Modular dual power transfer switch

Abstract

A modular dual power transfer switch comprises a plurality of break units and a plurality of driving mechanisms, the main shafts of the plurality of break units are connected to each other, so that the movable contacts of the plurality of break units can move synchronously when driven, the plurality of break units are divided into a plurality of groups for one phase line of the modular dual power transfer switch; the output shafts of the plurality of driving mechanisms are connected to each other via a synchronization rod, the output shafts are connected to each group of the plurality of break units via a transmission mechanism, so that the plurality of driving mechanisms can synchronously drive each group of the plurality of break units under the action of a hand-operated part or an electromagnetic driving part; wherein the modular dual power transfer switch further comprises a plurality of mounting plates, each mounting plate comprises a plurality of limiting features for cooperating with corresponding limiting features on the corresponding driving mechanism and break unit, so that the driving mechanism and the break unit are positioned and fixed relative to the mounting plate.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical switches, and more specifically, to a modular dual-power transfer switch. Background Technology

[0002] A dual power transfer switch (TSE) is an important low-voltage electrical switch used to supply power to critical loads, ensuring a continuous power supply. Typically, dual power transfer switches are required in situations where power outages are not permissible. Like other electrical components (such as circuit breakers and load switches), dual power transfer switches are also available in different housings according to current ratings. However, compared to products like circuit breakers and load switches, the demand for dual power transfer switches is relatively small. Therefore, maximizing the reuse of components across different current housings is a highly effective way to reduce product costs and save on investment.

[0003] On the other hand, combining TSEs with smaller current housings into TSEs with larger current housings allows the larger current housing TSE to inherit the superior performance of the smaller current housing TSE, such as electrical operation performance. However, compared to traditional structures with increased geometry, combined structures have difficult-to-solve problems such as longer functional dimension chains and difficulties in standardizing references. Summary of the Invention

[0004] This invention proposes a modular dual-power transfer switch (TSE) that enables a TSE with a larger current housing to inherit the superior performance of a TSE with a smaller current housing.

[0005] The modular dual-power transfer switch according to the present invention includes: a plurality of disconnecting units, each disconnecting unit including a main shaft configured to move a moving contact between an engaged position and a disengaged position with a stationary contact when driven; a plurality of driving mechanisms, each driving mechanism having an output shaft connected to the main shaft of the disconnecting unit via a transmission mechanism, such that the output shaft transmits driving force to the main shaft of the corresponding disconnecting unit under the action of a manual operating component or an electromagnetic drive; wherein the main shafts of the plurality of disconnecting units are connected to each other such that the moving contacts of the plurality of disconnecting units can move synchronously when driven, the plurality of disconnecting units are divided into a plurality of groups, each group including at least one disconnecting unit for one phase line of the modular dual-power transfer switch; wherein the output shafts of the plurality of driving mechanisms are connected to each other via a synchronizing rod, the output shafts being connected via a synchronizing rod. Each group of the plurality of disconnecting units is connected to a transmission mechanism, such that under the action of a manual operating component or an electromagnetic drive component, the plurality of drive mechanisms can synchronously drive each group of the plurality of disconnecting units; wherein, the modular dual power transfer switch further includes a plurality of mounting plates, each mounting plate including a first limiting feature and a second limiting feature, each drive mechanism having a first corresponding limiting feature on its side, and each disconnecting unit having a second corresponding limiting feature on its side, the first limiting feature cooperating with the first corresponding limiting feature, and the second limiting feature cooperating with the second corresponding limiting feature, so that the drive mechanism and the disconnecting unit are positioned and fixed relative to the mounting plate, and wherein, the modular dual power transfer switch further includes a mounting plate positioning structure, and the plurality of mounting plates are fixed to the mounting plate positioning structure so as to be fixed parallel to each other at a certain interval.

[0006] In a preferred embodiment of the invention, every two breaking units are formed as a group, each group of breaking units corresponds to a drive mechanism, forming a phase line for a modular dual power transfer switch. One phase line achieves synchronous drive of the two groups of breaking units of the two phase lines by sharing a transmission mechanism with the other phase line. Two mounting plates are respectively fixed to the sides of the two phase lines, so that the two drive mechanisms, four breaking units and two mounting plates are combined to form a two-pole switch module.

[0007] In a preferred embodiment of the invention, the manual component is connected to the output shaft of the drive mechanism of the two two-pole switch modules, thereby combining the two two-pole switch modules into a four-pole switch module.

[0008] In a preferred embodiment of the invention, an insulating element is provided between each drive mechanism and the corresponding disconnecting unit group to ensure the required insulation distance for the modular dual power transfer switch according to the invention.

[0009] In a preferred embodiment of the invention, a plurality of mounting plates are fixed to a base so as to be parallel to each other at certain intervals.

[0010] Alternatively, multiple mounting plates are fixed parallel to each other at certain intervals by screws that can pass through the mounting plates and the drive mechanism and / or the breakout unit.

[0011] In a preferred embodiment of the invention, a plurality of drive mechanisms are arranged parallel to each other in the lateral direction, a plurality of breaking units are arranged parallel to each other in the lateral direction, a plurality of mounting plates are arranged parallel to each other in the lateral direction, and each drive mechanism and its corresponding breaking unit are arranged in the longitudinal direction, wherein the lateral direction is perpendicular to the longitudinal direction.

[0012] In a preferred embodiment of the invention, the transmission mechanism includes a first crank arm and a second crank arm connected to the output shaft of the drive mechanism, and a third crank arm connected to the main shaft of the breaking unit. The first crank arm and the second crank arm are integral and at a certain angle to each other. The free end of the first crank arm is connected to the output shaft and is configured to pivot together with the second crank arm under the drive of the output shaft. The free end of the second crank arm is connected to the third crank arm via a transmission rod, thereby driving the third crank arm to pivot, and thus driving the main shaft of the breaking unit to move.

[0013] In a preferred embodiment of the present invention, the housing of each drive mechanism has a groove, and a first crank arm and a second crank arm are disposed on the housing and are pivotable about the connection point of the first crank arm and the second crank arm. The free end of the first crank arm is disposed in the groove and is pivotable along the groove between a first position, a second position and a third position. The first position corresponds to a first power-on position, the second position corresponds to a double-splitting position, and the third position corresponds to a second power-on position. Attached Figure Description

[0014] Figure 1 A schematic block diagram of a modular dual-power transfer switch according to the present invention is shown;

[0015] Figure 2 A perspective view showing two adjacent segmented units connected to each other is shown;

[0016] Figure 3 and Figure 4 The third and fourth connecting members of the drive mechanism are shown respectively;

[0017] Figure 5 A perspective view showing two adjacent drive mechanisms connected to each other by a synchronizing rod is shown.

[0018] Figure 6 It shows Figure 5 Detailed images;

[0019] Figure 7 A perspective view showing the first drive mechanism of the first switch module connected to the first disconnect unit is shown;

[0020] Figure 8 A plan view showing the first drive mechanism of the first switch module connected to the first disconnect unit is shown, at which point the first power is on.

[0021] Figure 9 The diagram shows the first drive mechanism of the first switch module connected to the first disconnect unit, which is the second power-on position.

[0022] Figure 10 A plan view showing the first drive mechanism of the first switch module connected to the first disconnect unit is shown, at which point the third power supply is turned on.

[0023] Figure 11 A perspective view of an example of a two-pole switch module consisting of two adjacent drive mechanisms and two sets of breaker units is shown;

[0024] Figure 12 It shows Figure 11 A perspective view of the transmission mechanism shown;

[0025] Figure 13 It shows Figure 11 The view after the two-pole switch module is positioned and fixed by the mounting plate;

[0026] Figure 14 The detailed structure of the insulating component is shown;

[0027] Figure 15 It shows Figure 13 Exploded view of the two-pole switch module;

[0028] Figure 16 It shows Figure 15 Right side view of the two-pole switch module;

[0029] Figure 17 It shows two Figure 13 A perspective view of a four-pole switch module composed of two-pole switch modules;

[0030] Figure 18 yes Figure 17 Front view of a four-pole switch module. Detailed Implementation

[0031] The various embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that in the drawings, the same reference numerals are assigned to components having substantially the same or similar structure and function, and repeated descriptions of them will be omitted. The drawings in this specification are schematic diagrams to aid in illustrating the concept of the invention, schematically showing the shapes of the parts and their interrelationships.

[0032] Reference Figures 1 to 18The preferred embodiments of the present invention will be described in detail below. In the following description, a three-phase four-wire dual power transfer switch is used as an example; however, those skilled in the art should understand that the present invention can be applied to any other type of dual power transfer switch.

[0033] exist Figure 1 The example shown includes eight breaking units: first breaking unit 11, second breaking unit 12, third breaking unit 13, fourth breaking unit 14, fifth breaking unit 15, sixth breaking unit 16, seventh breaking unit 17, and eighth breaking unit 18; four drive mechanisms: first drive mechanism 21, second drive mechanism 22, third drive mechanism 23, and fourth drive mechanism 24; four mounting plates: first mounting plate 31, second mounting plate 32, third mounting plate 33, and fourth mounting plate 34; and a manual operating component 7.

[0034] exist Figure 1 In the example shown, the eight breaking units are divided into four groups: the first group consists of the first breaking unit 11 and the second breaking unit 12; the second group consists of the third breaking unit 13 and the fourth breaking unit 14; the third group consists of the fifth breaking unit 15 and the sixth breaking unit 16; and the fourth group consists of the seventh breaking unit 17 and the eighth breaking unit 18. The four breaking units on the left (i.e., breaking units numbered 11, 12, 13, and 14) and the two drive mechanisms (i.e., the first drive mechanism 21 and the second drive mechanism 22) are positioned and fixed by the first mounting plate 31 and the second mounting plate 32. The four breaking units on the right (i.e., breaking units numbered 15, 16, 17, and 18) and the two drive mechanisms (i.e., the third drive mechanism 23 and the fourth drive mechanism 24) are positioned and fixed by the third mounting plate 33 and the fourth mounting plate 34. The relative positions of the mounting plates are fixed by a mounting plate positioning structure, such as a base (not shown) or a long screw. The spindles of the four split units on the left (i.e., split units numbered 11, 12, 13, and 14) are connected to each other, enabling the spindles of these four split units to operate synchronously. The spindles of the four split units on the right (i.e., split units numbered 15, 16, 17, and 18) are connected to each other, enabling the spindles of these four split units to operate synchronously.

[0035] exist Figure 1In the example shown, the output shafts of the first drive mechanism 21 and the second drive mechanism 22 on the left are connected to each other via a synchronizing rod 4, and the output shafts of the third drive mechanism 23 and the fourth drive mechanism 24 on the right are also connected to each other via the synchronizing rod 4. The manual operating component 7 is connected to the output shafts of the middle second drive mechanism 22 and the third drive mechanism 23, such that when the manual operating component is driven by an external force, the middle second drive mechanism 22 and the third drive mechanism 23 are directly driven by the manual operating component, while the first drive mechanism 21 and the fourth drive mechanism 24 on both sides are indirectly driven via the synchronizing rod, thereby achieving synchronous movement of the four drive mechanisms. The output shafts of the drive mechanisms are connected to each group of the breaking unit via a transmission mechanism, so that under the action of the manual operating component or the electromagnetic drive, the drive mechanism can synchronously drive each group of the breaking unit.

[0036] Taking the three-phase four-wire type as an example, in Figure 1 The example contains four groups of disconnecting units, each group for one phase line. For example, the first group is for the neutral line, the second group is for the first phase line, the third group is for the second phase line, and the fourth group is for the third phase line. However, those skilled in the art should understand that the number of disconnecting units is not limited to the above description, and the number of groups of disconnecting units is not limited to the above description, but corresponds to the type of dual power transfer switch. The number of disconnecting units in each group is not limited to the above description, but is set as needed.

[0037] exist Figure 1 In the example shown, eight segmentation units are arranged in the transverse direction shown by the x-axis, and the segmentation units and the drive mechanism are arranged in the longitudinal direction shown by the y-axis. The drive mechanism can be located at the top of a group of segmentation units, or it can be located at the bottom of a group of segmentation units. In the description herein, the x-axis can be referred to as "left" and "right", the y-axis as "up" and "down", and the z-axis as "front" and "rear".

[0038] Figure 2 The diagram illustrates how the spindles of two adjacent segmentation units are connected. Each segmentation unit includes a first connector and a second connector mounted on a housing. These connectors are connected to the spindle, such that the first connector of each segmentation unit connects to the second connector of the adjacent segmentation unit, thus connecting the segmentation units to each other. Taking the first segmentation unit 11 and the second segmentation unit 12 as examples, the diagram shows the second connector 111 of the first segmentation unit 11 and the first connector 121 of the second segmentation unit 12. The first connector 121 has multiple protrusions, and the second connector 111 has multiple grooves. During connection, the multiple protrusions are inserted into the multiple grooves, thereby connecting the first segmentation unit to the second segmentation unit. Since both the first and second connectors are connected to the spindle, the spindles of the first and second segmentation units are also connected.

[0039] Figure 3 and 4 The third and fourth connecting members of the drive mechanism are shown respectively. Taking the first drive mechanism 21 as an example, the first drive mechanism 21 includes a third connecting member 212 and a fourth connecting member 213 disposed on both sides of the housing. Both the third and fourth connecting members are connected to the output shaft of the first drive mechanism. In this way, through the connection of the third connecting member, the synchronizing rod, and the fourth connecting member, the synchronous operation of multiple drive mechanisms is realized. It should be noted that only... Figure 3 and 4 The diagram shows a drive mechanism comprising two connectors. In other figures, only one connector is shown for ease of description, but those skilled in the art will understand that the drive mechanism comprises two connectors.

[0040] Figure 5 The first drive mechanism 21 and the second drive mechanism 22, which are arranged adjacently, are connected by a synchronizing rod 4. Specifically, for example, the first drive mechanism 21 includes a fourth connector protruding outside the housing, and the second drive mechanism 22 includes a third connector 221 protruding outside the housing. The first end 41 of the synchronizing rod 4 is connected to the third connector 221, and the second end of the synchronizing rod 4 is connected to the fourth connector, thereby enabling synchronized operation of the first drive mechanism and the second drive mechanism.

[0041] In the example shown, the third connector 221 includes multiple first protrusions 2211 and multiple first grooves 2212, the first end 41 of the synchronizing rod 4 includes multiple corresponding first protrusions 411 and multiple corresponding first grooves 412, the fourth connector includes multiple second protrusions and multiple second grooves, and the second end of the synchronizing rod 4 includes multiple corresponding second protrusions and multiple corresponding second grooves. During connection, the multiple corresponding first protrusions 411 of the first end 41 of the synchronizing rod 4 are respectively inserted into the multiple first grooves 2212 of the third connector 221, and the multiple first protrusions 2211 of the third connector 221 are respectively inserted into the multiple corresponding first grooves 412 of the first end of the synchronizing rod 4; the multiple corresponding second protrusions of the second end of the synchronizing rod 4 are respectively inserted into the multiple second grooves of the fourth connector, and the multiple second protrusions of the fourth connector are respectively inserted into the multiple corresponding second grooves of the second end of the synchronizing rod 4. Thus, the third connector, the synchronizing rod, and the fourth connector are connected, thereby connecting the output shafts of adjacent drive mechanisms to enable synchronized operation of the drive mechanisms. Furthermore, through the above connection, the output shafts of multiple drive mechanisms are connected to each other.

[0042] The above description is merely an example of how the synchronizing rod connects the third and fourth connecting members, thereby connecting the first and second drive mechanisms. Those skilled in the art will understand that any other type of connection can be used to connect the first and second drive mechanisms using the synchronizing rod to achieve synchronized operation. Furthermore, while the above description uses the first and second drive mechanisms as an example, those skilled in the art will understand that any two adjacent drive mechanisms can be connected using the aforementioned connection method.

[0043] The following describes the connection between the first drive mechanism 21 and the first breaking unit 11 via a transmission mechanism, using the first drive mechanism 21 and the first breaking unit 11 as examples.

[0044] like Figure 7 and 8 As shown, the first drive mechanism 21 includes a first crank arm 214 and a second crank arm 215 mounted on the housing, and a third crank arm 112 connected to the main shaft of the first breaking unit 11. The first and second crank arms 214 and 215 are pivotable about their connection point O1, forming an angle between them. The free end S of the first crank arm 214 is connected to the output shaft, allowing it to pivot about the connection point O1 under the action of the output shaft, simultaneously driving the second crank arm to pivot. Advantageously, the free end S of the first crank arm is movable along a groove 226 on the housing. The third crank arm 112 is also pivotally mounted to the housing of the first breaking unit and connected to the main shaft. One end of the transmission rod 5 is connected to the free end of the second crank arm 215, and the other end is connected to the third crank arm 112. Thus, the first crank arm pivots under the action of the output shaft of the first drive mechanism, driving the second crank arm to pivot, and subsequently, via the transmission rod 5, driving the third crank arm to pivot about the connection point O2, thereby driving the moving contact of the first breaking unit.

[0045] The connection between the first crank arm and the output shaft of the drive mechanism is conceivable to those skilled in the art; for example, the output shaft can be inserted into the corresponding opening of the first crank arm. Of course, any suitable connection between the first crank arm and the output shaft of the drive mechanism can also be conceivable, as long as the transmission of driving force is achieved. Similarly, the connection between the third crank arm and the main shaft of the splitting unit is also conceivable to those skilled in the art, again as long as the transmission of driving force is achieved.

[0046] Figure 7 and 8 The position of the crank arm of the transmission mechanism is shown when the first power is on. Figure 9 and Figure 10The positions of the crank arms of the transmission mechanism are shown in the two-way split position and the second power-on position, respectively. As can be seen from these figures, when transitioning from the first power-on position to the two-way split position, the first crank arm pivots counterclockwise from the first position to the second position, causing the second crank arm to also pivot counterclockwise, thus causing the transmission rod 5 to move vertically upwards while simultaneously causing the third crank arm to pivot counterclockwise. When transitioning from the two-way split position to the second power-on position, the first crank arm continues to pivot counterclockwise to the third position, causing the second crank arm to also pivot counterclockwise, thus causing the transmission rod 5 to move vertically upwards while simultaneously causing the third crank arm to pivot counterclockwise.

[0047] The above describes the case where one drive mechanism is connected to one slitting unit. Below, as an example, we describe the case where two drive mechanisms are connected to two sets of slitting units. Figure 11 As shown, the first crank arm 214 of the first drive mechanism 21 and the first crank arm 224 of the second drive mechanism 22 share a second crank arm 215, which is connected to the third crank arm 112 of the first splitting unit 11 and the third crank arm 122 of the second splitting unit 12 via the transmission rod 5. Figure 12 yes Figure 11 A detailed view of the transmission mechanism shared between the two adjacent mechanisms is shown. This allows two synchronously operating drive mechanisms to simultaneously drive two sets of breaker units.

[0048] The following describes in detail the method of positioning and fixing the splitting unit and the drive mechanism by using the mounting plate, taking the first splitting unit 11, the second splitting unit 12, the third splitting unit 13, the fourth splitting unit 14, the first drive mechanism 21, the second drive mechanism 22, the first mounting plate 31, and the second mounting plate 32 on the left as examples.

[0049] like Figure 13 As shown, the two-pole switch module consists of two drive mechanisms 21 and 22 and four breaking units 11, 12, 13, and 14. The drive mechanisms and breaking units are positioned longitudinally (y-axis) and laterally (z-axis) by fixing them to mounting plates 31 and 32. A first insulating member 61 is provided between the first drive mechanism 21 and the first set of breaking units 11 and 12, and a second insulating member 62 is provided between the second drive mechanism 22 and the second set of breaking units 13 and 14 to ensure the required insulation distance for the modular dual-power transfer switch according to the present invention. The detailed structure of the insulating member is shown below. Figure 14 As shown.

[0050] Figure 15 It shows Figure 13 An exploded view of the two-pole switch module. Figure 16 It shows Figure 13The right-side view of the two-pole switch module shows in detail the structure of the second mounting plate 32. In the illustrated example, the second mounting plate 32 is provided with a first limiting feature 321 and a second limiting feature 322. The side of the second drive mechanism 22 is provided with a first corresponding limiting feature 222, and the side of the fourth disconnecting unit 14 is provided with a second corresponding limiting feature 141. The first limiting feature 321 can cooperate with the first corresponding limiting feature 222, and the second limiting feature 322 can cooperate with the second corresponding limiting feature 141, so that the second drive mechanism 22 and the fourth disconnecting unit 14 can be positioned relative to the second mounting plate 32.

[0051] In the illustrated example, the first limiting feature 321 is a recess located on the upper part of the second mounting plate 32, and the first corresponding limiting feature 222 is a protrusion located on the side of the housing of the second drive mechanism. Obviously, the first limiting feature 321 and the first corresponding limiting feature 222 can also have opposite configurations; that is, the first limiting feature 321 is a protrusion located on the upper part of the second mounting plate 32, and the first corresponding limiting feature 222 is a recess or hole located on the side of the housing of the second drive mechanism. However, the form and position of the first limiting feature 321 and the first corresponding limiting feature 222 are not limited to these, as long as the positioning of the second drive mechanism 22 and the second mounting plate 32 can be achieved through the cooperation of the first limiting feature 321 and the first corresponding limiting feature 222.

[0052] In the illustrated example, the second limiting feature 322 is a protrusion located at the lower part of the second mounting plate 32, and the second corresponding limiting feature 141 is a recess located at the center point of the moving contact support of the fourth breaking unit 14. Obviously, the second limiting feature 322 and the second corresponding limiting feature 141 can also have opposite configurations, i.e., the second limiting feature 322 is a recess located at the lower part of the second mounting plate 32, and the second corresponding limiting feature 141 is a protrusion located at the center point of the moving contact support of the fourth breaking unit 14. However, the form and position of the second limiting feature 322 and the second corresponding limiting feature 141 are not limited to this, as long as the positioning of the fourth breaking unit 14 and the second mounting plate 32 can be achieved through the cooperation of the second limiting feature 322 and the second corresponding limiting feature 141.

[0053] like Figure 15 and 16As shown in detail, the upper part of the second mounting plate 32 is provided with a plurality of first fixing holes 323, and the side of the housing of the second drive mechanism 22 is also provided with a plurality of first corresponding fixing holes 223. The lower part of the second mounting plate 32 is also provided with a plurality of second fixing holes 324, and the side of the fourth splitting unit 14 is also provided with a plurality of second corresponding fixing holes 142. When the first limiting feature 321 engages with the first corresponding limiting feature 222 and the second limiting feature 322 engages with the second corresponding limiting feature 141, the plurality of first fixing holes 323 are aligned with the plurality of first corresponding fixing holes 223, and the plurality of second fixing holes 324 are aligned with the plurality of second corresponding fixing holes 142, so that the second drive mechanism 22 and the fourth splitting unit 14 can be fixed to the second mounting plate 32 by fasteners such as screws or bolts.

[0054] In an embodiment of the invention, the first mounting plate 31 and the second mounting plate 32 are perfectly mirror-symmetrical, and each segmentation unit and each drive mechanism has the same structure. Therefore, referring to the above description of the connection between the second mounting plate 32 and the second drive mechanism 22 and the fourth segmentation unit 14, the connection between the first mounting plate 31 and the first drive mechanism 21 and the first segmentation unit 11 is conceivable. After the segmentation units and drive mechanisms are fixed to the mounting plates, the mounting plates are fixed parallel to each other at certain intervals by fixing the mounting plates to the mounting plate positioning structure. For example, the relative position of the mounting plates in the lateral direction (shown by the x-axis in the figure) is determined by fixing the mounting plates to the base (not shown). Alternatively, the relative position between the mounting plates can also be fixed by connecting posts, such as those shown in the figure. Figure 15 The long screw 325 shown can penetrate both the mounting plate and the splitting unit. The mounting plate and the drive mechanism can also be fixed using the long screw. The position of the long screw penetrating the mounting plate and the drive mechanism is, for example, as shown... Figure 15 As shown by the dashed lines. Those skilled in the art will understand that the mounting plates are not limited to this method of fixing, as long as they are fixed parallel to each other at certain intervals. Once the lateral relative positions between the mounting plates are determined, the relative positions between the drive mechanism and the breaking unit are completely fixed.

[0055] The relative positional accuracy between the drive mechanism and the disconnecting unit affects the performance of the dual-power transfer switch. Furthermore, this accuracy affects the transmission accuracy between the main shaft of the drive mechanism and the main shaft of the disconnecting unit. Taking the closing action as an example, when the main shaft of the drive mechanism is in the closing position, the main shaft of the disconnecting unit may not be able to close the switch in place due to transmission accuracy issues, which will lead to a malfunction of the transfer switch. However, by setting the mounting plate and the first and second limit features, the drive mechanism and the disconnecting unit are connected through only one part (the mounting plate). The first and second limit features on the mounting plate can be machined in one piece, and the accuracy is easy to guarantee. This solution can ensure that the transmission mechanism has the shortest dimensional chain, thereby ensuring the realization of the switching function of the dual-power transfer switch.

[0056] It is conceivable that the two-pole switch module on the right, composed of the third mounting plate 33, the fourth mounting plate 34, the third drive mechanism 23, the fourth drive mechanism 24, the fifth disconnecting unit 15, the sixth disconnecting unit 16, the seventh disconnecting unit 17, the eighth disconnecting unit 18, the third insulating component 63, and the fourth insulating component 64, has the exact same structure and connection method as the two-pole switch module on the left, and therefore will not be described in detail here.

[0057] like Figure 17 and 18 As shown, two two-pole switch modules are combined into a four-pole switch module. The relative positions of the four mounting plates 31, 32, 33, and 34 in the lateral direction (x-axis direction) are determined by mounting them to a base (not shown). Alternatively, the relative positions of the mounting plates can be fixed by connecting posts that can penetrate the mounting plates, the drive mechanism, and the disconnecting unit; these connecting posts are, for example, as shown in the diagram. Figure 15 The long screw shown.

[0058] In addition, the four-pole switch module includes a manual operating component 7, connected to the output shafts of the second drive mechanism 22 and the third drive mechanism 23 located in the middle. In the illustrated example, the manual operating component is a manual control wheel. When the manual operating component 7 is driven by an external force, the second drive mechanism 22 and the third drive mechanism 23 are directly driven by the manual operating component 7, while the first drive mechanism 21 and the fourth drive mechanism 24 are indirectly driven by the manual operating component via a synchronizing rod, thereby achieving synchronous movement of the four drive mechanisms. The movement of the drive mechanisms is transmitted to the disconnecting unit through a transmission mechanism composed of a first crank arm, a second crank arm, a third crank arm, and a transmission rod, thereby realizing the switching of the dual power supply transfer switch.

[0059] In an alternative embodiment, the four drive mechanisms can also be driven separately by their respective electromagnets, and their synchronized movement can be achieved through a manual operating component and a synchronizing rod. Similarly, the movement of the drive mechanisms is transmitted to the disconnecting unit via a transmission mechanism, thereby realizing the switching of the dual power supply transfer switch.

[0060] Furthermore, the switch module can also be equipped with multiple mounting pins 8, such as... Figure 17 and 18 As shown. The mounting foot 8 is preferably in the form of an L-shaped plate with multiple screw holes. One of the L-shaped plates is used to fasten to the mounting plate, and the other is used to fasten the switch module to the mounting position.

[0061] The above embodiments describe a method for combining dual-power transfer switches (TSEs) with smaller rated currents into modular dual-power transfer switches with larger rated currents, so that the modular TSEs can inherit the excellent performance of the TSEs with smaller rated currents. For example, in the prior art, TSEs with smaller rated currents have less inertia and therefore typically have a faster contact opening speed, resulting in better electrical life performance. TSEs with larger rated currents, however, have greater inertia and therefore cannot achieve a faster contact opening speed, leading to poorer electrical life performance. In the technical solution of this invention, TSEs with smaller rated currents are combined into modular TSEs, such that the contact opening speed of the modular TSEs with larger rated currents is almost the same as that of the TSEs with smaller rated currents, thereby enabling the modular TSEs to obtain electrical performance as good as those of the TSEs with smaller rated currents.

[0062] The modular design of this invention maximizes the reuse of components such as drive mechanisms and disconnection units, thereby effectively reducing product costs, investment, and project cycles. Furthermore, multiple drive mechanisms and disconnection units are positioned and fixed using only mounting plates and bases or connecting columns, eliminating the need for housings as required by traditional dual-power transfer switches. This minimizes the product's functional dimension chain while still ensuring excellent electrical performance.

[0063] Furthermore, compared to existing technologies, in the technical solution of this invention, the mounting feet are directly fixed to the mounting plate rather than the modular TSE's outer shell. Therefore, the installation and fixation of the TSE module are achieved by the mounting plate, and the impact during operation is also borne by the mounting plate. This allows the TSE module's outer shell to be made of a thinner and lighter material, significantly reducing costs. The mounting plate, made of metal (e.g., steel plate), has superior strength and rigidity compared to ordinary insulating materials (e.g., plastic shells, plastic base frames, etc.), giving the modular TSE excellent mechanical lifespan.

[0064] The foregoing description of exemplary embodiments of the modular dual-power transfer switch proposed in this invention has been detailed with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of this invention, and various combinations can be made to the various technical features and structures proposed in this invention without exceeding the protection scope of this invention.

Claims

1. A modular dual-power transfer switch, comprising: Multiple breaking units, each breaking unit including a spindle, the spindle being configured to move a moving contact between an engaged position and a disengaged position with a stationary contact when driven; Multiple drive mechanisms, each with an output shaft, are connected to the main shaft of the breaking unit via a transmission mechanism, so that the output shaft transmits driving force to the main shaft of the corresponding breaking unit under the action of a manual component or an electromagnetic drive component. The main shafts of the plurality of disconnecting units are connected to each other so that the moving contacts of the plurality of disconnecting units can move synchronously when driven. The plurality of disconnecting units are divided into a plurality of groups, each group including at least one disconnecting unit for one phase line of a modular dual power transfer switch. The output shafts of the multiple drive mechanisms are connected to each other via a synchronizing rod, and the output shafts are connected to each group of the multiple breaking units via a transmission mechanism, so that under the action of the manual operation component or the electromagnetic drive component, the multiple drive mechanisms can synchronously drive each group of the multiple breaking units. The modular dual-power transfer switch further includes multiple mounting plates, each mounting plate including a first limiting feature and a second limiting feature. Each drive mechanism has a first corresponding limiting feature on its side, and each disconnecting unit has a second corresponding limiting feature on its side. The first limiting feature can cooperate with the first corresponding limiting feature, and the second limiting feature can cooperate with the second corresponding limiting feature, so that the drive mechanism and the disconnecting unit are positioned and fixed relative to the mounting plate. The modular dual-power transfer switch also includes a mounting plate positioning structure, and the multiple mounting plates are fixed to the mounting plate positioning structure to be parallel to each other at a certain interval.

2. The modular dual-power transfer switch according to claim 1, wherein, Two disconnecting units form a group, and each group of disconnecting units corresponds to a drive mechanism, forming a phase line for a modular dual power transfer switch. One phase line achieves synchronous drive of the two groups of disconnecting units of the two phase lines by sharing a transmission mechanism with the other phase line. Two mounting plates are fixed to the sides of the two phase lines respectively, so that two drive mechanisms, four disconnecting units and two mounting plates are combined to form a two-pole switch module.

3. The modular dual-power transfer switch according to claim 2, wherein, The manual control unit is connected to the output shaft of the drive mechanism of the two two-pole switch modules, thereby combining the two two-pole switch modules into a four-pole switch module.

4. The modular dual-power transfer switch according to claim 1, wherein, Each drive mechanism is connected to its corresponding break-off unit with an insulating component.

5. The modular dual-power transfer switch according to claim 1, wherein, The mounting plate positioning structure is a base.

6. The modular dual-power transfer switch according to claim 1, wherein, The mounting plate positioning structure is a screw that can pass through the mounting plate and the drive mechanism and / or the breaking unit.

7. The modular dual-power transfer switch according to claim 1, wherein, The plurality of drive mechanisms are arranged parallel to each other in the lateral direction, the plurality of segmentation units are arranged parallel to each other in the lateral direction, the plurality of mounting plates are arranged parallel to each other in the lateral direction, and each drive mechanism and its corresponding segmentation unit are arranged in the longitudinal direction, wherein the lateral direction is perpendicular to the longitudinal direction.

8. The modular dual-power transfer switch according to any one of claims 1 to 7, wherein, The transmission mechanism includes a first crank arm and a second crank arm connected to the output shaft of the drive mechanism, and a third crank arm connected to the main shaft of the splitting unit. The first crank arm and the second crank arm are integral and at a certain angle to each other. The free end of the first crank arm is connected to the output shaft and is configured to pivot together with the second crank arm under the drive of the output shaft. The free end of the second crank arm is connected to the third crank arm via a transmission rod, thereby driving the third crank arm to pivot, and thus driving the main shaft of the splitting unit to move.

9. The modular dual-power transfer switch according to claim 8, wherein, Each drive mechanism has a groove in its housing. A first crank arm and a second crank arm are mounted on the housing and can pivot around the connection point of the first crank arm and the second crank arm. The free end of the first crank arm is located in the groove and can pivot along the groove between a first position, a second position and a third position. The first position corresponds to the first power-on position, the second position corresponds to the double-splitting position, and the third position corresponds to the second power-on position.

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