CN2679817Y - Driving gear of auto transfer switch - Google Patents

Abstract

The utility model discloses an automatic transfer switch transmission mechanism, which is characterized in that the transmission mechanism adopts a bracket, the electromagnet is fixed on the first part of the bracket, and the armature passes through the armature hole on the first part of the bracket to connect with the electromagnet; the load shaft Installed on the load shaft holes of the second part and the third part, a pull rod connects the armature and the load shaft, and there is a pin on the load shaft; the balance wheel and the moving contact frame are connected as one, and the balance wheel is installed on the outside of the third part. The pin can slide in the slot of the load shaft; the auxiliary switch is installed on the positioning hole of the auxiliary switch, and directly cooperates with the load shaft. The transmission mechanism of the utility model adopts the above technical scheme, the auxiliary switch and the load shaft are directly matched through the bracket, and the balance wheel and the moving contact frame are also connected as a whole, which has the advantages of simple structure, good coordination, large moment of inertia, and reliability. high merit.

Description

Automatic Transfer Switch Transmission Mechanism

technical field

The utility model relates to an electrical switchgear, in particular to an automatic transfer switch transmission mechanism.

Background technique

At present, the transmission mechanism of the automatic transfer switch (ATS for short) using a single electromagnet as the operating power generally has the following two structures, as shown in Figure 1 and Figure 2.

First look at Fig. 1, which is a structural schematic diagram of an existing transmission mechanism. Its working method is as follows: firstly, the electromagnet 11 works, attracts the armature 12, and the armature 12 drives the pull rod 19 to move. The pull rod 19 is connected to the load shaft 15 , and under the pull of the pull rod 19 , the load shaft 15 rotates around the shaft 18 . Then, the pin 14 on the load shaft moves the moving contact frame 13 to rotate. As shown in the figure, there is a long slot on the moving contact frame 13. The rotation of the pin 14 will slide into the slot, so that the moving contact frame 13 will rotate. Because the load shaft 15 is connected with the balance wheel 16, the rotation of the load shaft 15 will cause the balance wheel 16 to rotate together, and with the help of the auxiliary switch 17 connected with the balance wheel 16, the conversion of the automatic transfer switch can be realized. The advantage of the transmission mechanism adopting this structure is that the auxiliary switch 17 is directly matched with the load shaft 15, and the structure is simple; the disadvantage is that the balance wheel 15 is separated from the moving contact frame 13, and the impact force is large during conversion, and the contacts are easy to vibrate.

Fig. 2 is a structural schematic diagram of another transmission mechanism. The working process in Fig. 2 is as follows: firstly, the electromagnet attracts the armature 21, thereby driving the pull rod 22 to move. The pull rod 22 is connected on the swivel frame 23, and the pull rod 22 pulls the swivel frame 23 to rotate, so that the pin 28 on the swivel frame 23 slides in the long groove on the moving contact frame 24. In this structure, the moving contact frame 24 and The balance wheel is connected as a whole, but the long slot on the moving contact frame 24 is not shown in the figure, because the sliding of the pin 28 drives the moving contact frame 24 (including the balance wheel) to rotate, with the help of the auxiliary switch 26 Complete the conversion of the automatic transfer switch. The advantage of this structure is that the moving contact frame 24 is integrated with the balance wheel, and the moment of inertia is large; the disadvantage is that the auxiliary switch 26 is separated from the whole mechanism, and they are connected through the connecting rod 25, but this reduces the reliability of the product .

Because these two structures have their own advantages and disadvantages, if their advantages can be combined, the transmission mechanism can have better performance.

Utility model content

The purpose of this utility model is to provide a transmission mechanism for an automatic transfer switch, which combines the advantages of the two existing structures, has a simple structure, has a large moment of inertia, and improves the reliability of the transmission mechanism at the same time.

In order to achieve the above purpose, the utility model adopts the following technical solutions:

An automatic transfer switch transmission mechanism, in which a single electromagnet attracts an armature to drive a balance wheel and a load shaft to rotate, and cooperates with an auxiliary switch to complete automatic conversion. It is characterized in that the transmission mechanism includes a bracket, and the bracket includes three plate part,

There is an armature hole in the middle of the first part, and the first part is perpendicular to the second part and the third part; the second part and the third part are connected to the first part and are parallel to each other, and the third part is relatively The second part is long, the second part and the third part have load shaft holes at corresponding positions, and the third part has an auxiliary switch positioning hole at a position longer than the second part;

The electromagnet of the transmission mechanism is fixed on the first part of the bracket, and the armature is connected to the electromagnet through the armature hole on the first part of the bracket; the load shaft is installed on the second part and the second part. On the load shaft hole of the three parts, a pull rod connects the armature and the load shaft, and there is a pin on the load shaft; the balance wheel and the moving contact frame are connected as one, and the balance wheel is installed on the first On the outer side of the three parts, the pin can slide in the groove of the moving contact frame; the auxiliary switch is installed on the positioning hole of the auxiliary switch, and is directly matched with the load shaft.

Wherein, the bracket in the transmission mechanism of the automatic transfer switch of the present utility model can be processed by a metal plate.

Due to the adoption of the above technical scheme, the auxiliary switch and the load shaft of the transmission mechanism of the utility model are directly matched through the bracket, and the balance wheel and the moving contact frame are also connected as a whole, which has the advantages of simple structure, good coordination, large moment of inertia and reliable Advantages of high sex.

Description of drawings

Fig. 1 is the structural diagram of a transmission mechanism of an automatic transfer switch of the prior art;

Fig. 2 is a structural diagram of another transmission mechanism of an automatic transfer switch of the prior art;

Fig. 3A is a top view of the transmission mechanism bracket of the automatic transfer switch of the present invention;

Fig. 3B is a side view of the transmission mechanism bracket of the automatic transfer switch of the present invention;

Fig. 3C is a perspective view of the transmission mechanism bracket of the automatic transfer switch of the present invention;

Fig. 4A is a side view of the transmission mechanism of the automatic transfer switch of the present invention;

Fig. 4B is a top view of the transmission mechanism of the automatic transfer switch of the present invention;

Fig. 4C is a perspective view of the transmission mechanism of the automatic transfer switch of the present invention.

Detailed ways

The technical scheme of the utility model will be further described below in conjunction with the accompanying drawings and embodiments.

The transmission mechanism of the automatic transfer switch of the present utility model includes a bracket, please refer to Fig. 3A, 3B and 3C, the bracket includes three plate-shaped parts,

The middle position of the first part 30 has an armature hole 33, and the first part 30 is perpendicular to the second part 31 and the third part 32; the second part 31 and the third part 32 are connected to the first part 30 and are parallel to each other, and the third part 32 Longer than the second part 31, the second part 31 and the third part 32 have a load shaft hole 34 at the corresponding position, and the third part 32 has an auxiliary switch positioning hole 35 at a position longer than the second part 31:

The electromagnet 41 of the transmission mechanism is fixed on the first part 30 of the bracket 46, and the armature 42 is connected with the electromagnet 41 through the armature hole 33 on the first part 30 of the bracket 46; the load shaft 44 is installed on the second part 31 and the third part On the load shaft hole 34 of 32, a pull rod 43 connects the armature 42 and the load shaft 44, and there is a pin 47 on the load shaft 44; the balance wheel and the moving contact frame are connected as one, which is 45 in the figure, the balance wheel and the moving contact The frame 45 is installed on the outside of the third part 32, and the pin 47 can slide in the groove of the movable contact frame 45; the auxiliary switch 48 is installed on the auxiliary switch positioning hole 35, and directly cooperates with the load shaft 44.

Wherein, the above-mentioned bracket can be processed by a metal plate.

The working principle of the transmission mechanism with this structure is as follows:

First, the electromagnet 41 attracts the armature 42 to drive the pull rod 43 to move; the pull rod 43 pulls the load shaft 44 to rotate; the pin 47 on the load shaft 44 slides in the long slot on the moving contact frame 45, driving the balance wheel and the moving contact Frame 45 rotates, and with the help of auxiliary switch 48, the conversion of automatic transfer switch can be completed.

Due to the adoption of the above technical scheme, the auxiliary switch and the load shaft of the transmission mechanism of the utility model are directly matched through the bracket, and the balance wheel and the moving contact frame are also connected as a whole, which has the advantages of simple structure, good coordination, large moment of inertia and reliable Advantages of high sex.

The above-mentioned embodiments are provided for those who are familiar with the field to realize or use the utility model, and those who are familiar with the field can make various modifications or changes to the above-mentioned embodiments without departing from the inventive idea of the present utility model Therefore, the scope of protection of the present utility model is not limited by the above-mentioned embodiments, but should be the maximum scope consistent with the innovative features mentioned in the claims.

Claims (2)

1. an automatic change-over transmission mechanism drives stabilizer and load axis rotation by single electromagnetic actuation armature, cooperates auxiliary switch to finish automatic conversion, it is characterized in that this transmission mechanism comprises a support, and described support comprises three plate portions,

The interposition of first is equipped with an armature hole, and described first and second portion, third part are orthogonal; Described second portion, third part are connected in the described first and are parallel to each other, described third part is longer than described second portion, there is the load axis hole corresponding position on described second portion and the third part, and described third part is longer than on the position of described second portion the auxiliary switch location hole;

The electromagnet of described transmission mechanism is fixed in the described support first, and the armature hole that described armature passes in the described support first links to each other with described electromagnet; Described load axis is installed on the load axis hole of described second portion and third part, and a pull bar connects described armature and described load axis, and a pin is arranged on the described load axis; Described stabilizer and moving contact frame are connected as a single entity, and described stabilizer is installed in the outside of described third part, and described pin can slide in the groove of described load axis; Described auxiliary switch is installed on the described auxiliary switch location hole, directly cooperates with described load axis.

2. automatic change-over transmission mechanism as claimed in claim 1 is characterized in that, described support is to be processed by a metallic plate.

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