Combined electrical mechanism

Abstract

The present invention relates to a combined electrical mechanism, comprising an input shaft, an intermediate shaft, a crank arm shaft, a half shaft and an output cam; the crank arm shaft is connected to a closing energy storage spring; an isolation dial and a driving wheel are sleeved on the input shaft, the isolation dial is connected to an opening energy storage spring, and the driving wheel is connected to an output cam; a closing transmission mechanism is arranged between the crank arm shaft and the driving wheel; an opening energy storage mechanism is arranged between the intermediate shaft and the isolation dial; a lock is arranged on the half shaft; the opening energy storage spring releases energy, drives the isolation dial to rotate in the opposite direction, and the isolation dial drives the output cam to perform an opening operation via the driving wheel. The combined electrical mechanism of the present invention is more stable and reliable for closing and opening operations.

Description

Technical Field

[0001] The invention relates to the field of electric power equipment, and in particular to a combined electrical appliance mechanism. Background Art

[0002] The combination electrical appliance is used to connect the load switch and output the rotational force of closing, opening and grounding (grounding opening and grounding closing) to the load switch.

[0003] The existing combined electrical mechanism can refer to the patent previously applied for by our company, the patent name: load switch capable of storing energy and quickly opening, patent number: 201921184693.9; in this patent, an energy storage mechanism is added to the first operating shaft, the energy storage mechanism includes a disc spring and an energy storage spring, the disc spring is directly arranged outside the first operating shaft, and the energy storage spring is connected to the first operating shaft through a driving lever.

[0004] The problem with the energy storage mechanism in this load switch is that when the first operating shaft is stationary, it is simultaneously acted upon by the disc spring and the energy storage spring, and the elastic forces of the disc spring and the energy storage spring affect each other. In practice, the torsion force provided by the disc spring to the first operating shaft is much smaller than the torsion force provided by the energy storage spring to the first operating shaft. If the force of the energy storage spring is much greater than the force of the disc spring, when the disc spring releases energy to drive the first operating shaft to rotate to open the switch, the opening force will be insufficient and the opening will not be in place.

[0005] In the past, in order to take into account the influence of the energy storage spring on the coil spring, some energy storage springs with smaller elastic force were selected. However, if the elastic force of the energy storage spring itself is too small, it will affect the energy storage spring's closing operation on the first operating shaft.

[0006] Therefore, in summary, in the conventional load switch mechanism, the disc spring and the energy storage spring connected to the first operating shaft will affect each other, causing the disc spring to be unable to perform an effective opening operation on the first operating shaft. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a combined electrical appliance mechanism to solve the problem that the combined electrical appliance cannot stably output the opening rotation force due to the small rotation force of the coil spring in the previous combined electrical appliance mechanism.

[0008] The technical solution adopted by the present invention to solve the technical problem is:

[0009] A combined electrical device is provided, comprising:

[0010] Input shaft, intermediate shaft, crankshaft, half shaft and output cam;

[0011] The input shaft, the intermediate shaft and the crank arm shaft rotate synchronously;

[0012] The crank arm shaft is connected to the closing energy storage spring;

[0013] The input shaft is sleeved with an isolation paddle wheel and a driving wheel, the isolation paddle wheel is connected to the opening energy storage spring, the driving wheel is connected to the output cam, and the driving wheel is suitable for driving the output cam to perform opening or closing movement;

[0014] A closing transmission mechanism is arranged between the crank arm shaft and the driving wheel, and the crank arm shaft drives the driving wheel to rotate through the closing transmission mechanism to drive the output cam to perform a closing operation;

[0015] A switch-off energy storage mechanism is arranged between the intermediate shaft and the isolation dial, and the intermediate shaft drives the isolation dial to rotate through the switch-off energy storage mechanism to drive the switch-off energy storage spring to store energy;

[0016] A lock is provided on the half shaft, and when the isolation thumbwheel rotates to make the opening energy storage spring complete energy storage, the lock of the half shaft locks the isolation thumbwheel;

[0017] The opening brake energy storage spring releases energy to drive the isolation dial to rotate in the opposite direction, and the isolation dial drives the output cam to perform the opening brake operation through the driving wheel.

[0018] Furthermore, the closing transmission mechanism includes a crank arm cam, a transmission shaft, a closing roller crank arm, a closing transmission crank arm and a connecting rod;

[0019] The crank arm cam is arranged on the crank arm shaft, the closing roller crank arm and the closing transmission crank arm are arranged on the transmission shaft, the two ends of the connecting rod are respectively connected to the closing transmission crank arm and the driving wheel, and the crank arm cam cooperates with the closing roller crank arm.

[0020] Furthermore, the opening brake energy storage mechanism comprises a first intermediate cam and a first isolation stop pin, wherein the first intermediate cam is arranged on the intermediate shaft, and the first isolation stop pin is arranged on the isolation dial wheel;

[0021] The intermediate shaft rotates synchronously with the crank arm shaft, and drives the isolation dial wheel to rotate to open the gate and store energy through the first intermediate cam and the first isolation stop pin.

[0022] Furthermore, it also includes a gate-opening limit column for fixed setting;

[0023] When the isolation thumbwheel rotates to abut against the opening limit column for opening the gate, the isolation thumbwheel drives the output cam through the driving wheel to complete the opening operation.

[0024] Furthermore, a second isolation stop pin is provided on the isolation dial wheel, and the second isolation stop pin cooperates with the bayonet on the driving wheel. When the isolation dial wheel rotates to open the gate, the second isolation stop pin drives the driving wheel to rotate to open the gate.

[0025] Furthermore, a driving stop pin is provided on the driving wheel, a sliding groove is provided on the output cam, and the driving stop pin is located in the sliding groove.

[0026] Furthermore, a mechanism for preventing reclosing is provided between the intermediate shaft and the isolation dial;

[0027] The anti-reclosing mechanism comprises a second intermediate cam and a third isolation stop pin, wherein the second intermediate cam is arranged on the intermediate shaft, and the third isolation stop pin is arranged on the isolation dial wheel;

[0028] After the isolation dial rotates to drive the opening energy storage spring to complete energy storage, the third isolation stop pin of the isolation dial abuts against the middle cam, and the middle cam restricts the isolation dial from continuing to rotate.

[0029] Furthermore, the cross-section of the crank arm shaft is a V-shaped structure, and a ratchet is provided on one side of the crank arm shaft;

[0030] The ratchet pawl cooperates with the V-shaped opening of the crank arm shaft to limit the crank arm shaft from rotating in the reverse direction.

[0031] The beneficial effects of the present invention are:

[0032] In the combined electrical mechanism of the present invention, when the closing energy storage spring and the opening energy storage spring drive the output cam to perform closing and opening operations, the two parts of the mechanism will not affect each other, especially during the opening operation, the opening energy storage spring is used to replace the previous disc spring, so that the mechanism can stably perform the opening operation.

[0033] The combined electrical device mechanism of the present invention is more stable and reliable for closing and opening operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention is further described below in conjunction with the accompanying drawings.

[0035] Figure 1 and Figure 2 It is a schematic diagram of the combined electrical mechanism (in the closed position);

[0036] Figure 3 , Figure 4 , Figure 5 It is a schematic diagram of the combined electrical mechanism (in the open position);

[0037] Figure 6 It is a schematic diagram of the closing transmission mechanism;

[0038] Figure 7 It is a schematic diagram of the isolation dial;

[0039] 21. Input shaft;

[0040] 22, intermediate shaft, 22A, first intermediate cam, 22B, second intermediate cam;

[0041] 23. Crank arm shaft;

[0042] 24. Half shaft;

[0043] 3. Isolation dial wheel, 31. First isolation stop pin, 32. Second isolation stop pin, 33. Third isolation stop pin, 34. First isolation bayonet, 35. Second isolation bayonet;

[0044] 4. driving wheel, 41. driving stop pin, 42. driving bayonet;

[0045] 5. Closing transmission mechanism, 51. Crank arm cam, 52. Transmission shaft, 53. Closing roller crank arm, 54. Closing transmission crank arm, 55. Connecting rod;

[0046] 61. Closing energy storage spring, 62. Opening energy storage spring;

[0047] 71. Ratchet pawl, 72. Opening limit column, 73. Output cam. DETAILED DESCRIPTION

[0048] The present invention will now be further described in conjunction with the accompanying drawings. 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.

[0049] like Figures 1 to 7 As shown, a combined electrical mechanism includes an input shaft 21, an intermediate shaft 22, a crank arm shaft 23, a half shaft 24 and an output cam 73;

[0050] Specifically, gears are arranged on the input shaft 21, the intermediate shaft 22 and the crank arm shaft 23. The gears on the intermediate shaft 22 mesh with the gears on both sides. When the input shaft 21 rotates, the input shaft 21, the intermediate shaft 22 and the crank arm shaft 23 can be driven to rotate synchronously.

[0051] The crank arm shaft 23 is connected to the closing energy storage spring 61;

[0052] The input shaft 21 is sleeved with the isolation paddle wheel 3 and the driving wheel 4 (the rotation of the input shaft 21 will not drive the isolation paddle wheel 3 and the driving wheel 4 to rotate, and the input shaft 21 only supports the isolation paddle wheel 3 and the driving wheel 4), the isolation paddle wheel 3 is connected to the opening energy storage spring 62, and the driving wheel 4 is connected to the output cam 73, and the driving wheel 4 is suitable for driving the output cam 73 to perform opening or closing movement;

[0053] A closing transmission mechanism 5 is provided between the crank arm shaft 23 and the driving wheel 4. The crank arm shaft 23 drives the driving wheel 4 to rotate through the closing transmission mechanism 5, so as to drive the output cam 73 to perform a closing operation.

[0054] A switch-off energy storage mechanism is arranged between the intermediate shaft 22 and the isolation dial wheel 3. The intermediate shaft 22 drives the isolation dial wheel 3 to rotate through the switch-off energy storage mechanism, so as to drive the switch-off energy storage spring 62 to store energy.

[0055] A lock is provided on the semi-shaft 24. When the isolation dial wheel 3 rotates to make the opening energy storage spring 62 complete energy storage, the lock of the semi-shaft 24 locks the isolation dial wheel 3.

[0056] The opening energy storage spring 62 releases energy to drive the isolation dial 3 to rotate in the opposite direction, and the isolation dial 3 drives the output cam 73 to perform the opening operation through the driving wheel 4.

[0057] Specifically, as an optional implementation in this embodiment, the closing transmission mechanism 5 includes a crank arm cam 51, a transmission shaft 52, a closing roller crank arm 53, a closing transmission crank arm 54 and a connecting rod 55;

[0058] The crank arm cam 51 is arranged on the crank arm shaft 23, the closing roller crank arm 53 and the closing transmission crank arm 54 are arranged on the transmission shaft 52, the two ends of the connecting rod 55 are respectively connected to the closing transmission crank arm 54 and the driving wheel 4, and the crank arm cam 51 cooperates with the closing roller crank arm 53.

[0059] Specifically, as an optional implementation in this embodiment, the opening energy storage mechanism includes a first intermediate cam 22A and a first isolation stop pin 31, the first intermediate cam 22A is arranged on the intermediate shaft 22, and the first isolation stop pin 31 is arranged on the isolation dial wheel 3;

[0060] The intermediate shaft 22 rotates synchronously with the crank arm shaft 23, and drives the isolation dial wheel 3 to rotate for opening and storing energy through the first intermediate cam 22A and the first isolation stop pin 31. In this embodiment, in order to reduce the friction between the first intermediate cam 22A and the first isolation stop pin 31, a rolling bearing is provided on the first isolation stop pin 31, and the first intermediate cam 22A cooperates with the rolling bearing to apply a force to the first isolation stop pin 31.

[0061] Specifically, as an optional implementation in this embodiment, it also includes a trip limit column 72, which is fixedly arranged on the mounting plate of the combined electrical mechanism; when the isolation dial 3 rotates to abut against the trip limit column 72 for tripping, the isolation dial 3 drives the output cam 73 through the driving wheel 4 to complete the tripping operation.

[0062] Specifically, as an optional implementation in this embodiment, a driving stop pin 41 is provided on the driving wheel 4, a sliding groove is provided on the output cam 73, and the driving stop pin 41 is located in the sliding groove. The driving wheel 4 rotates clockwise or counterclockwise, that is, drives the output cam 73 to reciprocate between the opening position and the closing position.

[0063] Specifically, as an optional implementation in this embodiment, a second isolation stop pin 32 is provided on the isolation dial 3, and the second isolation stop pin 32 cooperates with the driving bayonet 42 on the driving wheel 4. When the isolation dial 3 rotates to open the gate, the second isolation stop pin 32 drives the driving wheel 4 to rotate to open the gate.

[0064] Specifically, as an optional implementation in this embodiment, a reclosing prevention mechanism is provided between the intermediate shaft 22 and the isolation dial wheel 3;

[0065] The anti-reclosing mechanism comprises a second intermediate cam 22B and a third isolation stop pin 33, wherein the second intermediate cam 22B is arranged on the intermediate shaft 22, and the third isolation stop pin 33 is arranged on the isolation dial wheel 3;

[0066] After the isolation dial 3 rotates to drive the opening energy storage spring 62 to complete energy storage, the third isolation stop pin 33 of the isolation dial 3 abuts against the middle cam, and the middle cam restricts the isolation dial 3 from continuing to rotate.

[0067] The closing prevention mechanism mainly works when the opening energy storage spring 62 completes the energy storage state, such as Figure 1 As shown, at this time, the isolation dial wheel 3 is locked by the half shaft 24 and can no longer rotate counterclockwise. The elastic force of the opening energy storage spring 62 acts on the isolation dial wheel 3, thereby limiting the isolation dial wheel 3 from continuing to rotate clockwise.

[0068] A mechanism to prevent reclosing is added, and the third isolation stop pin 33 blocks the path of the second intermediate cam 22B rotating counterclockwise, thereby limiting the counterclockwise rotation of the intermediate shaft 22. Since the input shaft 21, the intermediate shaft 22, and the crank arm shaft 23 are meshed with each other through gears, when the intermediate shaft 22 cannot rotate, the remaining input shafts 21 and crank arm shafts 23 cannot rotate either.

[0069] Specifically, as an optional implementation in this embodiment, the cross-section of the crank arm shaft 23 is a V-shaped structure, and a ratchet 71 is provided on one side of the crank arm shaft 23; the ratchet 71 cooperates with the V-shaped opening of the crank arm shaft 23 to limit the crank arm shaft 23 from rotating in the opposite direction. When the crank arm shaft 23 drives the closing energy storage spring 61 to store energy, it rotates clockwise. At this time, the ratchet 71 will not limit the rotation of the crank arm shaft 23. When the crank arm shaft 23 drives the closing energy storage spring 61 to complete energy storage and release, and the combined electrical mechanism completes the closing operation, the ratchet 71 is provided to prevent the crank arm shaft 23 from rotating in the opposite direction and affecting the closing position of the output cam 73.

[0070] like Figure 7As shown, the isolation dial 3 is provided with a first isolation bayonet 34 and a second isolation bayonet 35. The first isolation bayonet 34 cooperates with the lock on the half shaft 24, and is used to cooperate with the half shaft 24 to limit the isolation dial 3 from rotating counterclockwise after the opening energy storage spring 62 completes energy storage; the second isolation bayonet 35 is suitable for cooperating with the opening limit column 72, and is used to limit the counterclockwise rotation position of the isolation dial 3, and then limit the counterclockwise rotation position of the driving wheel 4, so that the driving wheel 4 can accurately rotate the output cam 73 to the opening position.

[0071] The closing process of the combined electrical mechanism:

[0072] The motor drives the input shaft 21 to rotate clockwise, so the intermediate shaft 22 rotates counterclockwise and the crank arm shaft 23 rotates clockwise. The crank arm shaft 23 begins to stretch the closing energy storage spring 61 to store energy. When the crank arm shaft 23 completes the energy storage of the closing energy storage spring 61 (the energy storage spring is stretched to its longest), the crank arm shaft 23 continues to rotate clockwise, and the closing energy storage spring 61 begins to release energy. During the energy release process, the crank arm shaft 23 drives the drive wheel 4 to rotate clockwise via the crank arm cam 51, the transmission shaft 52, the closing roller crank arm 53, the closing transmission crank arm 54 and the connecting rod 55. The drive wheel 4 drives the output cam 73 to rotate to the closing position via the driving pin 41. The output cam 73 is connected to the external load switch, thereby realizing the closing operation of the load switch through the combined electrical mechanism.

[0073] When the crank arm shaft 23 drives the closing energy storage spring 61 to store energy, the intermediate shaft 22 is also synchronously rotating counterclockwise. The first intermediate cam 22A on the intermediate shaft 22 pushes the first isolation stop pin 31, thereby driving the isolation dial 3 to rotate clockwise. The clockwise rotation of the isolation dial 3 will squeeze the opening energy storage spring 62 to store energy. The first isolation bayonet 34 of the isolation dial 3 squeezes the half shaft 24, and the half shaft 24 rotates to avoid. After the first isolation bayonet 34 rotates past the half shaft 24, the half shaft 24 is reset under the action of the torsion spring, thereby limiting the counterclockwise rotation of the isolation dial 3, so that the opening energy storage spring 62 keeps storing energy. After the half shaft 24 locks the isolation dial 3, the closing energy storage spring 61 starts to release energy, and the energy release of the closing energy storage spring 61 enables the output cam 73 to rotate to the closing position.

[0074] The working process of the combined electrical mechanism to open the switch:

[0075] The relay drives the half-shaft 24 to rotate, so that the half-shaft 24 opens, and the half-shaft 24 no longer blocks the first isolation bayonet 34 of the isolation dial 3. At this time, the opening energy storage spring 62 begins to release energy, driving the isolation dial 3 to rotate counterclockwise, and the second isolation stop pin 32 of the isolation dial 3 cooperates with the driving bayonet 42 on the driving wheel 4 to drive the driving wheel 4 to rotate counterclockwise. The driving stop pin 41 of the driving wheel 4 drives the output cam 73 to make a counterclockwise opening movement, and the isolation dial 3 stops rotating after contacting the opening limit column 72, and the driving stop pin 41 of the driving wheel 4 rotates to the end of the inner wall of the arc groove of the output cam 73, thereby driving the output cam 73 to rotate to the opening position, completing the opening operation.

[0076] Compared with the conventional mechanisms, the combined electrical mechanism of the present invention adopts the opening energy storage spring 62 to replace the conventional coil spring, so that the mechanism can stably perform the opening operation.

[0077] 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. A combined electrical mechanism, characterized in that: include Input shaft, intermediate shaft, crankshaft, half shaft and output cam; The input shaft, the intermediate shaft and the crank arm shaft rotate synchronously; The crank arm shaft is connected to the closing energy storage spring; The input shaft is sleeved with an isolation paddle wheel and a driving wheel, the isolation paddle wheel is connected to the opening energy storage spring, the driving wheel is connected to the output cam, and the driving wheel is suitable for driving the output cam to perform opening or closing movement; A closing transmission mechanism is arranged between the crank arm shaft and the driving wheel, and the crank arm shaft drives the driving wheel to rotate through the closing transmission mechanism to drive the output cam to perform a closing operation; A switch-off energy storage mechanism is arranged between the intermediate shaft and the isolation dial, and the intermediate shaft drives the isolation dial to rotate through the switch-off energy storage mechanism to drive the switch-off energy storage spring to store energy; A lock is provided on the half shaft, and when the isolation thumbwheel rotates to make the opening energy storage spring complete energy storage, the lock of the half shaft locks the isolation thumbwheel; The opening brake energy storage spring releases energy to drive the isolation thumbwheel to rotate in the opposite direction, and the isolation thumbwheel drives the output cam to perform the opening brake operation through the driving wheel; The closing transmission mechanism comprises a crank arm cam, a transmission shaft, a closing roller crank arm, a closing transmission crank arm and a connecting rod; The crank arm cam is arranged on the crank arm shaft, the closing roller crank arm and the closing transmission crank arm are arranged on the transmission shaft, the two ends of the connecting rod are respectively connected to the closing transmission crank arm and the driving wheel, and the crank arm cam cooperates with the closing roller crank arm; The opening brake energy storage mechanism comprises a first intermediate cam and a first isolation stop pin, wherein the first intermediate cam is arranged on the intermediate shaft, and the first isolation stop pin is arranged on the isolation dial wheel; The intermediate shaft rotates synchronously with the crank arm shaft, and drives the isolation dial wheel to rotate to open the gate and store energy through the first intermediate cam and the first isolation stop pin.

2. The combined electrical device according to claim 1, characterized in that: It also includes the gate limit column for fixed setting; When the isolation thumbwheel rotates to abut against the opening limit column for opening the gate, the isolation thumbwheel drives the output cam through the driving wheel to complete the opening operation.

3. The combined electrical device according to claim 1, characterized in that: A second isolation stop pin is arranged on the isolation dial wheel, and the second isolation stop pin cooperates with the bayonet on the driving wheel. When the isolation dial wheel rotates to open the gate, the second isolation stop pin drives the driving wheel to rotate to open the gate.

4. The combined electrical device according to claim 1, characterized in that: A driving stop pin is arranged on the driving wheel, a sliding groove is arranged on the output cam, and the driving stop pin is located in the sliding groove.

5. The combined electrical device according to claim 1, characterized in that: An anti-reclosing mechanism is provided between the intermediate shaft and the isolation dial; The anti-reclosing mechanism comprises a second intermediate cam and a third isolation stop pin, wherein the second intermediate cam is arranged on the intermediate shaft, and the third isolation stop pin is arranged on the isolation dial wheel; After the isolation dial rotates to drive the opening energy storage spring to complete energy storage, the third isolation stop pin of the isolation dial abuts against the middle cam, and the middle cam restricts the isolation dial from continuing to rotate.

6. The combined electrical device according to claim 1, characterized in that: The cross section of the crank arm shaft is a V-shaped structure, and a ratchet is provided on one side of the crank arm shaft; The ratchet pawl cooperates with the V-shaped opening of the crank arm shaft to limit the crank arm shaft from rotating in the reverse direction.

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