Angular displacement detection mechanism for operating shaft of switching device

Abstract

The utility model provides a kind of angular displacement detection mechanism for switchgear operating shaft, including mounting bracket, first damping body, angular displacement sensor, second damping body and shaft coupling. Mounting bracket can be with its installation direction parallel to the angle of the axial direction of operating shaft Fixed to the support structure of switchgear. First damping body connects mounting bracket, and first damping body is made of damping material. The shell of angular displacement sensor connects first damping body, to indirectly connect in mounting bracket by first damping body. Second damping body connects the input shaft of angular displacement sensor, and second damping body is made of damping material. Shaft coupling connects second damping body, to indirectly connect the input shaft of angular displacement sensor by second damping body. Shaft coupling is used to connect the operating shaft of switchgear, to pass through second damping body angular displacement sensor of operating shaft Angle displacement is transmitted to. The angular displacement detection mechanism is conducive to improving the accuracy of measurement data.

Description

Technical Field

[0001] This utility model relates to the field of switchgear, and in particular to an angular displacement detection mechanism for the operating shaft of switchgear. Background Technology

[0002] The operating shaft of switchgear, such as the moving contact drive shaft of a three-position disconnector or the main shaft of the contact system of a circuit breaker, is the driving component for the movement of the switchgear contacts. Its angular displacement directly determines the accuracy and reliability of the switch position. Accurate measurement of the angular displacement of the operating shaft is crucial to ensuring equipment performance. However, current methods for measuring the angular displacement of the operating shaft are significantly affected by vibrations generated during equipment operation, leading to deviations in the measurement data. Utility Model Content

[0003] The purpose of this invention is to provide an angular displacement detection mechanism for the operating shaft of switching equipment, which can effectively reduce the impact of equipment vibration on measurement accuracy and improve the accuracy of measurement data.

[0004] This invention provides an angular displacement detection mechanism for the operating shaft of a switchgear. The operating shaft of the switchgear is rotatably mounted on the support structure of the switchgear. The angular displacement detection mechanism includes a mounting bracket, a first damper, an angular displacement sensor, a second damper, and a coupling. The mounting bracket can be fixed to the support structure of the switchgear at an angle parallel to the axial direction of the operating shaft. The first damper is connected to the mounting bracket and is made of damping material. The housing of the angular displacement sensor is connected to the first damper, indirectly connected to the mounting bracket via the first damper. The second damper is connected to the input shaft of the angular displacement sensor and is also made of damping material. The coupling connects to the second damper, indirectly connecting to the input shaft of the angular displacement sensor via the second damper. The coupling is used to connect the operating shaft to transmit the angular displacement of the operating shaft to the angular displacement sensor.

[0005] This angular displacement detection mechanism for the operating shaft of switching equipment can effectively isolate mechanical vibrations from the support structure and the operating shaft by setting a first damper and a second damper, effectively reducing the impact of equipment vibration on measurement accuracy and improving the accuracy of measurement data.

[0006] In another illustrative embodiment of the angular displacement detection mechanism for the operating shaft of a switching device, the first damping body is made of silicone or rubber. This facilitates better stability and vibration damping. Furthermore, silicone and rubber also possess insulating properties.

[0007] In another illustrative embodiment of the angular displacement detection mechanism for the operating shaft of a switchgear, the second damping body is made of silicone or rubber. This facilitates better stability and vibration damping. Furthermore, silicone and rubber also possess insulating properties.

[0008] In another illustrative embodiment of the angular displacement detection mechanism for the operating shaft of a switchgear, the mounting bracket includes a main body. The main body includes a connecting portion and a supporting portion arranged sequentially along the installation direction. The main body has a through hole extending through the connecting portion and the supporting portion along the installation direction. The supporting portion is used to connect the support structure of the switchgear. The connecting portion is cylindrical. A first damping body is cylindrical, with one end sleeved on the connecting portion and the other end connected to the housing of the angular displacement sensor. A coupling passes through the through hole, with one end indirectly connected to the input shaft of the angular displacement sensor via a second damping body, and the other end used to connect to the end of the operating shaft whose axis coincides with the axis of the input shaft of the angular displacement sensor. This structure is compact and has good stability.

[0009] In another illustrative embodiment of the angular displacement detection mechanism for the operating shaft of a switching device, a first flange protrudes from the outer peripheral surface of the connecting portion and is circumferentially arranged perpendicular to the installation direction. The angular displacement detection mechanism also includes a sensor mounting sleeve. The sensor mounting sleeve is cylindrical and fits onto the housing of the angular displacement sensor. A second flange protrudes from the outer peripheral surface of the sensor mounting sleeve and is circumferentially arranged perpendicular to the installation direction. One end of the first damper for connecting the angular displacement sensor is fitted onto the sensor mounting sleeve. Two annular grooves are formed on the inner surface of the first damper, respectively fitting the first flange and the second flange. This allows for axial locking of the main body, the first damper, and the sensor mounting sleeve, improving the stability of the mechanism.

[0010] In another illustrative embodiment of the angular displacement detection mechanism for the operating shaft of a switchgear, the outer peripheral surface of the housing of the angular displacement sensor has a recessed mounting groove that circumferentially surrounds the sensor along a direction perpendicular to the mounting direction. The inner surface of the sensor mounting sleeve has a third flange that fits into the mounting groove. The sensor mounting sleeve is formed by splicing two half-sleeves symmetrically arranged with respect to its axial cross-section. This allows for axial locking of the angular displacement sensor and the sensor mounting sleeve, improving the stability of the mechanism.

[0011] In another illustrative embodiment of the angular displacement detection mechanism for the operating shaft of a switchgear, a mating groove is recessed on the axial end face of the operating shaft. The front end of the coupling along the installation direction is provided with a plug-in portion that matches the shape of the mating groove. The angular displacement detection mechanism can insert the plug-in portion into the mating groove at an angle parallel to the axial direction of the operating shaft, thereby achieving torque transmission through the shape coupling of the mating groove and the plug-in portion. This structure is simple and can achieve relatively stable torque transmission.

[0012] In another illustrative embodiment of the angular displacement detection mechanism for the operating shaft of a switchgear, the support structure of the switchgear includes a bushing fitted onto the operating shaft. The bushing is circumferentially broken to form a notch. The mounting bracket also includes a limiting ring. The angular displacement detection mechanism can fit the limiting ring radially outward along the bushing at an angle parallel to the axial direction of the operating shaft. The inner circumferential surface of the limiting ring protrudes to form a limiting protrusion capable of engaging with the notch. This prevents the mounting bracket from rotating during the angular displacement detection process.

[0013] In another illustrative embodiment of the angular displacement detection mechanism for the operating shaft of a switchgear, the mounting bracket further includes a main body and several connecting posts extending along the mounting direction. The main body is indirectly connected to the angular displacement sensor via a first damping element. A limiting ring is disposed on the front side of the main body along the mounting direction. Each connecting post has its two ends connected to the limiting ring and the main body, respectively, and at least one end is connected via a threaded pair. The axis of the threaded pair is parallel to the mounting direction, allowing adjustment of the distance between the limiting ring and the main body along the mounting direction. This improves applicability.

[0014] In another illustrative embodiment of the angular displacement detection mechanism for the operating shaft of a switchgear, the mounting bracket includes a main body and a magnetic suction element. The main body is indirectly connected to the angular displacement sensor via a first damping body. The magnetic suction element includes a connecting rod and a magnetic suction head arranged sequentially along the installation direction. The magnetic suction head is located at the front side of the main body along the installation direction. The rear end of the connecting rod along the installation direction is threaded to the main body, and the thread axis is parallel to the installation direction. The magnetic suction head can be attracted to the support structure of the switchgear along the installation direction by magnetic attraction. This facilitates the installation of the angular displacement detection mechanism and has good applicability.

[0015] In another illustrative embodiment of the angular displacement detection mechanism for the operating shaft of a switchgear, the mounting bracket further includes adjusting shims. The adjusting shims are adjustable in number and are used to transmit clamping loads when clamped by the magnetic head and the main body. This improves stability.

[0016] In another illustrative embodiment of the angular displacement detection mechanism for the operating shaft of a switching device, one end of the second damping body is sleeved on the rear end of the coupling along the installation direction and forms a key connection, while the other end is sleeved on the end of the input shaft of the angular displacement sensor and forms a key connection. This structure is simple, has good stability, and is easy to assemble.

[0017] In another illustrative embodiment of the angular displacement detection mechanism for the operating shaft of a switchgear, the main body is made of insulating material so that the angular displacement detection mechanism can be used under high voltage conditions after the switchgear is powered on. Attached Figure Description

[0018] The following figures are for illustrative purposes only and do not limit the scope of the present invention.

[0019] Figure 1 This is a schematic diagram illustrating one embodiment of an angular displacement detection mechanism for the operating shaft of a switching device.

[0020] Figure 2 This is a schematic diagram showing the state of the angular displacement detection mechanism after installation.

[0021] Figure 3 for Figure 1 The diagram shown is an exploded view of the angular displacement detection mechanism.

[0022] Figure 4 for Figure 1 Another exploded view of the angular displacement detection mechanism shown.

[0023] Figure 5 for Figure 1 A partial cross-sectional schematic diagram of the angular displacement detection mechanism shown.

[0024] Figure 6 This is a schematic diagram illustrating another embodiment of the angular displacement detection mechanism.

[0025] Label Explanation

[0026] 10 mounting brackets

[0027] 11 Main Body

[0028] 112 Connecting part

[0029] F1 First flange

[0030] 114 Support section

[0031] 115 Through Hole

[0032] 12 Limiting rings

[0033] 121 Limiting protrusion

[0034] 13 Connecting Posts

[0035] 15 Magnetic components

[0036] 151 Connecting rod

[0037] 152 Magnetic Head

[0038] 16 Adjusting shims

[0039] 20 First damping body

[0040] 21 Annular groove

[0041] 30° angular displacement sensor

[0042] 31. Outer shell

[0043] 311 Mounting Slot

[0044] 32 Input Axis

[0045] 40 Second damping body

[0046] 50 Couplings

[0047] 51 Connector

[0048] 52 Fixed rod

[0049] 60 Sensor mounting sleeve

[0050] F2 Second flange

[0051] F3 Third flange

[0052] 61 Half set

[0053] 70 screws

[0054] 100° angular displacement detection mechanism

[0055] 200 Operating shaft of switchgear

[0056] 201 Mating Groove

[0057] Support structure of 300 switchgear

[0058] 301 support plate

[0059] 302 bushing

[0060] G gap

[0061] A Installation direction

[0062] C Zhou Xiang

[0063] L1 operating axis axis

[0064] The axis of the input shaft of the L2 angular displacement sensor Detailed Implementation

[0065] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, specific embodiments of the present utility model are now described with reference to the accompanying drawings. In the drawings, the same reference numerals indicate components with the same or similar structures but the same function.

[0066] In this document, “illustrative” means “serving as an example, illustration or description”, and any illustration or implementation described herein as “illustrative” should not be construed as a more preferred or advantageous technical solution.

[0067] In this document, terms such as "first" and "second" do not indicate their importance or order, but are only used to distinguish them to facilitate the description of the document.

[0068] To keep the drawings simple, each drawing only schematically shows the parts related to this utility model, and they do not represent the actual structure of the product.

[0069] In this patent application, nouns and pronouns relating to people are not limited to specific genders.

[0070] Figure 1 This is a schematic structural diagram illustrating one embodiment of an angular displacement detection mechanism for the operating shaft of a switching device. (See diagram below.) Figure 1 As shown by the dashed line, the operating shaft 200 of the switchgear is rotatably mounted on the support structure 300 of the switchgear (only a portion of the support structure 300 is shown in the figure). The support structure 300 includes, for example, a support plate 301 and a bushing 302. One end of the operating shaft 200 passes through the support plate 301, and the bushing 302 is fitted around the outer periphery of the operating shaft 200 and fixed to the support plate 301 to support the rotation of the operating shaft 200. The operating shaft 200 may be, for example, the moving contact drive shaft of a three-position disconnector or the main shaft of the contact system of a circuit breaker, but is not limited to these.

[0071] like Figure 1 As shown, the angular displacement detection mechanism 100 of this illustrative embodiment ( Figure 1 For example, the solid line portion can be installed on the support plate 301 of the support structure 300 along the installation direction A, and after installation, it can be connected to the end of the operating shaft 200 that protrudes from the support plate 301, thereby reaching the inspection station. Figure 2 The display shows the status of the angular displacement detection mechanism 100 after installation and arrival at the detection station.

[0072] Figure 3 for Figure 1 The diagram shown is an exploded view of the angular displacement detection mechanism. Figure 4 for Figure 1 Another exploded view of the angular displacement detection mechanism shown. Figure 5 for Figure 1 A partial cross-sectional schematic diagram of the angular displacement detection mechanism is shown. (Combined with...) Figure 1 and Figures 3 to 5 The angular displacement detection mechanism 100 includes a mounting bracket 10 ( Figure 4 The mounting bracket 10 was disassembled, along with a first damper 20, an angular displacement sensor 30, and a second damper 40. Figure 1 (not visible in the middle) and a coupling 50 (due to view obstruction, Figure 1 (Not marked in the text).

[0073] like Figure 1 As shown, the mounting bracket 10 can be fixed to the support structure 300 of the switching device at an angle where its mounting direction A is parallel to the axis L1 of the operating shaft 200. Specifically, in this illustrative embodiment, the mounting bracket 10 includes three magnetic members 15 ( Figure 1 (Only two of them are visible in the image). The magnetic attractant 15 can be magnetically attracted to the support plate 301 along the installation direction A, thereby facilitating the installation of the angular displacement detection mechanism 100. In other illustrative embodiments, the number of magnetic attractants 15 can be adjusted as needed. In other illustrative embodiments, the angular displacement detection mechanism 100 can also be installed on the support structure 300 in other ways.

[0074] The first damper 20 is connected to the mounting bracket 10, and the first damper 20 is made of damping material. The material of the first damper 20 is, for example, silicone or rubber, which provides good stability and damping effect, but is not limited to these. The housing 31 of the angular displacement sensor 30 ( Figure 4 and Figure 5 (As indicated in the image) Connect the first damper 20 to indirectly connect to the mounting bracket 10 via the first damper 20.

[0075] The second damper 40 is connected to the input shaft 32 of the angular displacement sensor 30. Figure 4 and Figure 5 (As indicated in the diagram), and the second damper 40 is made of a damping material, such as silicone or rubber, which provides good stability and damping effect, but is not limited to these. A coupling 50 connects the second damper 40 to indirectly connect the input shaft 32 of the angular displacement sensor 30. The coupling 50 is used to connect the operating shaft 200 to transmit the angular displacement of the operating shaft 200 to the angular displacement sensor 30. When both the first damper 20 and the second damper 40 are made of silicone or rubber, a certain degree of electrical insulation can also be achieved.

[0076] The angular displacement detection mechanism for the operating shaft of the switchgear can effectively isolate mechanical vibrations from the support structure 300 and the operating shaft 200 by setting a first damper 20 and a second damper 40, effectively reducing the impact of equipment vibration on measurement accuracy and improving the accuracy of measurement data.

[0077] Combination Figure 1 and Figures 3 to 5In the illustrative embodiment, the mounting bracket 10 includes a main body 11. The main body 11 includes a connecting portion 112 and a supporting portion 114 arranged sequentially along the mounting direction A. The main body 11 is provided with a through hole 115 passing through the connecting portion 112 and the supporting portion 114 along the mounting direction A. The supporting portion 114 is used to connect the support structure 300 of the switchgear. The supporting portion 114 is, for example, plate-shaped, which can make the overall structure more concise and compact, but is not limited thereto. The connecting portion 112 is a straight cylinder arranged parallel to the mounting direction A. The first damping body 20 is a straight cylinder arranged parallel to the mounting direction A, and one end is tightly fitted on the outside of the connecting portion 112 by its own elasticity, and the other end is connected to the housing 31 of the angular displacement sensor 30. Specifically, in this illustrative embodiment, the angular displacement detection mechanism 100 also includes a sensor fixing sleeve 60 sleeved on the housing 31 of the angular displacement sensor 30. The first damping body 20 is tightly fitted on the outside of the sensor fixing sleeve 60 by its own elasticity, thereby realizing an indirect connection with the angular displacement sensor 30. The sensor mounting sleeve 60 serves as an intermediate connector between the first vibration damper 20 and the angular displacement sensor 30. Its structure can be designed according to the actual shape of the angular displacement sensor 30 to achieve a stable connection. However, it is not limited to this. In other illustrative embodiments, the first vibration damper 20 can also be directly sleeved onto the angular displacement sensor 30. For example... Figure 5 As shown, the coupling 50 passes through the through hole 115, and one end is indirectly connected to the input shaft 32 of the angular displacement sensor 30 through the second damping body 40, while the other end is used to connect to the end of the operating shaft 200 whose axis coincides with the axis L2 of the input shaft 32 of the angular displacement sensor 30. This structure is compact and has good stability.

[0078] like Figures 3 to 5 As shown in the schematic embodiment, the outer peripheral surface of the connecting portion 112 protrudes to form a first flange F1 that surrounds the connecting portion 112 in a circumferential direction C perpendicular to the mounting direction A. The first flange F1 is located, for example, at the axial end of the connecting portion 112, but is not limited thereto. The sensor fixing sleeve 60 is a straight cylindrical shape parallel to the mounting direction A. The outer peripheral surface of the sensor fixing sleeve 60 protrudes to form a second flange F2 that surrounds the sensor fixing sleeve 60 in a circumferential direction C perpendicular to the mounting direction A. The second flange F2 is located, for example, at the axial end of the sensor fixing sleeve 60, but is not limited thereto. The inner surface of the first damping body 20 has two annular grooves 21 that respectively fit the first flange F1 and the second flange F2. This allows for axial locking of the main body 11, the first damping body 20, and the sensor fixing sleeve 60, improving the stability of the mechanism.

[0079] like Figure 4 and Figure 5As shown in the schematic embodiment, the outer peripheral surface of the housing 31 of the angular displacement sensor 30 is recessed to form a mounting groove 311 that surrounds the sensor 30 circumferentially along the mounting direction C perpendicular to the mounting direction A. The inner surface of the sensor mounting sleeve 60 has a third flange F3 that fits into the mounting groove 311. The third flange F3 is provided, for example, at the axial end of the sensor mounting sleeve 60, but is not limited thereto. This allows for axial locking of the angular displacement sensor 30 and the sensor mounting sleeve 60, improving the stability of the mechanism. The sensor mounting sleeve 60 is formed by splicing two half-sleeves 61 symmetrically arranged with respect to its axial cross-section, facilitating assembly with the angular displacement sensor 30.

[0080] like Figure 5 As shown in this illustrative embodiment, the cavity of the sensor fixing sleeve 60 is further provided with a partition 62 covering the end face of the angular displacement sensor 30, and the input shaft 32 of the angular displacement sensor 30 passes through the partition 62. This helps to improve structural strength, but is not limited thereto. In other illustrative embodiments, the partition 62 may not be provided.

[0081] like Figure 1 As shown, in the illustrative embodiment, the axial end face of the operating shaft 200 is recessed with a mating groove 201. For example... Figures 3 to 5 As shown, the coupling 50 has a plug-in portion 51 at its front end along the installation direction A, which matches the shape of the mating groove 201. The angular displacement detection mechanism 100 can insert the plug-in portion 51 into the mating groove 201 along the installation direction A at an angle parallel to the axial direction of the operating shaft 200, so as to achieve torque transmission through the shape coupling of the mating groove 201 and the plug-in portion 51. This structure is simple and can achieve torque transmission relatively stably. In the illustrative embodiment, the coupling 50 also includes a fixing rod 52 extending along the installation direction A, one end of which is connected to the plug-in portion 51, and the other end is connected to the second damping body 40.

[0082] like Figure 1 In the illustrative embodiment, the bushing 302 of the support structure 300 of the switching device is broken along its circumference, forming a notch G. For example... Figure 1 and Figure 4 As shown, the mounting bracket 10 also includes a limiting ring 12. The angular displacement detection mechanism 100 can fit the limiting ring 12 radially outside the bushing 302 at an angle where the mounting direction A is parallel to the axial direction of the operating shaft 200. Figure 4 As shown, the inner circumferential surface of the limiting ring 12 has a protruding limiting protrusion 121 that can engage with the notch G. This prevents the mounting bracket 10 from rotating during the detection process of the angular displacement detection mechanism 100.

[0083] like Figure 4 and Figure 5As shown, in the illustrative embodiment, the mounting bracket 10 also includes three connecting posts 13 extending along the mounting direction A. Figure 5 Only two of them are visible in the image. The limiting ring 12 is located on the front side of the main body 11 along the installation direction A. (For example...) Figure 5 As shown, one end of each connecting post 13 is connected to the limiting ring 12 via a screw 70 threaded through it, and the other end is connected to the support portion 114 of the main body 11 via a threaded pair. The axis of the threaded pair is parallel to the installation direction A, allowing adjustment of the distance between the limiting ring 12 and the main body 11 along the installation direction A to improve applicability. Different models of limiting rings 12 can be replaced by removing and installing the screws 70 to match various models of bushings 302, thereby improving applicability. In other illustrative embodiments, the number of connecting posts 13 can be adjusted as needed.

[0084] like Figure 4 and Figure 5 As shown in the schematic embodiment, the magnetic suction member 15 includes a connecting rod 151 and a magnetic suction head 152 arranged sequentially along the installation direction A. The magnetic suction head 152 is located on the front side of the main body 11 along the installation direction A. The rear end of the connecting rod 151 along the installation direction A is threaded to the support portion 114 of the main body 11, and the thread axis is parallel to the installation direction A, thereby adjusting the relative position of the magnetic suction head 152 and the main body 11 along the installation direction A, thereby improving applicability. The magnetic suction head 152 can be attracted to the support structure 300 of the switching device along the installation direction A by magnetic attraction.

[0085] In other illustrative embodiments, such as Figure 6 As shown, the mounting bracket 10 further includes, for example, adjusting shims 16. The adjusting shims 16 can be adjusted in number to fit onto the connecting rod 151 and are used to transmit clamping load when clamped by the magnetic head 152 and the support 114, thereby improving stability. In use, the number of adjusting shims 16 can be adjusted as needed so that when the adjusting shims 16 are clamped by the magnetic head 152 and the support 114, the relative position between the magnetic head 152 and the main body 11 meets the detection requirements.

[0086] like Figure 4 and Figure 5As shown in the schematic embodiment, the second damper 40 is generally tubular. One end of the second damper 40 is elastically fitted onto the rear end of the fixing rod 52 of the coupling 50 along the installation direction A, forming a keyed connection. This keyed connection is achieved, for example, through a keyway formed on the axial end face of the fixing rod 52 and a flat key within the cavity of the damper 40, but is not limited to this. The other end of the second damper 40 is elastically fitted onto the end of the input shaft 32 of the angular displacement sensor 30, forming a keyed connection. This keyed connection is achieved, for example, through a keyway formed on the axial end face of the input shaft 32 and a flat key within the cavity of the damper 40, but is not limited to this. This structure is simple, stable, and easy to assemble. The second damper 40 and the coupling 50 function as a coaxial coupling connecting the input shaft 32 and the operating shaft 200 of the angular displacement sensor 30.

[0087] In the illustrative embodiment, the main body 11 is made of an insulating material, for example, so that the angular displacement detection mechanism 100 can be used under high voltage conditions after the switching equipment is powered on. Insulating materials include, but are not limited to, PEEK (polyetheretherketone), PPA+long glass fiber (LFT-PPA), PBT-GF30 (30% glass fiber reinforced polybutylene terephthalate), etc. Of course, other components of the angular displacement detection mechanism 100, such as the sensor mounting sleeve 60, coupling 50, limiting ring 12, and connecting post 13, can also be made of insulating materials, provided that structural strength requirements are met.

[0088] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0089] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. All equivalent implementation schemes or modifications made without departing from the spirit of the present utility model, such as combinations, divisions or repetitions of features, should be included within the scope of protection of the present utility model.

Claims

1. An angular displacement detection mechanism for the operating shaft of a switchgear, wherein the operating shaft (200) of the switchgear is rotatably mounted on the support structure (300) of the switchgear, characterized in that, The angular displacement detection mechanism includes: Mounting bracket (10) is fixed to the support structure (300) of the switchgear at an angle parallel to the axial direction of the operating shaft (200) with its mounting direction (A) parallel to the axial direction of the operating shaft (200); A first damper (20) is connected to the mounting bracket (10), and the first damper (20) is made of damping material; An angular displacement sensor (30) has its housing (31) connected to the first damper (20) so as to be indirectly connected to the mounting bracket (10) through the first damper (20); A second damper (40) is connected to the input shaft (32) of the angular displacement sensor (30), and the second damper (40) is made of a damping material; and A coupling (50) is connected to the second damper (40) to indirectly connect the input shaft (32) of the angular displacement sensor (30) through the second damper (40). The coupling (50) is used to connect the operating shaft (200) to transmit the angular displacement of the operating shaft (200) to the angular displacement sensor (30).

2. The angular displacement detection mechanism for the operating shaft of a switching device as described in claim 1, characterized in that, The first damper (20) is made of silicone or rubber, and / or the second damper (40) is made of silicone or rubber.

3. The angular displacement detection mechanism for the operating shaft of a switching device as described in claim 1, characterized in that, The mounting bracket (10) includes a main body (11), which includes a connecting part (112) and a supporting part (114) arranged sequentially along the mounting direction (A), and is provided with a through hole (115) passing through the connecting part (112) and the supporting part (114) along the mounting direction (A). The supporting part (114) is used to connect the support structure (300) of the switchgear. The connecting part (112) is cylindrical. The first vibration damper (20) The coupling (50) is cylindrical and has one end sleeved on the connecting part (112) and the other end connected to the housing (31) of the angular displacement sensor (30). The coupling (50) passes through the through hole (115) and one end is indirectly connected to the input shaft (32) of the angular displacement sensor (30) through the second damping body (40). The other end is used to connect to the end of the operating shaft (200) whose axis coincides with the axis of the input shaft (32) of the angular displacement sensor (30).

4. The angular displacement detection mechanism for the operating shaft of a switching device as described in claim 3, characterized in that, The outer peripheral surface of the connecting part (112) protrudes to form a first flange (F1) that surrounds the angular displacement sensor (30) in a circumferential direction (C) perpendicular to the mounting direction (A). The angular displacement detection mechanism also includes a sensor fixing sleeve (60), which is cylindrical and fitted onto the outer shell (31) of the angular displacement sensor (30). The outer peripheral surface of the sensor fixing sleeve (60) protrudes to form a second flange (F2) that surrounds the angular displacement sensor (30) in a circumferential direction (C) perpendicular to the mounting direction (A). One end of the first damping body (20) for connecting the angular displacement sensor (30) is fitted onto the sensor fixing sleeve (60). The inner surface of the first damping body (20) forms two annular grooves (21) that respectively fit the first flange (F1) and the second flange (F2); and / or The main body (11) is made of insulating material.

5. The angular displacement detection mechanism for the operating shaft of a switching device as described in claim 4, characterized in that, The outer peripheral surface of the housing (31) of the angular displacement sensor (30) is recessed to form a mounting groove (311) that is arranged around the periphery (C) perpendicular to the mounting direction (A). The inner surface of the sensor fixing sleeve (60) is formed with a third flange (F3) that fits into the mounting groove (311). The sensor fixing sleeve (60) is formed by splicing two half-sleeves (61) that are symmetrically arranged with respect to its axial section.

6. The angular displacement detection mechanism for the operating shaft of a switching device as described in claim 1, characterized in that, The axial end face of the operating shaft (200) is recessed with a mating groove (201). The front end of the coupling (50) along the installation direction (A) is provided with a plug-in part (51) that matches the shape of the mating groove (201). The angular displacement detection mechanism can insert the plug-in part (51) into the mating groove (201) along the installation direction (A) at an angle parallel to the axial direction of the operating shaft (200) so as to achieve torque transmission through the shape coupling of the mating groove (201) and the plug-in part (51).

7. The angular displacement detection mechanism for the operating shaft of a switching device as described in claim 6, characterized in that, The support structure (300) of the switchgear includes a bushing (302) fitted onto the operating shaft (200), the bushing (302) being circumferentially broken to form a notch (G), the mounting bracket (10) further includes a limiting ring (12), the angular displacement detection mechanism being able to fit the limiting ring (12) radially outward along the mounting direction (A) of the bushing (302) at an angle parallel to the axial direction of the operating shaft (200), the inner circumferential surface of the limiting ring (12) protruding to form a limiting protrusion (121) capable of engaging with the notch (G); and / or The mounting bracket (10) further includes a main body (11) and several connecting posts (13) extending along the mounting direction (A). The main body (11) is indirectly connected to the angular displacement sensor (30) through the first damping body (20). The limiting ring (12) is disposed on the front side of the main body (11) along the mounting direction (A). The two ends of each connecting post (13) are respectively connected to the limiting ring (12) and the main body (11), and at least one end is connected by a threaded pair. The axis of the threaded pair is parallel to the mounting direction (A) so that the distance between the limiting ring (12) and the main body (11) along the mounting direction (A) can be adjusted.

8. The angular displacement detection mechanism for the operating shaft of a switching device as described in any one of claims 1-7, characterized in that, The mounting bracket (10) includes a main body (11) and a magnetic suction component (15). The main body (11) is indirectly connected to the angular displacement sensor (30) through the first damping body (20). The magnetic suction component (15) includes a connecting rod (151) and a magnetic suction head (152) arranged sequentially along the installation direction (A). The magnetic suction head (152) is located on the front side of the main body (11) along the installation direction (A). The rear end of the connecting rod (151) along the installation direction (A) is threaded to the main body (11), and the thread axis is parallel to the installation direction (A). The magnetic suction head (152) can be attracted to the support structure (300) of the switching device along the installation direction (A) by magnetic attraction.

9. The angular displacement detection mechanism for the operating shaft of a switching device as described in claim 8, characterized in that, The mounting bracket (10) also includes adjusting shims (16), which can be adjusted in number to be fitted onto the connecting rod (151) and are used to transmit clamping load when clamped by the magnetic head (152) and the main body (11).

10. The angular displacement detection mechanism for the operating shaft of a switching device as described in any one of claims 1-9, characterized in that, One end of the second damper (40) is sleeved on the rear end of the coupling (50) along the installation direction (A) and forms a key connection, and the other end is sleeved on the end of the input shaft (32) of the angular displacement sensor (30) and forms a key connection.

Images