three knife rests are provided with connecting grooves matched with the connecting bolts on the isolating knife.

4. The three-phase integrated isolating knife synchronizer according to claim 1,

all be provided with on the three knife rest and be used for with arc connecting rod complex switching portion.

5. The three-phase integrated isolating knife synchronizer according to claim 1,

a plurality of sinking grooves used for increasing creepage distance are arranged on the cross frame between two adjacent tool rests.

6. The three-phase integrated isolating knife synchronizer according to claim 2,

a pair of inner convex blocks used for being isolated from the butting connection are arranged on two sides in the three knife holes.

7. A transmission structure of an isolating switch is characterized by comprising

The transmission shaft is provided with an A-phase rotating arm, a B-phase rotating arm and a C-phase rotating arm respectively and is suitable for driving the three rotating arms to synchronously rotate; the phase A rotating arm, the phase B rotating arm and the phase C rotating arm are respectively connected with the phase A arc connecting rod, the phase B arc connecting rod and the phase C arc connecting rod;

the isolation knife mounting seat is respectively and rotatably connected with an A isolation knife, a B isolation knife and a C isolation knife; and

the three-phase integrated isolating knife synchronous frame according to any one of claims 1 to 6, wherein the isolating knife A and the arc-shaped connecting rod A are connected with the knife rest A, the isolating knife B and the arc-shaped connecting rod B are connected with the knife rest B, and the isolating knife C and the arc-shaped connecting rod C are connected with the knife rest C.

Images