Transfer switch control device, transfer switch and rail vehicle

Abstract

The embodiment of the present invention provides a transfer switch control device, a transfer switch and a rail vehicle, the device comprising: a first trigger button, a first control circuit, a second trigger button, a second control circuit and a drive device; the first trigger button is connected to the first control circuit, the first control circuit is connected to the drive device; the second trigger button is connected to the second control circuit, the second control circuit is connected to the drive device; the drive device is connected to the transfer switch; when the first trigger button is activated, the first control circuit controls the drive device to drive the knife switch of the transfer switch to rotate along the first direction to switch to the target gear position; when the second trigger button is activated, the second control circuit controls the drive device to drive the knife switch of the transfer switch to rotate along the second direction to switch to the target gear position, wherein the second direction is the opposite direction of the first direction. The embodiment of the present invention can improve the operation efficiency.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of rail transit technology, and in particular to a transfer switch control device, a transfer switch and a rail vehicle. Background Art

[0002] When rail transit vehicles are in normal operation and maintenance, it is necessary to set the power supply mode of the train. For example, when the train is in normal operation, the front end of the traction drive system input and the front end of the auxiliary power system input are connected to the pantograph or current collector of the train. When the train is under maintenance, the front end of the traction drive system input and the front end of the auxiliary power system input are grounded. When the train is in the depot, the front end of the auxiliary power system input is connected to the workshop power supply, and the front end of the traction drive system input is suspended. Therefore, a conversion switch is usually provided in the high-voltage electrical box of the train to switch the power supply mode.

[0003] At present, the transfer switch is usually a manual transfer switch, such as Figure 1 As shown, the gear position is switched by the staff operating the operating handle of the conversion switch.

[0004] However, the inventors have found that this manual transfer switch has low efficiency due to the need to rely on manual operation. Summary of the invention

[0005] The invention provides a transfer switch control device, a transfer switch and a rail vehicle, so as to solve the problem of low gear switching efficiency of the transfer switch in the prior art.

[0006] In a first aspect, the present invention provides a transfer switch control device, comprising:

[0007] A first trigger button, a first control circuit, a second trigger button, a second control circuit and a drive device;

[0008] The first trigger button is connected to the first control circuit, and the first control circuit is connected to the driving device;

[0009] The second trigger button is connected to the second control circuit, and the second control circuit is connected to the driving device;

[0010] The driving device is connected to the conversion switch;

[0011] When the first trigger button is activated, the first control circuit controls the driving device to drive the knife switch of the conversion switch to rotate in a first direction and switch to a target gear position;

[0012] When the second trigger button is activated, the second control circuit controls the drive device to drive the knife switch of the conversion switch to rotate in a second direction to switch to a target gear position, wherein the second direction is the opposite direction of the first direction.

[0013] In a possible implementation, the first control circuit includes: a first contactor, a third gear position normally closed contact, and a second gear position first normally closed contact;

[0014] The first contactor comprises a first coil, a first main contact, a second main contact and a first normally open contact;

[0015] One end of the first main contact is connected to the negative electrode of the driving power supply, and the other end of the first main contact is connected to the first end of the driving device; one end of the second main contact is connected to the positive electrode of the driving power supply, and the other end of the second main contact is connected to the second end of the driving device;

[0016] The first coil, the third gear position normally closed contact, the second gear position first normally closed contact and the first normally open contact are connected in series, and the first trigger button is connected in parallel with the second gear position first normally closed contact and the first normally open contact connected in series;

[0017] The first coil is connected to the negative pole of the control power supply, and the first trigger button and the first normally open contact are connected to the positive pole of the control power supply.

[0018] In a possible implementation, the second control circuit includes: a second contactor, a second normally closed contact for the second gear, and a normally closed contact for the first gear;

[0019] The second contactor comprises a second coil, a third main contact, a fourth main contact and a second normally open contact;

[0020] One end of the third main contact is connected to the positive electrode of the driving power supply, and the other end of the third main contact is connected to the first end of the driving device; one end of the fourth main contact is connected to the negative electrode of the driving power supply, and the other end of the fourth main contact is connected to the second end of the driving device;

[0021] The second coil, the first gear position normally closed contact, the second gear position second normally closed contact and the second normally open contact are connected in series, and the second trigger button is connected in parallel with the second gear position second normally closed contact and the second normally open contact connected in series;

[0022] The second coil is connected to the negative pole of the control power supply, and the second trigger button and the second normally open contact are connected to the positive pole of the control power supply.

[0023] In a possible implementation, the first contactor further includes a first normally closed contact, and the first normally closed contact is connected in series with the second control circuit.

[0024] In a possible implementation, the second contactor further includes a second normally closed contact, and the second normally closed contact is connected in series with the first control circuit.

[0025] In one possible implementation, the conversion switch includes a first gear, a second gear and a third gear; the first gear is linked to the first gear normally closed contact, the second gear is linked to the second gear first normally closed contact and the second gear second normally closed contact, and the third gear is linked to the third gear normally closed contact.

[0026] In a second aspect, an embodiment of the present invention provides a transfer switch, comprising the transfer switch control device according to the first aspect of the embodiment of the present invention.

[0027] In a possible implementation, the conversion switch includes three gears, wherein the first gear is a workshop gear, the second gear is a grounding gear, and the third gear is a normal gear;

[0028] The first gear position is linked to the first monitoring contact, the second gear position is linked to the second monitoring contact, and the third gear position is linked to the third monitoring contact;

[0029] The first monitoring contact, the second monitoring contact and the third monitoring contact are each connected to a monitoring system of the rail vehicle.

[0030] In a possible implementation, the first port of the conversion switch is connected to the pantograph or current collector of the rail vehicle, the second port of the conversion switch is connected to the pantograph or current collector of the rail vehicle, the third port of the conversion switch is connected to the DC input end of the first traction inverter of the rail vehicle, the fourth port of the conversion switch is connected to the DC input end of the second traction inverter of the rail vehicle, the fifth port of the conversion switch is connected to the DC input end of the first auxiliary inverter of the rail vehicle, the sixth port of the conversion switch is connected to the DC input end of the first auxiliary inverter of the rail vehicle, the seventh port of the conversion switch is connected to the workshop power supply; the eighth port of the conversion switch is connected to the grounding device of the rail vehicle;

[0031] The first gear is connected to the seventh port;

[0032] The second gear is connected to the eighth port;

[0033] The third gear is connected to the first port and the second port respectively.

[0034] In a third aspect, an embodiment of the present invention provides a rail vehicle, comprising the conversion switch according to the second aspect of the embodiment of the present invention.

[0035] The transfer switch control device, transfer switch and rail vehicle provided by the embodiments of the present invention are characterized in that the transfer switch control device starts a first trigger button so that a first control circuit controls a driving device to drive the knife switch of the transfer switch to rotate along a first direction to a target gear position, and starts a second trigger button so that a second control circuit controls a driving device to drive the knife switch of the transfer switch to rotate along a second direction to the target gear position, thereby realizing automatic switching of the transfer switch gear position, without the need for staff to operate the operating handle of the transfer switch, and the operation is simple and convenient, thereby improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0037] Figure 1 It is a structural schematic diagram of a conversion switch in the prior art;

[0038] Figure 2 A schematic diagram of the structure of a transfer switch control device provided by an embodiment of the present invention;

[0039] Figure 3 Circuit of a transfer switch control device provided by an embodiment of the present invention Figure 1 ;

[0040] Figure 4 Circuit of a transfer switch control device provided by an embodiment of the present invention Figure 2 ;

[0041] Figure 5 A main circuit diagram of a transfer switch provided by an embodiment of the present invention;

[0042] Figure 6 A schematic diagram of the structure of a conversion switch provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0045] Please refer to Figure 1 , Figure 1 FIG. 1 is a schematic diagram of the structure of a conversion switch in the prior art. Figure 1 As shown, the transfer switch usually consists of three gears. The first gear is the workshop gear, that is, the train is in the depot state, the second gear is the grounding gear, that is, the train is in the maintenance state, and the third gear is the normal gear, that is, the train is in the normal operation state. In the first gear, the input front end of the auxiliary power system is connected to the workshop power supply, so that the train absorbs electric energy from the workshop power supply to provide an energy source for the auxiliary power system, the input front end of the traction drive system is suspended, and the train pantograph or current collector is suspended. In the second gear, the input front end of the auxiliary power system and the traction drive system is grounded, so that the train pantograph or current collector is suspended to prevent maintenance personnel from electric shock accidents when repairing equipment. In the third gear, the input front end of the auxiliary power system and the traction drive system is connected to the pantograph or current collector of the train, so that the train absorbs electric energy from the contact network or the third rail to provide an energy source for the auxiliary power system and the traction drive system.

[0046] The existing transfer switch is usually a manual transfer switch, which requires the staff to rotate the operating handle of the transfer switch to switch the gear. For example, if the operating handle is rotated counterclockwise, the gear is switched from the normal gear to the grounding gear and then to the workshop gear. If the operating handle is rotated clockwise, the gear is switched from the workshop gear to the grounding gear and then to the normal gear.

[0047] At present, rail transit vehicles are usually equipped with multiple transfer switches. Since the gear switching of the transfer switch requires manual operation, there are problems of complicated operation steps and low efficiency. In addition, due to improper operation, it is easy to cause the gear positions of multiple transfer switches on the same train to be inconsistent, posing a great safety risk.

[0048] The embodiment of the present invention provides a transfer switch control device to realize automatic switching of the transfer switch gear.

[0049] The technical solution of the present invention is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0050] Please refer to Figure 2 , Figure 2 A schematic diagram of the structure of a transfer switch control device provided by an embodiment of the present invention is shown in FIG. Figure 2 As shown, the transfer switch control device 200 of this embodiment includes: a first trigger button 201, a first control circuit 202, a second trigger button 203, a second control circuit 204 and a drive device 205. The first trigger button 201 is connected to the first control circuit 202, and the first control circuit 202 is connected to the drive device 205. The second trigger button 203 is connected to the second control circuit 204, and the second control circuit 204 is connected to the drive device 205. The drive device 205 is connected to the transfer switch.

[0051] When the first trigger button 201 is activated, the first control circuit 202 controls the driving device 205 to drive the knife switch of the conversion switch to rotate in the first direction and switch to the target gear position. When the second trigger button 203 is activated, the second control circuit 204 controls the driving device 205 to drive the knife switch of the conversion switch to rotate in the second direction and switch to the target gear position. The second direction is the opposite direction of the first direction.

[0052] In an embodiment of the present invention, the driving device 205 is connected to a driving power supply, and the driving power supply supplies power to the driving device 205; the first trigger button 201, the first control circuit 202, the second trigger button 203 and the second control circuit 204 are connected to a control power supply, and the control power supply supplies power to the first trigger button 201, the first control circuit 202, the second trigger button 203 and the second control circuit 204.

[0053] The driving device 205 is a driving motor, which can be a DC motor, for example, the driving device 205 is a brushless DC motor. The driving device 205 is connected to the transfer switch, for example, the driving device 205 is connected to the rotating shaft of the transfer switch. The driving device 205 drives the knife switch of the transfer switch to rotate, thereby switching the gear.

[0054] The first trigger button 201 and the second trigger button 203 can be set in the cab of the train, and the driver can switch gears in the cab without getting off the train, which is safe and time-saving. It should be understood that the first trigger button 201 and the second trigger button 203 can also be set in other locations, which is not specifically limited in the embodiment of the present invention.

[0055] When the first trigger button 201 is activated, the first control circuit 202 controls the driving device 205 to drive the knife switch of the conversion switch to rotate in the first direction and switch to the target gear position. For example, the gear positions of the conversion switch are the first gear position, the second gear position and the third gear position in sequence along the first direction. When the first trigger button 201 is activated, the first control circuit 202 controls the driving device 205 to rotate in the first direction, and the driving device 205 drives the knife switch of the conversion switch to switch from the first gear position to the second gear position, or from the second gear position to the third gear position, or from the first gear position to the third gear position.

[0056] When the second trigger button 203 is activated, the second control circuit 204 controls the driving device 205 to drive the knife switch of the conversion switch to rotate in the second direction and switch to the target gear position. For example, when the second trigger button 203 is activated, the second control circuit 204 controls the driving device 205 to rotate in the second direction, and the driving device 205 drives the knife switch of the conversion switch to switch from the third gear position to the second gear position, or from the second gear position to the first gear position, or from the third gear position to the first gear position.

[0057] The switching switch control device 200 in the embodiment of the present invention starts the first trigger button 201, so that the first control circuit 202 controls the driving device 205 to drive the knife switch of the switching switch to rotate along the first direction to the target gear position, and starts the second trigger button 203, so that the second control circuit 204 controls the driving device 205 to drive the knife switch of the switching switch to rotate along the second direction to the target gear position, thereby realizing automatic switching of the switching switch gear position, without the need for the staff to operate the operating handle of the switching switch, the operation is simple and convenient, and the efficiency is improved.

[0058] Please refer to Figure 3 , Figure 3 Circuit of a transfer switch control device provided by an embodiment of the present invention Figure 1 ,like Figure 3 As shown, the first control circuit 202 of this embodiment includes: a first contactor, a third gear normally closed contact S3 and a second gear first normally closed contact S4.

[0059] The first contactor includes: a first coil K11, a first main contact K12, a second main contact K13 and a first normally open contact K14.

[0060] One end of the first main contact K12 is connected to the negative pole DC1- of the driving power supply, and the other end of the first main contact K12 is connected to the first end M1 of the driving device. One end of the second main contact K13 is connected to the positive pole DC1+ of the driving power supply, and the other end of the second main contact K13 is connected to the second end M2 of the driving device.

[0061] The first coil K11, the third gear normally closed contact S3, the second gear first normally closed contact S4 and the first normally open contact K14 are connected in series, and the first trigger button S1 is connected in parallel with the second gear first normally closed contact S4 and the first normally open contact K14 connected in series.

[0062] The first coil K11 is connected to the negative pole DC2- of the control power supply, and the first trigger button S1 and the first normally open contact K11 are connected to the positive pole DC2+ of the control power supply.

[0063] In the embodiment of the present invention, the third gear position normally closed contact S3 is in an open state when the conversion switch is in the third gear position, and is in a closed state when the conversion switch is in other gear positions. The second gear position first normally closed contact S4 is in an open state when the conversion switch is in the second gear position, and is in a closed state when the conversion switch is in other gear positions.

[0064] When the first coil K11 is not energized, the first main contact K12, the second main contact K13 and the first normally open contact K14 are in an open state; when the first coil K11 is energized, the first main contact K12, the second main contact K13 and the first normally open contact K14 are in a closed state.

[0065] The gear positions of the conversion switch are the first gear position, the second gear position and the third gear position in sequence along the first direction. The following specifically describes the implementation methods of switching the conversion switch from the first gear position to the second gear position, from the second gear position to the third gear position and from the first gear position directly to the third gear position.

[0066] When the conversion switch is in the first gear, the third gear normally closed contact S3 is in a closed state. When the first trigger button S1 is pressed and then released, the first coil K11 is energized, the first main contact K12, the second main contact K13 and the first normally open contact K14 are closed, the second end M2 of the driving device inputs a high level, the first end M1 of the driving device inputs a low level, the driving device rotates in the first direction, the first main contact K12, the second main contact K13 and the first normally open contact K14 are in a self-holding state, that is, a closed state. When the knife switch of the conversion switch is switched to the second gear, the first normally closed contact S4 of the second gear is disconnected, the first coil K11 loses power, the first main contact K12, the second main contact K13 and the first normally open contact K14 are disconnected, the driving device stops, the knife switch of the conversion switch is in the second gear, and the first gear is switched to the second gear.

[0067] When the conversion switch is in the second gear, the normally closed contact S3 of the third gear is in a closed state, and the first normally closed contact S4 of the second gear is in an open state. When the first trigger button S1 is pressed, the first coil K11 is energized, and the first main contact K12, the second main contact K13 and the first normally open contact K14 are closed. The second end M2 of the driving device inputs a high level, and the first end M1 of the driving device inputs a low level. The driving device drives the knife switch of the conversion switch to rotate in the first direction. When the knife switch of the conversion switch leaves the second gear, the first normally closed contact S4 of the second gear is in a closed state. At this time, the first trigger button S1 is released, and the first main contact K12, the second main contact K13 and the first normally open contact K14 are in a self-holding state, that is, a closed state. When the knife switch of the conversion switch is switched to the third gear, the normally closed contact S3 of the third gear is disconnected, the first coil K11 loses power, the first main contact K12, the second main contact K13 and the first normally open contact K14 are disconnected, the driving equipment stops, the knife switch of the conversion switch is in the third gear, and the switching from the second gear to the third gear is completed.

[0068] When the conversion switch is in the first gear, the third gear normally closed contact S3 is in a closed state. When the first trigger button S1 is pressed, the first coil K11 is energized, the first main contact K12, the second main contact K13 and the first normally open contact K14 are closed, the second end M2 of the driving device inputs a high level, the first end M1 of the driving device inputs a low level, the driving device rotates in the first direction, and the first main contact K12, the second main contact K13 and the first normally open contact K14 are in a self-holding state, that is, a closed state. After the knife switch of the conversion switch passes the second gear, the first trigger button S1 is released again. When the knife switch of the conversion switch is switched to the third gear, the third gear normally closed contact S3 is disconnected, the first coil K11 loses power, the first main contact K12, the second main contact K13 and the first normally open contact K14 are disconnected, the driving device stops, the knife switch of the conversion switch is in the third gear, and the first gear is switched to the third gear.

[0069] like Figure 3 As shown, the second control circuit 204 of this embodiment includes: a second contactor, a second normally closed contact S5 for the second gear position, and a normally closed contact S6 for the first gear position.

[0070] The second contactor includes a second coil K21, a third main contact K22, a fourth main contact K23 and a second normally open contact K24.

[0071] One end of the third main contact K22 is connected to the positive pole DC1+ of the driving power supply, and the other end of the third main contact K22 is connected to the first end M1 of the driving device. One end of the fourth main contact K23 is connected to the negative pole DC- of the driving power supply, and the other end of the fourth main contact K23 is connected to the second end M2 of the driving device.

[0072] The second coil K21, the first gear normally closed contact S6, the second gear second normally closed contact S5 and the second normally open contact K24 are connected in series, and the second trigger button S2 is connected in parallel with the second gear second normally closed contact S5 and the second normally open contact K24 connected in series.

[0073] The second coil K21 is connected to the negative pole DC2- of the control power supply, and the second trigger button S2 and the second normally open contact K24 are connected to the positive pole DC2+ of the control power supply.

[0074] In the embodiment of the present invention, the first gear position normally closed contact S6 is in an open state when the conversion switch is in the first gear position, and is in a closed state when the conversion switch is in other gear positions. The second gear position second normally closed contact S5 is in an open state when the conversion switch is in the second gear position, and is in a closed state when the conversion switch is in other gear positions.

[0075] When the second coil K21 is not energized, the third main contact K22, the fourth main contact K23 and the first normally open contact K24 are in an open state. When the second coil K21 is energized, the third main contact K22, the fourth main contact K23 and the second normally open contact K24 are in a closed state.

[0076] The second direction is opposite to the first direction, and the gear positions of the conversion switch along the second direction are the third gear position, the second gear position and the first gear position. Below, the implementation methods of switching the conversion switch from the third gear position to the second gear position, from the second gear position to the first gear position and directly switching from the third gear position to the first gear position are specifically described.

[0077] When the conversion switch is in the third gear, the first gear normally closed contact S6 is in a closed state. When the second trigger button S2 is pressed and then released, the second coil K21 is energized, the third main contact K22, the fourth main contact K23 and the first normally open contact K24 are closed, the second end M2 of the driving device inputs a low level, the first end M1 of the driving device inputs a high level, the driving device drives the knife switch of the conversion switch to rotate in the second direction, and the third main contact K22, the fourth main contact K23 and the second normally open contact K24 are in a self-holding state, that is, a closed state. When the knife switch of the conversion switch is switched to the second gear, the second normally closed contact S5 of the second gear is disconnected, the second coil K21 loses power, the third main contact K22, the fourth main contact K23 and the second normally open contact K24 are disconnected, the driving device stops, the knife switch of the conversion switch is in the second gear, and the third gear is switched to the second gear.

[0078] When the conversion switch is in the second gear, the normally closed contact S6 of the first gear is in a closed state, and the second normally closed contact S5 of the second gear is in an open state. When the second trigger button S2 is pressed, the second coil K21 is energized, and the third main contact K22, the fourth main contact K23 and the second normally open contact K24 are closed. The second end M2 of the driving device inputs a low level, and the first end M1 of the driving device inputs a high level. The driving device drives the knife switch of the conversion switch to rotate in the second direction. When the knife switch of the conversion switch leaves the second gear, the second normally closed contact S5 of the second gear is in a closed state. At this time, the second trigger button S2 is released, and the third main contact K22, the fourth main contact K23 and the second normally open contact K24 are in a self-holding state, that is, a closed state. When the knife switch of the conversion switch is switched to the first gear, the normally closed contact S6 of the first gear is disconnected, the second coil K21 loses power, the third main contact K22, the fourth main contact K23 and the second normally open contact K24 are disconnected, the driving equipment stops, the knife switch of the conversion switch is in the first gear, and the switching from the second gear to the first gear is completed.

[0079] When the conversion switch is in the third gear, the first gear normally closed contact S6 is in a closed state. When the second trigger button S2 is pressed, the second coil K21 is energized, the third main contact K22, the fourth main contact K23 and the second normally open contact K24 are closed, the second end M2 of the driving device inputs a low level, the first end M1 of the driving device inputs a high level, the driving device drives the knife switch of the conversion switch to rotate in the second direction, and the third main contact K22, the fourth main contact K23 and the second normally open contact K24 are in a self-holding state, that is, a closed state. After the knife switch of the conversion switch passes the second gear, the second trigger button S2 is released again. When the knife switch of the conversion switch is switched to the first gear, the first gear normally closed contact S6 is disconnected, the second coil K21 loses power, the third main contact K22, the fourth main contact K23 and the second normally open contact K24 are disconnected, the driving device stops, the knife switch of the conversion switch is in the first gear, and the third gear is switched to the first gear.

[0080] In the above embodiment of the present invention, the gear position of the transfer switch can be switched by operating the first trigger button S1 and the second trigger button S2, and the staff does not need to operate the operating handle of the transfer switch, which is simple and convenient to operate and improves efficiency.

[0081] Please refer to Figure 4 , Figure 4 Circuit of a transfer switch control device provided by an embodiment of the present invention Figure 2 ,like Figure 4 As shown, the first contactor further includes a first normally closed contact K15, which is connected in series with the second control circuit. The second contactor further includes a second normally closed contact K25, which is connected in series with the first control circuit.

[0082] In the embodiment of the present invention, when the first coil K11 is not energized, the first normally closed contact K15 is in a closed state, and when the first coil K11 is energized, the first normally closed contact K15 is in an open state. When the second coil K21 is not energized, the second normally closed contact K25 is in a closed state, and when the second coil K21 is energized, the second normally closed contact K25 is in an open state.

[0083] The first normally closed contact K15 is connected in series with the second coil K21, the first gear normally closed contact S6, the second gear second normally closed contact S5 and the second normally open contact K24. The second normally closed contact K25 is connected in series with the first coil K11, the third gear normally closed contact S3, the second gear first normally closed contact S4 and the first normally open contact K14.

[0084] The embodiment of the present invention prevents the knife switch of the conversion switch from rotating when the first trigger button S1 and the second trigger button S2 are activated simultaneously, thereby avoiding misoperation by the staff, by connecting the first normally closed contact K15 in series in the second control circuit and the second normally closed contact K25 in series in the first control circuit.

[0085] As an embodiment of the present invention, the conversion switch includes a first gear, a second gear and a third gear. The first gear is linked with the first gear normally closed contact S6, the second gear is linked with the second gear first normally closed contact S4 and the second gear second normally closed contact S5, and the third gear is linked with the third gear normally closed contact S3.

[0086] In the embodiment of the present invention, when the conversion switch is in the first gear, the first gear normally closed contact S6 is in an open state, and when the conversion switch is in the second gear or the third gear, the first gear normally closed contact S6 is in a closed state. When the conversion switch is in the second gear, the second gear first normally closed contact S4 and the second gear second normally closed contact S5 are in an open state, and when the conversion switch is in the first gear or the third gear, the second gear first normally closed contact S4 and the second gear second normally closed contact S5 are in a closed state. When the conversion switch is in the third gear, the third gear normally closed contact S3 is in an open state, and when the conversion switch is in the first gear or the second gear, the third gear normally closed contact S3 is in a closed state.

[0087] The embodiment of the present invention further provides a switching switch, including: Figures 2 to 4 A transfer switch control device as described in any embodiment.

[0088] As an embodiment of the present invention, please refer to Figure 5 , Figure 5 The main circuit diagram of the conversion switch provided by the embodiment of the present invention is as follows: Figure 5 As shown, the transfer switch includes three gears, wherein the first gear is the workshop gear, the second gear is the grounding gear, and the third gear is the normal gear.

[0089] The first gear position is linked to the first monitoring contact, the second gear position is linked to the second monitoring contact, and the third gear position is linked to the third monitoring contact. The first monitoring contact, the second monitoring contact and the third monitoring contact are respectively connected to the monitoring system of the rail vehicle.

[0090] In an embodiment of the present invention, the first gear is linked to a first monitoring contact in addition to being linked with the first gear normally closed contact S6; the second gear is linked to a second monitoring contact in addition to being linked with the second gear first normally closed contact S4 and the second gear second normally closed contact S5; the third gear is linked to a third monitoring contact in addition to being linked with the third gear normally closed contact S3.

[0091] The first monitoring contact can be a normally open contact or a normally closed contact. When the first monitoring contact is a normally open contact, if the conversion switch is in the first gear, the first monitoring contact is in a closed state, and if the conversion switch is in the second gear or the third gear, the first monitoring contact is in an open state. When the first monitoring contact is a normally closed contact, if the conversion switch is in the first gear, the first monitoring contact is in an open state, and if the conversion switch is in the second gear or the third gear, the first monitoring contact is in a closed state.

[0092] The second monitoring contact can be a normally open contact or a normally closed contact. When the second monitoring contact is a normally open contact, if the conversion switch is in the second gear, the second monitoring contact is in a closed state, and if the conversion switch is in the first gear or the third gear, the second monitoring contact is in an open state. When the second monitoring contact is a normally closed contact, if the conversion switch is in the second gear, the second monitoring contact is in an open state, and if the conversion switch is in the first gear or the third gear, the second monitoring contact is in a closed state.

[0093] The third monitoring contact can be a normally open contact or a normally closed contact. When the third monitoring contact is a normally open contact, if the conversion switch is in the third gear, the third monitoring contact is in a closed state, and if the conversion switch is in the first gear or the second gear, the third monitoring contact is in an open state. When the third monitoring contact is a normally closed contact, if the conversion switch is in the third gear, the third monitoring contact is in an open state, and if the conversion switch is in the first gear or the second gear, the third monitoring contact is in a closed state.

[0094] The first monitoring contact, the second monitoring contact and the third monitoring contact are respectively connected to the monitoring system of the rail vehicle. The monitoring system of the rail vehicle collects the switching states of the first monitoring contact, the second monitoring contact and the third monitoring contact, so as to monitor the knife switch position of the transfer switch and determine whether a fault occurs according to the position of the knife switch.

[0095] As an embodiment of the present invention, please refer to Figure 5 and Figure 6 , Figure 6 A schematic diagram of the structure of a conversion switch provided by an embodiment of the present invention, such as Figure 5 and Figure 6 As shown, the first port X1 of the conversion switch is connected to the pantograph or current collector of the rail vehicle, the second port X2 of the conversion switch is connected to the pantograph or current collector of the rail vehicle, the third port X3 of the conversion switch is connected to the DC input end of the first traction inverter of the rail vehicle, the fourth port X4 of the conversion switch is connected to the DC input end of the second traction inverter of the rail vehicle, the fifth port X5 of the conversion switch is connected to the DC input end of the first auxiliary inverter of the rail vehicle, the sixth port X6 of the conversion switch is connected to the DC input end of the first auxiliary inverter of the rail vehicle, the seventh port X7 of the conversion switch is connected to the workshop power supply; the eighth port X8 of the conversion switch is connected to the grounding device of the rail vehicle.

[0096] The first gear is connected to the seventh port X7, the second gear is connected to the eighth port X8, and the third gear is connected to the first port X1 and the second port X2 respectively.

[0097] Through the above connection method, when the conversion switch is in different gear positions, the rail vehicle is in different states.

[0098] An embodiment of the present invention further provides a rail vehicle, comprising the conversion switch as described above.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A transfer switch control device, characterized in that: include: A first trigger button, a first control circuit, a second trigger button, a second control circuit, and a drive device; The first trigger button is connected to the first control circuit, and the first control circuit is connected to the driving device; The second trigger button is connected to the second control circuit, and the second control circuit is connected to the driving device; The driving device is connected to the conversion switch; When the first trigger button is activated, the first control circuit controls the driving device to drive the knife switch of the conversion switch to rotate in a first direction and switch to a target gear position; When the second trigger button is activated, the second control circuit controls the driving device to drive the knife switch of the conversion switch to rotate in a second direction to switch to a target gear position, wherein the second direction is the opposite direction of the first direction; Wherein, the first control circuit includes: a first contactor, a third gear normally closed contact and a second gear first normally closed contact; The first contactor includes a first coil, a first main contact, a second main contact, a first normally open contact and a first normally closed contact; One end of the first main contact is connected to the negative electrode of the driving power supply, and the other end of the first main contact is connected to the first end of the driving device; one end of the second main contact is connected to the positive electrode of the driving power supply, and the other end of the second main contact is connected to the second end of the driving device; The first coil, the third gear position normally closed contact, the second gear position first normally closed contact and the first normally open contact are connected in series, and the first trigger button is connected in parallel with the second gear position first normally closed contact and the first normally open contact connected in series; The first coil is connected to the negative pole of the control power supply, and the first trigger button and the first normally open contact are connected to the positive pole of the control power supply; The first normally closed contact is connected in series with the second control circuit; The second control circuit includes: a second contactor, a second normally closed contact for the second gear, and a normally closed contact for the first gear; The second contactor includes a second coil, a third main contact, a fourth main contact, a second normally open contact, and a second normally closed contact; One end of the third main contact is connected to the positive electrode of the driving power supply, and the other end of the third main contact is connected to the first end of the driving device; one end of the fourth main contact is connected to the negative electrode of the driving power supply, and the other end of the fourth main contact is connected to the second end of the driving device; The second coil, the first gear position normally closed contact, the second gear position second normally closed contact and the second normally open contact are connected in series, and the second trigger button is connected in parallel with the second gear position second normally closed contact and the second normally open contact connected in series; The second coil is connected to the negative pole of the control power supply, and the second trigger button and the second normally open contact are connected to the positive pole of the control power supply; The second normally closed contact is connected in series with the first control circuit.

2. The device according to claim 1, characterized in that The conversion switch includes a first gear, a second gear and a third gear; the first gear is linked with the first gear normally closed contact, the second gear is linked with the second gear first normally closed contact and the second gear second normally closed contact, and the third gear is linked with the third gear normally closed contact.

3. A transfer switch, characterized in that: It comprises the transfer switch control device according to any one of claims 1 to 2.

4. The transfer switch according to claim 3, characterized in that: The conversion switch includes three gears, wherein the first gear is the workshop gear, the second gear is the grounding gear, and the third gear is the normal gear; The first gear position is linked to the first monitoring contact, the second gear position is linked to the second monitoring contact, and the third gear position is linked to the third monitoring contact; The first monitoring contact, the second monitoring contact and the third monitoring contact are each connected to a monitoring system of the rail vehicle.

5. The transfer switch according to claim 4, characterized in that: The first port of the conversion switch is connected to the pantograph or current collector of the rail vehicle, the second port of the conversion switch is connected to the pantograph or current collector of the rail vehicle, the third port of the conversion switch is connected to the DC input end of the first traction inverter of the rail vehicle, the fourth port of the conversion switch is connected to the DC input end of the second traction inverter of the rail vehicle, the fifth port of the conversion switch is connected to the DC input end of the first auxiliary inverter of the rail vehicle, the sixth port of the conversion switch is connected to the DC input end of the first auxiliary inverter of the rail vehicle, the seventh port of the conversion switch is connected to the workshop power supply; the eighth port of the conversion switch is connected to the grounding device of the rail vehicle; The first gear is connected to the seventh port; The second gear is connected to the eighth port; The third gear is connected to the first port and the second port respectively.

6. A rail vehicle, characterized in that: It comprises a conversion switch according to any one of claims 3 to 5.

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