Dual-power change-over switch and driving mechanism thereof

Abstract

The utility model provides a dual power supply change-over switch and a driving mechanism thereof, the driving mechanism of the dual power supply change-over switch comprises a housing, a first driver, a second driver, a driving shaft and a locking module, the first driver and the second driver are respectively assembled on the left side and the right side of the housing and are connected with the driving shaft; the first driver drives the driving shaft to move leftwards so as to be switched to a first position, and the second driver drives the driving shaft to move rightwards so as to be switched to a second position; when the driving shaft is in a free state, the driving shaft is located at a double-separation position between a first position and a second position and is limited by the locking module. A double-division position between the first position and the second position is added, so that any power supply is not switched on; when maintenance and other operations are carried out at the position, potential safety hazards caused by switching on a power supply can be well avoided.

Description

Technical Field

[0001] The utility model relates to the field of dual power supplies, in particular to a dual power supply switching switch and a driving mechanism thereof. Background Art

[0002] In order to ensure the normal use of electricity in life and avoid power outages caused by power system failures, large-scale continuous production enterprises such as petroleum, chemical, metallurgy, electricity, and communications all use dual power supply split operation or one main and one backup power supply mode to ensure that when one power supply fails and the power is cut off, the other power supply can be put into use immediately.

[0003] The switching of dual power supplies is particularly important. The existing dual power supply switching switches, whether manual or electric, switch between the two power supplies. Although one power supply can be switched to another when repairing it, it is still a safety hazard for the maintenance personnel because it is always powered on. Utility Model Content

[0004] Therefore, in order to solve the above problems, the utility model provides a dual power switch and a driving mechanism thereof; the dual power switch is provided with a double-off position in which both power supplies are not powered to ensure safety.

[0005] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0006] A driving mechanism of a dual power switching switch comprises a shell, a first driver, a second driver, a driving shaft and a locking module, wherein the first driver and the second driver are respectively assembled on the left and right sides of the shell and connected to the driving shaft, the first driver comprises a shell, a first driver, a second driver, a driving shaft and a locking module, wherein the first driver and the second driver are respectively assembled on the left and right sides of the shell and connected to the driving shaft, the first driver drives the driving shaft to move leftward to switch to a first position, and the second driver drives the driving shaft to move rightward to switch to a second position; when the driving shaft is in a free state, the driving shaft is in a double position between the first position and the second position, and is restricted by the locking module.

[0007] Furthermore, when the driving shaft is in the first position and the second position, it is also restricted by the locking module respectively.

[0008] Furthermore, the first driver and the second driver are both electromagnetic drivers.

[0009] Furthermore, the electromagnetic driver includes a first coil group, a first armature, a first spring and a first static iron core. The first armature, the first spring and the first static iron core are assembled in the axial hole of the first coil group. The first static iron core is fixedly arranged. The first spring is assembled between the first armature and the first static iron core. The first armature is connected to the drive shaft. When the first coil group is energized, the first armature is driven to engage with the first static iron core, thereby pulling the drive shaft to move, and the first spring is compressed to store energy. When the first coil group loses power, the first spring resets and drives the first armature away from the static iron core, thereby releasing the driving force.

[0010] Furthermore, the first armature of the first driver and the first armature of the second driver are both connected to a fixed block, and a vertically extending long slot hole is provided on the fixed block, and the driving shaft is inserted into the long slot hole.

[0011] Furthermore, it also includes a rotating shaft with a swing arm, which is rotatably mounted on the shell so that the swing arm can swing in the left and right directions, and the drive shaft is mounted on the swing arm.

[0012] Furthermore, the locking module includes a locking plate and a second spring, the second spring applies an upward elastic supporting force to the locking plate, a boss is provided on the locking plate, a limiting groove is provided on the boss, and when the drive shaft is in the double-split position, it is restricted in the limiting groove of the boss.

[0013] Furthermore, the groove walls on the left and right sides of the limiting groove are arc-shaped groove walls.

[0014] Furthermore, the locking module also includes a base, and the locking plate is guided and assembled in the base so as to be liftable.

[0015] Furthermore, when the driving shaft is in the first position and the second position, it abuts against the left and right sides of the boss respectively and is restricted by the boss.

[0016] Furthermore, the locking module also includes a third driver, and the third driver is drivingly connected to the locking plate to drive the locking plate to move downward to make way.

[0017] A dual power switching switch comprises a driving mechanism, a transmission mechanism and a contact mechanism, wherein the driving mechanism is the driving mechanism of the dual power switching switch described above, the driving shaft is connected to two moving contacts of the contact mechanism through a transmission mechanism, when the driving shaft is in a first position or a second position, one of the two moving contacts of the contact mechanism is closed with a static contact; when the driving shaft is in a double-split position, the two moving contacts of the contact mechanism are separated from the static contact.

[0018] The technical solution provided by the utility model has the following beneficial effects:

[0019] The driving shaft switches the power supply through the drive of the first driver and the second driver respectively. At the same time, a double-split position located between the first position and the second position is added. In the double-split position, the two moving contacts of the contact mechanism can be separated from the static contact, that is, no power supply will be connected; in this way, when performing maintenance and other operations in this position, the safety hazards caused by connecting the power supply can be well avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure is a three-dimensional schematic diagram of the driving mechanism of the dual power switch in the embodiment;

[0021] Figure 2 The figure is a top view of the driving mechanism of the dual power switch in the embodiment;

[0022] Figure 3 Shown Figure 2 Sectional view along line AA;

[0023] Figure 4 Shown Figure 2 Sectional view along the midline BB;

[0024] Figure 5 The figure shows a cross-sectional view of the dual power switch in the embodiment when the dual power switch is in the second position;

[0025] Figure 6 The figure shows a cross-sectional view of the dual power switch in the embodiment when it is in the split position. DETAILED DESCRIPTION

[0026] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0027] In the description of the present invention, terms such as "upper", "lower", "left", "right", "front", "backward", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0029] Reference Figures 1 to 6As shown, the driving mechanism of a dual power switch provided in this embodiment includes a housing 10, a first driver 21, a second driver 22, a rotating shaft 32 with a swing arm 33, a driving shaft 31 and a locking module 40. The rotating shaft 32 is rotatably mounted on the housing 10 so that the swing arm 33 can swing in the left and right directions. The driving shaft 31 is mounted on the swing arm 33. The structure of the rotating shaft 32 with the swing arm 33 can effectively support and limit the trajectory of the driving shaft 31, making the switching action more stable. Of course, in other embodiments, the structure of the rotating shaft 32 with the swing arm 33 may not be used.

[0030] The first driver 21 and the second driver 22 are respectively mounted on the left and right sides of the housing 10 and connected to the drive shaft 31. The first driver 21 drives the drive shaft 31 to move leftward to switch to the first position (eg, Figure 4 The second driver 22 moves the drive shaft 31 to the right to switch to the second position (as shown in FIG. Figure 5 When the drive shaft 31 is in a free state (ie, not restricted by the first driver 21, the second driver 22 and other structures), the drive shaft 31 is in a double position between the first position and the second position (eg Figure 6 As shown), and is limited by the locking module 40, so that the drive shaft 31 is maintained in the double-split position.

[0031] This embodiment also provides a dual power switching switch, including a driving mechanism, a transmission mechanism and a contact mechanism. The driving mechanism is the driving mechanism of the dual power switching switch described above, and the driving shaft is connected to the two moving contacts of the contact mechanism through the transmission mechanism. Specifically, the transmission mechanism can adopt the transmission mechanism of the automatic switching switch disclosed in CN207338167U, etc., which will not be described in detail here.

[0032] When the drive shaft 31 is in the first position or the second position, one of the two moving contacts of the contact mechanism is closed with the static contact; that is, when the first driver 21 drives the drive shaft 31 to swing to the left to switch to the first position, the drive shaft 31 drives the moving contact and the static contact of the first power supply to close through the transmission mechanism; when the second driver 22 drives the drive shaft 31 to swing to the right to switch to the second position, the drive shaft 31 drives the moving contact and the static contact of the first power supply to separate through the transmission mechanism, and drives the moving contact and the static contact of the second power supply to close, thereby realizing the switching of the two power supplies.

[0033] When the drive shaft 31 is in the double-open position, the two moving contacts of the contact mechanism are separated from the static contact. That is, when the drive shaft 31 is switched to the double-open position, the two moving contacts of the contact mechanism are separated from the static contact, and both power sources are in the open state, and neither power source is connected.

[0034] In this way, when maintenance is needed, maintenance personnel can switch it to the double-off position, which is completely power-off; this can effectively avoid safety hazards caused by connecting the power supply. In addition, in the double-off position, it can also meet the needs of other scenarios.

[0035] In this embodiment, the first driver 21 and the second driver 22 are both electromagnetic drivers; further, the electromagnetic driver includes a first coil group 201, a first armature 204, a first spring 203 and a first static iron core 202, the first armature 204, the first spring 203 and the first static iron core 202 are assembled in the axial hole of the first coil group 201, the first static iron core 202 is fixedly arranged, the first spring 203 is assembled between the first armature 204 and the first static iron core 202, the first armature 204 is connected to the drive shaft 31, and when the first coil group 201 is energized, the first armature 204 is driven to be attracted to the first static iron core 202, thereby pulling the drive shaft 31 to move, and at this time the first spring 203 is compressed to store energy; when the first coil group 201 loses power, the first armature 204 and the first static iron core 202 lose their attraction force, and the first spring 203 applies a force on the first armature 204 in the direction away from the first static iron core 202, thereby driving the first armature away from the static iron core. For example, when the first driver 21 is powered and the second driver 22 is powered off, the drive shaft 31 is pulled to move to the left to the first position, and when the second driver 22 is powered and the first driver 21 is powered off, the drive shaft 31 is pulled to move to the right to the second position; in this way, the position switching of the drive shaft can be achieved by controlling the power on and off of the first driver 21 and the second driver 22, and the control method is simple and effective. Of course, in other embodiments, the first driver 21 and the second driver 22 can also be driven by other drive components, such as electric push rods or cylinders.

[0036] When the drive shaft 31 is in a free state, which means that it is not driven or restricted by external force, such as when the first driver 21 and the second driver 22 release the driving force, and the locking module 40 described below releases the restriction on the drive shaft 31 in the first position or the second position, the drive shaft 31 switches to the double-open position under the joint action of the left and right first springs 203. At this time, the locking module 40 restricts the drive shaft 31 in the double-open position again, so that it remains in the double-open position.

[0037] Furthermore, the first armature 204 of the first driver 21 and the first armature 204 of the second driver 22 are both connected to a fixing block 23, and a vertically extending long slot hole 231 is provided on the fixing block 23, and the driving shaft 31 is passed through the long slot hole 231. In this way, the movement of the driving shaft 31 can be well controlled.

[0038] The locking module 40 includes a locking plate 41 and a second spring 42. The second spring 42 applies an upward elastic support force to the locking plate 41. The locking plate 41 is provided with a boss 45. The boss 45 is provided with a limiting groove 46. When the drive shaft 31 is in the double-split position, it is limited in the limiting groove 46 of the boss 45. Figure 6 As shown; in this way, it can be ensured that the drive shaft 31 can be well restricted in the double-point position.

[0039] Furthermore, the left and right groove walls of the limit groove 46 are arc-shaped groove walls; when the first driver 21 or the second driver 22 is energized to pull the drive shaft 31, the drive shaft 31 cooperates with the arc-shaped groove wall during the movement to the left or right, thereby forcing the locking plate 41 to overcome the elastic force of the second spring 42 and move downward to make way, thereby ensuring the smooth switching position of the drive shaft 31.

[0040] At the same time, in order to ensure that the position of the locking plate 41 is not offset, in the present embodiment, the locking module 40 also includes a base 43, and the locking plate 41 is guided and assembled in the base 43 in a liftable manner; that is, the locking plate 41 is assembled in the base 43 in a liftable manner, and forms a guide cooperation with the base 43, so that the locking plate 41 can only be lifted and lowered vertically. In this way, it can be effectively avoided that the locking plate 41 is offset to one side and cannot effectively restrict the drive shaft 31 in the double-split position.

[0041] There are two second springs 42 , which are distributed on the left and right sides. The lower end of the second spring 42 abuts against the base 43 , and the upper end thereof abuts against the locking plate 41 , so that the acting force is more balanced.

[0042] Further preferably, in this embodiment, in order to save electricity cost, in this embodiment, the drive shaft 31 abuts against the left and right sides of the boss 45 when it is in the first position and the second position, and is restricted by the boss 45. That is, after the first driver 21 pulls the drive shaft 31 to the left to the first position, the right side of the drive shaft 31 will be restricted by the boss 45. Figure 4 As shown, at this time, the first driver 21 can be powered off, and the drive shaft 31 is restricted by the boss 45 so that it remains in the first position; similarly, as Figure 5 As shown, the same is true for the drive shaft 31 in the second position.

[0043] The locking module 40 also includes a third driver 44, which is connected to the locking plate 41 to drive the locking plate 41 to move downward to make way. When it is necessary to release the restriction of the boss 45 on the drive shaft 31 in the first position or the second position, the locking plate 41 can be driven downward to make way by the third driver 44. Specifically, in this embodiment, the third driver 44 also adopts an electromagnetic driver, which includes a second coil group 441, a second static iron core 442 and a second armature 443. The second armature 443 and the second static iron core 442 are assembled in the shaft hole of the second coil group 441, the second static iron core 442 is fixedly arranged, and the second armature 443 is connected to the locking plate 41; when the second coil group 441 is energized, the second armature 443 and the second static iron core 442 are attracted, and the second armature 443 drives the locking plate 41 to move downward synchronously.

[0044] Of course, in other embodiments, the third driver 44 may also use a lifting cylinder or other structures to drive the locking plate 41 to move downward to make way.

[0045] Specifically, in this embodiment, a shaft sleeve 311 is sleeved on the driving shaft 31 , and the shaft sleeve 311 is in contact with the boss 45 , thereby providing good protection.

[0046] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A driving mechanism for a dual power switch, characterized in that: The invention comprises a housing, a first driver, a second driver, a driving shaft and a locking module, wherein the first driver and the second driver are respectively mounted on the left and right sides of the housing and connected to the driving shaft, the first driver drives the driving shaft to move leftward to switch to a first position, and the second driver drives the driving shaft to move rightward to switch to a second position; When the drive shaft is in a free state, the drive shaft is in a double-split position between the first position and the second position, and is restricted by the locking module.

2. The driving mechanism of the dual power switch according to claim 1, characterized in that: When the driving shaft is in the first position and the second position, it is also restricted by the locking module respectively.

3. The driving mechanism of the dual power switch according to claim 1, characterized in that: The first driver and the second driver are both electromagnetic drivers; the electromagnetic driver includes a first coil group, a first armature, a first spring and a first static iron core, the first armature, the first spring and the first static iron core are assembled in the axial hole of the first coil group, the first static iron core is fixedly arranged, the first spring is assembled between the first armature and the first static iron core, the first armature is connected to the driving shaft, when the first coil group is energized, the first armature is driven to engage with the first static iron core, thereby pulling the driving shaft to move, and the first spring is compressed to store energy; when the first coil group loses power, the first spring resets and drives the first armature away from the static iron core, thereby releasing the driving force.

4. The driving mechanism of the dual power switch according to claim 3, characterized in that: The first armature of the first driver and the first armature of the second driver are both connected to a fixing block, and a vertically extending long slot hole is provided on the fixing block, and the driving shaft is penetrated in the long slot hole.

5. The driving mechanism of the dual power switch according to claim 1, characterized in that: The locking module includes a locking plate and a second spring, wherein the second spring applies an upward elastic supporting force to the locking plate. A boss is provided on the locking plate, and a limiting groove is provided on the boss. When the drive shaft is in the double-split position, it is restricted in the limiting groove of the boss.

6. The driving mechanism of the dual power switch according to claim 5, characterized in that: The groove walls on the left and right sides of the limiting groove are arc-shaped groove walls.

7. The driving mechanism of the dual power switch according to claim 5, characterized in that: The locking module also includes a base, and the locking plate is guided and assembled in the base so as to be liftable.

8. The driving mechanism of the dual power switch according to claim 5, characterized in that: When the driving shaft is in the first position and the second position, it abuts against the left and right sides of the boss respectively and is restricted by the boss.

9. The driving mechanism of the dual power switch according to claim 8, characterized in that: The locking module also includes a third driver, which is drivingly connected to the locking plate to drive the locking plate to move downward to make way.

10. A dual power switch, comprising a drive mechanism, a transmission mechanism and a contact mechanism, characterized in that: The driving mechanism is the driving mechanism of the dual power switching switch described in any one of claims 1 to 9 above, and the driving shaft is connected to the two moving contacts of the contact mechanism through a transmission mechanism. When the driving shaft is in the first position or the second position, one of the two moving contacts of the contact mechanism is closed with the static contact; when the driving shaft is in the double-split position, the two moving contacts of the contact mechanism are separated from the static contact.

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