Three-station isolating switch operating mechanism

Abstract

The utility model discloses a three-position disconnecting switch operating mechanism, comprising a rotating shaft assembly comprising a left operating shaft, an output shaft and a right operating shaft which are arranged in sequence at intervals; the rotary gear set comprises a left side gear, a middle gear and a right side gear which are correspondingly mounted on the left operation shaft, the output shaft and the right operation shaft and are sequentially meshed, and the left side gear and the right side gear are mounted on the corresponding left operation shaft and the right operation shaft in an empty sleeving manner respectively; the left connecting mechanism and the right connecting mechanism are used for being connected with the corresponding left gear and the corresponding right gear and driving the left gear and the right gear to rotate, are used for being connected with the corresponding left gear and the corresponding right gear and driving the left gear and the right gear to rotate the limiting mechanism and are used for limiting the rotating angles of the rotating gear set and the rotating shaft assembly. The transmission mechanism is simple in structure, low in cost, high in transmission precision, compact in structure and small in gap, is driven in a gear transmission mode, and can obtain different transmission ratios by simply changing the number of teeth on the basis that the appearance of the whole operation mechanism is not changed.

Description

Technical Field

[0001] The utility model relates to the field of disconnecting switches, in particular to a three-position disconnecting switch operating mechanism. Background Art

[0002] At present, a three-position (i.e., closing, opening, and grounding) disconnecting switch is a very important switching element in the medium-voltage power transmission and distribution field of the power system, and is widely used in products such as environmentally friendly gas-insulated switchgear, solid-insulated switchgear, and air-insulated ring main units; there are various driving methods for the operating mechanisms supporting it, such as active grooved-wheel type, passive grooved-wheel type, connecting rod type, etc., but they all have disadvantages such as low transmission accuracy, large clearance, difficult adjustment of transmission ratio, complex structure, large volume, and high cost.

[0003] Therefore, the research purpose of the utility model is to design a three-position disconnecting switch operating mechanism with a simple structure, relatively low cost, high transmission accuracy, compact structure with small clearance, relatively simple adjustment of transmission ratio, and on the basis of the unchanged outer shape of the entire operating mechanism, different transmission ratios can be obtained by changing the number of teeth. Summary of the Utility Model

[0004] In view of the above technical problems existing in the prior art, the utility model provides a three-position disconnecting switch operating mechanism, which can effectively solve the technical problems existing in the above prior art.

[0005] The technical solution of the utility model is as follows:

[0006] A three-position disconnecting switch operating mechanism, comprising:

[0007] A rotating shaft assembly, including a left operating shaft, an output shaft, and a right operating shaft that are sequentially arranged at intervals from left to right;

[0008] A rotating gear set, including a left gear, an intermediate gear, and a right gear that are correspondingly installed on the left operating shaft, the output shaft, and the right operating shaft and are sequentially meshed, and the left gear and the right gear are respectively sleeved on the corresponding left operating shaft and right operating shaft;

[0009] The left connection mechanism and the right connection mechanism are respectively used to connect the corresponding left gear and right gear and drive them to rotate. The left connection mechanism and the right connection mechanism are respectively installed on the left operation shaft and the right operation shaft. The left connection mechanism and the right connection mechanism are relatively connected and an appropriate elastic compression spring is connected therebetween. When the left operation shaft or the right operation shaft rotates and drives the corresponding left connection mechanism and right connection mechanism to rotate accordingly, when the elastic compression spring is compressed and the left connection mechanism and the right connection mechanism are in contact with the corresponding left gear or right gear, the elastic force of the elastic compression spring is released and pushes the connected left gear or right gear to rotate. At the same time, the intermediate gear is driven to rotate through gear meshing transmission, and drives the other right gear or left gear to rotate in the same direction, and pushes the corresponding connected right connection mechanism or left connection mechanism to rotate;

[0010] The limiting mechanism is used to limit the rotation angle of the rotating gear set and the rotating shaft assembly.

[0011] The left gear and the right gear are respectively rotatably connected to the corresponding left operation shaft and right operation shaft through corresponding gear sleeves. The rotating gear set further includes left driving plates and right driving plates that are arranged before and after the corresponding left gear and right gear and are fixedly installed on the corresponding gear sleeves.

[0012] The left driving plate and the right driving plate have the same structure, and two circumferentially spaced positioning parts are integrally formed and protrude outward from the outer peripheral wall thereof.

[0013] The left connection mechanism includes a left crank arm assembly and a left spring support pin installed on the left operation shaft and rotating with the left operation shaft. The right connection mechanism includes a right crank arm assembly and a right spring support pin installed on the right operation shaft and rotating with the right operation shaft. The left spring support pin and the right spring support pin both include a rod-shaped part and a base part respectively used for sleeving and fixing the elastic compression spring, and a driving part for pushing the rotating gear set. The left spring support pin and the right spring support pin are butt-jointed and fixed. The elastic compression springs are sleeved outside the rod-shaped parts of the left spring support pin and the right spring support pin, and their two ends are respectively fixed to the base parts of the left spring support pin and the right spring support pin.

[0014] The left crank arm assembly includes two left driving crank arms installed on the left operation shaft at intervals before and after. The right crank arm assembly includes two right driving crank arms installed on the right operation shaft at intervals before and after. Between the two left driving crank arms and between the two right driving crank arms are respectively fixedly connected through corresponding connecting rods. The left spring support pin is fixedly installed on the left operation shaft through the base part, and the right spring support pin is fixedly installed on the right operation shaft through the base part.

[0015] The limiting mechanism includes a lower left positioning pin and a lower right positioning pin respectively used to limit the rotation angles of the left drive plate and the right drive plate, and an upper left positioning pin and an upper right positioning pin respectively used to limit the rotation angles of the left drive crank arm and the right drive crank arm. Moreover, the distance between the upper positioning pin and the corresponding operating shaft is greater than the distance between the lower positioning pin and the corresponding operating shaft.

[0016] The operating mechanism may further include a rotating shaft assembly of the mounting mechanism and a support frame of the limiting mechanism. Corresponding arc-shaped holes are provided on one side of the rotating gear set on the support frame. The rod-shaped parts of the left spring support pin and the right spring support pin respectively penetrate through the corresponding arc-shaped holes and rotate along the arc-shaped holes.

[0017] The left gear, the right gear, and the intermediate gear are non-full-tooth gears or full-tooth gears.

[0018] Advantages of the present utility model:

[0019] 1) The structure of the present utility model is simple and the cost is relatively low. Moreover, it adopts a gear transmission method for driving, with high transmission precision, a compact structure with small gaps, and relatively simple adjustment of the transmission ratio. On the basis of the unchanged outer shape of the entire operating mechanism, different transmission ratios can be obtained by changing the number of teeth.

[0020] 2) In the present utility model, the gear and the drive plate are connected at a designed angle through a gear sleeve to form an integral body and are sleeved on the operating shaft. After the operating shaft drives the drive crank arm to rotate to the designed position, the drive crank arm is used to push the gear and the drive plate to rotate, and then the intermediate gear is driven to rotate by the gear meshing method and another gear idles, thereby effectively achieving the effects of simplifying the structure and making the structure compact. Moreover, due to the different rotation directions of the two operating shafts, the intermediate gear has three accurately positioned positions, realizing the three-position operation of the disconnector. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the present utility model.

[0022] Figure 2 is an assembly schematic diagram of the left gear, the left drive plate, and the gear sleeve.

[0023] Figure 3 is a state schematic diagram of the output shaft of the present utility model in the middle position.

[0024] Figure 4 is a state schematic diagram of the left operating shaft of the present utility model when operated to the closed position.

[0025] Figure 5 is a state schematic diagram of the right operating shaft of the present utility model when operated to the closed position.

[0026] In the drawings: left operating shaft 1, output shaft 2, right operating shaft 3, left gear 4, right gear 5, intermediate gear 6, elastic compression spring 7, left drive plate 8, right drive plate 9, left spring support pin 10, right spring support pin 11, drive part 101, left drive crank arm 12, right drive crank arm 13, lower left positioning pin 14, lower right positioning pin 15, upper left positioning pin 16, upper right positioning pin 17, arc-shaped hole 18, support frame 19, gear sleeve 20, positioning part 21. Detailed implementation mode

[0027] For the convenience of those skilled in the art to understand, the structure of the present utility model will be further described in detail below in conjunction with the accompanying drawings:

[0028] Refer to Figures 1-5 , a three-position disconnecting switch operating mechanism, comprising:

[0029] A rotating shaft assembly, including a left operating shaft 1, an output shaft 2, and a right operating shaft 3 that are arranged at intervals from left to right in sequence;

[0030] A rotating gear set, including a left gear 4, an intermediate gear 6, and a right gear 5 that are correspondingly installed on the left operating shaft 1, the output shaft 2, and the right operating shaft 3 and are meshed in sequence. The left gear 4 and the right gear 5 are respectively sleeved on the corresponding left operating shaft 1 and right operating shaft 3;

[0031] A left connection mechanism and a right connection mechanism, which are respectively used to connect the corresponding left gear 4 and right gear 5 and drive them to rotate. The left connection mechanism and the right connection mechanism are respectively installed on the left operating shaft 1 and the right operating shaft 3. The left connection mechanism and the right connection mechanism are connected relatively and an appropriate elastic compression spring 7 is connected between them. When the left operating shaft 1 or the right operating shaft 3 rotates and drives the corresponding left connection mechanism and right connection mechanism to rotate accordingly, and the elastic compression spring 7 is compressed and the left connection mechanism and the right connection mechanism are in contact with the corresponding left gear 4 or right gear 5, the elastic force of the elastic compression spring 7 is released and pushes the connected left gear 4 or right gear 5 to rotate. At the same time, the intermediate gear 6 is driven to rotate through gear meshing transmission, and drives the other right gear 5 or left gear 4 to rotate in the same direction, and pushes the corresponding connected right connection mechanism or left connection mechanism to rotate;

[0032] A limiting mechanism, which is used to limit the rotation angle of the rotating gear set and the rotating shaft assembly.

[0033] The structure of the present utility model is simple, the cost is relatively low, and it is driven by a gear transmission method. The transmission accuracy is high, the structure is compact with small gaps, and the transmission ratio adjustment is relatively simple. On the basis of the unchanged outer shape of the entire operating mechanism, different transmission ratios can be obtained by changing the number of teeth.

[0034] In the utility model, a gear and a driving plate are arranged and connected at a designed angle through a gear sleeve 20 to form an integral body and are sleeved on an operating shaft in an idle manner. After the operating shaft drives a driving crank arm to rotate to a designed position, the driving crank arm is used to push the gear and the driving plate to rotate, and then the meshing mode of the gear is used to drive an intermediate gear to rotate and another gear to rotate idly, so as to effectively achieve the effects of simplified structure and compact structure; and due to the different rotation directions of the two operating shafts, the intermediate gear 6 has three accurately positioned positions, realizing the three-position operation of the disconnector.

[0035] The left gear 4 and the right gear 5 are respectively rotatably connected to the corresponding left operating shaft 1 and right operating shaft 3 through corresponding gear sleeves 20. The rotating gear set further includes left driving plates 8 and right driving plates 9 which are arranged before and after the corresponding left gear 4 and right gear 5 and are fixedly installed on the corresponding gear sleeves 20.

[0036] The left driving plate 8 and the right driving plate 9 have the same structure, and two circumferentially spaced positioning portions 21 are integrally formed and protrude outward from the outer peripheral wall thereof.

[0037] The left connection mechanism includes a left crank arm assembly and a left spring support pin 10 which are installed on the left operating shaft 1 and rotate with the left operating shaft 1. The right connection mechanism includes a right crank arm assembly and a right spring support pin 11 which are installed on the right operating shaft 3 and rotate with the right operating shaft 3. The left spring support pin 10 and the right spring support pin 11 each include a rod-shaped portion and a base portion for respectively sleeving and fixing an elastic spring 7, and a driving portion 101 for pushing the rotating gear set. The left spring support pin 10 and the right spring support pin 11 are butt-jointed and fixed to each other. The elastic spring 7 is sleeved on the outer sides of the rod-shaped portions of the left spring support pin 10 and the right spring support pin 11, and its two ends are respectively fixed to the base portions of the left spring support pin 10 and the right spring support pin 11.

[0038] The left crank arm assembly includes two left driving crank arms 12 which are installed on the left operating shaft 1 at intervals before and after. The right crank arm assembly includes two right driving crank arms 13 which are installed on the right operating shaft 3 at intervals before and after. The two left driving crank arms 12 and the two right driving crank arms 13 are respectively fixedly connected through corresponding connecting rods. The left spring support pin 10 is fixedly installed on the left operating shaft 1 by a base portion and is fixedly installed between the two left driving crank arms 12. The right spring support pin 11 is fixedly installed on the right operating shaft 3 by a base portion and is fixedly installed between the two right driving crank arms 13.

[0039] The limiting mechanism includes a lower left positioning pin 14 and a lower right positioning pin 15 for limiting the rotation angles of the left driving plate 8 and the right driving plate 9, respectively, and an upper left positioning pin 16 and an upper right positioning pin 17 for limiting the rotation angles of the left driving crank arm 12 and the right driving crank arm 13, respectively, and the spacing between the upper positioning pin and the corresponding operating shaft is greater than the spacing between the lower positioning pin and the corresponding operating shaft.

[0040] The operating mechanism may also include a support frame 19 for installing a mechanism shaft assembly and a limiting mechanism, and a corresponding arc hole 18 is provided on the support frame 19 on one side of the rotating gear group, and the rod-shaped parts of the left compression spring support pin 10 and the right compression spring support pin 11 respectively penetrate the corresponding arc hole 18 and rotate along the arc hole 18.

[0041] The left gear 4, the right gear 5 and the middle gear 6 are non-full-tooth gears or full-tooth gears.

[0042] The specific operation process of this utility model:

[0043] When operating on the left side, the left operating shaft 1 rotates clockwise (according to the Figure 4 When the left gear 4 is rotated in the same direction as the left gear 4, the left driving arm 12 and the left compression spring support pin 10 rotate together with the left operating shaft 1; the gear sleeve 20, the left gear 4 and the left driving plate 8 are made into a whole with a fixed relative position, and are loosely sleeved on the left operating shaft 1 by the gear sleeve 20; therefore, in the initial stage of the rotation of the left operating shaft 1, the left gear 4 will not rotate; when the left operating shaft 1 rotates until the elastic compression spring 7 passes the midpoint (that is, the centers of the left compression spring support pin 10, the left operating shaft 1 and the right operating shaft 3 are in a straight line), the elastic force of the elastic compression spring 7 is released, and the left compression spring support pin 10 pushes the positioning part 21 on the left driving plate 8, thereby driving the left driving plate 8 and the left gear 4 to rotate together to the position limited by the lower left positioning pin 7, and the left gear 4 drives the intermediate gear 6 to rotate and drives the output shaft 2 to rotate the designed angle. At this time, the right gear 5 is driven by the intermediate gear 6 to idle to the adjacent Figure 4 Position shown.

[0044] Similarly, if attached Figure 5 As shown, when operating on the right side, the right operating shaft 3 rotates counterclockwise (according to the Figure 5Rotating in the (direction), the right driving crank arm 13 and the right spring support pin 11 rotate together with the right operating shaft 3; the gear sleeve 20, the right gear 5, and the right driving plate 9 are made as an integral body with fixed relative positions and are sleeved on the right operating shaft 3 through the gear sleeve 20; therefore, in the initial stage of the rotation of the right gear shaft 12, the right gear 5 does not rotate; when the right operating shaft 3 rotates to the point where the elastic compression spring 7 passes the midpoint (i.e., the centers of the right spring support pin 11, the left operating shaft 1, and the right operating shaft 3 are in a straight line), the elastic force of the elastic compression spring 7 is released, and the right spring support pin 11 pushes the positioning portion 21 on the right driving plate 9, thereby driving the right driving plate 9 and the right gear 5 to rotate together until the position defined by the lower right positioning pin 15, and the right gear 5 drives the intermediate gear 6 to rotate to drive the output shaft 2 to rotate by the designed angle; at this time, the left gear 4 idles under the drive of the intermediate gear 6 until it reaches the attached Figure 5 shown position.

[0045] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A three-position disconnecting switch operating mechanism, characterized in that, Comprising: A rotating shaft assembly, including a left operating shaft (1), an output shaft (2), and a right operating shaft (3) that are sequentially arranged at intervals from left to right; A rotating gear set, including a left gear (4), an intermediate gear (6), and a right gear (5) that are correspondingly installed on the left operating shaft (1), the output shaft (2), and the right operating shaft (3) and are sequentially meshed. The left gear (4) and the right gear (5) are respectively sleeved on the corresponding left operating shaft (1) and right operating shaft (3); A left connection mechanism and a right connection mechanism, which are respectively used to connect the corresponding left gear (4) and right gear (5) and drive them to rotate. The left connection mechanism and the right connection mechanism are respectively installed on the left operating shaft (1) and the right operating shaft (3). The left connection mechanism and the right connection mechanism are relatively connected and an elastic compression spring (7) is connected between them. When the left operating shaft (1) or the right operating shaft (3) rotates and drives the corresponding left connection mechanism and right connection mechanism to rotate accordingly, and the elastic compression spring (7) is compressed and the left connection mechanism and the right connection mechanism are in contact with the corresponding left gear (4) or right gear (5), the elastic force of the elastic compression spring (7) is released and pushes the connected left gear (4) or right gear (5) to rotate. At the same time, the intermediate gear (6) is driven to rotate through gear meshing transmission, and drives the other right gear (5) or left gear (4) to rotate in the same direction, and pushes the corresponding connected right connection mechanism or left connection mechanism to rotate; A limiting mechanism, which is used to limit the rotation angle of the rotating gear set and the rotating shaft assembly.

2. The operating mechanism of a three-position disconnector according to claim 1, characterized in that, The left gear (4) and the right gear (5) are respectively rotatably connected to the corresponding left operating shaft (1) and right operating shaft (3) through corresponding gear sleeves (20). The rotating gear set further includes a left driving plate (8) and a right driving plate (9) that are arranged before and after the corresponding left gear (4) and right gear (5) and are fixedly installed on the corresponding gear sleeves (20).

3. The three-position disconnecting switch operating mechanism according to claim 2, characterized in that, The left driving plate (8) and the right driving plate (9) have the same structure, and two circumferentially spaced positioning parts (21) are integrally formed by outward protrusion of their outer peripheral walls.

4. The three-position disconnecting switch operating mechanism according to claim 3, characterized in that, The left connection mechanism includes a left crank arm assembly and a left spring support pin (10) that are installed on the left operating shaft (1) and rotate with the left operating shaft (1). The right connection mechanism includes a right crank arm assembly and a right spring support pin (11) that are installed on the right operating shaft (3) and rotate with the right operating shaft (3). The left spring support pin (10) and the right spring support pin (11) both include a rod-shaped part and a base part for respectively sleeving and fixing the elastic compression spring (7), and a driving part (101) for pushing the rotating gear set. The left spring support pin (10) and the right spring support pin (11) are fixedly butted against each other. The elastic compression spring (7) is sleeved on the outer sides of the rod-shaped parts of the left spring support pin (10) and the right spring support pin (11), and its two ends are respectively fixed to the base parts of the left spring support pin (10) and the right spring support pin (11).

5. The three-position disconnecting switch operating mechanism according to claim 4, characterized in that, The left turning arm assembly includes two left driving turning arms (12) which are installed on the left operating shaft (1) at intervals in the front and rear directions. The right turning arm assembly includes two right driving turning arms (13) which are installed on the right operating shaft (3) at intervals in the front and rear directions. Between the two left driving turning arms (12) and between the two right driving turning arms (13), they are respectively fixedly connected by corresponding connecting rods. It is fixedly installed between the two left driving turning arms (12) through a base portion, and the left spring support pin (10) is fixedly installed on the left operating shaft (1). It is fixedly installed between the two right driving turning arms (13) through a base portion, and the right spring support pin (11) is fixedly installed on the right operating shaft (3).

6. The operating mechanism of a three-position disconnecting switch according to claim 5, characterized in that, The limiting mechanism includes a lower left positioning pin (14) and a lower right positioning pin (15) which are respectively used to limit the rotation angles of the left driving plate (8) and the right driving plate (9), and an upper left positioning pin (16) and an upper right positioning pin (17) which are respectively used to limit the rotation angles of the left driving turning arm (12) and the right driving turning arm (13), and the distance between the upper positioning pin and the corresponding operating shaft is greater than the distance between the lower positioning pin and the corresponding operating shaft.

7. The three-position disconnecting switch operating mechanism according to claim 6, wherein The operating mechanism may further include a mounting mechanism rotating shaft assembly and a support frame (19) of the limiting mechanism. On the support frame (19), corresponding arc-shaped holes (18) are provided on one side of the rotating gear set. The rod-shaped parts of the left spring support pin (10) and the right spring support pin (11) respectively penetrate through the corresponding arc-shaped holes (18) and rotate along the arc-shaped holes (18).

8. A three-position disconnecting switch operating mechanism according to claim 1, characterized in that, The left gear (4), the right gear (5), and the intermediate gear (6) are non-full-tooth gears or full-tooth gears.

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