Knife switch position detection device

Abstract

The application discloses a knife switch position detection device, the knife switch position detection device comprises a mounting seat, a connecting shaft assembly, a sensing piece and a detection assembly, the connecting shaft assembly comprises a connecting shaft and a mounting block, the connecting shaft comprises a connecting end and a sleeving end, the connecting end is fixedly connected with a rotating shaft, the mounting block is provided with a mounting hole, the mounting hole sleeves the sleeving end, and the sensing piece is arranged on the mounting hole. A first connecting part is arranged at the sleeving end, a second connecting part is arranged in the mounting hole, and a sensing piece is arranged on the mounting block; the mounting seat is provided with a containing groove, the mounting block is contained in the containing groove, the mounting seat is provided with a detection assembly, the detection assembly detects the sensing piece to detect the rotating position of the rotating shaft, the axial length of the first connecting part is smaller than the axial length of the sleeving end, and / or the axial length of the second connecting part is smaller than the axial length of the mounting hole. According to the technical scheme, a worker can complete installation and debugging of the induction piece on one side of the disconnecting link device, and the difficulty of installation and adjustment of the induction piece of the disconnecting link position detection device by the worker is reduced.

Description

Technical Field

[0001] This application relates to the technical field of knife switch devices, and particularly relates to a knife switch position detection device. Background Art

[0002] Due to advantages such as less space occupation, simple maintenance, and stable performance, knife switch devices are widely used in the power system. Since they are sealed devices, the internal mechanism in place cannot be directly observed from the outside, and the opening and closing states can only be indirectly reflected by external indicators and the indicator signals of the knife switch control box.

[0003] To improve safety, the power industry promotes the use of knife switch position detection devices to detect the rotating shaft of the knife switch device, so as to determine the opening and closing states of the knife switch device by detecting the position of the rotating shaft rotation.

[0004] In a substation, some knife switch devices need to be installed in positions with limited space. Part of the space at the top of the knife switch device will be blocked, or even all the space will be blocked. The available operating space for installing and fixing the knife switch position detection device is small, making it impossible to adjust the relative position relationship between the sensing element and the rotating shaft by disassembling and installing the sensing element, resulting in difficulties for workers to install and adjust the sensing element of the knife switch position detection device, and even impossible to complete the installation and adjustment operations. Summary of the Utility Model

[0005] The main purpose of this application is to provide a knife switch position detection device, aiming to improve the existing knife switch position detection device, where the available operating space for installation and fixing is small, resulting in difficulties for workers to install and debug the sensing element.

[0006] To achieve the above object, the knife switch position detection device proposed in this application includes a mounting base, a connecting shaft assembly, a sensing element, and a detection component; wherein,

[0007] The connecting shaft assembly includes a connecting shaft and a mounting block. The connecting shaft includes a connecting end and a sleeved end arranged oppositely. The connecting end is fixedly connected to the rotating shaft of the knife switch device. The mounting block is provided with a mounting hole, and the mounting hole is sleeved on the sleeved end. A first connecting portion is provided on the circumferential side of the sleeved end, and a second connecting portion is provided in the mounting hole to connect with the first connecting portion to limit the relative rotation between the mounting block and the connecting shaft. The sensing element is provided on the mounting block;

[0008] The mounting base is fixed on an outer surface of the knife switch device. The mounting base is provided with a receiving groove, and the mounting block is received in the receiving groove. The mounting base is also provided with the detection component to detect the sensing element through the detection component to detect the position of the rotating shaft rotation;

[0009] Wherein, the axial length of the first connecting portion is less than the axial length of the socket end, and / or, the axial length of the second connecting portion is less than the axial length of the mounting hole.

[0010] In some embodiments of the present application, a plurality of external racks are circumferentially and spacedly arranged on the circumferential side of the socket end, and the plurality of external racks form the first connecting portion. A plurality of internal racks are circumferentially and spacedly arranged on the inner wall of the mounting hole, and the plurality of internal racks form the second connecting portion. The plurality of external racks are engaged with the plurality of internal racks.

[0011] In some embodiments of the present application, a first sliding portion is provided on the side of the socket end away from the connecting end of the plurality of external racks, and the first sliding portion is spaced from the inner wall of the mounting hole.

[0012] In some embodiments of the present application, a second sliding portion is provided on the side of the mounting hole close to the connecting end of the plurality of internal racks, and the second sliding portion is spaced from the socket end.

[0013] In some embodiments of the present application, the mounting hole is a through hole. A stop ring is convexly provided on the circumferential side of the connecting shaft between the connecting end and the socket end, and the stop ring abuts against one side of the mounting block. The connecting shaft assembly further includes a top cover, the top cover is fixedly connected to the end surface of the connecting shaft away from the rotating shaft, and the top cover and the stop ring jointly limit the axial movement of the mounting block along the connecting shaft.

[0014] In some embodiments of the present application, a fixing member is fixedly connected to the circumferential side of the mounting seat to be fixed on the outer surface of the disconnecting switch device through the fixing member. The side of the fixing member away from the mounting seat extends along a direction parallel to the first outer edge of the outer surface and extends to the second outer edge of the outer surface, and the first outer edge and the second outer edge are adjacently arranged.

[0015] In some embodiments of the present application, the disconnecting switch position detection device further includes a wiring assembly. The wiring assembly includes a backing plate and a terminal. The backing plate is fixedly connected to the side of the fixing member away from the mounting seat and abuts against another outer surface of the disconnecting switch device. The terminal is installed on the side of the backing plate away from the disconnecting switch device and is electrically connected to the detection assembly through a wire.

[0016] In some embodiments of the present application, the mounting seat further has a mounting cavity, the mounting cavity is wound around the circumferential side of the receiving groove, and the detection assembly is installed in the mounting cavity.

[0017] In some embodiments of the present application, a long hole communicating with the installation cavity is further formed on the circumferential side of the mounting base. The long hole extends along the circumferential direction of the mounting base. The detection assembly includes a detection member, and the detection member is detachably mounted on the long hole through a screw structure.

[0018] In some embodiments of the present application, the sensing member rotates synchronously with the rotating shaft and has a closing position, a tripping position, and a grounding position;

[0019] The detection assembly includes a closing detection member, a tripping detection member, and a grounding detection member respectively mounted on the mounting base, and the closing detection member, the tripping detection member, and the grounding detection member respectively correspond to the closing position, the tripping position, and the grounding position one by one. The detection assembly detects the position of the rotation of the rotating shaft according to the detection information of the closing detection member, the tripping detection member, and the grounding detection member on the sensing member.

[0020] With the above technical solution of the present application, when the space at the top of the knife switch device is blocked and the sensing member needs to be debugged, the worker can disassemble the first connecting portion and the second connecting portion on one side of the knife switch device by using tools or bare hands, that is, move the mounting block along the axial direction of the connecting shaft so that the first connecting portion and the second connecting portion are separated. Since the mounting hole is sleeved on the socket end, the mounting block does not need to be completely separated from the connecting shaft, and the sensing member can be debugged by rotating the mounting block. After the debugging is completed, the first connecting portion and the second connecting portion are connected to limit the relative rotation between the mounting block and the connecting shaft, thereby completing the installation and debugging. It can be seen that in the technical solution of the present application, the mounting block is provided with a second connecting portion. When debugging the sensing member on the mounting block, only the first connecting portion and the second connecting portion need to be separated, and the mounting hole is still sleeved on the socket end. It is not necessary to axially separate the mounting block from the socket end, and the sensing member can be debugged by rotating the mounting block. In this way, the worker can complete the installation and debugging of the sensing member on one side of the knife switch device, reducing the difficulty of installation and adjustment of the sensing member of the knife switch position detection device for the worker. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0022] Figure 1 It is a schematic structural diagram of an embodiment of the knife switch position detection device of the present application;

[0023] Figure 2 isFigure 1 Another perspective of the middle knife switch position detection device;

[0024] Figure 3 For Figure 1 A cross-sectional view of the connecting shaft assembly in the middle;

[0025] Figure 4 For Figure 1 An exploded view of the connecting shaft assembly in the middle.

[0026] Explanation of the reference numerals in the drawings:

[0027] 10. Fixing member; 11. Fixing part; 20. Mounting base; 21. Accommodating groove; 22. Mounting cavity; 23. Long hole; 30. Connecting shaft assembly; 31. Connecting shaft; 311. Connecting end; 312. Stopping ring; 313. Socketing end; 314. External rack; 315. First sliding part; 32. Mounting block; 321. Mounting hole; 322. Internal rack; 33. Top cover; 40. Inductive member; 50. Detection member; 60. Wiring assembly; 61. Padding plate; 62. Wiring terminal; 201. Rotating shaft; 202. First outer edge; 203. Second outer edge.

[0028] The realization, functional features and advantages of the purpose of this application will be further described in conjunction with the embodiments with reference to the drawings. Specific embodiments

[0029] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0030] In this application, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] In addition, in this application, descriptions such as "first" and "second" are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. Additionally, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0032] The present utility model proposes a disconnector position detection device, which is applied to a disconnector device and used to detect the opening and closing state of the disconnector. It can be understood that the disconnector device here refers to GIS. The GIS disconnector is a conventional structure and will not be elaborated here one by one. The disconnector device includes a structure box and a rotating shaft 201. The rotating shaft 201 is arranged inside the structure box and is exposed on the outer surface of the disconnector device through a hole on the structure box. The rotating shaft 201 is used to output the movement during the opening and closing operation of the disconnector, and can convert the mechanical action into mechanical visual signals, sensor detection signals, etc. through the connecting shaft assembly 30.

[0033] Please refer to Figures 1 to 4 , in the embodiment of the present utility model, the disconnector position detection device includes a mounting seat 20, a connecting shaft assembly 30, a sensing member 40, and a detection assembly.

[0034] The connecting shaft assembly 30 includes a connecting shaft 31 and a mounting block 32. The connecting shaft 31 includes a connecting end 311 and a socket end 313 arranged oppositely. The connecting end 311 is fixedly connected to the rotating shaft 201 of the disconnector device. The mounting block 32 is provided with a mounting hole 321, and the mounting hole 321 is sleeved on the socket end 313. A first connecting portion is provided on the circumferential side of the socket end 313, and a second connecting portion for connecting with the first connecting portion to limit the relative rotation between the mounting block 32 and the connecting shaft 31 is provided in the mounting hole 321. The sensing member 40 is provided on the mounting block 32.

[0035] It should be noted that the disconnector device usually installs an indicator on the rotating shaft 201 to convert the mechanical action into a mechanical visual signal. For the disconnector position detection device proposed by the present utility model, the indicator can be removed, and the connecting end 311 can be fixedly connected to the original threaded hole for installing and fixing the indicating ball, so as to install and fix the connecting shaft 31. In this way, the installation of the connecting shaft 31 does not require additional processing on the rotating shaft 201. Of course, the connecting end 311 can also be fixed to the rotating shaft 201 by bonding, welding, etc.

[0036] It can be understood that in the connection mode between the mounting block 32 and the connecting shaft 31, the mounting hole 321 is sleeved on the socket end 313, and then the relative rotation between the mounting block 32 and the connecting shaft 31 is restricted by the connection between the first connecting portion and the second connecting portion. The connecting end 311 of the connecting shaft 31 is fixedly connected to the rotating shaft 201 of the knife switch device. Thus, the knife switch device can expose the movement state of the knife switch inside it to the outer surface of the structure box through the connecting shaft 31 and the rotating shaft 201. The socket end 313 of the connecting shaft 31 is connected with a mounting block 32, and an induction member 40 is arranged on the mounting block 32. In this way, when the knife switch of the knife switch device moves, the rotating shaft 201 can drive the connecting shaft 31 and the induction member 40 arranged on the connecting shaft 31 to rotate synchronously.

[0037] The mounting seat 20 is fixed on an outer surface of the knife switch device. The mounting seat 20 is provided with a receiving groove 21. The mounting block 32 is received in the receiving groove 21. The mounting seat 20 is further provided with a detection component to detect the induction member 40 through the detection component, so as to detect the position where the rotating shaft 201 rotates.

[0038] The mounting seat 20 plays a bearing role and is used to mount each component of the knife switch position detection device. The mounting seat 20 also plays a protective role. The mounting seat 20 can protect the components inside it to avoid interference. The notch of the receiving groove 21 on the mounting seat 20 faces the knife switch device. When the mounting seat 20 is mounted on the outer surface of the knife switch device, the induction member 40 enters the receiving groove 21 from the notch of the receiving groove 21.

[0039] There are various types of the detection component and the induction member 40. In one embodiment, the detection component can monitor the position where the induction member 40 is located in real time. In another embodiment, the detection component has a plurality of detection parts arranged at intervals. The detection component determines the position where the induction member 40 is located according to which detection part the induction member 40 is detected by.

[0040] The axial length of the first connecting portion is less than the axial length of the socket end 313, and / or the axial length of the second connecting portion is less than the axial length of the mounting hole 321. The axial length of the first connecting portion refers to the length of the first connecting portion in the axial direction of the connecting shaft 31. Similarly, the axial length of the connecting end 311 refers to the length of the connecting end 311 in the axial direction of the connecting shaft 31. Please refer to Figure 3 and Figure 4 , in the drawings of this embodiment, it can be seen that the axial direction of the connecting shaft 31 is placed vertically. That is, in this embodiment, the length of the first connecting portion in the vertical direction is less than the length of the socket end 313 in the vertical direction. Similarly, the axial length of the second connecting portion is less than the axial length of the mounting hole 321, which is similar to the above and will not be described one by one.

[0041] With the above technical solution of the present application, when the space at the top of the disconnecting switch device is blocked and the sensor 40 needs to be debugged, a worker can disassemble the first connecting portion and the second connecting portion on one side of the disconnecting switch device by using a tool or bare hands, that is, move the mounting block 32 along the axial direction of the connecting shaft 31 so that the first connecting portion and the second connecting portion are separated. Since the mounting hole 321 is sleeved on the socket end 313, the mounting block 32 does not need to be completely separated from the connecting shaft 31, and the sensor 40 can be debugged by rotating the mounting block 32. After the debugging is completed, the first connecting portion and the second connecting portion are connected to limit the relative rotation between the mounting block 32 and the connecting shaft 31, thereby completing the installation and debugging. It can be seen that in the technical solution of the present application, the mounting block 32 is provided with a second connecting portion. When debugging the sensor 40 on the mounting block 32, only the first connecting portion and the second connecting portion need to be separated, and the mounting hole 321 is still sleeved on the socket end 313. It is not necessary to axially separate the mounting block 32 from the socket end 313, and the sensor 40 can be debugged by rotating the mounting block 32. In this way, the worker can complete the installation and debugging of the sensor 40 on one side of the disconnecting switch device, reducing the difficulty of installation and adjustment of the sensor 40 of the disconnecting switch position detection device for the worker.

[0042] In some examples, such as Figure 3 and Figure 4 shown, a plurality of external racks 314 are circumferentially and spacedly arranged on the circumferential side of the socket end 313 along its circumferential direction. The plurality of external racks 314 form the first connecting portion, and a plurality of internal racks 322 are circumferentially and spacedly arranged on the inner wall of the mounting hole 321 along its circumferential direction. The plurality of internal racks 322 form the second connecting portion, and the plurality of external racks 314 are engaged with the plurality of internal racks 322.

[0043] This is set to further facilitate the disassembly and installation of the connecting shaft assembly 30, that is, to facilitate the mounting block 32 to be mounted or disassembled from the connecting shaft 31. In addition, the accuracy of the adjustment of the sensor 40 can be improved through the mutual engagement of the plurality of internal racks 322 and the plurality of external racks 314.

[0044] In some examples, such as Figure 3 and Figure 4 shown, the socket end 313 is provided with a first sliding portion 315 on the side away from the connecting end 311 of the plurality of external racks 314, and the first sliding portion 315 is spaced from the inner wall of the mounting hole 321.

[0045] This is set so that when the mounting block 32 is driven to move axially along the connecting shaft 31 in a direction away from the connecting shaft 31, the plurality of internal racks 322 are separated from the plurality of external racks 314, and the plurality of internal racks 322 are moved to the first sliding portion 315 and spaced from the first sliding portion 315, that is, the plurality of internal racks 322 are sleeved on the first sliding portion 315, thereby facilitating the rotation of the mounting block 32 relative to the connecting shaft 31.

[0046] In some examples, the mounting hole 321 is provided with a second sliding portion on one side of the plurality of inner racks 322 close to the connecting end 311 , and the second sliding portion is spaced apart from the sleeve end 313 .

[0047] In this arrangement, the driving mounting block 32 moves along the axial direction of the connecting shaft 31 in a direction away from the connecting shaft 31, the multiple inner racks 322 are separated from the multiple outer racks 314, and the multiple inner racks 322 are disengaged from the multiple outer racks 314 on the sleeve end 313, and the second sliding portion is sleeved on the multiple outer racks 314, thereby facilitating the mounting block 32 to rotate relative to the connecting shaft 31.

[0048] It is considered that when the mounting block 32 and the sensing member 40 rotate synchronously with the rotating shaft 201 , movement may occur, resulting in a reduction in the detection accuracy of the sensing member 40 by the detection assembly.

[0049] In some examples, such as Figure 3 and Figure 4 As shown, the mounting hole 321 is a through hole, and a stop ring 312 is protruding from the circumferential side of the connecting shaft 31 between the connecting end 311 and the sleeve end 313, and the stop ring 312 abuts against one side of the mounting block 32; the connecting shaft assembly 30 also includes a top cover 33, the top cover 33 is fixedly connected to an end face of the connecting shaft 31 away from the rotating shaft 201, and the top cover 33 and the stop ring 312 jointly limit the axial movement of the mounting block 32 along the connecting shaft 31.

[0050] Such arrangement aims to limit the axial movement of the mounting block 32 along the connecting shaft 31 by the joint action of the top cover 33 and the stop ring 312 on the mounting block 32, thereby avoiding movement of the mounting block 32 and the sensing element 40 when they rotate synchronously with the rotating shaft 201, thereby improving the detection accuracy of the detection component for the sensing element 40.

[0051] In some examples, a convex portion fixedly connected to the top cover 33 is convexly provided on the end surface of the connecting shaft 31 away from the rotating shaft 201, and the top cover 33 can be connected to the convex portion by plugging, threading, etc. In some other examples, a concave portion fixedly connected to the top cover 33 is concavely provided on the cross section of the connecting shaft 31 away from the rotating shaft 201.

[0052] In some examples, such as Figure 1 and Figure 2 As shown, the peripheral side of the mounting seat 20 is fixedly connected with a fixing member 10, so as to be fixed to the outer surface of the knife switch device through the fixing member 10. The mounting seat 20 and the knife switch device are fixedly connected through the fixing member 10, and there may not be a direct fixed connection relationship between the mounting seat 20 and the knife switch device.

[0053] It can be understood that in a substation, some disconnecting switch devices need to be installed in a narrow space, and part or even all of the space at the top of the disconnecting switch device will be blocked. In the disconnecting switch position detection device provided in this embodiment, a fixing member 10 is fixedly connected to the periphery of the mounting base 20 and is fixed to the outer surface of the disconnecting switch device through the fixing member 10. The fixing member 10 can be located at a position where the disconnecting switch device is not blocked, or it can extend to another outer surface of the disconnecting switch device.

[0054] Considering that a single fixing member 10 may not be able to fix the mounting base 20 well, in some examples, the number of fixing members 10 can be multiple. The multiple fixing members 10 are respectively arranged at intervals on the periphery of the mounting base 20, and the mounting base 20 is fixed to an outer surface of the disconnecting switch device through the multiple fixing members 10.

[0055] Specifically, in some examples, as Figures 1 to 2 shown, the side of the fixing member 10 away from the mounting base 20 extends along a direction parallel to the first outer edge 202 of the outer surface and extends to the second outer edge 203 of the outer surface. The first outer edge 202 and the second outer edge 203 are adjacent to each other.

[0056] It should be emphasized that this outer surface is the side surface exposed by the rotating shaft 201, and usually this outer surface is parallel to the horizontal plane. It can be understood that the direction parallel to the first outer edge 202 of the outer surface is defined as the first direction, and the direction parallel to the second outer edge 203 of the outer surface is defined as the second direction. Among them, the first direction and the second direction are perpendicular to each other on the horizontal plane, and the fixing member 10 and the mounting base 20 are arranged in the first direction.

[0057] Such a setting is aimed at further facilitating the operator to fix the mounting base 20 to the outer surface of the disconnecting switch device by using the fixing member 10. The side of the fixing member 10 away from the mounting base 20 extends to the second outer edge 203 of the outer surface. The operator can perform the fixing operation on the fixing member 10 on the other outer surface of the disconnecting switch device. Considering the application scenario of the disconnecting switch position detection device, the operator can stand on the side of the disconnecting switch device and use the fixing member 10 to fix the mounting base 20 to the upper surface of the disconnecting switch device. In addition, screw structures are usually provided at the side edges of the outer surface of the disconnecting switch device, and the fixing member 10 can be fixed by using these screw structures.

[0058] In some examples, as Figure 1 and Figure 2 shown, at least two spaced fixing portions 11 are provided on the side of the fixing member 10 away from the mounting base 20, and the fixing portions 11 are fixedly connected to the screw structures on the outer surface.

[0059] The fixing part 11 can be a threaded hole, and the screw structure on the outer surface can be threadedly connected and fixed to the threaded hole. The fixing part 11 can also be a clamping hole, and the screw structure on the outer surface can be clamped and fixed to the clamping hole.

[0060] With such a setting, it is intended to use the original structure of the knife switch device to fix the fixing member 10, so as to fix the mounting seat 20 through the fixing member 10, and there is no need to additionally machine a connecting part for fixing the fixing member 10 on the knife switch device.

[0061] Considering that the size of the structure box and the fixing member 10 may not be able to fit each other, the side of the fixing member 10 away from the mounting seat 20 also extends along the direction parallel to the second outer edge 203 of the outer surface, and the extended length has no specific limit. In some application scenarios, when the length of the side of the fixing member 10 away from the mounting seat 20 is greater than the length of the second outer edge 203, at this time, the fixing member 10 can be folded or cut to shorten its length, so that the fixing member 10 can be adapted to the position of the screw structure on the outer surface.

[0062] In some examples, such as Figure 1 and Figure 2 shown, the knife switch position detection device further includes a wiring assembly 60. The wiring assembly 60 includes a backing plate 61 and a wiring terminal 62. The backing plate 61 is fixedly connected to the side of the fixing member 10 away from the mounting seat 20 and abuts against the other outer surface of the knife switch device. The wiring terminal 62 is installed on the side of the backing plate 61 facing away from the knife switch device and is electrically connected to the detection assembly through a wire.

[0063] With such a setting, it is intended to facilitate the wiring of the knife switch position detection device. In addition, the backing plate 61 is fixedly connected to the fixing member 10, which can make the backing plate 61 and the fixing member 10 fit with the corner of the structure box, improving the stability of the knife switch position detection device installed on the knife switch device.

[0064] In some examples, such as Figure 1 and Figure 2 shown, the mounting seat 20 is further provided with a mounting cavity 22. The mounting cavity 22 is wound around the periphery of the receiving groove 21, and the detection assembly is installed in the mounting cavity 22. With such a setting, when the mounting seat 20 is installed on the outer surface of the knife switch device, it can avoid the connecting shaft assembly 30 and the sensing member 40 from interfering with the parts inside the mounting cavity 22. In addition, the receiving groove 21 and the outer surface of the knife switch device can form a relatively sealed chamber.

[0065] In some examples, such as Figure 1 and Figure 2As shown in the figure, a long hole 23 communicating with the installation cavity 22 is also formed on the circumferential side of the mounting base 20. The long hole 23 extends along the circumferential direction of the mounting base 20. The detection component includes a detection piece 50, and the detection piece 50 is detachably installed in the long hole 23 through a screw structure. It should be noted that in this application, the number of the detection pieces 50 can be multiple, such as two, three, etc.

[0066] With such a setting, even if the mounting base 20 has been installed on the outer surface of the knife switch device and the operator cannot debug the detection piece 50 directly above the mounting base 20, the detection piece 50 can also be adjusted from the side with a screwdriver to accurately adjust the detection piece 50 according to the actual position of the knife switch on site, improving the detection accuracy of the detection component.

[0067] Considering that when adjusting the detection piece 50, it is usually necessary to observe the situation inside the installation cavity 22, and the mounting base 20 is usually provided with a transparent upper cover.

[0068] In some examples, such as Figure 1 and Figure 2 shown, the sensing piece 40 rotates synchronously with the rotating shaft 201 and has a closing position, a tripping position and a grounding position.

[0069] The detection component includes a closing detection piece, a tripping detection piece and a grounding detection piece respectively installed on the mounting base 20, and the closing detection piece, the tripping detection piece and the grounding detection piece respectively correspond to the closing position, the tripping position and the grounding position one by one. The detection component detects the rotation position of the rotating shaft 201 according to the detection information of the closing detection piece, the tripping detection piece and the grounding detection piece on the sensing piece 40.

[0070] With such a setting, not only can the closing state and the tripping state of the knife switch device be detected, but also the grounding state of the knife switch device can be detected, improving the reliability of the knife switch detection device.

[0071] Please combine the above content. The closing detection piece, the tripping detection piece and the grounding detection piece can be debugged independently of each other.

[0072] In some embodiments, the sensing piece 40 is a magnetic steel, and the closing detection piece, the tripping detection piece and the grounding detection piece are sensors for detecting the magnetic steel. The types of the sensors include but are not limited to reed switches and Hall elements.

[0073] In the detection principle of the knife switch position detection device for the knife switch device, the knife switch drives the connecting shaft 31 and the sensing member 40 installed on the connecting shaft 31 to rotate through the rotating shaft 201. When the knife switch is in the closed state, the sensing member 40 is located at the closing position, and at the same time, the closing detector corresponding to the closing position can detect the sensing member 40, thereby sending out a closing detection signal; when the knife switch is in the open state, the sensing member 40 is located at the opening position, and at the same time, the opening detector corresponding to the opening position can detect the sensing member 40, thereby sending out an opening detection signal; when the knife switch is in the grounded state, the sensing member 40 is located at the grounding position, and at the same time, the grounding detector corresponding to the grounding position can detect the sensing member 40, thereby sending out a grounding detection signal.

[0074] It can be understood that if two or more detection members 50 all detect the sensing member 40, or all the detection members 50 do not detect the sensing member 40, it can be determined that the knife switch is in an abnormal state, and the knife switch position detection device can feedback the abnormal information to the background. With such a setting, the accuracy of the knife switch position detection device can be improved.

[0075] The above are only optional embodiments of the present application, and do not limit the patent scope of the present application accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present application under the inventive concept of the present application, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A knife switch position detection device, applied to a knife switch device, characterized in that: The knife switch position detection device comprises a mounting seat, a connecting shaft assembly, a sensing element and a detection assembly; wherein, The connecting shaft assembly comprises a connecting shaft and a mounting block, the connecting shaft comprises a connecting end and a sleeve end which are arranged opposite to each other, the connecting end is fixedly connected to the rotating shaft of the knife switch device, the mounting block is provided with a mounting hole, the mounting hole is sleeved on the sleeve end, a first connecting portion is provided on the peripheral side of the sleeve end, a second connecting portion which is connected to the first connecting portion to limit the relative rotation between the mounting block and the connecting shaft is provided in the mounting hole, and a sensing member is provided on the mounting block; The mounting seat is fixed to an outer surface of the knife switch device, the mounting seat is provided with a receiving groove, the mounting block is received in the receiving groove, and the mounting seat is also provided with the detection component, so as to detect the position of the rotation of the rotating shaft by detecting the sensing element through the detection component; Wherein, the axial length of the first connecting portion is smaller than the axial length of the sleeve end, and / or the axial length of the second connecting portion is smaller than the axial length of the mounting hole.

2. The knife switch position detection device according to claim 1, characterized in that: A plurality of external racks are arranged at intervals along the circumference of the sleeve end, and the plurality of external racks form the first connection portion. A plurality of internal racks are arranged at intervals along the circumference of the inner wall of the mounting hole, and the plurality of internal racks form the second connection portion. The plurality of external racks are meshed with the plurality of internal racks.

3. The knife switch position detection device according to claim 2, characterized in that: The sleeve end is provided with a first sliding portion on a side of the plurality of external racks away from the connection end, and the first sliding portion is spaced apart from the inner wall of the mounting hole.

4. The knife switch position detection device according to claim 2, characterized in that: The mounting hole is provided with a second sliding portion on one side of the plurality of inner toothed racks close to the connection end, and the second sliding portion is spaced apart from the sleeve end.

5. The knife switch position detection device according to claim 3, characterized in that: The mounting hole is a through hole, and a stop ring is protruding on the circumferential side of the connecting shaft between the connecting end and the sleeve end, and the stop ring abuts against one side of the mounting block; the connecting shaft assembly also includes a top cover, and the top cover is fixedly connected to an end surface of the connecting shaft away from the rotating shaft, and the top cover and the stop ring jointly limit the axial movement of the mounting block along the connecting shaft.

6. The knife switch position detection device according to claim 1, characterized in that: A fixing part is fixedly connected to the circumferential side of the mounting seat so as to be fixed to the outer surface of the knife gate device through the fixing part. The fixing part extends away from the side of the mounting seat in a direction parallel to the first outer edge of the outer surface and extends to the second outer edge of the outer surface. The first outer edge is adjacent to the second outer edge.

7. The knife switch position detection device according to claim 6, characterized in that: The knife switch position detection device also includes a wiring assembly, which includes a pad and a wiring terminal. The pad is fixedly connected to the side of the fixing member away from the mounting seat and abuts against the other outer surface of the knife switch device. The wiring terminal is installed on the side of the pad away from the knife switch device and is electrically connected to the detection assembly through a wire.

8. The switch position detection device according to claim 1, characterized in that: The mounting seat is further provided with a mounting cavity, which is arranged around the circumference of the accommodating groove, and the detection component is installed in the mounting cavity.

9. The knife switch position detection device according to claim 8, characterized in that: The peripheral side of the mounting seat is also provided with an elongated hole connected with the mounting cavity, and the elongated hole is extended along the circumference of the mounting seat. The detection assembly includes a detection member, and the detection member is detachably mounted on the elongated hole by a screw structure.

10. The knife switch position detection device according to claim 1, characterized in that: The induction element rotates synchronously with the rotating shaft and has a closing position, an opening position and a grounding position; The detection component includes a closing detection component, an opening detection component and a grounding detection component respectively installed on the mounting seat, and the closing detection component, the opening detection component and the grounding detection component correspond to the closing position, the opening position and the grounding position respectively. The detection component detects the rotation position of the rotating shaft according to the detection information of the induction component by the closing detection component, the opening detection component and the grounding detection component.

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