Magnetic induction device for detecting the state of pole switches

Abstract

The present invention discloses a magnetic induction device for detecting the status of a pole switch, comprising: a fixing module for fixing the position of the magnetic induction device on the pole switch, the fixing module including a locking plate, a fixing plate, and an adapter plate connected in sequence; an indicator rotation module that rotates with the indicator of the pole switch and is equipped with a magnetic steel; and a magnetic induction module fixed to the adapter plate and equipped with a magnetic induction sensor for detecting the position signal of the indicator rotation module. The present invention uses the magnetic induction between the magnetic steel and the magnetic induction sensor to collect the on / off position of the pole switch online in real time, and realizes remote status monitoring of the pole switch through signal transmission, thereby reducing the manpower and materials required for on-site inspection by workers.

Description

[Technical field]

[0001] The present invention relates to the technical field of detection of electric power equipment, and in particular to a magnetic induction device for detecting the state of a pole switch. [Background technology]

[0002] Pole switches are generally used in the connections, sections and branches of power distribution circuits, facilitating the operation and maintenance of circuits, and improving the reliability of power supply in the power grid. Some operational pole switches have an early start time and do not have two remote functions, which means that the current requirements for smart and efficient operation and maintenance of power distribution circuits cannot be met. Currently, the status of such pole switches is mainly judged by workers with the naked eye, which has low accuracy.

[0003] The Chinese patent document "Field detection device for FTU and pole switch", the publication number of which is CN112904195A and the publication date is 2021-06-04, discloses that the terminal block and the storage battery are provided inside the main box, the display operation panel is provided with a digital display pilot lamp, the digital display pilot lamp is connected to a current transformer in the internal wiring, the digital display pilot lamp is connected to a node corresponding to the terminal block, the aviation plug interface is provided on both sides of the main box, and is electrically connected to the pole switch and the FTU respectively through the aviation plug transfer line, and the circuit box is detachably provided inside the main box to realize the accommodation of the aviation plug transfer line. In this application, by installing the digital display pilot lamp, the detection device does not change the traditional wiring method between the FTU and the pole switch, and realizes the intuitive display of the operating status information of the FTU and the pole switch on the panel through the transfer of the detection device, so that the operator can complete the detection work without carrying a large number of detection devices, greatly improving the work efficiency, and the detection device integrates the necessary detectors, instruments, etc., and is easy to use. However, this technique still requires workers to periodically inspect the site, which is labor-intensive and has low timeliness. Summary of the Invention [Problem to be solved by the invention]

[0004] In order to solve the problem in the prior art that a large amount of manpower is required for workers to determine the status of a pole switch on-site or for workers to inspect it regularly, the present invention provides a magnetic induction device for detecting the status of a pole switch, and collects the on and off positions of the pole switch online in real time through the action of magnetic induction between magnetic steel and a magnetic induction sensor, and realizes remote status monitoring of the pole switch through signal transmission, thereby reducing the manpower and materials required for workers to inspect the site. [Means for solving the problem]

[0005] To achieve the above objectives, the present invention uses the following technical solutions: A magnetic induction device for detecting the state of a pole switch, comprising: A fixing module is used for fixing the position of the magnetic induction device on the pole switch, the fixing module including a locking plate, a fixing plate and an adapter plate connected in sequence; an indicator rotation module that rotates with the indicator of the pole switch and has magnetic steel installed therein; and a magnetic induction module fixed to the adapter plate and having a magnetic induction sensor for detecting a position signal of the pointer rotation module.

[0006] In the present invention, the indicator rotation module is fixed to the indicator of the pole switch and rotates with the rotation of the indicator. When the indicator indicates the on state, the magnetic steel of the indicator rotation module rotates to a position corresponding to the on state. At this time, in the magnetic induction module, one magnetic induction sensor is installed at a position corresponding to the on state where the magnetic steel has rotated, and a on state signal is generated by mutual induction with the magnetic steel. Similarly, when the indicator indicates the off state, the magnetic steel of the indicator rotation module rotates to a position corresponding to the off state, and another magnetic induction sensor is installed in the magnetic induction module at a position corresponding to the off state where the magnetic steel has rotated, and a cut state signal is generated by mutual induction with the magnetic steel. Therefore, the magnetic induction sensor in the magnetic induction module can detect the state of the pole switch based on the difference in signals generated by induction with the magnetic steel, and remote monitoring can be realized by wirelessly transmitting the generated signal at the same time.

[0007] Preferably, the indicator rotation module includes a magnetic steel arm mounting plate, a stopper is fixed to one end of the magnetic steel arm mounting plate, a magnetic steel arm is fixed to the other end, magnetic steel is installed inside the magnetic steel arm, and the stopper is fixed to the indicator of the pole switch.

[0008] In the present invention, the indicator of the pole-mounted switch rotates around a fixed axis, the stopper of the indicator rotation module is engaged with and fixed to the indicator, and one end of the magnetic steel arm mounting plate is fixedly connected to the stopper, so that the entire indicator rotation module and the indicator rotate around the same fixed axis, the magnetic steel arm mounting plate is a sheet metal product with two folds, and a magnetic steel arm is fixed to the other end of the magnetic steel arm mounting plate, so that the magnetic steel and the indicator fixed by the magnetic steel arm are located in two opposite directions of the fixed axis, and the magnetic steel, the fixed axis and the indicator are on the same straight line, so that the position of the magnetic steel indicates the pointing direction of the indicator, and thereby indicates the state of the pole-mounted switch.

[0009] Preferably, the magnetic induction module includes a sensor fixing plate, the sensor fixing plate is fixed inside a mounting box cavity body composed of a mounting box body and a box lid, two magnetic induction sensors are fixed to the sensor fixing plate, a metal hose joint is installed on one side of the mounting box body, and the metal hose joint is used for wiring the magnetic induction sensors.

[0010] In the present invention, the mounting box body and the box cover form a sealed cavity, a sensor fixing plate is fixed inside, and one magnetic induction sensor is symmetrically installed on the left and right sides of the sensor fixing plate in the longitudinal direction. The positions of the magnetic induction sensors on the sensor fixing plate can be fine-tuned, so that one sensor corresponds to the position of the magnetic steel in the on state and the other sensor corresponds to the position of the magnetic steel in the off state. The signal output cords of the two sensors are pulled out through a metal hose joint. A connecting terminal may also be installed inside the cavity, with one end of the connecting terminal connected to the sensor and the other end connected to an insulated flame-retardant shielded cable which is pulled out from the metal hose joint, thereby achieving the purpose of sealing and convenient wiring.

[0011] Preferably, the opening edge of the mounting box body is provided with an edge protrusion, the opening side of the box cover is provided with a groove that matches the shape of the edge protrusion, and a gasket is installed between the mounting box body and the box cover. In the present invention, the mounting box body and the box cover are provided with the corresponding edge protrusion and groove, which can enhance the fixed connection effect and improve the sealing of the cavity, and the gasket installed between the mounting box body and the box cover can further improve the sealing of the cavity.

[0012] Preferably, the locking plate includes a locking plate horizontal portion and a locking plate vertical portion connected to both ends of the locking plate horizontal portion, a locking plate protrusion connected to the locking plate horizontal portion is installed between the two locking plate vertical portions, a connection bump corresponding to one of the locking plate vertical portions is installed at each end of the fixing plate, a fixing protrusion is installed between the two connection bumps, and two adapter bumps are installed on the fixing plate.

[0013] In the present invention, the pole switch has an open / close indication plate, and there is a certain gap between the indication plate and the pole switch body, and the locking plate protrusion installed on the locking plate can be locked into the gap at the upper end of the open / close indication plate, and the fixing protrusion installed on the fixing plate can be locked into the gap at the lower end of the open / close indication plate, so that the locking plate is locked to the upper end of the open / close indication plate and the fixing plate is locked to the lower end of the open / close indication plate, and at the same time, the vertical part of the locking plate and the connecting bump are both provided with screw holes, and the vertical part of the locking plate and the corresponding connecting bump are fixedly connected through screws, thereby fixing the locking plate and the fixing plate to the open / close indication plate.

[0014] Preferably, the adapter plate includes an adapter plate horizontal portion and an adapter plate vertical portion connected to both ends of the adapter plate horizontal portion, the adapter plate vertical portion is connected correspondingly to the adapter bump on the fixed plate, and the adapter plate horizontal portion is fixedly connected to the mounting box body of the magnetic induction module.

[0015] In the present invention, the adapter plate vertical part of the adapter plate and the adapter bump on the fixed plate are both provided with corresponding screw holes, and the adapter plate can be fixedly connected to the fixed plate through screws. The mounting box body is fixed to the adapter plate horizontal part, so that the fixed axis on which the indicator rotates is in the area surrounded by the fixed plate and the adapter plate, and at the same time, the mounting box body is located below the fixed axis, and at the same time, the horizontal height range on which the magnetic steel in the indicator rotation module rotates is within the upper and lower limit ranges of the horizontal height of the mounting box body. Effect of the Invention

[0016] The present invention has the following advantageous effects: By using the magnetic induction between the magnetic steel fixed to the indicator and the magnetic induction sensor, the on / off position of the pole switch is collected online in real time in a non-contact manner, and the remote status monitoring of the pole switch is realized by signal transmission, reducing the manpower and material required for workers to inspect the site, and the entire device can be attached to the pole switch in an accessory manner, without the need to modify or destroy conventional equipment. [Brief description of the drawings]

[0017] [Figure 1] FIG. 2 is a diagram showing a pole switch according to an embodiment of the present invention. [Diagram 2] FIG. 2 is an exploded view of a magnetic induction device according to an embodiment of the present invention. [Diagram 3] 1 is a front view of a magnetic guidance device according to an embodiment of the present invention. [Figure 4] 1 is a front cross-sectional view of a magnetic induction device according to an embodiment of the present invention. [Diagram 5] 1 is a side cross-sectional view of a magnetic induction device according to an embodiment of the present invention. [Figure 6] FIG. 2 is an exploded view of a magnetic induction module according to an embodiment of the present invention. [Figure 7] 1 is a diagram showing a state in which a magnetic induction device according to an embodiment of the present invention is attached to a pole switch and used; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] The present invention will be further described below in conjunction with the drawings and embodiments.

[0019] 1 shows a conventional pole switch 2000, in which an open / close indicator plate 2010 is fixed to the surface of the pole switch, including an open / close indicator plate upper end surface 2012 and an open / close indicator plate lower end surface 2013, there is an open / close indicator plate gap 2011 between the open / close indicator plate and the pole switch, an indicator needle 2020 is installed below the open / close indicator plate, and the fixed axis around which the indicator needle rotates is located on the extension line of the center line of the open / close indicator plate. In the present invention, the locking plate 1110 and the fixing plate 1120 inside the fixing module are fixed to the open / close indicator plate, As shown in Figures 2 to 6, the magnetic induction device for detecting the state of a pole-mounted switch includes a fixing module which is used to fix the position of the magnetic induction device on the pole-mounted switch and includes a locking plate 1110, a fixing plate 1120 and an adapter plate 1130 connected in sequence, an indicator rotation module which rotates with the indicator of the pole-mounted switch and in which magnetic steel 1340 is installed, and a magnetic induction module which is fixed to the adapter plate 1130 and in which a magnetic induction sensor 1230 for detecting the position signal of the indicator rotation module is installed.

[0020] The indicator rotation module includes a magnetic steel arm mounting plate 1320, which is a sheet metal product with two bends, one end of which is a ring plate 1321 and the other end of which is a straight plate 1322, the ring plate and the straight plate are both vertical, the ring plate is fixedly connected to the stopper 1310, both of which are provided with screw holes and connected by screws, the circular hole in the center of the ring plate and the circular hole in the center of the stopper are concentric and are installed coaxially with the fixed axis around which the indicator 2020 rotates. A magnetic steel arm 1330 is fixed to the straight plate, which is fixed to the side of the straight plate facing the magnetic induction module and is also connected by screws and screw holes, the inside of the magnetic steel arm 1330 is provided with a groove for placing the magnetic steel to fix the magnetic steel 1340, and the stopper 1310 is engaged and connected to the indicator of the pole switch.

[0021] As shown in FIG. 6, the magnetic induction module includes a sensor fixing plate 1240, which is fixed inside the mounting box cavity body 1271, which is composed of the mounting box body 1270 and the box cover 1210. Several connection stoppers are installed at the bottom of the mounting box cavity body, and the sensor fixing plate is connected to the connection stoppers through screws and screw holes. The mounting box cavity body is divided into two layers, upper and lower. A groove is installed at the middle position of the sensor fixing plate. The shape of the groove matches the shape of the connection terminal 1260, thereby fixing the connection terminal to the lower layer of the mounting box cavity body, and a part of the connection terminal protrudes higher than the plane of the sensor fixing plate. On both sides of the groove of the sensor fixing plate, one fixing groove 1241 is installed symmetrically on the left and right, one magnetic induction sensor is installed above the left fixing groove, one fixing block is installed below the left fixing groove, the sensor is fixed to the sensor fixing plate by connecting the fixing block and the magnetic induction sensor 1230 with a screw, another magnetic induction sensor is fixed in the same way to the right fixing groove, the sensor position can be fine-tuned by moving the sensor left and right along the direction of the fixing groove. One side of the mounting box body 1270 is the mounting box through-hole end 1273, where a metal hose joint 1280 is installed, the signal lines of the two magnetic induction sensors are connected to the connection terminals, the connection terminals are further pulled out from the metal hose joint by a cable and connected to the corresponding wireless transmission module to transmit the signal remotely.

[0022] An edge protrusion 1273 is provided on the opening edge of the mounting box body 1270, and a groove matching the shape of the edge protrusion 1273 is provided on the side of the box lid 1210 facing the opening. A gasket 1220 is installed between the mounting box body 1270 and the box lid 1210 to seal the cavity, and the gasket may be a silicone pad.

[0023] The locking plate 1110 includes a locking plate horizontal portion 1111 and a locking plate vertical portion 1112 connected to both ends of the locking plate horizontal portion 1111. Between the two locking plate vertical portions 1112 is installed a locking plate protrusion connected to the locking plate horizontal portion. The thickness of the locking plate protrusion matches the gap of the opening / closing instruction plate. The thickness of the locking plate vertical portion is greater than that of the locking plate horizontal portion. A screw hole is installed on the bottom side of the locking plate vertical portion. A connection bump 1121 corresponding to one of the locking plate vertical portions 1112 is provided on each end of the fixed plate 1120, and a screw thread through hole corresponding to the screw hole of the locking plate vertical portion is provided on the connection bump, so that the fixed plate and the locking plate can be connected via a screw. A fixing protrusion 1123 is provided between the two connection bumps 1121, and the thickness of the fixing protrusion matches the gap of the opening / closing indication plate. Two adapter bumps 1122 are provided on the fixed plate 1120, and the adapter bump and the fixing protrusion are on opposite sides of the fixed plate, and a screw hole is provided horizontally on the adapter bump.

[0024] The adapter plate 1130 includes an adapter plate horizontal part 1132 and an adapter plate vertical part 1131 connected to both ends of the adapter plate horizontal part 1132, and the adapter plate vertical part 1131 is provided with screw holes which are connected to corresponding adapter bumps 1122 on the fixing plate 1120 via screws to fix the adapter plate to the fixing plate, and the adapter plate horizontal part 1132 is located below the adapter plate vertical part, and is fixedly connected to the mounting box body 1270 of the magnetic induction module.

[0025] In the present invention, the indicator rotation module is fixed to the indicator of the pole switch and rotates with the rotation of the indicator. When the indicator indicates the on state, the magnetic steel of the indicator rotation module rotates to a position corresponding to the on state. At this time, in the magnetic induction module, one magnetic induction sensor is installed at a position corresponding to the on state where the magnetic steel has rotated, and a on state signal is generated by mutual induction with the magnetic steel. Similarly, when the indicator indicates the off state, the magnetic steel of the indicator rotation module rotates to a position corresponding to the off state, and another magnetic induction sensor is installed in the magnetic induction module at a position corresponding to the off state where the magnetic steel has rotated, and a cut state signal is generated by mutual induction with the magnetic steel. Therefore, the magnetic induction sensor in the magnetic induction module can detect the state of the pole switch based on the difference in signals generated by induction with the magnetic steel, and remote monitoring can be realized by wirelessly transmitting the generated signal at the same time.

[0026] In the present invention, the pointer of the pole switch rotates around a fixed axis, the stopper of the pointer rotation module is engaged and fixed with the pointer, one end of the magnetic steel arm mounting plate is fixedly connected to the stopper, so that the whole pointer rotation module and the pointer rotate around the same fixed axis, the magnetic steel arm mounting plate is a sheet metal product with two bends, and the magnetic steel arm is fixed to the other end of the magnetic steel arm mounting plate, so that the magnetic steel and the pointer fixed by the magnetic steel arm are located in two opposite directions of the fixed axis, and the magnetic steel, the fixed axis and the pointer are on the same straight line, so that the position of the magnetic steel indicates the pointing direction of the pointer, thereby indicating the state of the pole switch. The stopper is customized according to the pointer and needs to be engaged with the pointer accurately to prevent the pointer from being deflected when it rotates.

[0027] In the present invention, the mounting box body and the box cover form a sealed cavity, a sensor fixing plate is fixed inside, and one magnetic induction sensor is symmetrically installed on the left and right sides of the sensor fixing plate in the longitudinal direction. The positions of the magnetic induction sensors on the sensor fixing plate can be fine-tuned, so that one sensor corresponds to the position of the magnetic steel in the on state and the other sensor corresponds to the position of the magnetic steel in the off state. The signal output cords of the two sensors are pulled out through a metal hose joint. A connecting terminal may also be installed inside the cavity, with one end of the connecting terminal connected to the sensor and the other end connected to an insulated flame-retardant shielded cable which is pulled out from the metal hose joint, thereby achieving the purpose of sealing and convenient wiring.

[0028] In the present invention, the mounting box body and the box cover are provided with corresponding edge protrusions and grooves, which enhance the fixed connection effect and improve the sealing performance of the cavity, and the gasket installed between the mounting box body and the box cover can further improve the sealing performance of the cavity.

[0029] In the present invention, the pole switch has an open / close indication plate, and there is a certain gap between the indication plate and the pole switch body, and the locking plate protrusion installed on the locking plate can be locked into the gap at the upper end of the open / close indication plate, and the fixing protrusion installed on the fixing plate can be locked into the gap at the lower end of the open / close indication plate, so that the locking plate is locked to the upper end of the open / close indication plate and the fixing plate is locked to the lower end of the open / close indication plate, and at the same time, the vertical part of the locking plate and the connecting bump are both provided with screw holes, and the vertical part of the locking plate and the corresponding connecting bump are fixedly connected through screws, thereby fixing the locking plate and the fixing plate to the open / close indication plate.

[0030] In the present invention, the adapter plate vertical part of the adapter plate and the adapter bump on the fixed plate are both provided with corresponding screw holes, and the adapter plate can be fixedly connected to the fixed plate through screws. The mounting box body is fixed to the adapter plate horizontal part, so that the fixed axis on which the indicator rotates is in the area surrounded by the fixed plate and the adapter plate, and at the same time, the mounting box body is located below the fixed axis, and at the same time, the horizontal height range on which the magnetic steel in the indicator rotation module rotates is within the upper and lower limit ranges of the horizontal height of the mounting box body.

[0031] 3, 4 and 5 show the state after the magnetic induction device of the present invention is assembled, and FIG. 7 shows the state after the magnetic induction device is attached to the pole switch, in which the locking plate is locked to the upper end surface of the open / close indication plate, and the locking plate protrusion is inserted into the gap of the open / close indication plate located at the upper side, and the fixing plate is locked to the lower end surface of the open / close indication plate, and the fixing protrusion is inserted into the gap of the open / close indication plate located at the lower side. The locking plate and the fixing plate are connected with screws to fix the fixing module to the open / close indication plate, and then the magnetic induction module is fixed to the side of the adapter plate horizontal part away from the pole switch. After the installation is completed, the indicator is located between the fixing module and the indicator rotation module, and the stopper of the indicator rotation module is engaged and fixed with the indicator, so that the indicator rotation module rotates with the indicator. The ring plate of the magnetic steel arm mounting plate is connected to the stopper, and the side of the straight plate of the magnetic steel arm mounting plate facing the magnetic induction module is connected to the magnetic steel arm, so that there is a certain gap between the magnetic steel arm and the mounting box body, and the magnetic steel is installed inside the magnetic steel arm. The magnetic induction sensor is installed on the upper side of the mounting box cavity body closest to the magnetic steel arm, so that the magnetic induction sensor is more easily induced by the magnetic steel. At the same time, the signal output cord of the magnetic induction sensor is connected to one end of the connection terminal, and the other end of the connection terminal is pulled out from the metal hose joint after bundling the harness cable and connected to the external antenna of the power private network, so that the detected pole switch state signal is transmitted wirelessly to realize remote monitoring. The device of the present invention can be powered by a built-in storage battery or can be powered by connecting to an external solar energy power supply device.

[0032] The magnetic induction sensor can detect a change in a magnetic field, and when the magnetic induction sensor has a magnetic steel nearby, the magnetic induction sensor receives a signal. In the embodiment of the present invention, two magnetic induction sensors are installed, one is used to detect the cut-off state signal of the indicator and is a cut-off state sensor, and the other is used to detect the on-state signal of the indicator and is a on-state sensor. When the indicator indicates the cut-off state, the position of one of the magnetic induction sensors is adjusted and fixed based on the position of the magnetic steel so that the cut-off signal can be received, and when the indicator indicates the on-state, the position of the other magnetic induction sensor is adjusted and fixed based on the position of the magnetic steel so that the on-signal can be received. After the positions of the two magnetic induction sensors are fixed, when the indicator indicates the cut-off position of the open / close indicator plate, the indicator indicates the cut-off state, and the magnetic induction sensor that can receive the cut-off signal at this time outputs a cut-off signal with a signal, and when the indicator indicates the on-position of the open / close indicator plate, the indicator indicates the on-state, and the magnetic induction sensor that can receive the on-signal at this time outputs a on-signal with a signal. Therefore, when the cut-off state sensor has a signal, we can determine that the pole switch at this time is in the cut-off state, and when the cut-off state sensor has a signal, we can determine that the pole switch at this time is in the cut-off state.

[0033] The above examples are intended to further discuss and explain the present invention and to facilitate understanding, and are not intended to limit the present invention in any way. As long as they do not deviate from the spirit and principles of the present invention, any modifications, equivalent changes, improvements, etc., made should all be included within the protection scope of the present invention.

[0034] (Additional Note) (Appendix 1) A magnetic induction device for detecting the state of a pole switch, comprising: A fixing module is used to fix the position of the magnetic induction device on the pole switch, and includes a locking plate (1110), a fixing plate (1120) and an adapter plate (1130) connected in sequence; a pointer rotation module that rotates with the pointer of the pole switch and has a magnetic steel (1340) installed therein; a magnetic induction module fixed to the adapter plate (1130) and having a magnetic induction sensor (1230) for detecting a position signal of the pointer rotation module; 1. A magnetic induction device for detecting the state of a pole switch, comprising:

[0035] (Appendix 2) The pointer rotation module includes a magnetic steel arm mounting plate (1320), a stopper (1310) is fixed to one end of the magnetic steel arm mounting plate (1320), a magnetic steel arm (1330) is fixed to the other end, a magnetic steel (1340) is installed inside the magnetic steel arm (1330), and the stopper (1310) is fixed to the pointer of the pole switch. 2. A magnetic induction device for detecting the state of a pole switch as described in claim 1.

[0036] (Appendix 3) The magnetic induction module includes a sensor fixing plate (1240), which is fixed inside a mounting box cavity body (1271) composed of a mounting box body (1270) and a box cover (1210), two magnetic induction sensors (1230) are fixed to the sensor fixing plate (1240), and a metal hose joint (1280) is installed on one side of the mounting box body (1270), which is used for wiring the magnetic induction sensors (1230). 3. A magnetic induction device for detecting the state of a pole switch according to claim 1 or 2.

[0037] (Appendix 4) An edge protrusion (1273) is provided on the opening edge of the mounting box body (1270), a groove matching the shape of the edge protrusion (1273) is provided on the side of the box cover (1210) facing the opening, and a gasket (1220) is installed between the mounting box body (1270) and the box cover (1210). 4. A magnetic induction device for detecting the state of a pole switch as described in claim 3.

[0038] (Appendix 5) The locking plate (1110) includes a locking plate horizontal portion (1111) and a locking plate vertical portion (1112) connected to both ends of the locking plate horizontal portion (1111), and a locking plate protrusion connected to the locking plate horizontal portion is provided between the two locking plate vertical portions (1112); a connection bump (1121) corresponding to one of the locking plate vertical portions (1112) is provided at both ends of the fixing plate (1120), a fixing protrusion (1123) is provided between the two connection bumps (1121), and two adapter bumps (1122) are provided on the fixing plate (1120); 3. A magnetic induction device for detecting the state of a pole switch according to claim 1 or 2.

[0039] (Appendix 6) The adapter plate (1130) includes an adapter plate horizontal part (1132) and an adapter plate vertical part (1131) connected to both ends of the adapter plate horizontal part (1132), the adapter plate vertical part (1131) is connected to a corresponding adapter bump (1122) on the fixing plate (1120), and the adapter plate horizontal part (1132) is fixedly connected to the mounting box body (1270) of the magnetic induction module. 6. A magnetic induction device for detecting the state of a pole switch as described in claim 5. [Explanation of symbols]

[0040] 1110 locking plate, 1111 locking plate horizontal part, 1112 locking plate vertical part, 1120 fixing plate, 1121 connection bump, 1122 adapter bump, 1123 fixing convex strip, 1130 adapter plate, 1131 adapter plate vertical part, 1132 adapter plate horizontal part, 1210 box cover, 1220 gasket, 1230 magnetic induction sensor, 1240 sensor fixing plate, 1241 fixing groove, 1250 fixing block, 1260 connection terminal, 1270 mounting box main body, 1271 mounting box cavity main body, 1272 mounting box main body through hole end, 1273 edge protrusion, 1280 metal hose joint, 1310 stopper, 1320 magnetic steel arm mounting plate, 1321 ring plate, 1322 straight plate, 1330 Magnetic steel arm, 1340 magnetic steel, 2000 pole-mounted switch, 2010 open / close indicator plate, 2011 gap in open / close indicator plate, 2012 upper end surface of open / close indicator plate, 2013 lower end surface of open / close indicator plate, 2020 indicator needle.

Claims

1. A magnetic induction device for detecting the state of a pole switch, comprising: A fixing module is used to fix the position of the magnetic induction device on the pole switch, and includes a locking plate (1110), a fixing plate (1120) and an adapter plate (1130) connected in sequence; a pointer rotation module that rotates with the pointer of the pole switch and has magnetic steel (1340) installed therein; a magnetic induction module fixed to the adapter plate (1130) and having a magnetic induction sensor (1230) for detecting a position signal of the pointer rotation module; The locking plate (1110) is locked in the gap between the pole switch body and the upper end of the open / close instruction plate (2010) via the locking plate ridges, The fixing plate (1120) is engaged in the gap between the body of the pole switch and the lower end of the open / close instruction plate (2010) via the fixing protrusion (1123). The locking plate (1110) and the fixing plate (1120) fix the fixing module to the opening / closing indication plate (2010); The fixed plate (1120) is connected to the adapter plate (1130); The pointer rotation module is engaged with the pointer of the pole switch via a stopper (1310).

1. A magnetic induction device for detecting the state of a pole switch, comprising:

2. The pointer rotation module includes a magnetic steel arm mounting plate (1320), one end of which is fixed with the stopper (1310) and the other end of which is fixed with a magnetic steel arm (1330). A magnetic steel (1340) is installed inside the magnetic steel arm (1330), and the stopper (1310) is fixed to the pointer of a pole switch.

2. A magnetic induction device for detecting the state of a pole switch according to claim 1.

3. The magnetic induction module includes a sensor fixing plate (1240), which is fixed inside a mounting box cavity body (1271) composed of a mounting box body (1270) and a box cover (1210), two magnetic induction sensors (1230) are fixed to the sensor fixing plate (1240), and a metal hose joint (1280) is installed on one side of the mounting box body (1270), which is used for wiring the magnetic induction sensors (1230).

3. A magnetic induction device for detecting the state of a pole switch according to claim 1 or 2.

4. An edge protrusion (1273) is provided on the opening edge of the mounting box body (1270), a groove matching the shape of the edge protrusion (1273) is provided on the side of the box cover (1210) facing the opening, and a gasket (1220) is provided between the mounting box body (1270) and the box cover (1210).

4. A magnetic induction device for detecting the state of a pole switch according to claim 3.

5. The locking plate (1110) includes a locking plate horizontal portion (1111) and a locking plate vertical portion (1112) connected to both ends of the locking plate horizontal portion (1111), the locking plate protrusion connected to the locking plate horizontal portion is installed between the two locking plate vertical portions (1112), a connection bump (1121) corresponding to one of the locking plate vertical portions (1112) is installed on both ends of the fixing plate (1120), the fixing protrusion (1123) is installed between the two connection bumps (1121), and two adapter bumps (1122) are installed on the fixing plate (1120); 3. A magnetic induction device for detecting the state of a pole switch according to claim 1 or 2.

6. The adapter plate (1130) includes an adapter plate horizontal part (1132) and an adapter plate vertical part (1131) connected to both ends of the adapter plate horizontal part (1132), the adapter plate vertical part (1131) is connected to the corresponding adapter bump (1122) on the fixing plate (1120), and the adapter plate horizontal part (1132) is fixedly connected to the mounting box body (1270) of the magnetic induction module; 6. A magnetic induction device for detecting the state of a pole switch according to claim 5.

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