CN203134601U

CN203134601U - Three-position actuator

Info

Publication number: CN203134601U
Application number: CN 201220728173
Authority: CN
Inventors: 刘晓颖; 刘坚钢; 吴德祥; 何耀明; 许文枫; 朱金东; 戴守祥; 符吉祥
Original assignee: NINGBO YOUWEI ELECTRIC POWER TECHNOLOGY Co Ltd
Current assignee: NINGBO YOUWEI ELECTRIC POWER TECHNOLOGY Co Ltd
Priority date: 2012-12-24
Filing date: 2012-12-24
Publication date: 2013-08-14
Anticipated expiration: 2022-12-24

Abstract

The utility model relates to the technical field of solid insulation ring main units and discloses a three-position actuator. The three-position actuator comprises a connection shaft, a cam, connecting rods, sliding blocks and sliding grooves. The connecting shaft is connected with a rotation center of the cam; two ends of the connecting shaft are supported on the rack; the upper end of each connecting rod is connected into a cam chute through by one pin shaft; the sliding blocks are fixed on the connecting rods; the sliding grooves are fixed on the rack; and the sliding blocks and the sliding grooves form sliding pairs in a vertical direction. When it needs to operation disconnecting switches, the connecting haft rotates to drive the cam to rotate, such that the connecting rods can be further driven to perform linear movement in the vertical direction; the sliding pairs formed in the vertical direction by the sliding blocks and the sliding grooves can limit the connecting rods in right and left directions, such that the connecting rods can drive the sliding blocks to only slide in the vertical direction inside the sliding grooves, and therefore, the swing in the right and left directions of the connecting rods can be avoided, and the consistency in the movement of each disconnecting switch can be ensured, and potential safety hazards can be reduced.

Description

A kind of three position actuators

Technical field

The utility model relates to solid insulation ring main unit technical field, relates in particular to a kind of three position actuators.

Background technology

At present, the solid insulation ring main unit is progressively to miniaturization, compoundization, intelligent direction development, with isolating switch and earthed switch compound be three station isolation-earthed switches, for reduced volume, isolating switch adopts three station vacuum interrupters, and the switch movable contact of three station vacuum interrupters is implemented in the operation of combined floodgate, separating brake, three stations of ground connection by the three-station operating mechanism.

Please referring to Fig. 1-Fig. 4, Fig. 1 is a kind of main TV structure schematic diagram of typical three-position switch actuating mechanism; Fig. 2 is the structural representation of operating mechanism among Fig. 1; Fig. 3 is the plan structure schematic diagram of three position actuators among Fig. 1, and Fig. 4 is the sectional structure schematic diagram of three position actuators among Fig. 3.

As Fig. 1, shown in Figure 2, this three-station operating mechanism comprises operating mechanism and three position actuators 6, wherein operating mechanism comprises isolation rotating shaft 1, ground connection rotating shaft 2, first gear mechanism 4, power transmission shaft 3, second gear mechanism 5, described isolation rotating shaft 1 one ends, one end of ground connection rotating shaft 2 forms the isolated operation end respectively, the ground connection operating side, the other end of described isolation rotating shaft 1, the other end of ground connection rotating shaft 2, one end of power transmission shaft 3 carries out transmission by described first gear drive, the other end of described power transmission shaft 3 is connected with driving gear 51 centers of described second gear drive, and driven gear 52 centers of described second gear drive are connected with three position actuators 6 by connecting axle 60.

As shown in Figure 3, Figure 4, described three position actuators 6 comprise cam 61, connecting rod 62, and the two end supports of described connecting axle is on frame; Described cam 61 is provided with the cam chute, and described cam chute comprises the first segmental arc chute with different arc radius, the second segmental arc chute, the 3rd segmental arc chute that is communicated with successively; The upper end of described connecting rod 62 is provided with pivot pin 64, and described bearing pin 64 is movably connected in the described cam chute, and the lower end of described connecting rod 62 is provided with a plurality of isolating switch moving contact connecting portions for the insulated tension pole that connects a plurality of isolating switches.

Three position actuators of this structure, because the upper end of connecting rod only is stuck in the cam chute by pivot pin, the lower end of connecting rod connects a plurality of isolating switches, in connecting rod carries out up and down straight-line process with cam, connecting rod swings easily, thereby make that each isolating switch action is inconsistent, cause potential safety hazard.

Therefore, how to prevent that the connecting rod of three position actuators from swinging, become the technical barrier that those skilled in the art need to be resolved hurrily.

The utility model content

The purpose of this utility model provides a kind of three position actuators, can prevent that the connecting rod of three position actuators from swinging.

To achieve these goals, the utility model provides a kind of three position actuators, comprise connecting axle, cam, connecting rod, described connecting axle connects the pivot of described cam, and the two end supports of described connecting axle is on frame, and the upper end of described connecting rod is connected in the cam chute of cam by pivot pin, also comprise slide block and chute, described slide block is fixed on the described connecting rod, and described chute is fixed on the described frame, and described slide block and described chute form the sliding pair of vertical direction.

Preferably, described cam both sides can be symmetrical arranged two connecting rods, and the outside of described connecting rod is equipped with slide block, and the frame of described both sides is respectively equipped with the chute that matches with described slide block.

Preferably, described slide block is positioned at the center of described connecting rod.

Preferably, described cam chute comprises the first segmental arc chute with different arc radius, the second segmental arc chute, the 3rd segmental arc chute that is communicated with successively.

Preferably, the radian of the described first segmental arc chute, the second segmental arc chute, the 3rd segmental arc chute is 120 °.

Preferably, connect successively by the junction curve groove between the described first segmental arc chute, the second segmental arc chute, the 3rd segmental arc chute.

Preferably, the isolating switch moving contact connecting portion of described connecting rod is connected with the insulated tension pole of isolating switch by pivot pin.

Preferably, described connecting rod has three isolating switch moving contact connecting portions, is respectively applied to connect the insulated tension pole of three isolating switches, and three isolating switch moving contact connecting portions are in same horizontal level.

A kind of three position actuators that the utility model provides, comprise connecting axle, cam, connecting rod, slide block and chute, described connecting axle connects the pivot of described cam, the two end supports of described connecting axle is on frame, the upper end of described connecting rod is connected in the cam chute by pivot pin, described slide block is fixed on the described connecting rod, and described chute is fixed on the described frame, and described slide block and described chute form the sliding pair of vertical direction.

In the time of need operating isolating switch, connecting axle rotating band moving cam is rotated, and then drivening rod is done rectilinear motion at vertical direction, slide block and chute can carry out spacing to connecting rod at left and right directions at the formed sliding pair of vertical direction, making connecting rod drive slide block can only vertically slide in chute, can prevent that connecting rod from swinging at left and right directions, and then can guarantee the consistency of each isolating switch action, reduce potential safety hazard.

Description of drawings

Fig. 1 is a kind of main TV structure schematic diagram of typical three-position switch actuating mechanism;

Fig. 2 is the structural representation of operating mechanism among Fig. 1;

Fig. 3 is the plan structure schematic diagram of three position actuators among Fig. 1;

Fig. 4 is the sectional structure schematic diagram of three position actuators among Fig. 3;

Fig. 5 is the plan structure schematic diagram of three position actuators provided by the utility model;

Fig. 6 be among Fig. 5 A-A to the sectional structure schematic diagram;

Fig. 7 be among Fig. 5 B-B to the sectional structure schematic diagram;

Fig. 8 be among Fig. 5 C-C to the sectional structure schematic diagram;

Wherein, among Fig. 1-Fig. 8:

Isolate rotating shaft 1, ground connection rotating shaft 2, power transmission shaft 3, first gear mechanism 4, second gear mechanism 5, driving gear 51, driven gear 52, three position actuators 6, connecting axle 60, cam 61, connecting rod 62, pivot pin 63, pivot pin 64, supporting bracket 71, supporting bracket 72, connecting rod 73, chute 8, slide block 9.

Embodiment

In order to make those skilled in the art better understand the technical solution of the utility model, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Please referring to Fig. 5-Fig. 8, Fig. 5 is the plan structure schematic diagram of three position actuators provided by the utility model; Fig. 6 be among Fig. 5 A-A to the sectional structure schematic diagram; Fig. 7 be among Fig. 5 B-B to the sectional structure schematic diagram; Fig. 8 be among Fig. 5 C-C to the sectional structure schematic diagram.

As Fig. 5-shown in Figure 8, the three position actuators that the utility model provides comprise connecting axle 60, cam 61, connecting rod 62, slide block 9 and chute 8.

Described cam 61 is provided with the cam chute, and this cam chute comprises the first segmental arc chute with different arc radius, the second segmental arc chute, the 3rd segmental arc chute that is communicated with successively; The upper end of described connecting rod 62 is provided with pivot pin 64, and described bearing pin 64 is movably connected in the cam chute, and the lower end of described connecting rod 62 is provided with the isolating switch moving contact connecting portion for the insulated tension pole that connects isolating switch; The pivot of described cam 61 is connected with connecting axle 60; Described slide block 9 is fixed on the described connecting rod 62, and described chute 8 is fixed on the described frame, and described slide block 9 and described chute 8 form the sliding pair of vertical directions.

In the time of need operating isolating switch, connecting axle 60 rotating band moving cams 61 are rotated, and then drivening rod 62 is done rectilinear motion at vertical direction, slide block 9 can carry out spacing to connecting rod 62 with chute 8 at left and right directions at the formed sliding pair of vertical direction, making connecting rod 62 drive slide block 9 can only vertically slide in chute 8, can prevent that connecting rod 62 from swinging at left and right directions, and then can guarantee the consistency of each isolating switch action, reduce potential safety hazard.

In the concrete scheme, the two ends of described connecting axle 60 all by bearings on frame, frame comprises supporting bracket 71, the supporting bracket 72 that is arranged side by side, fix by connecting rod between supporting bracket 71 and the supporting bracket 72, the two ends of described connecting axle 60 respectively by bearings on supporting bracket 71, supporting bracket 72.

Further in the scheme, chute 8 can be fixedly installed on supporting bracket 71 or the supporting bracket 72.

The isolating switch moving contact connecting portion that cam 61 both sides can be symmetrical arranged two connecting rods, 62, two connecting rods 62 is connected with the insulated tension pole of isolating switch by pivot pin 63.

In the preferred scheme, the outer survey of described connecting rod is equipped with slide block 9, be respectively equipped with the chute 8 that matches with described slide block 9 on described supporting bracket 71 or the supporting bracket 72, can further guarantee connecting rod 62 in the straight-line stationarity of vertical direction, and then guarantee the accuracy of a plurality of isolating switch synchronization actions.

In the preferred version, in order to make connecting rod 62 stressed even, described slide block 9 can be located at the center of described connecting rod 62.

In the preferred version, when between each station, changing, in order to guarantee the stationarity of isolating switch work, be communicated with successively by the junction curve groove between the first segmental arc chute, the second segmental arc chute, the 3rd segmental arc chute.

In the preferred scheme, the radian of the described first segmental arc chute, the second segmental arc chute, the 3rd segmental arc chute is 120 °, equally for easy and simple to handle, safety, the isolation rotating shaft of three worker's switch operating mechanisms, ground connection rotating shaft Rotate 180 °, connecting rod 62 changes the once-through operation stations.

When isolating rotating shaft and clockwise rotate 180 °, by 120 ° of first gear mechanisms, power transmission shaft, 61 rotations of the second gear mechanism driving cam, the pivot pin on the connecting rod 62 will move upward from low side in chute, realize the close a floodgate conversion of separating brake of isolating switch; Clockwise rotate ground connection rotating shaft Rotate 180 °, by 120 ° of first gear mechanisms, power transmission shaft, 61 rotations of the second gear mechanism driving cam, connecting rod 62 moves upward again, realizes that the isolating switch separating brake is to the conversion of ground connection.

Three position actuators of this structure can realize accurately that the switch movable contact of three station vacuum interrupters is implemented in the operation of combined floodgate, separating brake, three stations of ground connection in straight-line mode.

In the concrete scheme, described isolating switch moving contact connecting portion is connected with the insulated tension pole of isolating switch by pivot pin 63, in the concrete scheme, described connecting rod 62 has three isolating switch moving contact connecting portions, be respectively applied to connect the insulated tension pole of three isolating switches, and three isolating switch moving contact connecting portions are in same horizontal level, to guarantee the synchronism of three isolator operations.

The above only is the description of the preferred implementation of utility model; should be understood that; because the finiteness of literal expression; and objectively have unlimited concrete structure; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.

Claims

1. position actuator, comprise connecting axle, cam, connecting rod, described connecting axle connects the pivot of described cam, the two end supports of described connecting axle is on frame, and the upper end of described connecting rod is connected in the cam chute of cam by pivot pin, it is characterized in that, also comprise slide block and chute, described slide block is fixed on the described connecting rod, and described chute is fixed on the described frame, and described slide block and described chute form the sliding pair of vertical direction.

2. three position actuators according to claim 1 is characterized in that, described cam both sides can be symmetrical arranged two connecting rods, and the outside of described connecting rod is equipped with slide block, and the frame of described both sides is respectively equipped with the chute that matches with described slide block.

3. three position actuators according to claim 1 is characterized in that described slide block is positioned at the center of described connecting rod.

4. according to each described three position actuators of claim 1-3, it is characterized in that described cam chute comprises the first segmental arc chute with different arc radius, the second segmental arc chute, the 3rd segmental arc chute that is communicated with successively.

5. three position actuators according to claim 4 is characterized in that, the radian of the described first segmental arc chute, the second segmental arc chute, the 3rd segmental arc chute is 120 °.

6. three position actuators according to claim 4 is characterized in that, connect successively by the junction curve groove between the described first segmental arc chute, the second segmental arc chute, the 3rd segmental arc chute.

7. three position actuators according to claim 1 is characterized in that, the isolating switch moving contact connecting portion of described connecting rod is connected with the insulated tension pole of isolating switch by pivot pin.

8. three position actuators according to claim 7, it is characterized in that, described connecting rod has three isolating switch moving contact connecting portions, is respectively applied to connect the insulated tension pole of three isolating switches, and three isolating switch moving contact connecting portions are in same horizontal level.