CN201315254Y

CN201315254Y - Five-station change-over switch

Info

Publication number: CN201315254Y
Application number: CNU2008202210517U
Authority: CN
Inventors: 毕迎华; 林飞
Original assignee: Pinggao Group Co Ltd
Current assignee: Pinggao Group Co Ltd
Priority date: 2008-11-18
Filing date: 2008-11-18
Publication date: 2009-09-23
Anticipated expiration: 2018-11-18

Abstract

The utility model discloses a five-station change-over switch which comprises a switch casing, wherein, a moving contact and a static contact are arranged in the casing, a gear rack transmission mechanism is also arranged in the casing, the moving contact is arranged on a rack of the gear rack transmission mechanism, and the static contact is fixedly arranged on the inner wall of the casing along the direction of motion of the rack. Due to the adoption of the structure, the rotational motion of the contacts is replaced by the straight-line motion of the gear rack, and the inertia of the contacts during the rotating process is reduced. The utility model is accurate in transmission, enables the switching in-off to be more proper, saves the manufacturing material and also reduces the production cost.

Description

A kind of five station diverter switches

Technical field

The utility model relates to a kind of closed combined electric switch, relate in particular to a kind of can realize suiting bus operation and realization isolation, the combined electric switch of grounding function.

Background technology

Though the high voltage short circuit device is most important control and a protection equipment in the electric power system, in use also must other electric equipments matches and just can finish the function of control and protection.For adapting to this demand, manufactory after connecting is installed in circuit breaker, isolation, the earthed switch of difference in functionality in the metal enclosed switchgear, Here it is combined electrical apparatus.In order to realize the mutual switching between two buses, also to satisfy the operation such as isolation, ground connection of circuit and bus in addition.Under this demand, the switch of five stations just arises at the historic moment.In order to realize the mutual switching between double-bus and the isolation and the grounding function of power transmission network, the main now different angle of motor drives moving contact rotation that adopts realizes.But because the mass ratio of contact is bigger, owing to inertia, braking ability is bad, can cause bus, isolation and the ground connection situation less than the position that suits in the contact rotary course, the safe operation of harm electrical network.

The utility model content

The purpose of this utility model is: it is straight-line closed five station combined electric switches that a kind of its moving contact is provided, to address the above problem.

The technical solution of the utility model is: a kind of five station diverter switches, comprise switch housing, be provided with moving contact and fixed contact one to one in the enclosure, in described shell, also be provided with a rack and pinion drive mechanism, described moving contact is arranged on the tooth bar of this rack and pinion drive mechanism, and described fixed contact is installed on the inwall of shell along the described tooth bar direction of motion.

Described fixed contact comprises two grounding contact and two bus contacts that are installed in the outer casing inner wall both sides respectively of being installed in respectively on the outer casing inner wall two ends, and described moving contact comprises that corresponding respectively grounding contact is fixed on the 3rd fingertip and the 4th fingertip that first fingertip at described tooth bar two ends, second fingertip and corresponding described bus fingertip are separately fixed at the tooth bar both sides.

Described at the shell two ends grounding contact and between first fingertip at tooth bar two ends and second fingertip for plug-in type electromagnetic is connected cooperation, described bus contact and being electrically connected for sliding between the 3rd fingertip of tooth bar both sides and the 4th fingertip in the shell both sides cooperates.

Adopt said structure, with rotatablely moving with the rectilinear motion form replacement of rack-and-pinion of contact, reduced the inertia in the contact rotary course, its transmission is accurate, and divide-shut brake is more put in place, and saves manufacturing materials, has reduced production cost.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the utility model bus switching state schematic diagram;

Fig. 4 is the utility model bus one schematic diagram that puts into operation;

Fig. 5 is the utility model isolation schematic diagram;

Fig. 6 is the utility model ground connection one view;

Fig. 7 is the utility model bus two schematic diagram that puts into operation;

Fig. 8 is the utility model ground connection two-state schematic diagram.

Embodiment

As shown in Figure 1 and Figure 2, be provided with a rack and pinion drive mechanism in a circular housing 6, comprise gear 9 and tooth bar 7, gear 9 is positioned at the below of tooth bar 7, is equipped with power transmission shaft 10 on the gear 9, and power transmission shaft 10 passes shell 6 and is connected with transmission mechanism.Wherein, tooth bar 7 is provided with first movable contact and refers to 1, second movable contact refers to 2, the 3rd movable contact refers to that the 3 and the 4th movable contact refers to 4, first movable contact refers to that 1 and second movable contact refers to that 2 are installed in the two ends of tooth bar 7 respectively, second movable contact refers to that the 2 and the 3rd movable contact refers to that 3 are separately positioned on the both sides of tooth bar 7 and front and back dislocation a little, the direction of motion that is positioned at tooth bar 7 on the inwall of shell 6 is fixed with grounding contact 5 respectively, grounding contact 8, bus contact 11 and bus contact 12, wherein, grounding contact 5 is arranged on the two ends of shell 6 inwalls and refers to refer to that with second movable contact 2 insertions cooperate that bus contact 11 and bus contact 12 are separately positioned on the both sides of shell 6 inwalls and refer to that with the 3rd movable contact the 3 and the 4th movable contact refers to that 4 are slidingly matched respectively respectively with first movable contact with grounding contact 8.

Running status of the present utility model such as Fig. 3---shown in Figure 8, wherein, among Fig. 3, the movable contact of tooth bar both sides refer to 3,4 respectively with shell on fixing

bus contact

11,12 conductings, begin to carry out two switchings between the bus; Among Fig. 4, tooth bar 7 moves downward, and movable contact refers to that 3 throw off with bus contact 11 and to be connected, movable contact refer to 4 with the 12 continuation conductings of bus contact, the bus one of connection bus contact 12 enters running status; Among Fig. 5, tooth bar 7 continues descending, movable contact refer to 4 with bus contact 12 between disconnection, switch enters isolation; Among Fig. 6, tooth bar 7 comes downwards to the bottom, and movable contact refers to that 2 insert in the grounding contact 8, finishes ground state; Among Fig. 7, tooth bar 7 is up, after switching through as shown in Figure 3 bus, movable contact refer to 4 with bus contact 12 between disconnect, movable contact refer to 3 with the 11 continuation conductings of bus contact, the bus two that is connected on the bus contact 11 puts into operation; Among Fig. 8, tooth bar 7 goes upward to the top, movable contact refer to 3 and bus contact 11 between disconnect, movable contact refers to that 1 inserts in the grounding contact 5, enters ground state.

The utility model is not limited to the foregoing description; those skilled in the art can be easy to expect the dynamic/static contact connected mode of other structure or shape; no matter but how its structure or shape change; so long as use rack and pinion drive mechanism carry out dynamic/static contact in the switch deciliter; and moving contact is arranged on the tooth bar; fixed contact is fixed on the outer casing inner wall, all within protection range of the present utility model.

Claims

1, a kind of five station diverter switches, comprise switch housing, be provided with moving contact and fixed contact one to one in the enclosure, it is characterized in that, in described shell, also be provided with a rack and pinion drive mechanism, described moving contact is arranged on the tooth bar of this rack and pinion drive mechanism, and described fixed contact is installed on the inwall of shell along the described tooth bar direction of motion.

2, five station diverter switches according to claim 1, it is characterized in that, described fixed contact comprises two grounding contact and two bus contacts that are installed in the outer casing inner wall side respectively of being installed in respectively on the outer casing inner wall two ends, and described moving contact comprises that corresponding respectively grounding contact is fixed on the 3rd fingertip and the 4th fingertip that first fingertip at described tooth bar two ends, second fingertip and corresponding described bus fingertip are separately fixed at the tooth bar side.

3, five station diverter switches according to claim 2, it is characterized in that, described at the shell two ends grounding contact and between first fingertip at tooth bar two ends and second fingertip for plug-in type electromagnetic is connected cooperation, described bus contact and being electrically connected for sliding between the 3rd fingertip of tooth bar both sides and the 4th fingertip in the shell both sides cooperates.