CN217655787U - Compact three-station isolation mechanism - Google Patents

Abstract

The utility model relates to a compact three-station isolation mechanism. An isolation operation shaft, an isolation transmission shaft, a mechanism main shaft, a grounding operation shaft and a grounding transmission shaft are rotatably arranged on a frame, and an isolation driving gear and an isolation driving shaft are respectively arranged on the isolation operation shaft and the isolation transmission shaft. The driven gear, the isolation driving gear meshes with the isolation driven gear; the grounding operation shaft and the grounding transmission shaft are respectively provided with a grounding driving gear and a grounding driven gear, and the grounding driving gear meshes with the grounding driven gear; the isolation transmission shaft, the grounding The transmission shaft and the main shaft of the mechanism are respectively provided with an isolation track plate, a ground track plate and a main shaft plate; one end of the isolation link is slidably matched with the isolation track plate, and the other end is rotatably connected with the main shaft plate; one end of the ground link is slidably matched with the ground track plate , the other end is rotatably connected with the main shaft plate; the two ends of the main force spring are respectively rotatably connected with the isolation drive shaft and the ground drive shaft. The thickness of the main body of the mechanism is less than 90mm, which significantly reduces the volume of the ring network cabinet.

Description

A compact three-station isolation mechanism

technical field

The utility model relates to the field of ring network cabinets, in particular to a compact three-station isolation mechanism.

Background technique

In the power transmission and transformation system, the 10kv ring network cabinet is a very important electrical equipment in the power system. As a typical terminal power distribution equipment, it is widely used in the power system and various industrial users. It is an indispensable part of the smart grid. The missing products are directly related to the safe and reliable operation of the power grid.

Atmospheric-pressure sealed air-insulated ring network cabinets have been used more and more because of their safety, environmental protection, stability, small size and strong adaptability. As an important part of the ring network cabinet, the grounding operating mechanism is directly related to the ring network Cabinet performance.

Because the depth of the conventional environment-friendly ring main unit is 950mm, the thickness of the isolation mechanism reaches 230mm, and the occupied area is large. For this reason, the size of the standard atmosphere-sealed air-insulated ring main unit of the State Grid is limited to 770mm in the depth of the cabinet, and the thickness of its operating mechanism needs to be Less than 100mm, in order to reduce the land use cost and manufacturing cost of the ring network cabinet, but at present, only a few domestic manufacturers can develop an isolation mechanism that meets the requirements, which is not conducive to the popularization and use of this environmentally friendly ring network cabinet.

Utility model content

The technical problem to be solved by the utility model is to provide a compact three-station isolation mechanism to overcome the above-mentioned deficiencies in the prior art.

The technical solution of the utility model to solve the above technical problems is as follows: a compact three-station isolation mechanism, comprising: a frame, a main spring, an isolation connecting rod and a grounding connecting rod, and the isolation operation is sequentially arranged on the frame in a rotating form from top to bottom Shaft, isolation transmission shaft, mechanism main shaft, grounding operation shaft and grounding transmission shaft, isolation driving gear and isolation driven gear are respectively fixed on isolation operation shaft and isolation transmission shaft, isolation driving gear meshes with isolation driven gear; grounding operation The grounding driving gear and the grounding driven gear are respectively fixed on the shaft and the grounding transmission shaft, and the grounding driving gear is meshed with the grounding driven gear; the isolation transmission shaft, the grounding transmission shaft and the main shaft of the mechanism are respectively fixed with an isolation track plate and a grounding track plate One end of the isolation link is slidingly matched with the track groove on the isolation track plate, and the other end of the isolation link is rotatably connected with the spindle plate; The other end of the rod is rotatably connected with the main shaft plate; the two ends of the main force spring are respectively rotatably connected with the isolation drive shaft and the ground drive shaft.

The beneficial effects of the present utility model are:

By operating the isolation operation shaft and the grounding operation shaft, the matching switch can be quickly closed, opened and grounded, and the three-position control of the switch can be realized; through the optimized structure design, the thickness of the main body of the mechanism is less than 90mm, which realizes the miniaturization of the mechanism. Lightweight and thin, the volume of the ring network cabinet is significantly reduced; it can be used in standardized atmospheric-sealed air-insulated ring network cabinets, as well as in environmentally-friendly gas-insulated ring network cabinets and SF6 gas-insulated ring network cabinets. Modularization, standardization, miniaturization and environmental protection of cabinet products.

On the basis of the above technical solutions, the utility model can also be improved as follows.

Further, a limit mechanism is arranged between the frame and the main shaft plate to prevent the main shaft plate from continuing to move when the main shaft of the mechanism rotates to the closing position and the grounding position respectively.

The above-mentioned further beneficial effects are: when the station is switched, the matching switch can be accurately stopped at the designated station.

Further, the limiting mechanism includes: a first positioning block, a second positioning block, a first positioning roller, a second positioning roller, a third positioning roller and a fourth positioning roller, and the first positioning block and the second positioning block are respectively at a certain angle It is rotatably installed on both ends of the main shaft plate; the first positioning roller is located at the upper left of the main shaft of the mechanism, the second positioning roller is located at the upper right of the main shaft of the mechanism, and the first positioning roller and the second positioning roller are respectively fixed on the frame; the third The positioning roller is located at the lower right of the main shaft of the mechanism, the fourth positioning roller is located at the lower left of the main shaft of the mechanism, the third positioning roller and the fourth positioning roller are respectively fixed on the frame; the third positioning roller and the fourth The positioning rollers respectively prevent the first positioning block and the second positioning block from continuing to move; the first positioning roller and the second positioning roller respectively prevent the first positioning block and the second positioning block from continuing to move after the main shaft of the mechanism rotates to the grounding position.

The above-mentioned further beneficial effects are: during the closing operation and the grounding operation, the matching switch can be accurately stopped at the closing, opening or grounding positions, and at the same time, the switching over-range can be avoided.

Further, an opening and closing indicator plate is also included, the opening and closing indicator plate is arranged on the outside of the frame, and the opening and closing indicator plate is fixed with one end of the main shaft of the mechanism.

The above-mentioned further beneficial effects are as follows: when the main shaft of the mechanism rotates, the opening and closing indicator plate rotates along with it, so that the operator can intuitively know the opening and closing state.

Description of drawings

Fig. 1 is the structure diagram of the compact three-station isolation mechanism according to the utility model;

Fig. 2 is the state diagram of the compact three-station isolation mechanism of the utility model in an open state;

Fig. 3 is the state diagram of the compact three-station isolation mechanism of the utility model being closed;

FIG. 4 is a state diagram of the compact three-station isolation mechanism according to the present invention being grounded.

In the accompanying drawings, the list of components represented by each number is as follows:

1. Frame, 2. Main spring, 3. Isolation connecting rod, 4. Grounding connecting rod, 5. Isolation operation shaft, 6. Isolation transmission shaft, 7. Mechanism main shaft, 8. Grounding operation shaft, 9. Grounding transmission shaft, 10. Isolation drive gear, 11, Isolation driven gear, 12, Ground driven gear, 13, Isolation track plate, 14, Ground track plate, 15, Spindle plate, 16, First positioning block, 17, Second positioning block , 18, the first positioning roller, 19, the second positioning roller, 20, the third positioning roller, 21, the fourth positioning roller, 22, the opening and closing signs.

Detailed ways

The principles and features of the present invention will be described below with reference to the accompanying drawings, and the examples are only used to explain the present invention, and are not intended to limit the scope of the present invention.

Example 1

As shown in Figures 1 to 4, a compact three-station isolation mechanism includes: a frame 1, a main spring 2, an isolation link 3 and a ground link 4;

The frame 1 is provided with an isolation operation shaft 5, an isolation transmission shaft 6, a mechanism main shaft 7, a ground operation shaft 8 and a ground transmission shaft 9, wherein the isolation operation shaft 5 is rotatably connected with the frame 1, and the isolation transmission shaft 6 is rotatably connected with the frame 1, The mechanism main shaft 7 is rotatably connected with the frame 1, the grounding operation shaft 8 is rotatably connected with the frame 1, the grounding transmission shaft 9 is rotatably connected with the frame 1, the isolation operation shaft 5, the isolation transmission shaft 6, the mechanism main shaft 7, the grounding operation shaft 8 and the grounding transmission The axis 9 is distributed in sequence from top to bottom;

An isolation driving gear 10 and an isolation driven gear 11 are respectively fixed on the isolation operation shaft 5 and the isolation transmission shaft 6, and the isolation driving gear 10 meshes with the isolation driven gear 11;

The grounding operation shaft 8 and the grounding transmission shaft 9 are respectively fixed with a grounding driving gear and a grounding driven gear 12, and the grounding driving gear is meshed with the grounding driven gear 12;

The isolation drive shaft 6, the ground drive shaft 9 and the mechanism main shaft 7 are respectively fixed with an isolation rail plate 13, a ground rail plate 14 and a main shaft plate 15;

One end of the isolation link 3 is slidably matched with the track groove on the isolation track plate 13, that is, one end of the isolation link 3 can slide in the track groove on the isolation track plate 13, and does not separate from the isolation track plate 13. The isolation link 3 The other end is connected with the spindle plate 15 in rotation;

One end of the grounding link 4 is slidably matched with the track groove on the grounding track plate 14 , that is, one end of the grounding link 4 can slide in the track groove on the grounding track plate 14 without leaving the grounding track plate 14 and the grounding link 4 The other end is connected with the spindle plate 15 in rotation;

Both ends of the main force spring 2 are respectively connected in rotation with the isolation transmission shaft 6 and the ground transmission shaft 9 .

Example 2

This embodiment is a further improvement carried out on the basis of Embodiment 1, and the details are as follows:

Between the frame 1 and the main shaft plate 15, a limit mechanism is arranged to prevent the main shaft plate 15 from continuing to move when the main shaft 7 of the mechanism rotates to the closing position and the grounding position respectively.

Example 3

As shown in Figure 2, Figure 3, Figure 4, this embodiment is a further improvement on the basis of Embodiment 1 or 2, as follows:

The limiting mechanism includes: a first positioning block 16, a second positioning block 17, a first positioning roller 18, a second positioning roller 19, a third positioning roller 20 and a fourth positioning roller 21;

The first positioning block 16 and the second positioning block 17 are respectively installed on both ends of the main shaft plate 15 at a certain angle; under normal circumstances, the first positioning block 16 is rotated and installed on the main shaft plate 15 through a pin, and the second positioning block 17 is installed on the main shaft plate 15 through a pin. It is rotatably installed on the main shaft plate 15, and a torsion spring is installed on the pin. The first positioning block 16 and the second positioning block 17 are rotatably connected with the main shaft plate 15 at a certain angle, and the torsion spring plays a reset role;

The first positioning roller 18 and the second positioning roller 19 are located above the main shaft 7 of the mechanism, and the first positioning roller 18 and the second positioning roller 19 are respectively fixed on the frame 1;

The third positioning roller 20 and the fourth positioning roller 21 are located under the main shaft 7 of the mechanism, and the third positioning roller 20 and the fourth positioning roller 21 are respectively fixed on the frame 1;

As shown in FIGS. 2 , 3 and 4 , the first positioning roller 18 is located at the upper left of the mechanism main shaft 7 , the second positioning roller 19 is located at the upper right of the mechanism main shaft 7 , and the third positioning roller 20 is located at the lower right of the mechanism main shaft 7 . , the fourth positioning roller 21 is located at the lower left of the main shaft 7 of the mechanism;

After the main shaft 7 of the mechanism rotates to the opening position, the second positioning roller 19 and the third positioning roller 20 respectively prevent the first positioning block 16 and the second positioning block 17 from continuing to move;

After the mechanism main shaft 7 is rotated to the closing position, the third positioning roller 20 and the fourth positioning roller 21 respectively prevent the first positioning block 16 and the second positioning block 17 from continuing to move;

After the main shaft 7 of the mechanism rotates to the grounding position, the first positioning roller 18 and the second positioning roller 19 respectively prevent the first positioning block 16 and the second positioning block 17 from continuing to move.

Example 4

As shown in Figure 1, this embodiment is a further improvement on the basis of Embodiment 1 or 2 or 3, as follows:

The compact three-station isolation mechanism also includes an opening and closing indicator 22. The opening and closing indicator 22 is arranged outside the frame 1. The opening and closing indicator 22 is fixed with one end of the main shaft 7 of the mechanism. When the main shaft 7 of the mechanism rotates, the The closing indicator 22 follows and rotates, so that the operator can intuitively know the opening and closing state.

The working process is as follows:

Closing operation:

The isolation operating shaft 5 drives the isolation driven gear 11 to rotate through the isolation driving gear 10, thereby driving the isolation transmission shaft 6 to rotate counterclockwise, and compresses the main force spring 2 at the same time. 15 and the mechanism spindle 7 rotate, when the mechanism spindle 7 turns to the closing position, the third positioning roller 20 and the fourth positioning roller 21 prevent the first positioning block 16 and the second positioning block 17 from continuing to move, the mechanism is closed and closed Then reverse the operation to isolate the operating axis 5 to make the mechanism open.

Ground operation:

The grounding operation shaft 8 drives the grounding driven gear 12 to rotate through the grounding driving gear, thereby driving the grounding transmission shaft 9 to rotate clockwise, and compresses the main spring 2 at the same time. When the mechanism spindle 7 rotates to the grounding position, the first positioning roller 18 and the second positioning roller 19 prevent the first positioning block 16 and the second positioning block 17 from continuing to move, and the mechanism is grounded. After the mechanism is grounded, the grounding operation shaft 8 is reversely operated to open the mechanism.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limitations of the present invention, and those of ordinary skill in the art are within the scope of the present invention Variations, modifications, substitutions and variations can be made to the above-described embodiments.

Claims (4)

1. A compact three-station isolation mechanism, characterized by comprising: a frame (1), a main spring (2), an isolation connecting rod (3) and a grounding connecting rod (4), on the frame (1) The isolation operation shaft (5), the isolation transmission shaft (6), the mechanism main shaft (7), the grounding operation shaft (8) and the grounding transmission shaft (9) are arranged in turn from top to bottom in the form of rotation. The isolation operation shaft (5) ) and the isolation drive shaft (6) are respectively fixed with an isolation driving gear (10) and an isolation driven gear (11), the isolation driving gear (10) meshing with the isolation driven gear (11); the isolation driven gear (11); A grounding driving gear and a grounding driven gear (12) are respectively fixed on the grounding operation shaft (8) and the grounding transmission shaft (9), and the grounding driving gear is meshed with the grounding driven gear (12); the isolation An isolation rail plate (13), a ground rail plate (14) and a main shaft plate (15) are respectively fixed on the transmission shaft (6), the ground transmission shaft (9) and the mechanism main shaft (7); the isolation link (3) One end of the connecting rod (13) is slidably fitted with the track groove on the isolating track plate (13), the other end of the isolating connecting rod (3) is rotatably connected with the main shaft plate (15); one end of the grounding connecting rod (4) is connected to the grounding The track grooves on the track plate (14) are slidably matched, and the other end of the grounding link (4) is rotatably connected with the main shaft plate (15); the two ends of the main force spring (2) are respectively connected with the isolation transmission shaft ( 6) Rotately connect with the grounding drive shaft (9). 2 . A compact three-station isolation mechanism according to claim 1 , characterized in that: between the frame ( 1 ) and the main shaft plate ( 15 ), when the main shaft ( 7 ) of the mechanism rotates to the closing position, respectively And the limit mechanism that prevents the spindle plate (15) from continuing to move after the grounding position. 3. A compact three-station isolation mechanism according to claim 2, characterized in that: the limiting mechanism comprises: a first positioning block (16), a second positioning block (17), a first positioning roller (18), the second positioning roller (19), the third positioning roller (20) and the fourth positioning roller (21), the first positioning block (16) and the second positioning block (17) respectively rotate at a certain angle Installed on both ends of the main shaft plate (15); the first positioning roller (18) is located at the upper left of the mechanism main shaft (7), and the second positioning roller (19) is located at the upper left of the mechanism main shaft (7) In the upper right, the first positioning roller (18) and the second positioning roller (19) are respectively fixed on the frame (1); the third positioning roller (20) is located at the lower right of the main shaft (7) of the mechanism, The fourth positioning roller (21) is located at the lower left of the main shaft (7) of the mechanism, and the third positioning roller (20) and the fourth positioning roller (21) are respectively fixed on the frame (1); After the main shaft (7) of the mechanism is rotated to the closing position, the third positioning roller (20) and the fourth positioning roller (21) respectively prevent the first positioning block (16) and the second positioning block (17) from continuing to move; the mechanism After the main shaft (7) is rotated to the grounding position, the first positioning roller (18) and the second positioning roller (19) respectively prevent the first positioning block (16) and the second positioning block (17) from continuing to move. 4. A compact three-station isolation mechanism according to claim 1, characterized in that: it further comprises an opening and closing indicator (22), and the opening and closing indicator (22) is arranged on the frame (22). 1) On the outside, the opening and closing indicator (22) is fixed with one end of the main shaft (7) of the mechanism.

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