Disconnector operating mechanism and working method thereof

Abstract

The present invention relates to an isolating switch operating mechanism, comprising an isolating operating shaft, a grounding operating shaft, an energy storage spring, an indicating shaft, an output shaft and an isolating switch; an upper limit mechanism is arranged between the isolating operating shaft and the indicating shaft; within the stroke of the isolating operating shaft driving the upper crank arm to perform energy storage rotation, the upper limit mechanism is suitable for limiting the rotation of the indicating shaft, so as to limit the rotation of the output shaft. A working method of an isolating switch operating mechanism, adopting the above-mentioned isolating switch operating mechanism to perform isolating closing operation and grounding closing operation. By means of the additional upper limit mechanism, the main shaft in the isolating switch is limited to rotate toward the grounding opening position due to its own weight, thereby improving the safety of the mechanism. By means of the additional lower limit mechanism, the main shaft in the isolating switch is limited to rotate toward the grounding opening position in advance due to its own weight, thereby improving the safety of the mechanism.

Description

Technical Field

[0001] The invention relates to an isolating switch operating mechanism and a working method thereof. Background Art

[0002] like Figure 1 Figure 2 Figure 3 As shown; the conventional isolating switch operating mechanism includes an isolating operating shaft 21, a grounding operating shaft 22, an output shaft 24, an indicating shaft 23, an energy storage spring 3, an upper crank arm 31, a lower crank arm 32, an output cam 5, an upper driving rod 41, a lower driving rod 42 and a synchronous gear assembly 6; the matching connection and working principle relationship of each component are as follows:

[0003] An upper crank arm 31 is provided on the isolation operation shaft 21 for driving the upper crank arm 31 to rotate, and a lower crank arm 32 is provided on the grounding operation shaft 22 for driving the lower crank arm 32 to rotate; the upper end of the energy storage spring 3 is connected to the upper crank arm 31, and the lower end of the energy storage spring 3 is connected to the lower crank arm 32; when the isolation operation shaft 21 performs isolation closing or isolation opening operations, it is necessary to first drive the upper crank arm 31 to perform energy storage rotation (i.e., compress the energy storage spring 3), and when the upper crank arm 31 rotates through the three-point straight line position, the upper crank arm 31 continues to rotate under the energy release force of the energy storage spring 3;

[0004] Similarly, when the grounding operating shaft 22 performs grounding closing and grounding opening operations, it is also necessary to first drive the lower crank arm 32 to perform energy storage rotation (i.e., compress the energy storage spring 3). After the lower crank arm 32 rotates through the three-point straight line position, the energy storage spring 3 begins to release energy, driving the lower crank arm 32 to continue rotating under the energy release force of the energy storage spring 3.

[0005] The output shaft 24 is fixedly arranged on the output cam 5, the output shaft 24 is connected to the main shaft of the isolating switch, and the output shaft 24 is connected to the grounding shaft through a synchronous gear assembly 6, so that the output shaft 24 and the indicating shaft 23 rotate synchronously;

[0006] The output cam 5 is provided with two slide grooves, an upper slide groove and a lower slide groove. The upper slide groove cooperates with the pin of the upper driving rod 41 , and the lower slide groove cooperates with the pin of the lower driving rod 42 .

[0007] The upper driving rod 41 is rotatably set on the isolation operating shaft 21. There is a rotation space for the upper driving rod 41 on the isolation operating shaft 21 relative to the upper crank arm 31. The pin shaft of the upper crank arm 31 is blocked and matched with the upper driving rod 41. The pin shaft of the upper driving rod 41 is located in the upper sliding groove of the output cam 5 and forms a blocking fit with the output cam 5. The isolation operating shaft 21 drives the output cam 5 to rotate through the upper crank arm 31 and the upper driving rod 41.

[0008] The lower driving rod 42 is rotatably set on the grounding operating shaft 22. There is a rotation space for the lower driving rod 42 on the grounding operating shaft 22 relative to the lower crank arm 32. The pin shaft of the lower crank arm 32 is blocked and matched with the lower driving rod 42. The pin shaft of the lower driving rod 42 is located in the lower sliding groove of the output cam 5 and forms a blocking fit with the output cam 5. The grounding operating shaft 22 drives the output cam 5 to rotate through the lower crank arm 32 and the lower driving rod 42.

[0009] like Figure 4 Figure 5 Figure 6 As shown, the isolating switch includes a main shaft 71, a knife rod 72, an upper static contact seat 74 and a grounding contact 73. The main shaft 71 is connected to the output shaft 24 of the isolating switch mechanism. The main shaft 71 drives the knife rod 72 to rotate between the upper static contact seat 74 and the grounding contact 73. When the main shaft 71 drives the knife rod 72 to contact the upper static contact seat 74, the isolating switch is closed. When the main shaft 71 drives the knife rod 72 to contact the grounding contact 73, the isolating switch is in the grounding closed state. When the main shaft 71 drives the knife rod 72 to be in the middle position between the upper static contact seat 74 and the grounding contact 73, the isolating switch is opened. The specific working principle of the isolating switch can refer to our company's prior patent (CN213242381U integrated load switch).

[0010] The function of the entire isolating switch operating mechanism is to reciprocate the output shaft 24 between the three positions, and finally drive the main shaft 71 of the isolating switch to reciprocate between the three positions, that is, the switch is closed, the switch is opened (also in the grounding open position) and the grounding is closed.

[0011] The existing problem is that when the isolating switch is used on the environmental protection cabinet, the knife rod 72 will be made relatively large, and the weight of the three knives added together will reach more than ten pounds. When the knife rod 72 of the isolating switch is in the middle position, that is, the switch is open (and is also in the grounding open position), if the isolating operating shaft 21 rotates to isolate and close (that is, the knife rod 72 needs to rotate upward from the middle), then the isolating operating shaft 21 will drive the upper crank arm 31 to perform energy storage rotation first (first compress the energy storage spring 3), and at this time the pin shaft of the upper crank arm 31 will leave the upper driving rod 41 (that is, it will no longer block and connect the upper driving rod 41), and at this time the upper driving rod 41 is not subject to the restraining force, then the gravity of the knife rod 72 will begin to work. , the knife rod 72 starts to rotate downward, that is, rotates toward the grounding closing position, and the knife rod 72 will be close to the grounding contact 73. If the distance is close enough, discharge will occur when the knife rod 72 is charged with high voltage; until the upper crank arm 31 continues to rotate through the three-point straight line position, the energy storage spring 3 starts to release energy, and then starts to drive the upper crank arm 31 to release energy and rotate. At this time, the stop pin of the upper crank arm 31 will continue to block the upper drive rod 41, thereby restoring the restraining force on the upper drive rod 41, and as the upper crank arm 31 rotates to the isolation closing position, the knife rod 72 is driven to contact the upper static contact seat 74 through the upper drive rod 41, the output cam 5, the output shaft 24, and the main shaft 71, thereby realizing the isolation switch closing.

[0012] Similarly, when the isolating switch is switched from the grounding opening position to the grounding closing position, that is, the knife rod 72 rotates downward from the middle position until it contacts the grounding contact 73, then the grounding operating shaft 22 must be rotated, and the grounding operating shaft 22 will drive the lower crank arm 32 to perform energy storage rotation first (first compress the energy storage spring 3), at this time, the pin shaft of the lower crank arm 32 will leave the lower drive rod 42 (that is, it will no longer block the lower drive rod 42), and at this time, the lower drive rod 42 is not subject to any restraining force, then the gravity of the knife rod 72 will begin to work, and the knife rod 72 will rotate downward in advance, that is, rotate to the grounding closing position, and the knife rod 72 It will first approach the grounding contact 73. If the distance is close enough, discharge will occur when the knife rod 72 is charged with high voltage. Until the lower crank arm 32 continues to rotate through the three-point straight line position, the energy storage spring 3 begins to release energy and starts to drive the lower crank arm 32 to rotate to release energy. At this time, the stop pin of the lower crank arm 32 will continue to block the lower drive rod 42, thereby restoring the restraining force on the lower drive rod 42. As the lower crank arm 32 rotates to the ground closing position, the knife rod 72 is driven to contact the grounding contact 73 through the lower drive rod 42, the output cam 5, the output shaft 24, and the main shaft 71, thereby realizing the isolated ground closing.

[0013] Therefore, in summary, the existing isolating switch operating mechanism has a problem that when the isolating switch is in the isolating opening position (also the grounding opening position), during the period when the isolating operating shaft 21 drives the upper crank arm 31 to perform energy storage rotation or the grounding operating shaft 22 drives the lower crank arm 32 to perform energy storage rotation, due to the lack of constraints on the upper driving rod 41 and the lower driving rod 42, the knife rod 72 of the isolating switch will fall to the grounding closing position due to its own weight, causing a safety hazard. Summary of the invention

[0014] The technical problem to be solved by the present invention is: to overcome the shortcomings of the prior art, to provide an isolating switch operating mechanism and a working method thereof, to solve the problem that during the period when the isolating operating shaft drives the upper crank arm to perform energy storage rotation or the grounding operating shaft drives the lower crank arm to perform energy storage rotation, due to the lack of constraints on the upper driving rod and the lower driving rod, the knife rod of the isolating switch will fall to the grounding closing position due to its own weight, causing a safety hazard.

[0015] The technical solution adopted by the present invention to solve the technical problem is:

[0016] First aspect:

[0017] Provided is an isolating switch operating mechanism, comprising:

[0018] Isolating the operating shaft, grounding the operating shaft, energy storage spring, indicating shaft and output shaft;

[0019] An upper crank arm is arranged on the isolation operation shaft, a lower crank arm is arranged on the grounding operation shaft, and an energy storage spring is arranged between the upper crank arm and the lower crank arm;

[0020] The indicating shaft rotates synchronously with the output shaft, and the output shaft is fixedly connected to the main shaft of the isolating switch;

[0021] An upper limit mechanism is provided between the isolation operation shaft and the indicating shaft;

[0022] The isolation operation shaft is within the range of driving the upper crank arm to perform energy storage rotation, and the upper limit mechanism is suitable for limiting the rotation of the indicating shaft to limit the rotation of the output shaft.

[0023] Furthermore, the upper limit mechanism includes an upper limit cam, an upper limit rod and a ratchet;

[0024] The upper limit cam is fixed on the isolation operation shaft, and the ratchet is fixed on the indication shaft;

[0025] The upper limit rod is arranged to rotate elastically, the upper end of the upper limit rod is in sliding contact with the upper limit cam, and the lower end of the upper limit rod is in sliding contact with the ratchet wheel;

[0026] Within the energy storage rotation stroke of the isolation operating shaft, the upper limit cam abuts against the ratchet wheel via the upper limit rod to limit the rotation of the indicating shaft;

[0027] After the isolation operation shaft rotates to the energy release rotation stroke, the ratchet wheel is freed from the restriction of the upper limit rod.

[0028] Furthermore, a lower limit mechanism is provided between the grounding operation shaft and the indicating shaft;

[0029] The grounding operation shaft is within the range of driving the lower crank arm to perform energy storage rotation, and the lower limit mechanism is suitable for limiting the rotation of the indicating shaft to limit the rotation of the output shaft.

[0030] Furthermore, the lower limit mechanism includes a lower limit cam, a lower limit rod and a ratchet;

[0031] The lower limit cam is fixed on the grounding operation shaft, and the ratchet is fixed on the indicating shaft;

[0032] The lower limit rod is elastically rotatable, the lower end of the lower limit rod is slidably abutted against the lower limit cam, and the upper end of the lower limit rod is slidably abutted against the ratchet wheel;

[0033] Within the energy storage rotation stroke of the grounding operation shaft, the lower limit cam abuts against the ratchet wheel via the lower limit rod to limit the rotation of the indicating shaft;

[0034] After the grounding operation shaft rotates to the energy release rotation stroke, the ratchet wheel is free from the restriction of the lower limit rod.

[0035] Second aspect:

[0036] A working method of an isolating switch operating mechanism is provided, using the above-mentioned isolating switch operating mechanism, comprising:

[0037] Isolation and closing operation:

[0038] When the isolation operating shaft rotates from the isolation opening to the isolation closing, within the energy storage stroke of the isolation operating shaft, the upper limit cam abuts against the ratchet through the upper limit rod to limit the rotation of the indicating shaft. After the isolation operating shaft enters the energy release stroke, the upper limit rod is freed from the restriction on the ratchet.

[0039] Earthing closing operation:

[0040] When the grounding operating shaft rotates from grounding opening to grounding closing, within the energy storage stroke of the grounding operating shaft, the lower limit cam abuts against the ratchet through the lower limit rod to limit the rotation of the indicating shaft. After the grounding operating shaft enters the energy release stroke, the lower limit rod disengages from the restriction on the ratchet.

[0041] The beneficial effects of the present invention are:

[0042] The present invention provides an isolating switch operating mechanism and a working method thereof. By means of an additional upper limit mechanism, the isolating operating shaft can limit the rotation of the indicating shaft within the stroke of driving the upper crank arm to perform energy storage rotation during the rotation from the isolating opening position to the isolating closing position, thereby limiting the main shaft in the isolating switch from rotating toward the grounding opening position due to its own weight, thereby improving the safety of the mechanism.

[0043] By relying on the added lower limit mechanism, the grounding operating shaft can limit the rotation of the indicating shaft within the stroke of driving the lower crank arm to perform energy storage rotation during the rotation from the grounding opening position to the grounding closing position, thereby limiting the main shaft in the disconnector from rotating to the grounding opening position in advance due to its own weight, thereby improving the safety of the mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The present invention is further described below in conjunction with the accompanying drawings.

[0045] Figure 1 Figure 2 Figure 3 It is a schematic diagram of the traditional disconnect switch operating mechanism;

[0046] Figure 4 This is a schematic diagram of the isolating switch in the isolating open position (also the grounding open position);

[0047] Figure 5 It is a schematic diagram of the isolating switch in the isolating closed position;

[0048] Figure 6 It is a schematic diagram of the disconnector in the earthed closed position;

[0049] Figure 7 Figure 8 It is a schematic diagram of the isolating switch operating mechanism of the present invention being in the isolating opening position (grounding opening position);

[0050] Fig. 9 Fig.10 It is a schematic diagram of the isolating switch operating mechanism of the present invention being in the isolating closing position;

[0051] Fig.11 Fig.12 It is a schematic diagram of the operating mechanism of the isolating switch of the present invention being in the grounding closing position;

[0052] Among them, 21, isolation operating shaft, 22, grounding operating shaft, 23, indicating shaft, 24, output shaft, 3, energy storage spring, 31, upper crank arm, 32, lower crank arm, 41, upper driving rod, 42, lower driving rod, 5, output cam, 6, synchronous gear assembly;

[0053] 71. spindle, 72. tool bar, 73. grounding contact, 74. upper stationary contact seat;

[0054] 81. upper limit cam, 82. upper limit rod, 83. ratchet, 84. lower limit cam, 85. lower limit rod. DETAILED DESCRIPTION

[0055] The present invention will now be further described in conjunction with specific embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0056] Embodiment 1

[0057] like Figures 1 to 12 As shown, an isolating switch operating mechanism includes an isolating operating shaft 21, a grounding operating shaft 22, an energy storage spring 3, an indicating shaft 23, an output cam 5, an upper driving rod 41, a lower driving rod 42 and an output shaft 24;

[0058] An upper crank arm 31 is disposed on the isolation operation shaft 21, a lower crank arm 32 is disposed on the grounding operation shaft 22, and an energy storage spring 3 is disposed between the upper crank arm 31 and the lower crank arm 32;

[0059] The upper driving rod 41 is sleeved on the isolation operation shaft 21, and a blocking fit is formed between the upper driving rod 41 and the upper crank arm 31 via the pin shaft, and a blocking sliding fit is formed between the pin shaft of the upper driving rod 41 and the upper slide groove of the output cam 5;

[0060] A synchronous gear assembly 6 is connected between the indication shaft 23 and the output shaft 24 so that the indication shaft 23 and the output shaft 24 rotate synchronously. The output shaft 24 is fixedly connected to the isolating switch main shaft 71.

[0061] An upper limit mechanism is provided between the isolation operation shaft 21 and the indication shaft 23;

[0062] When the isolation operation shaft 21 drives the upper crank arm 31 to perform energy storage rotation, the upper limit mechanism is suitable for limiting the rotation of the indicating shaft 23 to limit the rotation of the output shaft 24 .

[0063] Specifically, as an optional implementation in this embodiment, Figures 7 to 12 As shown, the upper limit mechanism includes an upper limit cam 81, an upper limit rod 82 and a ratchet 83;

[0064] The upper limit cam 81 is fixed on the isolation operation shaft 21, and the ratchet 83 is fixed on the indication shaft 23;

[0065] The upper limit rod 82 is arranged to be elastically rotatable, the upper end of the upper limit rod 82 is in sliding contact with the upper limit cam 81, and the lower end of the upper limit rod 82 is in sliding contact with the ratchet 83;

[0066] When the isolation operating mechanism performs isolation closing, within the energy storage rotation stroke of the isolation operating shaft 21, the upper limit cam 81 abuts against the ratchet 83 via the upper limit rod 82 to limit the rotation of the indication shaft 23. At this time, the indication shaft 23 is restricted from rotating, and the output shaft 24 is also restricted from rotating via the synchronous gear assembly 6, and finally the main shaft 71 and the knife rod 72 in the isolation switch are restricted from rotating, so that the knife rod 72 is stabilized in the isolation opening position, and the knife rod 72 is prevented from rotating downward due to its own weight and causing danger;

[0067] After the isolation operating shaft 21 drives the upper crank arm 31 to rotate to the energy release rotation stroke (that is, the upper crank arm 31 rotates through a straight line between three points), the ratchet 83 breaks away from the restriction of the upper limit rod 82. At this time, the energy release force of the energy storage spring 3 quickly drives the upper crank arm 31 to perform an energy release rotation. The upper crank arm 31 finally drives the main shaft 71 to perform an isolation closing rotation via the upper drive rod 41, the output cam 5, and the output shaft 24, so that the knife rod 72 rotates upward to be plugged into and contacted with the upper static contact seat 74.

[0068] Specifically, as an optional implementation in this embodiment, a lower limit mechanism is provided between the grounding operation shaft 22 and the indication shaft 23;

[0069] When the grounding operation shaft 22 drives the lower crank arm 32 to perform energy storage rotation, the lower limit mechanism is suitable for limiting the rotation of the indicating shaft 23 to limit the rotation of the output shaft 24 .

[0070] A lower driving rod 42 is provided on the grounding operating shaft 22, and the lower driving rod 42 is engaged with the lower crank arm 32 through a pin shaft, and the pin shaft of the lower driving rod 42 cooperates with the lower sliding groove of the output cam 5 to form an engagement with the output cam 5; when the lower crank arm 32 rotates, the output cam 5 can be driven to rotate through the lower driving rod 42.

[0071] Specifically, as an optional implementation in this embodiment, Figures 7 to 12 As shown, the lower limit mechanism includes a lower limit cam 84, a lower limit rod 85 and a ratchet 83;

[0072] In this embodiment, the ratchet wheel 83 of the lower limit mechanism is the same as the ratchet wheel 83 of the upper limit mechanism;

[0073] The lower limit cam 84 is fixed on the grounding operation shaft 22, and the ratchet wheel 83 is fixed on the indicating shaft 23;

[0074] The lower limit rod 85 is elastically rotatable, the lower end of the lower limit rod 85 is in sliding contact with the lower limit cam 84, and the upper end of the lower limit rod 85 is in sliding contact with the ratchet 83;

[0075] When the grounding operation shaft 22 is grounded and closed, within the energy storage rotation stroke of the grounding operation shaft 22, the lower limit cam 84 abuts against the ratchet 83 via the lower limit rod 85 to limit the rotation of the indicating shaft 23; similarly, at this time, the indicating shaft 23 is restricted from rotating, and the output shaft 24 is also restricted from rotating via the synchronous gear assembly 6, and finally the main shaft 71 and the knife rod 72 in the disconnector are restricted from rotating, so that the knife rod 72 is stabilized in the disconnecting and opening position, and the knife rod 72 is prevented from rotating downward due to its own weight and causing danger;

[0076] After the grounding operating shaft 22 drives the lower crank arm 32 to rotate to the energy release rotation stroke (i.e., the lower crank arm 32 rotates through a straight line between three points), the ratchet 83 breaks away from the restriction of the lower limit rod 85; at this time, the energy release force of the energy storage spring 3 drives the lower crank arm 32 to rotate rapidly, and the lower crank arm 32 finally drives the main shaft 71 and the guide rod of the isolating switch to rotate downward and contact the grounding contact 73 through the lower drive rod 42, the output cam 5, and the output shaft 24.

[0077] Embodiment 2

[0078] A working method of an isolating switch operating mechanism, using the isolating switch operating mechanism of the first embodiment, including an isolating closing operation and a grounding closing operation;

[0079] like Figure 7 Figure 8 As shown, the isolating operating mechanism is in the isolating opening position (grounding opening position), and the isolating switch is in the following Figure 4 state; the lower end of the upper limit rod 82 in the upper limit mechanism of the isolation operating mechanism presses against the ratchet 83 to limit the indicating shaft 23, thereby limiting the downward rotation of the isolating switch bar 72 and the main shaft 71 due to gravity; the lower limit rod 85 in the first limit mechanism presses against the ratchet 83 and also limits the indicating shaft 23, thereby limiting the upward rotation of the isolating switch bar 72 and the main shaft 71, and then the isolation closing operation and the grounding closing operation are respectively performed.

[0080] Isolation and closing operation:

[0081] When the isolation operating shaft 21 rotates from the isolation opening to the isolation closing, within the energy storage stroke of the isolation operating shaft 21 driving the upper crank arm 31, the upper limit cam 81 abuts against the ratchet 83 via the upper limit rod 82 to limit the rotation of the indicating shaft 23. After the isolation operating shaft 21 drives the upper crank arm 31 to rotate through the three-point-one-line position, the upper crank arm 31 enters the energy release stroke, and the upper limit rod 82 is freed from the restriction on the ratchet 83. The energy storage spring 3 starts to release energy, driving the upper crank arm 31 to release energy and rotate. The upper crank arm 31 drives the isolation switch main shaft 71 and the knife rod 72 to rotate to the position as shown in the figure. Figure 5 The isolation operating mechanism becomes as shown in the state Fig. 9 Fig.10 Status shown.

[0082] The so-called three-point line in the isolation closing operation specifically refers to: the isolation operation shaft 21 is the first point, the connecting shaft between the upper end of the energy storage spring 3 and the upper crank arm 31 is the second point, and the connecting shaft between the lower end of the energy storage spring 3 and the lower crank arm 32 is the third point.

[0083] Earthing closing operation:

[0084] When the grounding operation shaft 22 rotates from the grounding opening to the grounding closing, within the energy storage stroke of the grounding operation shaft 22 driving the lower crank arm 32, the lower limit cam 84 abuts against the ratchet 83 via the lower limit rod 85 to limit the rotation of the indicating shaft 23. After the grounding operation shaft 22 drives the lower crank arm 32 to rotate through the three-point-one-line position and enters the energy release stroke, the lower limit rod 85 breaks away from the restriction on the ratchet 83, and the energy storage spring 3 releases energy to drive the lower crank arm 32 to release energy and rotate. The lower crank arm 32 drives the isolating switch main shaft 71 and the knife rod 72 to rotate to the position as shown in the figure. Figure 6 The isolation operating mechanism becomes as shown in the state Fig.11 Fig.12 Status shown.

[0085] The so-called three-point one-line in the grounding closing operation specifically refers to: the grounding operation axis 22 is the first point, the connecting axis between the lower end of the energy storage spring 3 and the lower crank arm 32 is the second point, and the connecting axis between the upper end of the energy storage spring 3 and the upper crank arm 31 is the third point.

[0086] The isolation and opening operations and the earthing and opening operations do not have the problems that exist in the isolation and closing operations; therefore, when the knife rod 72 is in the isolation and opening position, the knife rod 72 and the upper static contact seat 74 are plugged together, and there is friction between the knife rod 72 and the upper static contact seat 74. At this time, if the isolation and opening operation is rotated, within the energy storage stroke of the upper crank arm 31, even if the upper crank arm 31 is disengaged from the upper driving rod 41, the friction between the knife rod 72 and the upper static contact seat 74 will not cause the knife rod 72 to fall off.

[0087] Similarly, during the grounding and opening operation, the knife rod 72 itself is plugged into and contacted with the grounding contact 73. At this time, the grounding operating shaft 22 is within the energy storage stroke of the upper crank arm 31. Even if the lower crank arm 32 is disengaged from the lower driving rod 42, the friction between the knife rod 72 and the lower static contact seat will not cause the knife rod 72 to fall off.

[0088] The isolating switch operating mechanism of the present invention is mainly used in the isolating closing operation and the earthing closing operation. By relying on the added upper limit mechanism, the isolating operating shaft 21 can limit the rotation of the indicating shaft 23 within the stroke of driving the upper crank arm 31 to perform energy storage rotation during the rotation from the isolating opening position to the isolating closing position, thereby limiting the main shaft 71 in the isolating switch from rotating toward the earthing opening position due to its own weight, thereby improving the safety of the mechanism.

[0089] By relying on the additional lower limit mechanism, the grounding operating shaft 22 can limit the rotation of the indicating shaft 23 within the stroke of driving the lower crank arm 32 to perform energy storage rotation during the rotation from the grounding opening position to the grounding closing position, thereby limiting the main shaft 71 in the disconnector from rotating to the grounding opening position in advance due to its own weight, thereby improving the safety of the mechanism.

[0090] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An isolating switch operating mechanism, characterized in that: include Isolating operating shaft, grounding operating shaft, energy storage spring, indicating shaft, output shaft and isolating switch; An upper crank arm is arranged on the isolation operation shaft, a lower crank arm is arranged on the grounding operation shaft, and an energy storage spring is arranged between the upper crank arm and the lower crank arm; The indicating shaft rotates synchronously with the output shaft, and the output shaft is fixedly connected to the main shaft of the isolating switch; An upper limit mechanism is provided between the isolation operation shaft and the indicating shaft; The isolation operation shaft is within the range of driving the upper crank arm to perform energy storage rotation, and the upper limit mechanism is suitable for limiting the rotation of the indicating shaft to limit the rotation of the output shaft; The upper limit mechanism comprises an upper limit cam, an upper limit rod and a ratchet; The upper limit cam is fixed on the isolation operation shaft, and the ratchet is fixed on the indication shaft; The upper limit rod is arranged to rotate elastically, the upper end of the upper limit rod is in sliding contact with the upper limit cam, and the lower end of the upper limit rod is in sliding contact with the ratchet wheel; Within the energy storage rotation stroke of the isolation operating shaft, the upper limit cam abuts against the ratchet wheel via the upper limit rod to limit the rotation of the indicating shaft; After the isolation operating shaft rotates to the energy release rotation stroke, the ratchet wheel is freed from the restriction of the upper limit rod; A synchronous gear assembly is connected between the indicating shaft and the output shaft so that the indicating shaft and the output shaft rotate synchronously.

2. The isolating switch operating mechanism according to claim 1, characterized in that: A lower limit mechanism is provided between the grounding operation shaft and the indicating shaft; The grounding operation shaft is within the range of driving the lower crank arm to perform energy storage rotation, and the lower limit mechanism is suitable for limiting the rotation of the indicating shaft to limit the rotation of the output shaft.

3. The isolating switch operating mechanism according to claim 2, characterized in that: The lower limit mechanism comprises a lower limit cam, a lower limit rod and a ratchet; The lower limit cam is fixed on the grounding operation shaft, and the ratchet is fixed on the indicating shaft; The lower limit rod is elastically rotatable, the lower end of the lower limit rod is slidably abutted against the lower limit cam, and the upper end of the lower limit rod is slidably abutted against the ratchet wheel; Within the energy storage rotation stroke of the grounding operation shaft, the lower limit cam abuts against the ratchet wheel via the lower limit rod to limit the rotation of the indicating shaft; After the grounding operation shaft rotates to the energy release rotation stroke, the ratchet wheel is free from the restriction of the lower limit rod.

4. A method for operating an isolating switch operating mechanism, characterized in that: The isolating switch operating mechanism according to claim 3 comprises: Isolation and closing operation: When the isolation operating shaft rotates from the isolation opening to the isolation closing, within the energy storage stroke of the isolation operating shaft, the upper limit cam abuts against the ratchet through the upper limit rod to limit the rotation of the indicating shaft. After the isolation operating shaft enters the energy release stroke, the upper limit rod is freed from the restriction on the ratchet. Earthing closing operation: When the grounding operating shaft rotates from grounding opening to grounding closing, within the energy storage stroke of the grounding operating shaft, the lower limit cam abuts against the ratchet through the lower limit rod to limit the rotation of the indicating shaft. After the grounding operating shaft enters the energy release stroke, the lower limit rod disengages from the restriction on the ratchet.

Images