CN201348970Y - Revolving switch device and high voltage switch with revolving switch device - Google Patents

Abstract

The utility model discloses a rotary switch device, which comprises a housing, a static contact fixedly connected to the inner side of the housing and a moving contact rotatably assembled on the inner side of the housing, the moving contact and the static contact are electrically connected with a high-voltage The terminal, the moving contact is electrically connected with a contact arm, and the contact arm is in rotational contact with the static contact. Due to the rotary switch device adopted in the utility model, the contact arm on the movable contact can be directly contacted or disconnected from the static contact by rotating the insulating guide rod, so as to realize the opening and closing of the high-voltage switch, which saves production materials and reduces the cost of the switch. The loss of the device is improved, the service life of the switch device is improved, and the production cost is reduced.

Description

A rotary switch device and a high-voltage switch having the same

technical field

The utility model relates to a switch device, in particular to a rotary switch device, and also to a high-voltage switch with the device, which belongs to the technical field of high-voltage switches.

Background technique

The high-voltage switch is a device for controlling the connection or disconnection of the high-voltage circuit, and this control is realized by opening and closing the high-voltage switch. At present, the usual high-voltage switch is used together with the crank arm transmission mechanism. Through the crank arm transmission mechanism, the insulating guide rod of the high-voltage switch is made to perform axial telescopic movement, resulting in the moving contact at the end of the insulating guide rod and the static contact on the high-voltage switch. The contact or separation of the contacts is the opening and closing of the high-voltage switch, thereby achieving the control of the connection or disconnection of the high-voltage circuit.

In the process of use, the crank arm transmission mechanism has problems such as difficult adjustment of the crank arm and dead points of the crank arm. The shape gear transmission mechanism adopts a rotating transmission mechanism. The rotation of one driving shaft drives three driven shafts to rotate synchronously to achieve the effect of transmission. The three driven shafts correspond to the three phases of the high-voltage switch, each corresponding to a switchgear.

At present, the direct-acting switch device in which the movable contact is in telescopic contact with the static contact along a straight line is matched with the bevel gear transmission mechanism. However, first of all, this switch device must rely on a conversion mechanism that converts rotation into direct motion, such as gears. Rack mechanism, crank mechanism, cam mechanism, etc., not only consume a lot of raw materials, but also bring inconvenience to the assembly of high-voltage switches; secondly, this kind of direct-acting switch device will cause wear and tear of the moving contact with continuous use , it is easy to cause poor contact early, and requires frequent maintenance, so a lot of human resources are wasted, and the production cost is indirectly increased; thirdly, due to the large mass of the moving contact itself, when the position or direction of the direct-acting switch device changes , the transmission torque connected to the moving contact will change greatly. Therefore, when assembling different types of high-voltage switches, the change of torque should also be taken into account, and the requirements for assembly are relatively high.

Utility model content

The purpose of the utility model is to provide a rotary switch device which is conveniently used in conjunction with a bevel gear transmission mechanism, so as to increase the service life of the switch device and reduce production costs.

In order to achieve the above purpose, the technical solution adopted by the rotary switch device of the present invention is: a rotary switch device, including a housing, a static contact fixedly connected to the inner side of the housing and a moving contact rotatably assembled on the inner side of the housing , the moving contact and the static contact are electrically connected with a high-voltage terminal, the moving contact is electrically connected with a contact arm, and the contact arm is in rotational contact with the static contact.

The inner side of the housing is fixedly connected with a bracket, and the end of the bracket is provided with a contact sleeve; one end of the movable contact is provided with an annular boss matching with the contact sleeve, and the other end of the movable contact is fixedly connected There is an insulating guide rod, and the other end of the insulating guide rod is fixedly connected with a rotating shaft, and the other end of the rotating shaft is inserted and rotatably assembled on the housing, and the end of the rotating shaft is fixedly connected with a bevel gear.

The contact arm is composed of a conductive sheet with one end electrically connected and fixed on the side of the movable contact, and a contact head electrically connected and fixed at the other end of the conductive sheet for rotating contact with the static contact.

The technical solution adopted by the high-voltage switch of the utility model is: a high-voltage switch, including a transmission device and a switch device, the switch device is a rotary switch device, and the rotary switch device includes a housing, which is fixedly connected to the inner side of the housing. The static contact and the movable contact that are rotatably assembled inside the shell, the movable contact and the static contact are electrically connected with a high-voltage terminal, the movable contact is electrically connected with a contact arm, and the contact arm is connected to the static contact Rotating contact.

The inner side of the housing is fixedly connected with a bracket, and the end of the bracket is provided with a contact sleeve; one end of the movable contact is provided with an annular boss matching with the contact sleeve, and the other end of the movable contact is fixedly connected There is an insulating guide rod, and the other end of the insulating guide rod is fixedly connected with a rotating shaft, and the other end of the rotating shaft is inserted and rotated on the housing, and the end of the rotating shaft is connected to the transmission device through a bevel gear.

The contact arm is composed of a conductive sheet with one end electrically connected and fixed on the side of the movable contact, and a contact head electrically connected and fixed at the other end of the conductive sheet for rotating contact with the static contact.

Due to the rotary switch device adopted in the utility model, the contact arm on the movable contact can be directly contacted or disconnected from the static contact by rotating the insulating guide rod, so as to realize the opening and closing of the high-voltage switch. Using this kind of rotary switch device, first of all, avoids the use of other power conversion mechanisms, and only relies on the bevel gear connected to the outer end of the insulating guide rod to realize the cooperation with the bevel gear transmission mechanism, saving production materials; secondly, The contact arm connected to the moving contact is composed of a conductive sheet with certain flexibility and a contact head connected to the end of the conductive sheet. The contact head has a certain thickness, which improves the wear resistance in the process of contacting the static contact. , and the conductive sheet used can make the moving contact continue to rotate at a certain angle after the contact head contacts the static contact, which acts as a buffer, avoids poor contact caused by long-term use, and improves the service life; again, A bearing mechanism can be used on the housing that fixes the rotary switch device. Even if the moving contact itself has a large mass, when the position or direction of the device changes, the rotational torque will not change greatly, that is, Its rotational torque is very stable, and the requirements for assembly are not high, which improves assembly efficiency.

Description of drawings

Figure 1 is a cross-sectional view of a rotary switch device;

Figure 2 is a schematic diagram of the structure of the high voltage switch;

Figure 3 is an enlarged view of A in Figure 2;

Fig. 4 is a cross-sectional view of the B-phase gear box of the high-voltage switch;

Fig. 5 is a cross-sectional view of a high-voltage switch A-phase gear box;

Fig. 6 is a cross-sectional view of a C-phase gear box of a high voltage switch.

Detailed ways

As shown in Figure 1, the rotary switch device of the present invention includes a housing 3, a static contact 5 and a moving contact 1, and a high-voltage terminal 8, 10 is fixedly connected inside the housing 3, and a high-voltage terminal 8, 10 The static contact 5 and the bracket 9 are electrically connected to the top, and the end of the bracket 9 is electrically connected with a contact cover 32; one end of the moving contact 1 is fixedly connected with an insulating guide rod 2, and the other end of the insulating guide rod 2 is connected to the The rotating shaft 7 is fixedly connected, and the other end of the rotating shaft 7 is inserted and rotated to be assembled on the housing 3. The inner bevel gear 4 is fixed at the end of the rotating shaft 7, and the other end of the moving contact 1 is provided with an annular boss 31. The annular boss 31 is plugged and rotated in the contact cover 32 of the bracket, and the movable contact 1 is electrically connected to the bracket 9; a contact arm is electrically connected to the side of the movable contact 1, and the contact arm is electrically connected by one end. The conductive sheet 30 connected and fixed on the side of the movable contact 1 and the contact head 6 electrically connected and fixed at the end of the conductive sheet 30 for rotating contact with the static contact 5 are composed of the fixed contact 5 and the movable contact 1. The distance is less than the length of the contact arm, and the contact arm can make the contact head 6 on the contact arm and the static contact 5 rotate or disconnect by rotating the movable contact 1, so as to realize the opening and closing of the high voltage switch.

As shown in Figures 2-6, the high-voltage switch of the present invention includes three phases A, B, and C, respectively corresponding to three rotary switch devices, namely A-phase switch device 24, B-phase switch device 25 and C-phase switch device 26, The structure of the rotary switch device has been described in the above embodiments, and will not be described in detail here. Gear boxes are respectively fixedly connected to the outside of each phase switchgear, that is, A-phase gear box 16, B-phase gear box 13 and C-phase gear box 18; The sub-transmission shafts 14 are respectively fitted with a bevel gear 11, and the bevel gears 11 are respectively connected with the switchgears of each phase through the corresponding internal bevel gears 4; The guide rods are connected, and the connection between the two ends of the telescopic transmission guide rod is through the cross universal joint 21. The telescopic transmission guide rod includes a transmission rod 22 and a connecting plate 41 connecting the ends of the transmission rod 22. The connection The two ends of the plate 41 are respectively locked on the end of the transmission rod 22 through the fastening plate 42, and the telescopic adjustment of the telescopic transmission guide rod is realized by adjusting the locking position of the fastening plate 42 and the connecting plate 41 at the end of the transmission rod 22 . A power input shaft 15 is provided in the gear box of the B-phase switchgear 25, and the end of the power input shaft 15 is connected with the bevel gear 11 on the transmission shaft 14 through a bevel gear 12. On the other side of the power input shaft 15 One end is connected with an electric device for power input to the high voltage switch.

The specifications adopted by the bevel gear 12 of the high-voltage switch of the present invention and the internal bevel gear 4 are the same, and the specifications adopted by the bevel gear 11 on the drive shaft are also the same, the purpose is to ensure that the power input shaft and the rotating shaft The rotation speed of the switch is consistent, and the A, B, C three-phase opening and closing of the high-voltage switch are synchronized.

When the high-voltage switch of the utility model is in use, when the switch is closed, power is provided from the outside to make the power input shaft 15 rotate, and the power input shaft 15 drives the transmission shaft 14 of the B phase to rotate through the bevel gear mechanism, and the transmission shaft 14 of the B phase passes through The cross universal joint 21 and the telescopic transmission guide rod 22 drive the transmission shaft 14 of phase A and phase C to rotate synchronously, and the transmission shaft 14 synchronously drives the rotation shaft 7 to rotate through the bevel gear mechanism, so that the rotary switch device movable contact 1 The upper contact arm 6 rotates and contacts with the static contact 5 to realize closing. When opening, it can be realized only by performing the reverse operation of closing, which will not be described in detail here.

Claims (6)

1, a kind of rotary switch device, it is characterized in that: comprise housing, be fixedly connected on the fixed contact of housing inboard and the moving contact that rotation is assemblied in the housing inboard, be electrically connected with high-voltage terminal on this moving contact and the fixed contact, be electrically connected with contact arm on the described moving contact, contact arm rotates with fixed contact and contacts.

2, rotary switch device according to claim 1 is characterized in that: the inboard of described housing is fixedly connected with support, and the end of this support is provided with the contact cover; One end of described moving contact is provided with the annular boss that cooperates with contact cover difference cover, the other end of moving contact is fixedly connected with insulating guide rod, the other end of insulating guide rod is fixedly connected with rotating shaft, the other end of this rotating shaft is inserted to wear to rotate and is assemblied on the described housing, and the end of described rotating shaft is fixedly connected with angular wheel.

3, rotary switch device according to claim 1 and 2 is characterized in that: described contact arm is electrically connected the conducting strip that is fixed on the moving contact side and forms with the contact head that is used for contacting with the fixed contact rotation that electrical connection is fixed on the conducting strip other end by an end.

4, a kind of high-voltage switch gear, comprise transmission device and switching device, it is characterized in that: described switching device is a rotary switch device, this rotary switch device comprises housing, be fixedly connected on the fixed contact of housing inboard and the moving contact that rotation is assemblied in the housing inboard, be electrically connected with high-voltage terminal on this moving contact and the fixed contact, be electrically connected with contact arm on the described moving contact, contact arm rotates with fixed contact and contacts.

5, high-voltage switch gear according to claim 4 is characterized in that: the inboard of described housing is fixedly connected with support, and the end of this support is provided with the contact cover; One end of described moving contact is provided with the annular boss that cooperates with contact cover difference cover, the other end of moving contact is fixedly connected with insulating guide rod, the other end of insulating guide rod is fixedly connected with rotating shaft, the other end of this rotating shaft is inserted to wear to rotate and is assemblied on the described housing, and the end of described rotating shaft is in transmission connection by angular wheel and described transmission device.

6, according to claim 4 or 5 described high-voltage switch gears, it is characterized in that: described contact arm is electrically connected the conducting strip that is fixed on the moving contact side and forms with the contact head that is used for contacting with the fixed contact rotation that electrical connection is fixed on the conducting strip other end by an end.

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