Double-hole disconnecting switch operating mechanism

Abstract

The utility model belongs to the technical field of isolating switches, and particularly relates to a double-hole isolating switch operating mechanism which comprises a manual operation structure, the manual operation structure comprises a panel, a valve, an isolating input shaft, a grounding input shaft, a first gear set and a chain wheel, and the isolating input shaft is coaxially provided with a first gear. A second gear meshed with the first gear is coaxially arranged on the grounding input shaft, the second gear is connected with the input end of the first gear set, and the chain wheel is connected with the output end of the first gear set; an isolation operation hole, a grounding operation hole and an operation sliding groove are formed in the panel in a penetrating mode, the isolation operation hole is opposite to the outer end of the isolation input shaft, the grounding operation hole is opposite to the outer end of the grounding input shaft, a main operation hole is formed in the valve in a penetrating mode, a valve shifting shaft is arranged on the valve, and the valve is arranged on the inner side of the panel in a relatively sliding mode. The valve shifting shaft penetrates through the operation sliding groove and is exposed out of the panel, and the valve shifting shaft is shifted along the operation sliding groove, so that the main operation hole is switched between the isolation operation hole and the grounding operation hole.

Description

Technical Field

[0001] The utility model belongs to the technical field of isolating switches, and in particular relates to an operating mechanism for a double-hole isolating switch. Background Art

[0002] The three-position isolating switch integrates the grounding position on the traditional two-position isolating switch. The three-position isolating switch has three working positions, namely the closing position, the grounding position and the intermediate isolating position. The isolating switch operating mechanism is an operating mechanism used in the three-position isolating switch to make the three-phase contacts in the three positions of connection, isolation and grounding.

[0003] The existing isolating switch operating mechanism, such as the three-position isolating switch operating mechanism disclosed in patent application CN202020725178.3, has a three-axis arrangement, a first gear is set on the grounding operation input shaft, and a second gear is set on the isolating operation input shaft. The first gear and the second gear drive the third gear with an incomplete number of teeth on the output shaft of the mechanism to realize the energy storage of the three-position isolating switch. The existing isolating switch operating mechanism can be manually operated, but the existing isolating switch operating mechanism is not provided with a manual foolproof structure, and the grounding operation input shaft and the isolating operation input shaft are very easy to be misrotated, resulting in misoperation. Utility Model Content

[0004] In order to solve the problem that manual operation of an isolating switch operating mechanism in the prior art is prone to misoperation, the utility model provides a double-hole isolating switch operating mechanism.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: a double-hole isolating switch operating mechanism, including a manual operating structure, the manual operating structure including a panel, a valve, an isolating input shaft, a grounding input shaft, a first gear set and a sprocket, the isolating input shaft is coaxially provided with a first gear, the grounding input shaft is coaxially provided with a second gear, the first gear and the second gear are meshed with each other, the second gear is connected to the input end of the first gear set, the sprocket is connected to the output end of the first gear set, and the sprocket outputs to the three-phase contacts of the three-position isolating switch, so that the three-phase contacts are connected, isolated and grounded;

[0006] The panel is penetrated by an isolation operation hole, a grounding operation hole and an operation slide groove, the isolation operation hole is arranged opposite to the outer end of the isolation input shaft, the grounding operation hole is arranged opposite to the outer end of the grounding input shaft, the valve is penetrated by a main operation hole, the valve is provided with a valve shift shaft, the valve is relatively slidably arranged on the inner side of the panel, the valve shift shaft passes through the operation slide groove and is exposed to the panel, the valve shift shaft is shifted along the operation slide groove, and the valve shift shaft drives the valve to slide relative to the panel, so that the main operation hole switches between the isolation operation hole and the grounding operation hole, when the valve shift shaft is in the initial position, the main operation hole is located between the isolation operation hole and the grounding operation hole, and at this time, the valve simultaneously covers the outer end of the isolation input shaft and the outer end of the grounding input shaft.

[0007] Preferably, the valve shaft comprises a shaft core, a shaft sleeve and a spring, the inner end of the shaft core is connected to the valve, the outer end of the shaft core passes through the panel, the shaft sleeve and the spring are both slidably sleeved on the outer end of the shaft core, the outer end of the shaft core is connected to a limit block, the spring is located between the shaft sleeve and the limit block, and the shaft sleeve is pressed against the panel under the action of the spring. The structure of the valve shaft is simple and reliable, and the valve shaft can only be slid by overcoming the elastic force of the spring and pulling the shaft sleeve outward to separate it from the panel, which effectively avoids misoperation caused by accidentally touching the valve shaft, and the manual operation process is more reliable, stable and safe, improving the manual anti-fool effect.

[0008] Furthermore, the operating slide groove has circular holes at the middle and both ends, the diameter of the circular holes is larger than the diameter of the shaft core, and smaller than the diameter of the shaft sleeve, so as to ensure that the valve shaft slides reliably and stably along the operating slide groove, and that the valve shaft is positioned in the corresponding circular holes after sliding into place.

[0009] Preferably, a first mounting plate is provided inside the valve, the isolation input shaft and the grounding input shaft are both provided on the first mounting plate, a first guide column is provided on the first mounting plate, and a first guide groove cooperating with the first guide column is provided on the valve, so as to improve the reliability and stability of the valve sliding.

[0010] Furthermore, the double-hole isolating switch operating mechanism also includes an electric operating structure, which includes a motor, and the output end of the motor is connected to the second gear transmission. The double-hole isolating switch operating mechanism can be operated manually or electrically, ensuring that the double-hole isolating switch operating mechanism is reliable and stable.

[0011] Furthermore, the double-hole isolating switch operating mechanism also includes a first micro switch and a first trigger bar, wherein the first micro switch is arranged on the first mounting plate, and the first trigger bar is connected to the valve. When the valve shaft is in the initial position, the first micro switch is not triggered; when the valve shaft drives the valve to slide relative to the panel so that the main operating hole switches between the isolating operating hole and the grounding operating hole, the first trigger bar triggers the first micro switch, and at this time, the motor does not start after receiving the signal of the first micro switch. The double-hole isolating switch operating mechanism can be operated manually or electrically, and the first micro switch and the first trigger bar are more important to give priority to manual operation, especially in manual emergency operation.

[0012] Furthermore, a second guide column is provided on the first mounting plate, and a second guide groove cooperating with the second guide column is provided on the first trigger bar, so as to improve the reliability and stability of the sliding of the first trigger bar and the accuracy of triggering the first micro switch.

[0013] Preferably, when the isolation operation hole is aligned with the outer end of the isolation input shaft, the isolation input shaft can be rotated by the handle; when the grounding operation hole is aligned with the outer end of the grounding input shaft, the grounding input shaft can be rotated by the handle; after the operation, the handle is pulled out, and the valve shaft is toggled along the operation slide groove to reset to the initial position, at which time the valve covers the outer ends of the isolation input shaft and the outer ends of the grounding input shaft at the same time. Using an independent dedicated handle to operate the double-hole isolation switch operating mechanism further avoids misoperation.

[0014] Beneficial effects:

[0015] 1. In the double-hole isolating switch operating mechanism of the utility model, when the valve shaft is in the initial position, the main operating hole is located between the isolating operating hole and the grounding operating hole. At this time, the valve covers the outer ends of the isolating input shaft and the grounding input shaft at the same time, that is, a fool-proof structure is set to effectively avoid misoperation. Only by moving the valve shaft along the operating slide groove, the valve shaft drives the valve to slide relative to the panel, so that the main operating hole switches between the isolating operating hole and the grounding operating hole. When the isolating operating hole is aligned with the outer end of the isolating input shaft, the isolating input shaft can be rotated; when the grounding operating hole is aligned with the outer end of the grounding input shaft, the grounding input shaft can be rotated, so as to achieve reliable, stable and safe manual operation;

[0016] 2. The double-hole isolating switch operating mechanism of the utility model has a simple and reliable structure of the valve shaft. The valve shaft can only be slid by overcoming the elastic force of the spring and pulling the sleeve outward to separate it from the panel, which effectively avoids misoperation caused by accidentally touching the valve shaft. The manual operation process is more reliable, stable and safe, and the manual anti-foolproofing effect is improved.

[0017] 3. The double-hole isolating switch operating mechanism of the utility model can be operated manually or electrically. When the valve shaft is in the initial position, the first microswitch is not triggered, and the motor can be started normally according to demand to realize electric operation; when the valve shaft drives the valve to slide relative to the panel, so that the main operating hole switches between the isolating operating hole and the grounding operating hole, the first trigger bar triggers the first microswitch. At this time, the motor does not start when it receives the signal from the first microswitch, which gives priority to manual operation. Manual operation is to ensure that the motor does not start, especially in manual emergency operation, which is more important. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the operating mechanism of the double-hole isolating switch of the utility model;

[0020] Figure 2 It is an exploded schematic diagram of the operating mechanism of the double-hole isolating switch of the utility model;

[0021] Figure 3 yes Figure 1 A schematic diagram of the three-dimensional structure with the panel removed;

[0022] Figure 4 yes Figure 1 A schematic front view of the panel, valve and first mounting plate removed;

[0023] Figure 5 It is a cross-sectional schematic diagram of a valve shift shaft of the operating mechanism of a double-hole isolating switch of the utility model;

[0024] Figure 6 It is a three-dimensional structural diagram of the transmission coordination of the manual operation structure and the electric operation structure of the operating mechanism of the double-hole isolating switch of the utility model;

[0025] In the figure: 1. panel, 1-1. isolation operation hole, 1-2. grounding operation hole, 1-3. operation slide groove, 1-31. circular hole part, 2. valve, 2-1. main operation hole, 2-2. first guide groove, 3. isolation input shaft, 4. grounding input shaft, 5. first gear set, 6. sprocket, 7. first gear, 8. second gear, 9. valve shift shaft, 9-1. shaft core, 9-2. bushing, 9-3. spring, 9-4. limit block, 10. motor, 11. first micro switch, 12. first trigger bar, 12-1. second guide groove, 13. first mounting plate, 14. first guide column, 15. second guide column. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example:

[0028] like Figures 1 to 5As shown, a double-hole isolating switch operating mechanism includes a manual operating structure, which includes a panel 1, a valve 2, an isolating input shaft 3, a grounding input shaft 4, a first gear set 5 and a sprocket 6. A first gear 7 is coaxially arranged on the isolating input shaft 3, and a second gear 8 is coaxially arranged on the grounding input shaft 4. The first gear 7 and the second gear 8 are meshed with each other, and the second gear 8 is connected to the input end of the first gear set 5. The sprocket 6 is connected to the output end of the first gear set 5. The sprocket 6 outputs to the three-phase contacts of the three-position isolating switch, so that the three-phase contacts can be connected, isolated and grounded; the panel 1 is penetrated with an isolating operation hole 1-1, a grounding operation hole 1-2 and an operation slide groove 1-3, and the isolating operation hole 1-1 is connected to the isolating input shaft 3 is relatively arranged, the grounding operation hole 1-2 is relatively arranged with the outer end of the grounding input shaft 4, the main operation hole 2-1 is penetrated on the valve 2, and the valve shaft 9 is arranged on the valve 2, the valve 2 is relatively slidably arranged on the inner side of the panel 1, the valve shaft 9 passes through the operation slide groove 1-3 and is exposed to the panel 1, the valve shaft 9 is moved along the operation slide groove 1-3, and the valve shaft 9 drives the valve 2 to slide relative to the panel 1, so that the main operation hole 2-1 switches between the isolation operation hole 1-1 and the grounding operation hole 1-2, when the valve shaft 9 is in the initial position, the main operation hole 2-1 is located between the isolation operation hole 1-1 and the grounding operation hole 1-2, at this time, the valve 2 simultaneously covers the outer end of the isolation input shaft 3 and the outer end of the grounding input shaft 4.

[0029] In order to make the manual operation process more reliable, stable and safe and improve the manual foolproofing effect, in this embodiment, Figure 5 As shown, the valve shaft 9 includes a shaft core 9-1, a shaft sleeve 9-2 and a spring 9-3. The inner end of the shaft core 9-1 is connected to the valve 2, and the outer end of the shaft core 9-1 passes through the panel 1. The shaft sleeve 9-2 and the spring 9-3 are both slidably sleeved on the outer end of the shaft core 9-1. The outer end of the shaft core 9-1 is connected to a limit block 9-4. The spring 9-3 is located between the shaft sleeve 9-2 and the limit block 9-4. The shaft sleeve 9-2 is pressed against the panel 1 under the action of the spring 9-3. The valve shaft 9 can only be slid by overcoming the elastic force of the spring 9-3 and pulling the shaft sleeve 9-2 outward to separate it from the panel 1, thereby effectively avoiding accidental contact with the valve shaft 9 and causing erroneous operation. Furthermore, in this embodiment, Figure 1 and Figure 2 As shown, the operating groove 1-3 has circular hole portions 1-31 at the middle position and both end positions, and the diameter of the circular hole portion 1-31 is larger than the diameter of the shaft core 9-1, and the diameter of the circular hole portion 1-31 is smaller than the diameter of the sleeve 9-2, which ensures that the valve shift shaft 9 can slide reliably and stably along the operating groove 1-3, and ensures that the valve shift shaft 9 is positioned in the corresponding circular hole portion 1-31 after sliding into place.

[0030] In order to realize that the double-hole isolating switch operating mechanism can be operated manually or electrically, and ensure that the double-hole isolating switch operating mechanism functions reliably and stably, in this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the double-hole isolating switch operating mechanism also includes an electric operating structure, which includes a motor 10, and the output end of the motor 10 is transmission-connected to the second gear 8. Further, in this embodiment, a first mounting plate 13 is provided on the inner side of the valve 2, the isolation input shaft 3 and the grounding input shaft 4 are both provided on the first mounting plate 13, a first guide column 14 is provided on the first mounting plate 13, and a first guide groove 2-2 cooperating with the first guide column 14 is provided on the valve 2 to improve the reliability and stability of the sliding of the valve 2. Further, in this embodiment, the double-hole isolating switch operating mechanism also includes a first micro switch 11 and a first trigger bar 12. The first micro switch 11 is arranged on the first mounting plate 13. The first trigger bar 12 is connected to the valve 2. When the valve shift shaft 9 is in the initial position, the first micro switch 11 is not triggered. When the valve shift shaft 9 drives the valve 2 to slide relative to the panel 1, so that the main operation hole 2-1 switches between the isolation operation hole 1-1 and the grounding operation hole 1-2, the first trigger bar 12 triggers the first micro switch 11. At this time, the motor 10 does not start when receiving the signal of the first micro switch 11, that is, the first micro switch 11 and the first trigger bar 12 give priority to manual operation, especially in manual emergency operation, which is more important. Further, in this embodiment, a second guide column 15 is arranged on the first mounting plate 13, and a second guide groove 12-1 cooperating with the second guide column 15 is opened on the first trigger bar 12 to improve the reliability and stability of the sliding of the first trigger bar 12 and improve the accuracy of triggering the first micro switch 11.

[0031] In this embodiment, when the isolation operation hole 1-1 is aligned with the outer end of the isolation input shaft 3, the isolation input shaft 3 can be rotated by the handle; when the grounding operation hole 1-2 is aligned with the outer end of the grounding input shaft 4, the grounding input shaft 4 can be rotated by the handle; after the operation, the handle is pulled out, and the valve shaft 9 is moved along the operating slide groove 1-3 to reset to the initial position. At this time, the valve 2 simultaneously covers the outer end of the isolation input shaft 3 and the outer end of the grounding input shaft 4, and an independent dedicated handle is used to operate the double-hole isolating switch operating mechanism to further avoid misoperation.

[0032] Here’s how it works:

[0033] First, observe the position indication of the three-position isolating switch to determine whether manual operation is possible; if the conditions for manual operation are met, move the valve shaft 9 along the operating slide groove 1-3 to the corresponding circular hole 1-31, and the valve shaft 9 drives the valve 2 to slide relative to the panel 1, and align the isolation operation hole 1-1 with the outer end of the isolation input shaft 3, or align the grounding operation hole 1-2 with the outer end of the grounding input shaft 4 according to actual operation requirements; when the isolation operation hole 1-1 is aligned with the outer end of the isolation input shaft 3, the isolation input shaft 3 can be rotated by the handle, and the isolation input shaft 3 drives the first gear 7 and the second gear 4 in turn. 8. The first gear set 5 and the sprocket 6 rotate, and the sprocket 6 outputs to the three-phase contacts of the three-position disconnector to realize manual operation; when the grounding operation hole 1-2 is aligned with the outer end of the grounding input shaft 4, the grounding input shaft 4 can be rotated by the handle, and the grounding input shaft 4 drives the second gear 8, the first gear set 5 and the sprocket 6 to rotate in turn, and the sprocket 6 outputs to the three-phase contacts of the three-position disconnector to realize manual operation; after the operation, the handle is pulled out, and the valve shaft 9 is moved along the operating slide groove 1-3 to reset to the initial position. At this time, the valve 2 simultaneously covers the outer ends of the isolation input shaft 3 and the outer ends of the grounding input shaft 4 to complete the manual operation.

[0034] Among them, when the valve shift shaft 9 is in the initial position, the first microswitch 11 is not triggered, and the motor 10 can be started normally according to demand, and the motor 10 drives the second gear 8, the first gear set 5 and the sprocket 6 to rotate in sequence, and the sprocket 6 outputs to the three-phase contacts of the three-position isolating switch, so that the three-phase contacts are connected, isolated and grounded to realize electric operation; when the valve shift shaft 9 drives the valve 2 to slide relative to the panel 1, so that the main operating hole 2-1 switches between the isolation operating hole 1-1 and the grounding operating hole 1-2, the first trigger bar 12 triggers the first microswitch 11. At this time, the motor 10 receives the signal from the first microswitch 11 and does not start, that is, manual operation is given priority. It is more important to ensure the motor during manual operation, especially manual emergency operation.

[0035] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A double-hole isolating switch operating mechanism, characterized in that: The manual operation structure comprises a panel (1), a valve (2), an isolation input shaft (3), a grounding input shaft (4), a first gear set (5) and a sprocket (6); a first gear (7) is coaxially arranged on the isolation input shaft (3); a second gear (8) is coaxially arranged on the grounding input shaft (4); the first gear (7) and the second gear (8) are meshed with each other; the second gear (8) is connected to the input end of the first gear set (5); the sprocket (6) is connected to the output end of the first gear set (5); the sprocket (6) outputs power to the three-phase contacts of the three-position isolation switch, so that the three-phase contacts can perform connection, isolation and grounding movements; The panel (1) is penetrated by an isolation operation hole (1-1), a grounding operation hole (1-2) and an operation slide groove (1-3); the isolation operation hole (1-1) is arranged opposite to the outer end of the isolation input shaft (3); the grounding operation hole (1-2) is arranged opposite to the outer end of the grounding input shaft (4); the valve (2) is penetrated by a main operation hole (2-1); the valve (2) is provided with a valve shift shaft (9); the valve (2) is relatively slidably arranged on the inner side of the panel (1); the valve shift shaft (9) passes through the operation slide groove (1-3) and is exposed to the outside On the panel (1), the valve shift shaft (9) is shifted along the operating slide groove (1-3), and the valve shift shaft (9) drives the valve (2) to slide relative to the panel (1), so that the main operating hole (2-1) switches between the isolation operating hole (1-1) and the grounding operating hole (1-2). When the valve shift shaft (9) is located at the initial position, the main operating hole (2-1) is located between the isolation operating hole (1-1) and the grounding operating hole (1-2), and at this time, the valve (2) simultaneously covers the outer end of the isolation input shaft (3) and the outer end of the grounding input shaft (4).

2. The double-hole isolating switch operating mechanism according to claim 1 is characterized in that: The valve shaft (9) comprises a shaft core (9-1), a shaft sleeve (9-2) and a spring (9-3); the inner end of the shaft core (9-1) is connected to the valve (2); the outer end of the shaft core (9-1) passes through the panel (1); the shaft sleeve (9-2) and the spring (9-3) are both slidably sleeved on the outer end of the shaft core (9-1); the outer end of the shaft core (9-1) is connected to a limiting block (9-4); the spring (9-3) is located between the shaft sleeve (9-2) and the limiting block (9-4); and the shaft sleeve (9-2) is pressed against the panel (1) under the action of the spring (9-3).

3. The double-hole isolating switch operating mechanism according to claim 2 is characterized in that: The operating slide groove (1-3) has circular hole portions (1-31) at the middle position and at both ends, the diameter of the circular hole portion (1-31) is larger than the diameter of the shaft core (9-1), and the diameter of the circular hole portion (1-31) is smaller than the diameter of the shaft sleeve (9-2).

4. The double-hole isolating switch operating mechanism according to claim 1 is characterized in that: A first mounting plate (13) is arranged on the inner side of the valve (2); the isolation input shaft (3) and the grounding input shaft (4) are both arranged on the first mounting plate (13); a first guide column (14) is arranged on the first mounting plate (13); and a first guide groove (2-2) cooperating with the first guide column (14) is provided on the valve (2).

5. The double-hole isolating switch operating mechanism according to claim 4 is characterized in that: The double-hole isolating switch operating mechanism also includes an electric operating structure, which includes a motor (10), and the output end of the motor (10) is transmission-connected to the second gear (8).

6. The double-hole isolating switch operating mechanism according to claim 5 is characterized in that: The double-hole isolating switch operating mechanism also includes a first micro switch (11) and a first trigger bar (12). The first micro switch (11) is arranged on a first mounting plate (13). The first trigger bar (12) is connected to a valve (2). When the valve shift shaft (9) is located at an initial position, the first micro switch (11) is not triggered. When the valve shift shaft (9) drives the valve (2) to slide relative to the panel (1), so that the main operating hole (2-1) switches between an isolating operating hole (1-1) and a grounding operating hole (1-2), the first trigger bar (12) triggers the first micro switch (11). At this time, the motor (10) does not start when it receives a signal from the first micro switch (11).

7. The double-hole isolating switch operating mechanism according to claim 6 is characterized in that: The first mounting plate (13) is provided with a second guide column (15), and the first trigger bar (12) is provided with a second guide groove (12-1) that matches the second guide column (15).

8. The double-hole isolating switch operating mechanism according to any one of claims 1 to 7, characterized in that: When the isolation operation hole (1-1) is aligned with the outer end of the isolation input shaft (3), the isolation input shaft (3) can be rotated by a handle; when the grounding operation hole (1-2) is aligned with the outer end of the grounding input shaft (4), the grounding input shaft (4) can be rotated by a handle; after the operation, the handle is pulled out, and the valve shaft (9) is moved along the operation slide groove (1-3) to reset to the initial position, at which time the valve (2) simultaneously covers the outer ends of the isolation input shaft (3) and the outer ends of the grounding input shaft (4).

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