Three-station operating mechanism

Abstract

The utility model discloses a three-station operating mechanism, which comprises a shell, and an output shaft, an isolation operating shaft and a grounding operating shaft are rotatably arranged on the shell. A transmission gear, an isolation gear and a grounding gear are arranged in the shell, the transmission gear is installed on the output shaft in a linkage mode, the isolation gear and the grounding gear are rotationally arranged on the isolation operation shaft and the grounding operation shaft respectively, and the transmission gear is meshed with the isolation gear and the grounding gear on the two sides. The parts, corresponding to the outside of the housing, of the isolation operation shaft and the grounding operation shaft are respectively provided with an isolation plectrum used for driving the isolation gear to rotate and a grounding plectrum used for driving the grounding gear to rotate in a linkage manner. The three-station operating mechanism is simpler and more reliable in structure, and the vertical height of the mechanism can be obviously reduced, so that the three-station operating mechanism meets the requirement of the south network on the height of the three-station operating mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to high voltage electrical equipment technical field, in particular to a three position operating mechanism. BACKGROUND

[0002] The closing and opening of the isolating switch of the three-position composite switch, and the closing and opening of the grounding switch. The three-position switch combines the isolating switch and the grounding switch into one, forming a natural mechanical interlock to meet the requirements of five-prevention interlocking. This requires that when the mechanism is in the open position, the isolating switch or the grounding switch can be operated at will, but the grounding switch cannot be operated when the isolating switch is operated, and the isolating switch cannot be operated when the grounding switch is operated. At present, the three-position operating mechanism on the market has a complex transmission structure, occupies a large space, and has a high vertical height. In recent years, the Southern Power Grid Company has required that the height of the three-position operating mechanism be reduced, so it is necessary to improve the existing three-position operating mechanism. SUMMARY

[0003] The utility model discloses a three position operating mechanism, the utility model discloses a structure is simpler and more reliable, and can significantly reduce the vertical height of the mechanism, make it meet the requirement of the height of the three position operating mechanism of the southern net.

[0004] To achieve the above object, the utility model provides the following technical scheme: a three position operating mechanism, including the casing, the output shaft, the isolating operation shaft and the grounding operation shaft are rotationally arranged on the casing, transmission gear, isolating gear and grounding gear are arranged in the casing, the transmission gear is linked and installed on the output shaft, the isolating gear and grounding gear are rotationally arranged on the isolating operation shaft and the grounding operation shaft respectively, and the transmission gear is engaged with the isolating gear and the grounding gear on both sides, the isolating operation shaft and the grounding operation shaft correspond to the parts outside the casing respectively and are linked and installed with the isolating paddle for driving the isolating gear to rotate and the grounding paddle for driving the grounding gear to rotate.

[0005] Through the isolating paddle and the grounding paddle arranged outside the casing, the isolating gear and the grounding gear can be driven to rotate, and then the output shaft is driven to rotate through the transmission gear, so that the isolating closing (opening) and the grounding closing (opening) operation are realized. The structure is simpler and more reliable, and the vertical height of the mechanism can be significantly reduced to meet the height requirements of the three-position operating mechanism of the Southern Power Grid.

[0006] The utility model further sets up, the casing corresponds the position of isolated gear and ground gear front respectively equipped with first let go of hole and second let go of hole, and isolated gear and ground gear on respectively equipped with isolated boss and ground boss, first linkage groove is equipped on isolated switch piece, isolated boss sets up in first linkage groove, when isolated switch piece counterclockwise rotation and first linkage groove one end and isolated boss abut, isolated switch piece promotes isolated boss and makes isolated gear rotate, second linkage groove is equipped on ground switch piece, ground boss sets up in second linkage groove, when ground switch piece clockwise rotation and second linkage groove one end and ground boss abut, ground switch piece promotes ground boss and makes ground gear rotate.

[0007] Through adopting the above technical scheme, by setting isolated boss and ground boss on isolated gear and ground gear respectively, and then pushing isolated boss and ground boss by isolated switch piece on isolated operation shaft and ground switch piece on ground operation shaft respectively, isolated closing (opening) and ground closing (opening) operation is realized, linkage structure is simple and reliable, and small in size.

[0008] The utility model further sets up, isolated boss and ground boss are all cylindrical pin, and isolated boss and ground boss are welded in isolated gear and ground gear side respectively.

[0009] Through adopting the above technical scheme, its structure is simple and reliable, and convenient for processing production.

[0010] The utility model further sets up, the part of output shaft corresponding casing outside linkage installation has baffle, first linkage groove and second linkage groove are all arc grooves, and both ends of first linkage groove are as first initial end and first drive end respectively, when first drive end promotes isolated boss and makes isolated gear rotate to isolated position, transmission gear drives output shaft to rotate and makes baffle rotate to ground operation shaft front and blocks ground operation shaft;The both ends of second linkage groove are as second initial end and second drive end respectively, when second drive end promotes ground boss and makes ground gear rotate to ground position, transmission gear drives output shaft to rotate and makes baffle rotate to isolated operation shaft front and blocks isolated operation shaft.

[0011] Through adopting the above technical scheme, when the operating mechanism is in isolated closing state, baffle blocks ground operation shaft, does not allow operating ground operation shaft, when the operating mechanism is in ground closing state, baffle blocks isolated operation shaft, does not allow operating isolated operation shaft, can prevent the case of misoperation from happening, thereby avoiding the generation safety accident, and baffle also has isolated closing (opening), ground closing (opening) indication's function.

[0012] The utility model further sets up, still be equipped with first limit block and second limit block on the casing, the isolation dial piece and ground dial piece periphery respectively be equipped with first limit step and second limit step, when the isolation lug is located first start end of first linkage groove, first limit block forms limit to first limit step and makes it unable to rotate clockwise, when the ground lug is located second start end of second linkage groove, second limit block forms limit to second limit step and makes it unable to rotate counterclockwise.

[0013] Through adopting above technical scheme, when the mechanism is in the isolation and opening state, the isolation operation shaft can only rotate in the counterclockwise direction (isolation closing direction) and cannot rotate in the clockwise direction; when the mechanism is in the grounding and opening state, the grounding operation shaft can only rotate in the clockwise direction (grounding closing direction) and cannot rotate in the counterclockwise direction, which can effectively avoid the misoperation.

[0014] The utility model further sets up, still be equipped with cam on the output shaft, the casing corresponds the position of cam upper and lower respectively is equipped with ground travel switch and isolation travel switch, when the output shaft drives cam and triggers ground travel switch, isolation closing, when the output shaft drives cam and triggers isolation travel switch, grounding closing.

[0015] Through adopting above technical scheme, the travel switch can generate corresponding electric signal when the mechanism is in the isolation closing or grounding closing state, and the control circuit is turned on or turned off.

[0016] The utility model further sets up, the first sliding plate is slidably arranged between the cam and the ground travel switch, and the second sliding plate is slidably arranged between the cam and the isolation travel switch.

[0017] Through adopting above technical scheme, the sliding block can reduce the volume of the cam under the condition that the mechanism is large, so that the interference caused by the large rotation of the cam can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the front view of the utility model as a whole;

[0019] Figure 2 It is Figure 1 It is the structural schematic view of the structure without the baffle;

[0020] Figure 3 It is the internal structure schematic view of the utility model;

[0021] Figure 4 It is the internal transmission structure schematic view of the utility model.

[0022] In the diagram: 1. Housing; 2. Output shaft; 3. Isolation operating shaft; 4. Grounding operating shaft; 5. Transmission gear; 6. Isolation gear; 7. Grounding gear; 8. Isolation lever; 9. Grounding lever; 10. First clearance hole; 11. Isolation protrusion; 12. Grounding protrusion; 13. First linkage groove; 14. Second linkage groove; 15. Baffle; 16. First starting end; 17. First driving end; 18. Second starting end; 19. Second driving end; 20. First limit block; 21. Second limit block; 22. First limit step; 23. Second limit step; 24. Cam; 25. Grounding limit switch; 26. Isolation limit switch; 27. First sliding plate; 28. Second sliding plate; 29. ​​Second clearance hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example: As attached Figures 1-4 The illustrated three-position operating mechanism includes a housing 1, on which an output shaft 2, an isolation operating shaft 3, and a grounding operating shaft 4 are rotatably mounted. Inside the housing 1 are a transmission gear 5, an isolation gear 6, and a grounding gear 7. The transmission gear 5 is linked to the output shaft 2, and the two are linked by a key connection. The isolation gear 6 and the grounding gear 7 are respectively rotatably mounted on the isolation operating shaft 3 and the grounding operating shaft 4, respectively. A bearing is provided between the isolation gear 6 and the isolation operating shaft 3, and a gear is also provided between the grounding gear 7 and the grounding operating shaft 4. The transmission gear 5 meshes with the isolation gear 6 and the grounding gear 7 on both sides. Isolation levers 8 for driving the isolation gear 6 and grounding levers 9 for driving the grounding gear 7 are respectively linked to the external parts of the housing 1 on the isolation operating shaft 3 and the grounding operating shaft 4. The isolation lever 8 and grounding lever 9, which are set outside the housing 1, can drive the isolation gear 6 and grounding gear 7 to rotate respectively, and then drive the output shaft 2 to rotate through the transmission gear 5, so as to realize the isolation closing (opening) and ground closing (opening) operations. Its structure is simpler and more reliable, and can significantly reduce the vertical height of the mechanism, so as to meet the requirements of the Southern Power Grid for the height of the three-position operating mechanism.

[0025] As attached Figures 1-4As shown, the housing 1 is provided with a first and second let hole 10 and 29 respectively corresponding to the front position of the isolation gear 6 and grounding gear 7, and the isolation gear 6 and grounding gear 7 are respectively provided with an isolation and grounding protrusion 11 and 12, the isolation paddle 8 is provided with a first linkage slot 13, the isolation protrusion 11 is arranged in the first linkage slot 13, when the isolation paddle 8 rotates counterclockwise and one end of the first linkage slot 13 abuts against the isolation protrusion 11, the isolation paddle 8 pushes the isolation protrusion 11 to make the isolation gear 6 rotate, the grounding paddle 9 is provided with a second linkage slot 14, the grounding protrusion 12 is arranged in the second linkage slot 14, when the grounding paddle 9 rotates clockwise and one end of the second linkage slot 14 abuts against the grounding protrusion 12, the grounding paddle 9 pushes the grounding protrusion 12 to make the grounding gear 7 rotate. By arranging the isolation and grounding protrusions 11 and 12 on the isolation and grounding gears 6 and 7 respectively, and then pushing the isolation and grounding protrusions 11 and 12 by the isolation paddle 8 on the isolation operating shaft 3 and the grounding paddle 9 on the grounding operating shaft 4 respectively, the isolation and grounding closing (opening) operations are realized, the linkage structure is simple and reliable, and the volume is small.

[0026] Wherein, the isolation and grounding protrusions 11 and 12 are both cylindrical pins, and the isolation and grounding protrusions 11 and 12 are respectively welded on the side of the isolation and grounding gears 6 and 7. The structure is simple and reliable, and is convenient for processing and production.

[0027] As shown in the accompanying drawings, Figures 1-4 As shown, the output shaft 2 is linkage installed with a baffle 15 corresponding to the part outside the housing 1, the first and second linkage slots 13 and 14 are both arc-shaped slots, and the two ends of the first linkage slot 13 are respectively as a first start end 16 and a first driving end 17, when the first driving end 17 pushes the isolation protrusion 11 to make the isolation gear 6 rotate to the isolation position, the transmission gear 5 drives the output shaft 2 to rotate and makes the baffle 15 rotate to the front of the grounding operating shaft 4 to block the grounding operating shaft 4; the two ends of the second linkage slot 14 are respectively as a second start end 18 and a second driving end 19, when the second driving end 19 pushes the grounding protrusion 12 to make the grounding gear 7 rotate to the grounding position, the transmission gear 5 drives the output shaft 2 to rotate and makes the baffle 15 rotate to the front of the isolation operating shaft 3 to block the isolation operating shaft 3. The two linkage slots are arranged as arc-shaped structures, so that when the mechanism is in the isolation closing (grounding closing) state, the baffle 15 can completely block the grounding operating shaft 4 (isolation operating shaft 3); that is, when the operating mechanism is in the isolation closing state, the baffle 15 blocks the grounding operating shaft 4 and does not allow the grounding operating shaft 4 to be operated, when the operating mechanism is in the grounding closing state, the baffle 15 blocks the isolation operating shaft 3 and does not allow the isolation operating shaft 3 to be operated, which can prevent misoperation and thus avoid safety accidents, and the baffle 15 also has the function of indicating the isolation closing (opening) and grounding closing (opening).

[0028] As attached Figures 1-4 As shown, the housing is also provided with a first limiting block 20 and a second limiting block 21. The outer periphery of the isolation lever 8 and the grounding lever 9 are respectively provided with a first limiting step 22 and a second limiting step 23. When the isolation protrusion 11 is located at the first starting end 16 of the first linkage groove 13, the first limiting block 20 limits the first limiting step 22, preventing it from rotating clockwise. When the grounding protrusion 12 is located at the second starting end 18 of the second linkage groove 14, the second limiting block 21 limits the second limiting step 23, preventing it from rotating counterclockwise. This design ensures that when the mechanism is in the isolation open state, the isolation operating shaft 3 can only rotate counterclockwise (isolation closing direction) and cannot rotate clockwise; when the mechanism is in the grounding open state, the grounding operating shaft 4 can only rotate clockwise (grounding closing direction) and cannot rotate counterclockwise, effectively preventing misoperation.

[0029] As attached Figures 1-4 As shown, the output shaft 2 is also equipped with a cam 24, which is linked to and rotates synchronously with the output shaft 2. Specifically, the output shaft 2 has a spline on its outer circumference, and the cam 24 has a spline groove on its inner circumference. The housing 1 is equipped with a grounding limit switch 25 and an isolation limit switch 26 at positions above and below the cam 24, respectively. When the output shaft 2 drives the cam 24 to trigger the grounding limit switch 25, the circuit is closed; when the output shaft 2 drives the cam 24 to trigger the isolation limit switch 26, the circuit is closed. The limit switches generate corresponding electrical signals when the mechanism is closed for isolation or grounding, controlling the connection and disconnection of the circuit.

[0030] As attached Figures 1-4 As shown, a first sliding plate 27 is slidably disposed between the cam 24 and the grounding limit switch 25, and a second sliding plate 28 is slidably disposed between the cam 24 and the isolation limit switch 26. More specifically, the first sliding plate 27 and the second sliding plate 28 are connected to the housing 1 by screws, and both the first sliding plate 27 and the second sliding plate 28 have elongated holes for the screws to pass through, extending parallel to the connection line between the limit switch and the output shaft 2. The sliding plate design reduces the volume of the cam 24 when the mechanism is large, thereby avoiding interference when the cam 24 rotates excessively.

Claims

1. A three-position operating mechanism, comprising a housing (1), an output shaft (2), an isolated operating shaft (3) and a grounded operating shaft (4) are rotatably arranged on the housing (1); characterized in that: The transmission gear (5) is connected to the output shaft (2), the isolation gear (6) and the grounding gear (7) are respectively arranged on the isolation operation shaft (3) and the grounding operation shaft (4), and the transmission gear (5) is engaged with the isolation gear (6) and the grounding gear (7) on both sides.

2. A triple-station operating mechanism according to claim 1, characterized in that: The first and second let holes (10) and (29) are respectively arranged in front of the isolation gear (6) and the grounding gear (7), the isolation protrusion (11) and the grounding protrusion (12) are respectively arranged on the isolation gear (6) and the grounding gear (7), the first linkage groove (13) is arranged on the isolation paddle (8), the isolation protrusion (11) is arranged in the first linkage groove (13), when the isolation paddle (8) rotates counterclockwise and one end of the first linkage groove (13) abuts against the isolation protrusion (11), the isolation paddle (8) pushes the isolation protrusion (11) to drive the isolation gear (6) to rotate, the second linkage groove (14) is arranged on the grounding paddle (9), the grounding protrusion (12) is arranged in the second linkage groove (14), when the grounding paddle (9) rotates clockwise and one end of the second linkage groove (14) abuts against the grounding protrusion (12), the grounding paddle (9) pushes the grounding protrusion (12) to drive the grounding gear (7) to rotate.

3. A triple-station operating mechanism according to claim 2, characterized in that: The isolation protrusion (11) and the grounding protrusion (12) are both cylindrical pins, and the isolation protrusion (11) and the grounding protrusion (12) are respectively welded on the side of the isolation gear (6) and the grounding gear (7).

4. A triple-station operating mechanism according to claim 2, characterized in that: The output shaft (2) is connected to the baffle (15) outside the shell (1), the first and second linkage grooves (13) and (14) are both arc grooves, and the two ends of the first linkage groove (13) are respectively the first start end (16) and the first driving end (17), when the first driving end (17) pushes the isolation protrusion (11) to drive the isolation gear (6) to rotate to the isolation position, the transmission gear (5) drives the output shaft (2) to rotate and makes the baffle (15) rotate to the front of the grounding operation shaft (4) to block the grounding operation shaft (4), the two ends of the second linkage groove (14) are respectively the second start end (18) and the second driving end (19), when the second driving end (19) pushes the grounding protrusion (12) to drive the grounding gear (7) to rotate to the grounding position, the transmission gear (5) drives the output shaft (2) to rotate and makes the baffle (15) rotate to the front of the isolation operation shaft (3) to block the isolation operation shaft (3).

5. A triple-station operating mechanism according to claim 4, characterized in that: The shell is further provided with a first limiting block (20) and a second limiting block (21), the isolation toggle (8) and the grounding toggle (9) are respectively provided with a first limiting step (22) and a second limiting step (23), when the isolation protrusion (11) is located at the first starting end (16) of the first linkage groove (13), the first limiting block (20) limits the first limiting step (22) so that it cannot rotate clockwise, when the grounding protrusion (12) is located at the second starting end (18) of the second linkage groove (14), the second limiting block (21) limits the second limiting step (23) so that it cannot rotate counterclockwise.

6. A triple-station operating mechanism according to claim 4, characterized in that: The output shaft (2) is further provided with a cam (24), the shell (1) is provided with a grounding travel switch (25) and an isolation travel switch (26) corresponding to the upper and lower positions of the cam (24), when the output shaft (2) drives the cam (24) to trigger the grounding travel switch (25), the isolation is closed, when the output shaft (2) drives the cam (24) to trigger the isolation travel switch (26), the grounding is closed.

7. A triple-station operating mechanism according to claim 6, characterized in that: The cam (24) and the grounding travel switch (25) are slidably provided with a first sliding plate (27), and the cam (24) and the isolation travel switch (26) are slidably provided with a second sliding plate (28).

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