Electric switching mechanism of disconnecting switch

Abstract

The utility model provides an electric switching mechanism of an isolating switch. The electric switching mechanism comprises a driving shaft, a transmission wheel set and two groups of electromagnetic driving modules, the driving shaft is sleeved with the transmission wheel set, and limiting is formed in the circumferential direction. Each electromagnetic driving module comprises an electromagnetic driver, a connecting beam and an elastic reset piece, the connecting beams are movably connected to the transmission wheel sets, and the driving ends of the electromagnetic drivers are connected with the connecting beams; the electromagnetic drivers of the two electromagnetic driving modules pull the transmission wheel sets through the connected connecting beams so as to drive the transmission wheel sets and the driving shafts to rotate in different directions; the elastic reset piece is connected with the connecting beam so as to drive the connecting beam to be separated from the abutting connection with the transmission wheel set after the electromagnetic driver is powered off; opening and closing switching of the isolating switch can be realized in an electric driving mode. And the device has the characteristics of simple structure, low cost, stable action and high reliability.

Description

Technical Field

[0001] The utility model relates to the field of electrical switches, in particular to an electric switching mechanism of an isolating switch. Background Art

[0002] The isolating switch has a certain connection and disconnection capacity. It is a device that isolates the power-off part from the live part and creates an obvious disconnection point to isolate the faulty equipment or perform power outage maintenance. There are various types of isolating switches. The existing technology uses isolating switches with energy storage. The energy storage mechanism stores energy, releases it instantly, and instantly connects and disconnects the contact mechanism, so that the connection time when closing and the disconnection time when opening are independent of the operating speed of the operating handle, thereby improving various electrical and mechanical properties.

[0003] The switching mechanism of this type of disconnector is generally manually operated by an operating handle, such as a load disconnector disclosed in CN206098209U and a dual energy storage operating mechanism of a disconnector disclosed in CN209729805U. Although there are also electric methods to achieve operation, such as a large-frame disconnector disclosed in CN219534381U, the electric operation has a complex structure, many parts, and high cost. Utility Model Content

[0004] Therefore, in order to improve the above-mentioned problem, the utility model provides an electric switching mechanism of an isolating switch.

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

[0006] An electric switching mechanism for an isolating switch comprises a driving shaft, a transmission wheel set and two sets of electromagnetic driving modules; the transmission wheel set is sleeved on the driving shaft and forms a limit in the circumferential direction; the two sets of electromagnetic driving modules each comprise an electromagnetic driver, a connecting beam and an elastic reset member, the connecting beam is movably connected to the transmission wheel set, and the driving end of the electromagnetic driver is connected to the connecting beam; the electromagnetic drivers of the two sets of electromagnetic driving modules pull the transmission wheel set through the connected connecting beams to drive the transmission wheel set and the driving shaft to rotate in different directions; the elastic reset member is connected to the connecting beam to drive the connecting beam to disengage the contact with the transmission wheel set after the electromagnetic driver is powered off.

[0007] Furthermore, the transmission wheel group includes two transmission wheels which are sleeved on the driving shaft and arranged opposite to each other, and the two ends of the connecting beam are respectively passed through the two transmission wheels; the driving end of the electromagnetic driver is connected to the connecting beam in the middle position between the two transmission wheels.

[0008] Furthermore, the two transmission wheels of the transmission wheel group are provided with corresponding arc-shaped slots, and the two ends of the connecting beam are respectively inserted into the arc-shaped slots of the two transmission wheels. The connecting beams of the two sets of electromagnetic drive modules act on the two ends of the arc-shaped slots respectively. When the electromagnetic driver pulls the transmission wheel group through the connected connecting beams, the connecting beams abut against the ends of the arc-shaped slots; after the electromagnetic driver is powered off, the elastic reset drives the connecting beam to break away from the abutment with the ends of the arc-shaped slots.

[0009] Furthermore, the arc-shaped slot of the transmission wheel includes an arc segment and straight segments connected at both ends of the arc segment; the center of the arc segment coincides with the central axis of the drive shaft; the straight segment extends along the tangent direction of the arc segment, and when the electromagnetic driver pulls the transmission wheel group through the connected connecting beam, the connecting beam abuts against the straight segment, and after the electromagnetic driver is powered off, the elastic reset drives the connecting beam to reset to the position of the arc segment.

[0010] Furthermore, the driving shaft is a square shaft, the center holes of the two driving wheels of the driving wheel set are square holes, and the driving wheels are sleeved on the driving shaft through the square holes to achieve limiting in the circumferential rotation direction.

[0011] Furthermore, the electromagnetic driver includes a coil frame, a coil wound on the coil frame, and a moving iron core arranged in the coil, and the moving iron core is connected to the connecting beam.

[0012] Furthermore, the electromagnetic drive module also includes a connecting rod, and two ends of the connecting rod are respectively hinged on the moving iron core and the connecting beam.

[0013] Furthermore, the electromagnetic drive module has two connecting rods which are arranged opposite to each other.

[0014] Furthermore, it also includes a shell, the drive shaft is rotatably assembled in the shell with at least one end exposed outside the shell; the transmission wheel group and two sets of electromagnetic drive modules are all arranged in the shell; and the electromagnetic drive is fixed to the shell.

[0015] Furthermore, the elastic reset member is a tension spring, one end of which is fixedly arranged, and the other end is connected to the connecting beam; the tension spring applies a pulling force on the connecting beam in a direction away from the electromagnetic driver.

[0016] Furthermore, the drive shaft and the transmission wheel set are arranged in the middle position of the shell, the electromagnetic drivers of the two sets of electromagnetic drive modules are arranged on one side of the shell, and the elastic reset members of the two sets of electromagnetic drive modules are arranged on the other side of the shell.

[0017] The technical solution provided by the utility model has the following beneficial effects:

[0018] Two sets of electromagnetic drive modules are used to drive the transmission wheel set and the drive shaft to rotate in different directions to realize the driving in the opening and closing directions respectively. The structure is simple and the cost is low. At the same time, when one set of electromagnetic drivers completes the driving and the power is cut off, the connecting beam will be reset through the elastic reset part to avoid affecting the driving of the other set of electromagnetic drive modules. The operation is stable and the reliability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure shows a partial structural exploded schematic diagram of the electric switching mechanism of the disconnector in the embodiment;

[0020] Figure 2 The figure shows a schematic diagram of the structure of the hidden housing of the electric switching mechanism of the isolating switch in the embodiment;

[0021] Figure 3 The figure shows a front view of the electric switching mechanism of the disconnector in the embodiment, which hides the front housing;

[0022] Figure 4 Shown in Figure 2 A front view of the structure shown with one of the transmission wheels hidden;

[0023] Figure 5 Shown Figure 2 An exploded schematic diagram of the structure shown;

[0024] Figure 6 The figure shows a schematic diagram of the structure of a single transmission wheel in the embodiment;

[0025] Figure 7 Shown is a schematic structural diagram of the isolating switch in the embodiment. 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 6 As shown, the electric switching mechanism of an isolating switch provided in this embodiment includes a driving shaft 11, a transmission wheel group 12 and two groups of electromagnetic driving modules 13; the transmission wheel group 12 is sleeved on the driving shaft 11 and forms a limit in the circumferential direction; specifically, in this embodiment, the transmission wheel group 12 includes two transmission wheels 121 sleeved on the driving shaft 11 and arranged opposite to each other, the driving shaft 11 is a square shaft, and the center holes 123 of the two transmission wheels 121 of the transmission wheel group 12 are square holes, and the transmission wheels 121 are sleeved on the driving shaft 11 through the center holes 123 to achieve limit in the circumferential rotation direction; in this way, the driving shaft 11 and the two transmission wheels 121 can achieve synchronous rotation in the circumferential direction. Of course, in other embodiments, the number of transmission wheels 121 in the transmission wheel set 12 can also be one or more than two; the center hole 123 of the transmission wheel set 12 and the drive shaft 11 can also be other non-circular structures such as triangle, "D" shape, etc., as long as it can ensure that the transmission wheel set 12 is sleeved on the drive shaft 11 and forms a limit in the circumferential direction.

[0030] The two sets of electromagnetic drive modules 13 each include an electromagnetic driver 131, a connecting beam 132 and an elastic reset member 133. The connecting beam 132 is movably connected to the transmission wheel group 12. In this specific embodiment, the two transmission wheels 121 of the transmission wheel group 12 are provided with corresponding arc-shaped slots 122, and the two ends of the connecting beam 132 are respectively penetrated in the arc-shaped slots 122 of the two transmission wheels 121; Figure 3The two groups of electromagnetic drive modules 13 are distributed in the left and right directions, respectively defined as the first electromagnetic drive module (referring to the electromagnetic drive module 13 on the left) and the second electromagnetic drive module (referring to the electromagnetic drive module 13 on the right); the connecting beam 132 of the first electromagnetic drive module (defined as the first connecting beam) is arranged in the left section of the arc slot 122, and the connecting beam 132 of the second electromagnetic drive module (defined as the second connecting beam) is arranged in the right section of the arc slot 122. The driving end of the electromagnetic driver 131 is connected to the connecting beam 132; the electromagnetic drivers 131 of the two groups of electromagnetic drive modules 13 pull the transmission wheel group 12 through the connected connecting beam 132 to drive the transmission wheel group 12 and the drive shaft 11 to rotate in different directions; that is, when the first electromagnetic drive module is driven, the transmission wheel group 12 and the drive shaft 11 are pulled counterclockwise through the connected first connecting beam; at this time, the first connecting beam is against the left end of the arc slot 122 and pulled downward. When the second electromagnetic drive module is driven, the transmission wheel set 12 and the drive shaft 11 are pulled clockwise through the connected second connecting beam. At this time, the second connecting beam abuts against the right end of the arc-shaped slot 122 and pulls downward; in this way, the driving in the opening and closing directions is realized respectively. Figure 3 and Figure 4 The figure shows a state where the right connecting beam 132 (ie, the second connecting beam) abuts against the right end of the arc-shaped slot 122 and is pulled downward.

[0031] The transmission wheel assembly 12 adopts a structure of two transmission wheels 121. The two ends of the connecting beam 132 are respectively penetrated in the arc-shaped slots 122 of the two transmission wheels 121, and can be stressed separately. Each transmission wheel 121 bears half of the force, thereby improving mechanical durability.

[0032] At the same time, the elastic reset member 133 is connected to the connecting beam 132, so as to drive the connecting beam 132 to disengage from the abutment with the transmission wheel group 12 after the electromagnetic driver 131 is powered off; specifically, the elastic reset member 133 of the first electromagnetic drive module (i.e., the electromagnetic drive module 13 on the left) is defined as the first elastic reset member, and the first elastic reset member is connected to the first connecting beam; the elastic reset member 133 of the second electromagnetic drive module (i.e., the electromagnetic drive module 13 on the right) is defined as the second elastic reset member, and the second elastic reset member is connected to the second connecting beam. When the first electromagnetic drive module completes the driving, the electromagnetic driver 131 (defined as the first electromagnetic driver) of the group is powered off, and the first elastic reset member drives the first connecting beam to disengage from the left end of the arc-shaped slot 122 (this state is as shown in FIG. 1 ). Figure 3 and Figure 4As shown); in this way, when the second electromagnetic drive module is driven, the first connecting beam will not hinder the movement of the transmission wheel group 12. When the second electromagnetic drive module group completes the driving, the electromagnetic driver 131 (defined as the second electromagnetic driver) of the group is powered off, and the second elastic reset member drives the second connecting beam to separate from the right end of the arc-shaped slot 122; in this way, when the first electromagnetic drive module is driven, the second connecting beam will not hinder the movement of the transmission wheel group 12.

[0033] The electric switching mechanism provided in this embodiment has the characteristics of simple structural design, low cost, stable operation, high reliability, etc.

[0034] Furthermore, the arc slot 122 of the transmission wheel 121 includes a semicircular arc segment 124 and a straight segment 125 connected to both ends of the semicircular arc segment 124; the center of the semicircular arc segment 124 coincides with the central axis of the driving shaft 11; the straight segment 125 extends along the tangent direction of the semicircular arc segment 124, such as Figure 6 As shown, the semicircular arc segment 124 is an arc segment of the upper half, and the two straight segments 125 extend vertically downward. When the electromagnetic driver 131 pulls the transmission wheel set 12 through the connected connecting beam 132, the connecting beam 132 abuts against the straight segment 125. In this way, the arrangement of the semicircular arc segment 124 has enough space for the two connecting beams 132 to move without interfering with each other; further, the arrangement of the straight segment 125, in the process of pulling the transmission wheel set 12, the connecting beam 132 enters a certain distance below the horizontal position of the drive shaft 11, and the end of the arc slot 121 will still remain at the outermost side, so that the connecting beam 132 will not be separated from the end of the arc slot 121 until the driving is completed, avoiding the connection beam 132 from being separated from the end of the arc slot 121 and causing invalid driving; the action is more reliable.

[0035] Of course, in other embodiments, the matching manner of the connecting beam 132 and the transmission wheel group 12 is not limited to this. For example, two separate arc-shaped slots 122 can be set on the transmission wheel 121, and the connecting beams 132 of the two groups of electromagnetic drive modules 13 are respectively matched with an arc-shaped slot 122, etc. When two separate arc-shaped slots 122 are used, the arc-shaped slot 122 can also be composed of a quarter of a circular arc segment and one of the straight segments.

[0036] Specifically, in this embodiment, the electromagnetic driver 131 includes a coil frame 135, a coil 136 wound on the coil frame 135, and a moving iron core 137 disposed in the coil 136. The moving iron core 137 is connected to the connecting beam 132. When the coil 136 is energized, a magnetic field is generated, which drives the moving iron core 137 to move. The movement of the moving iron core 137 drives the connecting beam 132 to move synchronously, and finally pulls the transmission wheel group 12 and the driving shaft 11 to rotate; the structure is simple and easy to implement. Of course, in other embodiments, in order to enhance the magnetic conductivity effect, a yoke iron can also be added for magnetic conductivity.

[0037] Furthermore, the electromagnetic drive module 13 also includes a connecting rod 134, and the two ends of the connecting rod 134 are respectively hinged on the moving iron core 137 and the connecting beam 132; in this way, a transmission connection is achieved. Furthermore, there are two connecting rods 134, which are arranged opposite to each other; the two connecting rods 134 are simultaneously connected to the connecting beam 132, specifically, they are connected to the middle section of the connecting beam 132 between the two transmission wheels 121; when the connecting rod 134 drives the transmission wheel 121, it provides the best effective transmission force component, and the switch is switched reliably. Of course, in other embodiments, the connecting rod 134 can also be one; or the transmission connection between the connecting beam 132 and the driving end (moving iron core 137) of the electromagnetic driver 131 can also be achieved by other means, such as using a flexible connecting rope.

[0038] It also includes a housing 14, the drive shaft 11 is rotatably mounted in the housing 14, at least one end of which is exposed outside the housing 14, and is used to connect other components, such as the central axis of the energy storage mechanism; the transmission wheel group 12 and the two sets of electromagnetic drive modules 13 are all arranged in the housing 14; the electromagnetic driver 131 is fixed to the housing 14. In this embodiment, the drive shaft 11 and the transmission wheel group 12 are arranged in the middle of the housing 14, and the electromagnetic drivers 131 of the two sets of electromagnetic drive modules 13 are arranged on one side of the housing 14, such as Figure 3 As shown, the elastic reset members 133 of the two sets of electromagnetic drive modules 13 are located on the lower side of the housing 14 , and are arranged on the other side of the housing 14 , that is, on the upper side of the housing 14 ; the layout is reasonable and the various components will not interfere with each other.

[0039] Specifically, the housing 14 includes a front housing 141 and a rear housing 142 , which are covered with each other to form a receiving chamber for assembling the drive shaft 11 , the transmission wheel set 12 and the two sets of electromagnetic drive modules 13 .

[0040] Furthermore, the elastic reset member 133 is a tension spring, one end of which is fixedly arranged, specifically fixed on the housing 14, and the other end is connected to the connecting beam 132; the tension spring applies a pulling force to the connecting beam 132 in a direction away from the electromagnetic driver 131; when the electromagnetic driver 131 drives the transmission wheel group 12 to move, the tension spring is stretched to store energy, and when the electromagnetic driver 131 is powered off, the tension spring pulls the connecting beam 132 to reset (i.e., disengages from the end of the arc-shaped slot 122). The structure using a tension spring is simple in structure and easy to implement. Of course, in other embodiments, other components such as pull ropes, springs, etc. can also be used, as long as they can drive the connecting beam 132 to reset after the electromagnetic driver 131 is powered off.

[0041] For further information, please refer to Figure 7 As shown, in this embodiment, a disconnector is also provided, comprising a contact mechanism 30, an energy storage mechanism 20 and a switching mechanism 10, wherein the switching mechanism 10 is connected to the energy storage mechanism 20, and the energy storage mechanism 20 is connected to the contact mechanism 30, wherein the switching mechanism 10 is the electric switching mechanism of the disconnector described above; the electromagnetic driver 131 pulls the transmission wheel group 12 and the drive shaft 11 to rotate through the connected connecting beam 132; and then drives the energy storage mechanism 20 to store energy until it is released; in this way, the switching mechanism 10 drives the energy storage mechanism 20 to store energy until the energy storage mechanism 20 is released, and the release of the energy storage mechanism 20 drives the contact mechanism 30 to open or close; as in this embodiment, the first electromagnetic drive module drives the drive shaft 11 and the transmission wheel group 12 to rotate counterclockwise, thereby driving the energy storage mechanism 20 to close and store energy; the second electromagnetic drive module drives the drive shaft 11 and the transmission wheel group 12 to rotate clockwise, thereby driving the energy storage mechanism 20 to open and store energy.

[0042] The electric switching mechanism provided in this embodiment can realize the opening and closing switching of the isolating switch by electric drive.

[0043] 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. An electric switching mechanism for an isolating switch, characterized in that: It includes a driving shaft, a transmission wheel group and two groups of electromagnetic driving modules; the transmission wheel group is sleeved on the driving shaft and forms a limit in the circumferential direction; the two groups of electromagnetic driving modules each include an electromagnetic driver, a connecting beam and an elastic reset member, the connecting beam is movably connected to the transmission wheel group, and the driving end of the electromagnetic driver is connected to the connecting beam; the electromagnetic drivers of the two groups of electromagnetic driving modules pull the transmission wheel group through the connected connecting beams to drive the transmission wheel group and the driving shaft to rotate in different directions; the elastic reset member is connected to the connecting beam to drive the connecting beam to break away from the abutment with the transmission wheel group after the electromagnetic driver is powered off.

2. The electric switching mechanism of the isolating switch according to claim 1, characterized in that: The transmission wheel group includes two transmission wheels which are sleeved on the driving shaft and arranged opposite to each other. The two ends of the connecting beam are respectively passed through the two transmission wheels. The driving end of the electromagnetic driver is connected to the connecting beam at the middle position between the two transmission wheels.

3. The electric switching mechanism of the isolating switch according to claim 2, characterized in that: The two transmission wheels of the transmission wheel group are provided with corresponding arc-shaped slots, and the two ends of the connecting beam are respectively penetrated in the arc-shaped slots of the two transmission wheels. The connecting beams of the two sets of electromagnetic drive modules act on the two ends of the arc-shaped slots respectively. When the electromagnetic driver pulls the transmission wheel group through the connected connecting beams, the connecting beams abut against the ends of the arc-shaped slots; after the electromagnetic driver is powered off, the elastic reset drives the connecting beam to break away from the abutment with the ends of the arc-shaped slots.

4. The electric switching mechanism of the isolating switch according to claim 3, characterized in that: The arc-shaped slot hole of the transmission wheel includes an arc-shaped segment and straight segments connected at both ends of the arc-shaped segment; the center of the arc-shaped segment coincides with the central axis of the driving shaft; the straight segment extends along the tangent direction of the arc-shaped segment, and when the electromagnetic driver pulls the transmission wheel group through the connected connecting beam, the connecting beam abuts against the straight segment.

5. The electric switching mechanism of the isolating switch according to claim 1, characterized in that: The electromagnetic driver comprises a coil frame, a coil wound on the coil frame, and a moving iron core arranged in the coil, wherein the moving iron core is connected to the connecting beam.

6. The electric switching mechanism of the isolating switch according to claim 5, characterized in that: The electromagnetic drive module also includes a connecting rod, and two ends of the connecting rod are respectively hinged on the moving iron core and the connecting beam.

7. The electric switching mechanism of the isolating switch according to claim 6, characterized in that: The electromagnetic drive module has two connecting rods which are arranged opposite to each other.

8. The electric switching mechanism of the isolating switch according to claim 1, characterized in that: It also includes a housing, wherein the drive shaft is rotatably mounted in the housing and at least one end is exposed outside the housing; the transmission wheel set and the two sets of electromagnetic drive modules are both arranged in the housing; The electromagnetic driver is fixed to the housing.

9. The electric switching mechanism of the isolating switch according to claim 1 or 8, characterized in that: The elastic reset member is a tension spring, one end of which is fixedly arranged, and the other end is connected to the connecting beam; the tension spring applies a pulling force on the connecting beam in a direction away from the electromagnetic driver.

10. The electric switching mechanism of the isolating switch according to claim 8, characterized in that: The driving shaft and the transmission wheel set are arranged in the middle of the shell, the electromagnetic drivers of the two sets of electromagnetic driving modules are arranged on one side of the shell, and the elastic reset members of the two sets of electromagnetic driving modules are arranged on the other side of the shell.

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