Switching control device, relay protector, and control method for relay protector

Abstract

This invention belongs to the field of relay protection technology and discloses a switch control device, a relay protector, and a control method for the relay protector. The switch control device, used to control the opening and closing of a switch, includes a first drive assembly, a second drive assembly, and a control module. The control module is communicatively connected to the first and second drive assemblies and is used to receive engagement and disengagement commands. After receiving an engagement command, the first drive assembly drives the pressure plate assembly to rotate to a first position to contact the second pole. Then, the second drive assembly drives the second nut to rotate to a third position to lock it. After receiving a disengagement command, the second drive assembly drives the second nut to rotate to a fourth position to release the pressure plate assembly. Then, the first drive assembly drives the pressure plate assembly to rotate to a second position to separate it from the second pole. This invention avoids manual rotation of the pressure plate assembly, improves switching efficiency, and can accurately determine the current state of the pressure plate assembly.

Description

Technical Field

[0001] This invention relates to the field of relay protection, and more particularly to a switch control device, a relay protector, and a control method for the relay protector. Background Technology

[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 existing relay protection devices, one end of the pressure plate assembly is located on the first electrode post and can rotate under the drive mechanism. When the pressure plate assembly does not need to rotate, it is fixed on the first electrode post. When the pressure plate assembly rotates, it switches between an engaged position and an disengaged position. In the engaged position, the other end of the pressure plate assembly rotates to the second electrode post and is tightened by a nut. In the disengaged position, the other end of the pressure plate assembly rotates to disengage from the second electrode post. In the prior art, the above operation is usually performed manually, which is inefficient and requires human judgment of the current status of the relay protection device, which is prone to misjudgment and is very dangerous.

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

[0005] The purpose of this invention is to provide a switch control device, a relay protector, and a control method for the relay protector, so as to solve the technical problems of unsafe and inefficient manual switching of existing switches, and the need for human eyes to judge the current state of the relay protector, which is prone to misjudgment. The invention aims to improve switching efficiency and accurately judge the current state of the pressure plate assembly.

[0006] Based on the above concept, the technical solution adopted by this invention is as follows:

[0007] In a first aspect, a switch control device is provided for controlling the opening and closing of a switch. The switch includes 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, and a second end of the pressure plate assembly is detachably in contact with the second pole. The second nut is used to press the second end against the second pole or release the second end.

[0008] The switch control device includes:

[0009] A first driving component is connected to the pressure plate assembly in a transmission manner. The first driving component is used to drive the pressure plate assembly to reciprocate between a first position in contact with the second pole post and a second position separated from the second pole post.

[0010] The second drive assembly is connected to the second nut via a transmission. The second drive assembly is used to drive the second nut to reciprocate between a third position where the second end is pressed and a fourth position where the second end is released.

[0011] The control module is communicatively connected to both the first drive component and the second drive component, and is configured to receive input and output commands.

[0012] When the control module receives an input command, it controls the first drive component to drive the pressure plate component to rotate towards the first position, and after rotating to the first position, it controls the second drive component to drive the second nut to rotate towards the third position; when the control module receives an exit command, it controls the second drive component to drive the second nut to rotate towards the fourth position, and after rotating to the fourth position, it controls the first drive component to drive the pressure plate component to rotate towards the second position.

[0013] Optionally, the first drive assembly includes a first drive member and a first transmission button connected to the output end of the first drive member, wherein the first transmission button engages with the first end of the pressure plate assembly and circumferentially limits the pressure plate assembly.

[0014] The first transmission knob drives the pressure 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, wherein the first nut is threadedly connected to the first pole post, and the protective pressure plate is rotatably sleeved on the first pole post;

[0016] The first transmission button includes a connecting sleeve and a clamp connected to each other. The connecting sleeve is provided with a first receiving groove. The inner wall of the first receiving 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 receiving groove is engaged with the first nut. The first circumferential limiting structure and the second circumferential limiting structure cooperate to restrict the connecting sleeve from rotating circumferentially relative to the first nut. The clamp is engaged with the protective pressure plate.

[0017] Optionally, the second drive assembly includes a second drive member and a second transmission knob connected to the output end of the second drive member, wherein the second transmission knob engages with the second nut and is circumferentially limited.

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

[0019] Optionally, the second transmission button is provided with a second receiving groove, the inner wall of the second receiving 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 receiving groove is engaged with the second nut, and the third circumferential limiting structure cooperates with the fourth circumferential limiting structure to restrict the second transmission button from rotating circumferentially relative to the second nut.

[0020] Optionally, the switch control device further includes a trigger component that is communicatively connected to the control module, a first paddle that is driveably connected to the output end of the first drive component, and a second paddle that is driveably connected to the output end of the second drive component. The outer periphery of the first paddle is provided with a first protrusion, and the outer periphery of the second paddle is provided with a second protrusion.

[0021] The triggering component has a first triggering part, a second triggering part, a third triggering part, and a fourth triggering part. When the pressure plate component is in the first position, the first triggering part is triggered by the first protrusion or the first driving component. When the pressure plate component is in the second position, the second triggering part is triggered by the first protrusion. When the second nut is in the third position, the third triggering part is triggered by the second protrusion. When the second nut is in the fourth position, the fourth triggering part is triggered by the second protrusion.

[0022] Optionally, the triggering component includes a first limit switch, a second limit switch, a third limit switch, and a fourth limit switch that are 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 includes a main support and an auxiliary support detachably connected to the main support;

[0025] The housings of the first drive assembly and the second drive assembly are disposed on the main bracket. The main bracket is provided with a first slot, and the auxiliary bracket is provided with a second slot opposite to the first slot. The first slot engages with one of the first pole post and the second pole post, and the second slot engages with the other of the first pole post and the second pole post, so that the housing is clamped to the switch.

[0026] Secondly, a relay protector is provided, including a switch and the aforementioned switch control device; the switch includes 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; the switch control device is kinetically connected to the pressure plate assembly and the second nut.

[0027] Thirdly, a control method for a relay protection device is provided, applied to the aforementioned relay protection device, comprising:

[0028] Receive input or output instructions.

[0029] If the instruction is an input instruction, the control module controls the first drive component to drive the pressure plate component to rotate to the first position, and after rotating to the first position, controls the second drive component 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 drive component to drive the second nut to rotate to the fourth position, and after rotating to the fourth position, controls the first drive component to drive the pressure plate component to rotate to the second position.

[0031] The beneficial effects of this invention are:

[0032] The switch control device provided by the present invention is driven by a first drive component connected to a pressure plate component, and a second drive component connected to a second nut. A control module is communicatively connected to the first and second drive components and is configured to receive input and output commands. The input and output of the switch are achieved by the control module controlling the first drive component to rotate the pressure plate component and the second drive component to rotate the second nut after receiving the command. This avoids manual rotation of the pressure plate component, improves switching efficiency, and the position rotation of the pressure plate component is predictable through the control module and drive components, allowing for accurate judgment of the current state of the pressure plate component.

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

[0034] The control method for relay protectors provided by this invention can accurately control the position of the protection pressure plate in the relay protector, thereby controlling the opening and closing of the switch and realizing the intelligentization of power equipment. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram showing the first nut in a first position and the second nut in a third position, provided in an embodiment of the present invention.

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

[0038] Figure 3 This is a schematic diagram of the structure of the second transmission knob provided in an embodiment of the present invention;

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

[0040] Figure 5 This is a schematic diagram of an embodiment of the present invention showing the first nut in a first position and the second nut in a fourth position.

[0041] Figure 6 This is a schematic diagram of an embodiment of the present invention showing the first nut in the second position and the second nut in the fourth position.

[0042] Figure 7 This is a schematic diagram of the main support structure provided in an embodiment of the present invention;

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

[0044] In the picture:

[0045] 11. First pole post; 12. First nut; 121. Second circumferential limiting structure;

[0046] 21. Second pole post; 22. Second nut; 221. Fourth circumferential limiting structure;

[0047] 3. Pressure plate assembly; 31. Protective pressure plate;

[0048] 41. First transmission knob; 411. Connecting sleeve; 4111. First circumferential limiting structure; 412. Clamp; 42. Second transmission knob; 421. Third circumferential limiting structure;

[0049] 5. Control module;

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

[0051] 611, First triggering part; 621, Second triggering part; 631, Third triggering part; 641, Fourth triggering part;

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

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

[0054] 91. Main bracket; 911. First slot; 92. Auxiliary bracket; 921. Second slot. Detailed Implementation

[0055] 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 will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. Furthermore, it should be noted that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, not all of them.

[0056] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0057] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0058] This invention discloses a relay protector that can quickly disconnect the faulty part when a power system fault occurs, so as 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, and the second end of the pressure plate assembly 3 is detachably in contact with the second pole 21; 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 drively connected to the pressure plate assembly 3 and the second nut 22.

[0060] It is understandable that the switch in the relay protection device is controlled by a switch control device. The second nut 22 presses the second end of the pressure plate assembly 3 against the second pole 21 to realize the conduction of the first pole 11 and the second pole 21. Alternatively, the second nut 22 releases the second end of the pressure plate assembly 3 to cut off the conduction of the first pole 11 and the second pole 21 that rely on the pressure plate assembly 3. The opening and closing of the switch can be controlled by the switch control device, avoiding manual control of the switch by personnel. This not only improves switching efficiency but also enhances safety.

[0061] like Figure 1 As shown, the switch control device disclosed in this invention includes a first drive assembly, a second drive assembly, and a control module 5. The first drive assembly is driven by a pressure plate assembly 3, and is used to drive the pressure plate assembly 3 to reciprocate between a first position contacting the second pole post 21 and a second position separating from the second pole post 21. The second drive assembly is driven by a second nut 22, and is used to drive the second nut 22 to reciprocate between a third position pressing the second end and a fourth position releasing the second end. The control module 5 is communicatively connected to both the first and second drive assemblies, and is configured to receive input and output commands. When the control module 5 receives an input command, it 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, it controls the second drive assembly to drive the second nut 22 to rotate to the third position; when the control module 5 receives an output command, it controls the second drive assembly to drive the second nut 22 to rotate to the fourth position, and after rotating to the fourth position, it 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 driven by a first drive component connected to a pressure plate assembly 3, and a second drive component connected to a second nut 22. The control module 5 is communicatively connected to the first drive component and the second drive component and is configured to receive input and output commands. The input and output of the switch are achieved by the control module 5 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 command. This avoids manual rotation of the pressure plate assembly 3, improves switching efficiency, and the position rotation of the pressure plate assembly 3 is predictable through the control module 5 and the drive component, which can accurately determine the current state of the pressure plate assembly 3.

[0063] Furthermore, 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 engages with the first end of the pressure plate assembly 3 and circumferentially limits the pressure plate assembly 3. Driven by the first driving member, the first transmission button 41 drives the pressure plate assembly 3 to rotate. 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 engages with the second nut 22 and circumferentially limits its rotation. Driven by the second driving member, the second transmission button 42 drives the second nut 22 to rotate.

[0064] Specifically, such as Figure 2 and Figure 3 As shown, in this embodiment, both the first and second driving components are geared motors. The output shaft of the geared motor has a D-shaped cross-section. A D-shaped hole is provided between the first transmission knob 41 and the second transmission knob 42, and they are connected to the output shaft through the D-shaped hole and thus driven by the geared motor. The geared motor consists of a small DC motor, a worm gear, and a multi-stage spur gear, which can convert high speed and low torque into low speed and high torque, facilitating the control of 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 post 11, and the protective pressure plate 31 is rotatably sleeved on the first pole post 11. The first transmission button 41 includes a connecting sleeve 411 and a clamp 412 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 engages with the first nut 12, and the first circumferential limiting structure 4111 cooperates with the second circumferential limiting structure 121 to restrict 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 adapted to the protective pressure plate 31.

[0066] Specifically, such as 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 on the first nut 12 that mates with the groove. When the first receiving groove is sleeved on the first nut 12, the protrusion engages with the groove, and the clamp 412 is also engaged with 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, the protective pressure plate 31 held by the clamp 412 will not rotate relative to the first pole post 11, thereby reducing the steps of fixing the protective pressure plate 31 in the exit position.

[0067] For example, a plurality of grooves are provided circumferentially on the inner wall of the first receiving groove, and a plurality of protrusions are provided on the outer periphery of the first nut 12 that correspond to and engage with the grooves one by one.

[0068] In some other embodiments, the first nut 12 is a conventional hexagonal nut, and the first receiving groove only needs to engage with the two parallel side walls of the hexagonal nut to enable the protective pressure plate 31 and the first nut 12 to 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. The connecting sleeve 411 and the clamp 412 are engaged and can rotate synchronously under the drive of the first drive assembly.

[0070] Further, see Figure 3 The second transmission button 42 is provided with a second receiving groove, and 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 and the fourth circumferential limiting structure 221 cooperate to restrict the second transmission button 42 from rotating circumferentially relative to the second nut 22.

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

[0072] For example, a plurality of grooves are provided circumferentially on the inner wall of the second receiving groove, and a plurality of protrusions are provided on the outer periphery of the second nut 22 that correspond to and engage with the grooves one by one.

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

[0074] Furthermore, the switch control device also includes a trigger assembly 6 communicatively connected to the control module 5, a first lever 7 driveably connected to the output end of the first drive assembly, and a second lever 8 driveably connected to the output end of the second drive assembly. The outer periphery of the first lever 7 has a first protrusion 71, and the outer periphery of the second lever 8 has a second protrusion 81. The trigger assembly 6 has 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 in the first position, the first trigger part 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 has moved to the first position. When the pressure plate assembly 3 is in the second position, the second trigger part 621 is triggered by the first protrusion 71, so that the control module 5 receives a signal that the pressure plate assembly 3 has moved to the second position. When the second nut 22 is in the third position, the third trigger part 631 is triggered by the second protrusion 81, so that the control module 5 receives a signal that the second nut 22 has moved to the third position. When the second nut 22 is in the fourth position, the second protrusion 81 triggers the fourth trigger part 641, so that the control module 5 receives the signal that the second nut 22 has moved to the fourth position.

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

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

[0077] Furthermore, in this embodiment, the triggering component 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 triggering part 611; the second limit switch 62 is provided with a second triggering part 621; the third limit switch 63 is provided with a third triggering part 631; and the fourth limit switch 64 is provided with a fourth triggering part 641.

[0078] Taking the first trigger part 611 being triggered by the side wall of the clamp 412 as an example, only one first protrusion 71 can be set on the first lever 7. Of course, multiple first protrusions 71 can also be set.

[0079] When the switch is in the ON state, such as Figure 1 As shown, the first nut 12 and the protective pressure plate 31 of the pressure plate assembly 3 are both in the first position, and the first trigger part 611 is triggered by the clamp 412 locked on the protective pressure plate 31, so that the first limit switch 61 is in the closed state. The second nut 22 triggers the third trigger part 631 through the second protrusion 81 of the second lever 8 coaxial with it, so that the third limit switch 63 is in the closed state. 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.

[0080] When the control module 5 receives an exit command, it controls the second drive component to drive the second transmission knob 42 and the coaxial second paddle 8 to rotate. The second protrusion 81 on the second paddle 8 triggers the fourth trigger part 641. At this time, as... Figure 5 As shown, the fourth limit switch 64 changes from the open state to the closed state, the second nut 22 is in 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 has moved to the fourth position, the control module 5 closes the second drive component and opens the first drive component, driving the first transmission knob 41 and the first paddle 7 coaxial with it to rotate until the first protrusion 71 of the first paddle 7 triggers the second trigger part 621. At this time, as... Figure 6 As shown, the second limit switch 62 also switches from the open state to the closed state, and the pressure plate assembly 3 rotates to the second position. Neither the first trigger part 611 nor the third trigger part 631 is triggered, and both the first limit switch 61 and the third limit switch 63 are in the open state. When the first protrusion 71 triggers the second trigger part 621, the second limit switch 62 changes from the open state to the closed state, sending a signal to the control module 5. The control module 5 then controls the first drive component to stop rotating, and the switch retracts to its original position.

[0081] In other words, when the switch is in the off 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 drive component to drive the first transmission knob 41 and the first paddle 7 to rotate. 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, if... Figure 5As shown, the first limit switch 61 changes from the open state to the closed state, indicating that the pressure plate assembly 3 has rotated to the first position, the first nut 12 is locked, and the second end of the pressure plate assembly 3 is in contact with the second pole post 21. After receiving the signal that the pressure plate assembly 3 has rotated to the first position, the control module 5 controls the second drive component to drive the second transmission knob 42 and the second lever 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 lever 8 triggers the third trigger part 631, the third limit switch 63 changes from the open state to the closed state, indicating that the second nut 22 has rotated to the third position, pressing the second end of the pressure plate assembly 3 against the second pole post 21, and the first pole post 11 and the second pole post 21 are connected. At this time, the state of the switch control device is as follows. Figure 1 As shown, neither the second triggering part 621 nor the fourth triggering part 641 is triggered, and both the second limit switch 62 and the fourth limit switch 64 are in the open state. When the second protrusion 81 triggers the third triggering part 631, the third limit switch 63 changes from the open state to the closed state, which can send a signal to the control module 5. In turn, the control module 5 controls the second driving member to stop rotating, and the switch is engaged.

[0083] For example, the second lever 8 has two second protrusions 81 distributed circumferentially, one of which is used to trigger the third limit switch 63 and the other is used to trigger the fourth limit switch 64. This can reduce the rotational stroke of the second lever 8 and improve the switching speed between the engaged and disengaged states. In other embodiments, only one second protrusion 81 may be provided.

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

[0085] Furthermore, the switch control device also 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 disposed on the main bracket 91. The main bracket 91 is provided with a first slot 911, and the auxiliary bracket 92 is provided with a second slot 921 opposite to the first slot 911. The first slot 911 engages with one of the first pole post 11 and the second pole post 21, and the second slot 921 engages with the other of the first pole post 11 and the second pole post 21, so that the housing is clamped to the switch.

[0086] Specifically, see Figure 5 and Figure 6In this embodiment, the first drive assembly and the second drive assembly are directly housed within the main bracket 91, with the output shaft of the geared motor exposed. This facilitates the engagement of the first transmission knob 41 with the first nut 12 and the second transmission knob 42 with the second nut 22. The main bracket 91 also has a first slot 911 below the second transmission knob 42, which engages with the second pole post 21. The auxiliary bracket 92 has a second slot 921 opposite to the first slot 911. The auxiliary bracket 92 is screwed to the main bracket 91, allowing the second slot 921 to engage with the first pole post 11. This secures the switch control device to the switch, preventing either the first drive assembly or the second drive assembly from rotating relative to the switch during operation, thus ensuring effective control of the switch's opening and closing.

[0087] The present invention also provides a control method for a relay protector, applied to the aforementioned relay protector, the control method comprising:

[0088] Receive input or output instructions.

[0089] If the instruction is an input instruction, the control module 5 controls the first drive component to drive the pressure plate component 3 to rotate to the first position, and after rotating to the first position, controls the second drive component 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 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.

[0091] It is understood that the control method for 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 and realizing the intelligentization of power equipment.

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

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

[0094] The above embodiments merely illustrate the basic principles and characteristics of the present invention. The present invention is not limited to the above embodiments. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A switch control device, characterized in that, The switch is used to control the opening and closing of the switch, which 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 against the second pole (21) or release the second end; The switch control device includes: The first driving component is connected to the pressure plate assembly (3) in a transmission manner. The first driving component is used to drive the pressure plate assembly (3) to reciprocate between a first position in contact with the second pole post (21) and a second position separated from the second pole post (21). The second drive assembly is connected to the second nut (22) in a transmission connection. The second drive assembly is used to drive the second nut (22) to reciprocate between the third position of pressing the second end and the fourth position of releasing the second end. The control module (5) is communicatively connected to both the first drive component and the second drive component, and is configured to receive input and output instructions; When the control module (5) receives the input command, it controls the first drive component to drive the pressure plate component (3) to rotate to the first position, and after rotating to the first position, it controls the second drive component to drive the second nut (22) to rotate to the third position; when the control module (5) receives the exit command, it controls the second drive component to drive the second nut (22) to rotate to the fourth position, and after rotating to the fourth position, it controls the first drive component to drive the pressure plate component (3) to rotate to the second position; The first drive assembly includes a first drive member and a first transmission button (41) connected to the output end of the first drive member. The first transmission button (41) engages with the first end of the pressure plate assembly (3) and circumferentially limits the pressure plate assembly (3). The pressure plate assembly (3) includes a first nut (12) and a protective pressure plate (31). The first nut (12) is threaded to the first pole post (11), and the protective pressure plate (31) is rotatably sleeved on the first pole post (11). The first transmission button (41) includes a connecting sleeve (411) and a clamp (412) 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) and the second circumferential limiting structure (121) cooperate to restrict the connecting sleeve (411) from rotating circumferentially relative to the first nut (12). The clamp (412) is engaged with the protective pressure plate (31). The clamp (412) is provided with a limiting slot adapted to the protective pressure plate (31). The connecting sleeve (411) and the clamp (412) are integrally formed, or 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 engaged. 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 disposed on the main bracket (91). The main bracket (91) is provided with a first slot (911), and the auxiliary bracket (92) is provided with a second slot (921) opposite to the first slot (911). The first slot (911) engages with one of the first pole post (11) and the second pole post (21), and the second slot (921) engages with the other of the first pole post (11) and the second pole post (21), so that the housing is clamped to the switch.

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

3. The switch control device according to claim 2, 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 restrict the second transmission button (42) from rotating circumferentially relative to the second nut (22).

4. The switch control device according to any one of claims 1-3, characterized in that, The switch control device further includes a trigger component (6) that is communicatively connected to the control module (5), a first paddle (7) that is driveably connected to the output end of the first drive component, and a second paddle (8) that is driveably connected to the output end of the second drive component. 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 triggering assembly (6) has a first triggering part (611), a second triggering part (621), a third triggering part (631) and a fourth triggering part (641). When the pressure plate assembly (3) is in the first position, the first triggering part (611) is triggered by the first protrusion (71) or the first driving assembly. When the pressure plate assembly (3) is in the second position, the second triggering part (621) is triggered by the first protrusion (71). When the second nut (22) is in the third position, the third triggering part (631) is triggered by the second protrusion (81). When the second nut (22) is in the fourth position, the fourth triggering part (641) is triggered by the second protrusion (81).

5. The switch control device according to claim 4, characterized in that, The triggering component (6) includes a first limit switch (61), a second limit switch (62), a third limit switch (63) and a fourth limit switch (64) that are 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).

6. A relay protection device, characterized in that, The device includes a switch and a switch control device as described in any one of claims 1-5; 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 against the second pole (21) or release the second end; the switch control device is drively connected to the pressure plate assembly (3) and the second nut (22).

7. A control method for a relay protector, applied to the relay protector as described in claim 6, characterized in that, include: Receive input or output 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 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; If the instruction is an exit instruction, the control module (5) controls the second drive component to drive the second nut (22) to rotate to the fourth position, and after rotating to the fourth position, controls the first drive component to drive the pressure plate component (3) to rotate to the second position.

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