Switch control device, relay protector and control method of relay protector

Abstract

The invention belongs to the technical field of relay protection, and discloses a switch control device, a relay protector and a control method of the relay protector.The switch control device is used for controlling opening and closing of a switch and comprises a first driving assembly, a second driving assembly and a control module; the control module is in communication connection with the first driving assembly and the second driving assembly and is used for receiving an input instruction and an exit instruction, after the control module receives the input instruction, the first driving assembly can drive the pressing plate assembly to rotate to the first position to make contact with the second pole, and then the second driving assembly drives the second nut to rotate to the third position to be locked. And after the control module receives an exit instruction, the second driving assembly drives the second nut to rotate to a fourth position to release the pressing plate assembly, and then the first driving assembly drives the pressing plate assembly to rotate to a second position to be separated from the second pole. According to the invention, manual rotation of the pressing plate assembly by personnel is avoided, the switching efficiency is improved, and the state of the current pressing plate assembly can be accurately judged.

Description

Technical Field

[0001] The present invention relates to the field of relay protection, and in particular to a switch control device, a relay protector and a control method of the relay protector. Background Art

[0002] Safety is the top priority in power production, and the safe operation of relay protection devices is the most important safety guarantee for the power system.

[0003] In the existing relay protection device, one end of the pressure plate assembly is arranged on the first electrode column and can rotate under the driving mechanism. When the pressure plate assembly does not need to rotate, it is fixed on the first electrode column. When the pressure plate assembly rotates, it switches between the input position and the withdrawal position. The input position is that the other end of the pressure plate assembly rotates to the second electrode column and is tightened by a nut. The withdrawal position is that the other end of the pressure plate assembly rotates to be separated from the second electrode column. In the prior art, the above operation is usually performed manually, the switching efficiency is low, and the human eye is required to judge the current state of the relay protection device, which is easy to cause misjudgment and is very dangerous.

[0004] Therefore, there is an urgent need for a switch control device, a relay protector and a control method of the relay protector to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a switch control device, a relay protector and a control method for a relay protector, so as to solve the technical problems in the prior art that the manual switching switch is unsafe and inefficient, and that the human eye is required to judge the current state of the relay protection device, which is prone to misjudgment, so as to achieve the technical effect of improving the switching efficiency and accurately judging the current state of the pressure plate assembly.

[0006] As conceived above, the technical solution adopted by the present invention is:

[0007] In a first aspect, a switch control device is provided, which is used to control the opening and closing of a switch, wherein the switch comprises a first pole, a second pole, a pressure plate assembly, and a second nut screwed to the second pole; a first end of the pressure plate assembly is rotatably connected to the first pole, a second end of the pressure plate assembly is detachably in contact with the second pole, and the second nut is used to press the second end against the second pole or release the second end;

[0008] The switch control device comprises:

[0009] A first driving assembly is drivingly connected to the pressure plate assembly, and the first driving assembly is used to drive the pressure plate assembly to reciprocate between a first position in contact with the second pole and a second position separated from the second pole;

[0010] A second driving assembly is drivingly connected to the second nut, and the second driving assembly is used to drive the second nut to reciprocate between a third position for pressing the second end and a fourth position for releasing the second end;

[0011] A control module, which is in communication with both the first drive assembly and the second drive assembly and is configured to receive an input instruction and an exit instruction;

[0012] When receiving an input instruction, the control module controls the first drive assembly to drive the pressure plate assembly to rotate toward the first position, and after rotating to the first position, controls the second drive assembly to drive the second nut to rotate toward the third position; when receiving an exit instruction, the control module controls the second drive assembly to drive the second nut to rotate toward the fourth position, and after rotating to the fourth position, controls the first drive assembly to drive the pressure plate assembly to rotate toward the second position.

[0013] Optionally, the first driving assembly includes a first driving member and a first transmission button connected to an output end of the first driving member, and the first transmission button is engaged with a first end of the pressing plate assembly and circumferentially limits the pressing plate assembly;

[0014] The first transmission button drives the pressing plate assembly to rotate under the drive of the first driving member.

[0015] Optionally, the pressure plate assembly includes a first nut and a protective pressure plate, the first nut is threadedly connected to the first pole, and the protective pressure plate is rotatably sleeved on the first pole;

[0016] The first transmission button includes a connecting sleeve and a clamp that are connected to each other, the connecting sleeve is provided with a first accommodating groove, the inner wall of the first accommodating groove is provided with a first circumferential limiting structure, the outer wall of the first nut is provided with a second circumferential limiting structure, the first accommodating groove is engaged with the first nut, and the first circumferential limiting structure cooperates with the second circumferential limiting structure to limit the circumferential rotation of the connecting sleeve relative to the first nut; the clamp is clamped on the protective pressure plate.

[0017] Optionally, the second driving assembly includes a second driving member and a second transmission button connected to an output end of the second driving member, and the second transmission button is engaged with the second nut and circumferentially limited;

[0018] The second transmission button drives the second nut to rotate under the drive of the second driving member.

[0019] Optionally, the second transmission button is provided with a second accommodating groove, the inner wall of the second accommodating groove is provided with a third circumferential limiting structure, the outer wall of the second nut is provided with a fourth circumferential limiting structure, the second accommodating groove is engaged with the second nut, and the third circumferential limiting structure cooperates with the fourth circumferential limiting structure to limit the circumferential rotation of the second transmission button relative to the second nut.

[0020] Optionally, the switch control device further comprises a trigger assembly communicatively connected to the control module, a first paddle drivingly connected to the output end of the first drive assembly, and a second paddle drivingly connected to the output end of the second drive assembly, wherein a first protrusion is convexly provided on an outer periphery of the first paddle, and a second protrusion is convexly provided on an outer periphery of the second paddle;

[0021] The trigger assembly comprises a first trigger part, a second trigger part, a third trigger part and a fourth trigger part; when the pressure plate assembly is located at the first position, the first trigger part is triggered by the first protrusion or the first driving assembly; when the pressure plate assembly is located at the second position, the second trigger part is triggered by the first protrusion; when the second nut is located at the third position, the third trigger part is triggered by the second protrusion; when the second nut is located at the fourth position, the fourth trigger part is triggered by the second protrusion.

[0022] Optionally, the trigger assembly includes a first limit switch, a second limit switch, a third limit switch and a fourth limit switch communicatively connected to the control module;

[0023] The first limit switch is provided with the first trigger part; the second limit switch is provided with the second trigger part; the third limit switch is provided with the third trigger part; and the fourth limit switch is provided with the fourth trigger part.

[0024] Optionally, the switch control device further comprises a main bracket and an auxiliary bracket detachably connected to the main bracket;

[0025] The shells of the first drive assembly and the second drive assembly are arranged on the main bracket, the main bracket is provided with a first slot, the auxiliary bracket is provided with a second slot opposite to the first slot, the first slot is engaged with one of the first pole and the second pole, and the second slot is engaged with the other of the first pole and the second pole, so that the shell is clamped tightly to the switch.

[0026] In a second aspect, a relay protector is provided, comprising a switch and the above-mentioned switch control device; the switch comprises a first pole, a second pole, a pressure plate assembly and a second nut screwed to the second pole; the first end of the pressure plate assembly is rotatably connected to the first pole, the second end of the pressure plate assembly is detachably in contact with the second pole, and the second nut is used to press the second end to the second pole or release the second end; the switch control device is transmission-connected to the pressure plate assembly and the second nut.

[0027] In a third aspect, a control method of a relay protection device is provided, which is applied to the above-mentioned relay protection device, comprising:

[0028] Receive entry or exit instructions,

[0029] If the instruction is an input instruction, the control module controls the first driving assembly to drive the pressing plate assembly to rotate to the first position, and after rotating to the first position, controls the second driving assembly to drive the second nut to rotate to the third position;

[0030] If the instruction is an exit instruction, the control module controls the second driving assembly to drive the second nut to rotate to the fourth position, and after rotating to the fourth position, controls the first driving assembly to drive the pressure plate assembly to rotate to the second position.

[0031] Beneficial effects of the present invention:

[0032] The switch control device provided by the present invention is connected to the pressure plate assembly through a first drive component, the second drive component is connected to the second nut through a drive connection, the control module is communicatively connected to the first drive component and the second drive component, and is configured to receive input instructions and output instructions, so that the input and output of the switch are achieved by the control module controlling the first drive component to rotate the pressure plate assembly and the second drive component to rotate the second nut after receiving the instructions, thereby avoiding manual rotation of the pressure plate assembly by personnel and improving switching efficiency. Moreover, by rotating the pressure plate assembly through the control module and the drive assembly, the position rotation of the pressure plate assembly can be predicted, and the current state of the pressure plate assembly can be accurately judged.

[0033] The relay protector provided by the present invention can control the opening and closing of the switch through the switch control device, avoiding manual control of the switch by personnel, which not only improves switching efficiency but also is safer.

[0034] The control method of the relay protector provided by the present invention can accurately control the position of the protection pressure plate in the relay protector, thereby controlling the opening and closing of the switch, thereby realizing the intelligence of the power equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. 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 the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0036] Figure 1 is a schematic diagram of a first nut provided by an embodiment of the present invention being located at a first position and a second nut being located at a third position;

[0037] Figure 2 is a structural schematic diagram of a first transmission button provided in an embodiment of the present invention;

[0038] Figure 3 is a schematic structural diagram of a second transmission button provided by an embodiment of the present invention;

[0039] Figure 4 is a schematic diagram of a first paddle and a second paddle provided in an embodiment of the present invention;

[0040] Figure 5 Schematic diagram of a first nut located at a first position and a second nut located at a fourth position provided by an embodiment of the present invention

[0041] Figure 6 Schematic diagram of a first nut located at the second position and a second nut located at the fourth position provided by an embodiment of the present invention

[0042] Figure 7 is a schematic structural diagram of a main support provided by an embodiment of the present invention;

[0043] Figure 8 It is a schematic diagram of the structure of the auxiliary bracket provided in an embodiment of the present invention.

[0044] In the figure:

[0045] 11. first pole; 12. first nut; 121. second circumferential limiting structure;

[0046] 21. second pole; 22. second nut; 221. fourth circumferential limiting structure;

[0047] 3. Press plate assembly; 31. Protective press plate;

[0048] 41, first transmission button; 411, connecting sleeve; 4111, first circumferential limiting structure; 412, clamp; 42, second transmission button; 421, third circumferential limiting structure;

[0049] 5. Control module;

[0050] 6. Trigger assembly; 61. First limit switch; 62. Second limit switch; 63. Third limit switch; 64. Fourth limit switch;

[0051] 611, first triggering unit; 621, second triggering unit; 631, third triggering unit; 641, fourth triggering unit;

[0052] 7. first paddle; 71. first protrusion;

[0053] 8. second paddle; 81. second protrusion;

[0054] 91. Main bracket; 911. First card slot; 92. Auxiliary bracket; 921. Second card slot. DETAILED DESCRIPTION

[0055] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention are further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, not all.

[0056] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0057] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] The invention discloses a relay protector, which can quickly cut off the faulty part when a fault occurs in the power system to protect the safe operation of the power system.

[0059] like Figure 1As shown, the relay protector includes a switch and a switch control device. The switch includes a first pole 11, a second pole 21, a pressure plate assembly 3, and a second nut 22 screwed to the second pole 21; the first end of the pressure plate assembly 3 is rotatably connected to the first pole 11, the second end of the pressure plate assembly 3 is detachably in contact with the second pole 21, and the second nut 22 is used to press the second end to the second pole 21 or release the second end; the switch control device is drivingly connected to the pressure plate assembly 3 and the second nut 22.

[0060] It can be understood that the switch in the relay protector is controlled by the switch control device, and the second nut 22 presses the second end of the pressure plate assembly 3 to the second pole 21 to achieve conduction between the first pole 11 and the second pole 21, or the second nut 22 releases the second end of the pressure plate assembly 3 to cut off the first pole 11 and the second pole 21 that rely on the pressure plate assembly 3 to achieve conduction. The switch control device can be used to control the opening and closing of the switch, avoiding manual control of the switch by personnel, which not only improves switching efficiency but also is safer.

[0061] like Figure 1 As shown, the switch control device disclosed in the present invention includes a first drive assembly, a second drive assembly and a control module 5. The first drive assembly is connected to the pressure plate assembly 3 in a transmission manner, and the first drive assembly is used to drive the pressure plate assembly 3 to reciprocate between a first position in contact with the second pole 21 and a second position separated from the second pole 21. The second drive assembly is connected to the second nut 22 in a transmission manner, and the second drive assembly is used to drive the second nut 22 to reciprocate between a third position of pressing the second end and a fourth position of releasing the second end. The control module 5 is connected to both the first drive assembly and the second drive assembly in a communication manner, and the control module 5 is configured to receive an input instruction and an exit instruction. When receiving the input instruction, the control module 5 controls the first drive assembly to drive the pressure plate assembly 3 to rotate to the first position, and after rotating to the first position, controls the second drive assembly to drive the second nut 22 to rotate to the third position; when receiving the exit instruction, the control module 5 controls the second drive assembly to drive the second nut 22 to rotate to the fourth position, and after rotating to the fourth position, controls the first drive assembly to drive the pressure plate assembly 3 to rotate to the second position.

[0062] The switch control device provided by the present invention is connected to the pressure plate assembly 3 through a first drive component, and the second drive component is connected to the second nut 22 through a second drive component. The control module 5 is communicatively connected to the first drive component and the second drive component, and is configured to receive input instructions and output instructions, so that the input and output of the switch are achieved by controlling the first drive component to rotate the pressure plate assembly 3 and the second drive component to rotate the second nut 22 after receiving the instructions, thereby avoiding manual rotation of the pressure plate assembly 3 by personnel and improving switching efficiency. Moreover, by rotating the pressure plate assembly 3 through the control module 5 and the drive component, the position rotation of the pressure plate assembly 3 can be predicted, and the current state of the pressure plate assembly 3 can be accurately judged.

[0063] Further, the first driving assembly includes a first driving member and a first transmission button 41 connected to the output end of the first driving member, the first transmission button 41 is engaged with the first end of the pressure plate assembly 3 and circumferentially limits the pressure plate assembly 3. The first transmission button 41 drives the pressure plate assembly 3 to rotate under the drive of the first driving member. The second driving assembly includes a second driving member and a second transmission button 42 connected to the output end of the second driving member, the second transmission button 42 is engaged with the second nut 22 and circumferentially limits the position. The second transmission button 42 drives the second nut 22 to rotate under the drive of the second driving member.

[0064] Specifically, Figure 2 and Figure 3 As shown, in this embodiment, the first driving member and the second driving member are both reduction motors, the cross section of the output shaft of the reduction motor is D-shaped, and a D-shaped hole is opened between the first transmission button 41 and the second transmission button 42, and is connected to the output shaft through the D-shaped hole so as to be driven by the reduction motor. The reduction motor is composed of a small DC motor, a turbine and a multi-stage reduction gear with spur teeth, which can realize the conversion of high-speed small torque into low-speed large torque, and is convenient for controlling the rotation of the pressure plate assembly 3 and the second nut 22.

[0065] Further, see Figure 1 The pressure plate assembly 3 includes a first nut 12 and a protective pressure plate 31. The first nut 12 is threadedly connected to the first pole 11, and the protective pressure plate 31 is rotatably sleeved on the first pole 11. The first transmission button 41 includes a connecting sleeve 411 and a clamp 412 that are connected to each other. The connecting sleeve 411 is provided with a first receiving groove, and the inner wall of the first receiving groove is provided with a first circumferential limiting structure 4111. The outer wall of the first nut 12 is provided with a second circumferential limiting structure 121. The first receiving groove is engaged with the first nut 12, and the first circumferential limiting structure 4111 cooperates with the second circumferential limiting structure 121 to limit the connecting sleeve 411 from rotating circumferentially relative to the first nut 12; the clamp 412 is clamped on the protective pressure plate 31. Exemplarily, the clamp 412 is provided with a limiting groove that matches the protective pressure plate 31.

[0066] Specifically, Figure 1 and Figure 2 As shown, in this embodiment, the connecting sleeve 411 and the clamp 412 are integrally formed. The first circumferential limiting structure 4111 is a groove opened on the inner wall of the first receiving groove, and the second circumferential limiting structure 121 is a protrusion provided on the first nut 12 to cooperate with the groove; when the first receiving groove is sleeved on the first nut 12, the protrusion is engaged with the groove, and the clamp 412 is also clamped on the protective pressure plate 31, so that the protective pressure plate 31 and the first nut 12 can rotate synchronously under the drive of the first driving member. At the same time, since the clamp 412 and the connecting sleeve 411 will not rotate relative to each other, at this time, the protective pressure plate 31 clamped by the clamp 412 will not rotate relative to the first pole 11, thereby reducing the steps of fixing the protective pressure plate 31 in the withdrawal position.

[0067] Exemplarily, a plurality of grooves are circumferentially arranged on the inner wall of the first receiving groove, and a plurality of protrusions are arranged on the outer periphery of the first nut 12 and engage with the grooves in a one-to-one correspondence.

[0068] In some other embodiments, the first nut 12 is a conventional hexagonal nut, and the first receiving groove only needs to engage with two parallel side walls of the hexagonal nut, so that the protection plate 31 and the first nut 12 can rotate synchronously under the drive of the first driving member.

[0069] In some other embodiments, one of the connecting sleeve 411 and the clamp 412 is provided with a protrusion, and the other is provided with a slot, and the connecting sleeve 411 and the clamp 412 are clamped and can rotate synchronously under the drive of the first driving component.

[0070] Further, see Figure 3 The second transmission button 42 is provided with a second accommodating groove, the inner wall of the second accommodating groove is provided with a third circumferential limiting structure 421, the outer wall of the second nut 22 is provided with a fourth circumferential limiting structure 221, the second accommodating groove is engaged with the second nut 22, and the third circumferential limiting structure 421 cooperates with the fourth circumferential limiting structure 221 to limit the circumferential rotation of the second transmission button 42 relative to the second nut 22.

[0071] Specifically, Figure 3 As shown, the third circumferential limiting structure 421 is a groove opened on the inner wall of the second accommodating groove, and the fourth circumferential limiting structure 221 is a protrusion arranged on the second nut 22 and matching with the groove; when the second accommodating groove is sleeved on the second nut 22, the protrusion is engaged with the groove, so that the second nut 22 can rotate under the drive of the second driving member.

[0072] Exemplarily, a plurality of grooves are circumferentially arranged on the inner wall of the second receiving groove, and a plurality of protrusions that engage with the grooves in a one-to-one correspondence are arranged on the outer periphery of the second nut 22 .

[0073] In some other embodiments, the second nut 22 is a conventional hexagonal nut, and the second receiving groove only needs to be engaged with two parallel side walls of the hexagonal nut to enable the second nut 22 to rotate under the drive of the second driving member.

[0074] Further, the switch control device further comprises a trigger assembly 6 connected to the control module 5 in communication, a first paddle 7 connected to the output end of the first drive assembly in transmission, and a second paddle 8 connected to the output end of the second drive assembly in transmission. The outer periphery of the first paddle 7 is provided with a first protrusion 71, and the outer periphery of the second paddle 8 is provided with a second protrusion 81. The trigger assembly 6 comprises a first trigger portion 611, a second trigger portion 621, a third trigger portion 631, and a fourth trigger portion 641. When the pressure plate assembly 3 is located at the first position, the first trigger portion 611 is triggered by the first protrusion 71 or the first drive assembly, so that the control module 5 receives a signal that the pressure plate assembly 3 moves to the first position. When the pressure plate assembly 3 is located at the second position, the second trigger portion 621 is triggered by the first protrusion 71, so that the control module 5 receives a signal that the pressure plate assembly 3 moves to the second position. When the second nut 22 is located at the third position, the third trigger portion 631 is triggered by the second protrusion 81, so that the control module 5 receives a signal that the second nut 22 moves to the third position. When the second nut 22 is located at the fourth position, the fourth triggering portion 641 is triggered by the second protrusion 81 , so that the control module 5 receives a signal that the second nut 22 moves to the fourth position.

[0075] Specifically, Figure 4 As shown, in this embodiment, the first paddle 7 and the second paddle 8 are also provided with D-shaped holes, and are plugged with the output shaft of the reduction motor through the D-shaped holes so as to be driven by the reduction motor.

[0076] In this embodiment, when the pressure plate assembly 3 is located in the first position, the first trigger part 611 can be triggered by the first protrusion 71, or, when the pressure plate assembly 3 is located in the first position, the first trigger part 611 can be triggered by the clamp 412 of the first transmission button 41 of the first driving assembly.

[0077] Further, in this embodiment, the trigger assembly 6 includes a first limit switch 61, a second limit switch 62, a third limit switch 63 and a fourth limit switch 64 which are communicatively connected to the control module 5. The first limit switch 61 is provided with a first trigger portion 611; the second limit switch 62 is provided with a second trigger portion 621; the third limit switch 63 is provided with a third trigger portion 631; and the fourth limit switch 64 is provided with a fourth trigger portion 641.

[0078] Taking the case where the first triggering portion 611 is triggered by the side wall of the clamp 412 as an example, at this time, only one first protrusion 71 may be provided on the first paddle 7. Of course, a plurality of first protrusions 71 may also be provided.

[0079] When the switch is in the on state, Figure 1 As shown, the first nut 12 of the pressure plate assembly 3 and the protective pressure plate 31 are both in the first position, and the first triggering part 611 is triggered by the clamp 412 clamped on the protective pressure plate 31, so that the first limit switch 61 is in a closed state. The second nut 22 triggers the third triggering part 631 through the second protrusion 81 of the second paddle 8 coaxial therewith, so that the third limit switch 63 is in a closed state. The second triggering part 621 and the fourth triggering part 641 are not triggered, and the second limit switch 62 and the fourth limit switch 64 are both in an open state.

[0080] When the control module 5 receives the exit instruction, the second driving member drives the second transmission button 42 and the second paddle 8 coaxial therewith to rotate, and the second protrusion 81 on the second paddle 8 triggers the fourth triggering part 641. Figure 5 As shown, the fourth limit switch 64 changes from the open state to the closed state, the second nut 22 is located at the fourth position, and the first nut 12 and the protective pressure plate 31 of the pressure plate assembly 3 are both in the first position. After receiving the signal that the second nut 22 moves to the fourth position, the control module 5 closes the second driving member, opens the first driving member, and drives the first transmission button 41 and the first paddle 7 coaxial therewith to rotate until the first protrusion 71 of the first paddle 7 triggers the second triggering part 621. At this time, Figure 6 As shown, the second limit switch 62 is also switched from the open state to the closed state, and the pressure plate assembly 3 rotates to the second position. The first trigger part 611 and the third trigger part 631 are not triggered, and the first limit switch 61 and the third limit switch 63 are both in the open state. When the first protrusion 71 triggers the second trigger part 621, the second limit switch 62 is changed from the open state to the closed state, and a signal can be sent to the control module 5, and then the control module 5 controls the first driving member to stop rotating, and the switch is withdrawn.

[0081] That is, when the switch is in the exit state, the first limit switch 61 and the third limit switch 63 are in the open state, and the second limit switch 62 and the fourth limit switch 64 are in the closed state.

[0082] When the control module 5 receives the input command, it controls the first driving member to drive the first transmission button 41 and the first paddle 7 to rotate, and the second end of the pressure plate assembly 3 approaches the second nut 22 until the clamp 412 triggers the first trigger part 611. At this time, Figure 5As shown, the first limit switch 61 changes from an open state to a closed state, indicating that the pressure plate assembly 3 rotates to the first position, the first nut 12 is locked, and the second end of the pressure plate assembly 3 contacts the second pole 21. After receiving the signal that the pressure plate assembly 3 rotates to the first position, the control module 5 controls the second drive member to drive the second transmission button 42 and the second paddle 8 to rotate, so as to drive the second nut 22 to press the second end of the pressure plate assembly 3. When the second protrusion 81 of the second paddle 8 triggers the third trigger part 631, the third limit switch 63 changes from an open state to a closed state, indicating that the second nut 22 rotates to the third position, pressing the second end of the pressure plate assembly 3 against the second pole 21, and the first pole 11 and the second pole 21 are connected. At this time, the state of the switch control device is as shown in FIG. Figure 1 As shown, the second trigger part 621 and the fourth trigger part 641 are not triggered, and the second limit switch 62 and the fourth limit switch 64 are both in the open state. When the second protrusion 81 triggers the third trigger part 631, the third limit switch 63 changes from the open state to the closed state, and a signal can be sent to the control module 5, and then the control module 5 controls the second driving member to stop rotating, and the switch is put into place.

[0083] For example, two second protrusions 81 are distributed along the circumferential direction on the second paddle 8, one of which is used to trigger the third limit switch 63, and the other is used to trigger the fourth limit switch 64, which can reduce the rotation stroke of the second paddle 8 and increase the switching speed between the input state and the output state. In other embodiments, only one second protrusion 81 can also be provided.

[0084] In some other embodiments, the trigger component 6 includes a trigger switch communicatively connected to the control module 5 , and the trigger switch is provided with a first trigger part 611 , a second trigger part 621 , a third trigger part 631 and a fourth trigger part 641 .

[0085] Furthermore, the switch control device further includes a main bracket 91 and an auxiliary bracket 92 detachably connected to the main bracket 91. The housings of the first drive assembly and the second drive assembly are arranged on the main bracket 91, the main bracket 91 is provided with a first slot 911, the auxiliary bracket 92 is provided with a second slot 921 opposite to the first slot 911, the first slot 911 is engaged with one of the first pole 11 and the second pole 21, and the second slot 921 is engaged with the other of the first pole 11 and the second pole 21, so that the housing is clamped tightly to the switch.

[0086] Specifically, see Figure 5 and Figure 6In this embodiment, the first drive assembly and the second drive assembly are directly arranged in the main bracket 91, and the output shaft of the reduction motor is exposed, so as to facilitate the cooperation between the first transmission button 41 and the first nut 12 and the cooperation between the second transmission button 42 and the second nut 22. The main bracket 91 is also provided with a first slot 911 below corresponding to the second transmission button 42, and the first slot 911 is engaged with the second pole 21. The auxiliary bracket 92 is provided with a second slot 921 opposite to the first slot 911. The auxiliary bracket 92 is screwed to the main bracket 91 and can make the second slot 921 engage with the first pole 11, so as to reinforce the switch control device to the switch, and prevent any of the first drive assembly and the second drive assembly in the switch control device from rotating relative to the switch when working, resulting in the inability to effectively control the opening and closing of the switch.

[0087] The present invention also provides a control method for a relay protector, which is applied to the above-mentioned relay protector, and the control method comprises:

[0088] Receive entry or exit instructions,

[0089] If the instruction is an input instruction, the control module 5 controls the first driving assembly to drive the pressing plate assembly 3 to rotate to the first position, and after rotating to the first position, controls the second driving assembly to drive the second nut 22 to rotate to the third position;

[0090] If the instruction is an exit instruction, the control module 5 controls the second driving assembly to drive the second nut 22 to rotate to the fourth position, and after rotating to the fourth position, controls the first driving assembly to drive the pressure plate assembly 3 to rotate to the second position.

[0091] It can be understood that the control method of the relay protector provided by the present invention can accurately control the position of the protection pressure plate 31 in the relay protector, thereby controlling the opening and closing of the switch, thereby realizing the intelligence of the power equipment.

[0092] Furthermore, when the pressure plate assembly 3 is in the exit state, even if the control module 5 receives an exit instruction, the first drive assembly and the second drive assembly do not perform any action.

[0093] When the pressure plate assembly 3 is in the engaged state, even if the control module 5 receives an engaged instruction, the first drive assembly and the second drive assembly do not perform any action. Only when the control module 5 receives an exit instruction, the control module 5 controls the first drive assembly and the second drive assembly to exit.

[0094] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A switch control device, characterized in that: Used to control the opening and closing of a switch, the switch comprising a first pole (11), a second pole (21), a pressure plate assembly (3), and a second nut (22) screwed to the second pole (21); the first end of the pressure plate assembly (3) is rotatably connected to the first pole (11), the second end of the pressure plate assembly (3) is detachably in contact with the second pole (21), and the second nut (22) is used to press the second end against the second pole (21) or release the second end; The switch control device comprises: A first driving assembly is drivingly connected to the pressure plate assembly (3), the first driving assembly being used to drive the pressure plate assembly (3) to reciprocate between a first position in contact with the second pole (21) and a second position separated from the second pole (21); a second drive assembly, drivingly connected to the second nut (22), the second drive assembly being used to drive the second nut (22) to reciprocate between a third position for pressing the second end and a fourth position for releasing the second end; A control module (5) is communicatively connected to the first drive assembly and the second drive assembly, and is configured to receive an input instruction and an output instruction; When receiving an input instruction, the control module (5) controls the first drive component to drive the pressure plate component (3) to rotate toward the first position, and after rotating to the first position, controls the second drive component to drive the second nut (22) to rotate toward the third position; when receiving an exit instruction, the control module (5) controls the second drive component to drive the second nut (22) to rotate toward the fourth position, and after rotating to the fourth position, controls the first drive component to drive the pressure plate component (3) to rotate toward the second position.

2. The switch control device according to claim 1, characterized in that: The first driving assembly comprises a first driving member and a first transmission button (41) connected to the output end of the first driving member, the first transmission button (41) being engaged with the first end of the pressing plate assembly (3) and circumferentially limiting the pressing plate assembly (3); The first transmission button (41) drives the pressure plate assembly (3) to rotate under the drive of the first driving member.

3. The switch control device according to claim 2, characterized in that: The pressure plate assembly (3) comprises a first nut (12) and a protective pressure plate (31), wherein the first nut (12) is threadedly connected to the first pole (11), and the protective pressure plate (31) is rotatably sleeved on the first pole (11); The first transmission button (41) comprises a connecting sleeve (411) and a clamp (412) which are connected to each other, the connecting sleeve (411) is provided with a first receiving groove, the inner wall of the first receiving groove is provided with a first circumferential limiting structure (4111), the outer wall of the first nut (12) is provided with a second circumferential limiting structure (121), the first receiving groove is engaged with the first nut (12), the first circumferential limiting structure (4111) cooperates with the second circumferential limiting structure (121) to limit the connecting sleeve (411) from rotating circumferentially relative to the first nut (12); the clamp (412) is clamped on the protective pressure plate (31).

4. The switch control device according to claim 1, characterized in that: The second drive assembly comprises a second drive member and a second transmission button (42) connected to the output end of the second drive member, and the second transmission button (42) is engaged with the second nut (22) and is circumferentially limited; The second transmission button (42) drives the second nut (22) to rotate under the drive of the second driving member.

5. The switch control device according to claim 4, characterized in that: The second transmission button (42) is provided with a second receiving groove, the inner wall of the second receiving groove is provided with a third circumferential limiting structure (421), the outer wall of the second nut (22) is provided with a fourth circumferential limiting structure (221), the second receiving groove is engaged with the second nut (22), and the third circumferential limiting structure (421) cooperates with the fourth circumferential limiting structure (221) to limit the second transmission button (42) from rotating circumferentially relative to the second nut (22).

6. The switch control device according to any one of claims 1 to 5, characterized in that: The switch control device further comprises a trigger assembly (6) communicatively connected to the control module (5), a first paddle (7) drivingly connected to the output end of the first drive assembly, and a second paddle (8) drivingly connected to the output end of the second drive assembly, wherein the first paddle (7) is provided with a first protrusion (71) on its outer periphery, and the second paddle (8) is provided with a second protrusion (81) on its outer periphery; The trigger assembly (6) comprises a first trigger part (611), a second trigger part (621), a third trigger part (631) and a fourth trigger part (641); when the pressure plate assembly (3) is located at the first position, the first trigger part (611) is triggered by the first protrusion (71) or the first driving assembly; when the pressure plate assembly (3) is located at the second position, the second trigger part (621) is triggered by the first protrusion (71); when the second nut (22) is located at the third position, the third trigger part (631) is triggered by the second protrusion (81); when the second nut (22) is located at the fourth position, the fourth trigger part (641) is triggered by the second protrusion (81).

7. The switch control device according to claim 6, characterized in that: The trigger component (6) comprises a first limit switch (61), a second limit switch (62), a third limit switch (63) and a fourth limit switch (64) which are communicatively connected to the control module (5); The first limit switch (61) is provided with the first trigger part (611); the second limit switch (62) is provided with the second trigger part (621); the third limit switch (63) is provided with the third trigger part (631); and the fourth limit switch (64) is provided with the fourth trigger part (641).

8. The switch control device according to any one of claims 1 to 5, characterized in that: The switch control device further comprises a main bracket (91) and an auxiliary bracket (92) detachably connected to the main bracket (91); The shells of the first drive assembly and the second drive assembly are arranged on the main bracket (91); the main bracket (91) is provided with a first card slot (911); the auxiliary bracket (92) is provided with a second card slot (921) opposite to the first card slot (911); the first card slot (911) is engaged with one of the first pole (11) and the second pole (21); the second card slot (921) is engaged with the other of the first pole (11) and the second pole (21), so that the shell is clamped tightly to the switch.

9. A relay protector, characterized in that: The invention comprises a switch and a switch control device as claimed in any one of claims 1 to 8; the switch comprises a first pole (11), a second pole (21), a pressure plate assembly (3) and a second nut (22) screwed to the second pole (21); the first end of the pressure plate assembly (3) is rotatably connected to the first pole (11), the second end of the pressure plate assembly (3) is detachably in contact with the second pole (21), and the second nut (22) is used to press the second end against the second pole (21) or release the second end; the switch control device is transmission-connected to the pressure plate assembly (3) and the second nut (22).

10. A control method for a relay protection device, applied to the relay protection device according to claim 9, characterized in that: include: Receive entry or exit instructions, If the instruction is an input instruction, the control module (5) controls the first drive assembly to drive the pressure plate assembly (3) to rotate toward the first position, and after rotating to the first position, controls the second drive assembly to drive the second nut (22) to rotate toward the third position; If the instruction is an exit instruction, the control module (5) controls the second drive assembly to drive the second nut (22) to rotate to the fourth position, and after rotating to the fourth position, controls the first drive assembly to drive the pressure plate assembly (3) to rotate to the second position.

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