GIS connecting mechanism tail end mechanical indicating device and method based on intermittent gear driving

Abstract

The invention provides a GIS connecting mechanism tail end mechanical indicating device and method based on intermittent gear driving, and belongs to the technical field of high-voltage switch equipment. The invention provides a GIS connecting mechanism tail end mechanical indicating device based on intermittent gear driving. The GIS connecting mechanism tail end mechanical indicating device comprises a gear transmission shaft, an intermittent gear assembly driven by the gear transmission shaft to operate, an indicating assembly connected with the output end of the intermittent gear assembly and an observation window used for displaying the opening and closing state. The gear transmission shaft is connected with the tail end of a GIS linkage transmission mechanism main shaft, and a driving gear on the gear transmission shaft is meshed with a straight gear at the input end of the intermittent gear assembly to form speed reduction transmission. The intermittent gear assembly is of a double-intermittent-gear combined structure, and the decelerated continuous rotation is converted into intermittent output so as to drive the indicating assembly to rotate according to a preset angle. And the indicating dial is matched with the observation window through the indicating shaft to display switching-off and switching-on states. According to the invention, misjudgment can be reduced, and display reliability and transmission stability are improved.

Description

Technical Field

[0001] This application relates to the field of high voltage switchgear technology, and in particular to a mechanical indicating device and method for the end of a GIS connection mechanism based on intermittent gear drive. Background Technology

[0002] Gas-insulated switchgear (GIS) is a crucial piece of equipment in modern power systems used for controlling and protecting high-voltage transmission lines. GIS integrates insulation and heat dissipation through a sealed, gas-filled structure. Its linkage mechanism typically drives the operation of components such as circuit breakers, disconnectors, and grounding switches. To enable operators to accurately assess the internal working status of the equipment from the outside, GIS devices are generally equipped with end-point mechanical indicators. These indicators, through mechanical transmission, visually display the internal opening and closing status on an external window, thus assisting in operation and maintenance and safety inspections. With the development of GIS equipment towards higher voltage, compactness, and intelligence, higher demands are placed on the accuracy and reliability of these indicators.

[0003] In existing engineering applications (such as 550kV GIS), isolating / grounding switches often employ three-phase mechanical linkage operation, and external status indicators are frequently installed on phase C. In such devices, the rotation of the indicator is usually synchronized with the operating mechanism, with a large rotation range (e.g., reaching thousands of degrees, typically exceeding 1000°), and several equally spaced observation holes are arranged on the outer casing for reading the "open / closed" markings. Because the indicator rotates continuously for more than one revolution during a single operation, the same character will pass through the observation holes multiple times and be briefly displayed, resulting in multiple displays of "open" or "closed" within an operating cycle. In this continuous display mode, the display result depends on the relative passage during the rotation process rather than a single confirmation of the final position: on the one hand, if the internal mechanism is not in position and the indicator happens to align with the observation hole at a certain moment, it is easy to misjudge that it has reached the correct position; on the other hand, deformation of the connecting rod or the end angle deviation caused by cumulative tolerances will cause the character to deviate from the center of the observation hole, leading to ambiguous readings.

[0004] Therefore, the core contradiction of the existing continuous indication mode lies in the fact that while one actual operation corresponds to multiple visible occurrences, it lacks a unique confirmation of the final positioning status. This contradiction is particularly evident in abnormal scenarios such as transmission failure or end-effector angle deviation, failing to intuitively reflect the true action status of the mechanism, posing potential risks to operation monitoring and safe operation, and easily leading to misjudgments of the opening and closing status by maintenance personnel. Therefore, it is necessary to improve the transmission and display methods of the indication mechanism so that one opening and closing operation corresponds to only one clearly readable external display, and ensure that the display position accurately reflects whether the mechanism is in position, thereby improving the reliability of the status display. Summary of the Invention

[0005] This application provides a mechanical indicator device and method for the end of a GIS connection mechanism based on intermittent gear drive, in order to solve the problem that the mechanical indicator mechanism used to display the opening and closing status in existing GIS equipment adopts a continuous indicator structure, which results in multiple visible passes during a single operation, leading to unreliable positioning judgment and easy misjudgment.

[0006] In a first aspect, this application provides a mechanical indicator device for the end of a GIS connection mechanism based on intermittent gear drive, including a gear drive shaft, an intermittent gear assembly driven by the gear drive shaft, an indicator component connected to the output end of the intermittent gear assembly, and an observation window for displaying the opening and closing status. The gear drive shaft is connected to the end of the main shaft of the GIS linkage transmission mechanism, which is located in the GIS linkage transmission box. A drive gear is fixedly installed on the gear drive shaft. The drive gear meshes with a spur gear located at the input end of the intermittent gear assembly to form a first-stage reduction transmission mechanism, which is used to reduce the rotational motion of the main shaft of the GIS linkage transmission mechanism by a predetermined transmission ratio and then transmit it to the intermittent gear assembly to reduce the output angular velocity. The intermittent gear assembly adopts a double intermittent gear combination structure, which is used to convert the reduction output of the spur gear into an intermittent rotational output, so as to drive the indicator component to rotate intermittently at a predetermined angle; The indicating component includes an indicating shaft connected to the output end of the intermittent gear assembly, and the other end of the indicating shaft is equipped with an indicating panel for displaying the closed and open states of the GIS linkage transmission mechanism. The observation window is fixedly installed on the outer end cover of the GIS linkage transmission box, and is used in conjunction with the indicator panel to allow the operator to visually determine the opening and closing status of the GIS linkage transmission mechanism from the outside.

[0007] In one alternative embodiment, the intermittent gear assembly includes an intermittent gear I coaxially mounted with the spur gear and an intermittent gear II meshing with the intermittent gear I; The intermittent gear I has two intermittent drive tooth segments spaced circumferentially on its circumference, and a non-meshing arc area is provided between the two adjacent intermittent drive tooth segments. The intermittent gear II is provided with a meshing groove that mates with the intermittent drive tooth segment and a resting arc surface corresponding to the non-meshing arc area; When the intermittent gear I rotates under the drive of the spur gear, the two intermittent drive gear segments can be inserted into the meshing groove during the opening and closing actions of the GIS linkage transmission mechanism, and drive the intermittent gear II to rotate and output intermittently.

[0008] In one optional implementation, when the GIS linkage transmission mechanism is performing opening and closing actions, the intermittent gear II completes an intermittent rotation of 90° under each meshing drive, so that the indicator panel of the indicator component switches the display status between the opening and closing states through the observation window.

[0009] In one optional embodiment, the gear drive shaft has an irregular structure at both ends. One end of the gear drive shaft is an external threaded end, which is used to connect with and axially fix the threaded hole at the end of the main shaft of the GIS linkage transmission mechanism. The other end of the gear drive shaft is machined with a bearing mounting hole along the axial direction. A rolling bearing is fixedly assembled in the bearing mounting hole. The outer ring of the rolling bearing is fitted into the bearing mounting hole. The inner ring of the rolling bearing is used to insert the shaft end of the intermittent gear II and is supported and positioned by the rolling bearing. The rotation of the intermittent gear II is driven by the meshing of the intermittent gear I. The drive gear is fixedly disposed on the outer periphery of the gear transmission shaft and located in the axial position between the external thread end and the bearing mounting hole.

[0010] In one optional embodiment, an annular groove is provided axially behind the external thread end of the gear drive shaft, and two disc springs are installed in the annular groove. When the gear drive shaft is connected to the threaded hole at the end of the main shaft of the GIS linkage transmission mechanism through the external thread end, thread-locking adhesive is applied to the threaded connection area, and after tightening, the two disc springs can apply an axial elastic preload to the gear drive shaft to improve the stability of the gear drive connection and prevent the connection from loosening.

[0011] In one alternative embodiment, the two disc springs are mounted in the annular groove in a reverse stacked configuration with their concave surfaces facing each other.

[0012] In one alternative embodiment, the intermittent gear assembly further includes a mounting plate, a first bearing assembly, a second bearing assembly, a drive shaft for mounting the intermittent gear I, and an output shaft for mounting the intermittent gear II. The drive shaft is arranged parallel to the output shaft and is respectively connected to the mounting plate through the first bearing assembly and the second bearing assembly; The output shaft is fixedly connected to the indicator shaft and is used to transmit the rotation of the gear transmission shaft to the indicator assembly via the intermittent gear assembly; One end of the drive shaft is fixedly connected to a spur gear, and the spur gear meshes with the intermittent gear I for transmission. The first bearing assembly and the second bearing assembly are mounted on the mounting plate, and the output end of the drive shaft is connected to the first bearing assembly, and the output end of the output shaft is connected to the second bearing assembly. Both the first bearing assembly and the second bearing assembly consist of two bearings arranged one in front of the other.

[0013] In one optional embodiment, the indicator disc has a bowl-shaped structure, with a connecting rod at the center of its inner surface, and the indicator disc is fixedly connected to the indicator shaft via the connecting rod and countersunk screws. The outer surface of the indicator panel is divided into an open marking area and an closed marking area along the circumference. The open marking area and the closed marking area are visually distinguished by different colors, patterns or text. The observation window is provided with a transparent observation area. When the GIS linkage transmission mechanism is in the open or closed state, the open or closed indicator area can be exposed through the transparent observation area, so that the operator can intuitively identify the open or closed state of the GIS linkage transmission mechanism.

[0014] In one optional embodiment, the outer end cap is fixedly installed to the end of the GIS linkage transmission box by screws; The outer end cap has a circular hole in the middle so that the indicator shaft can pass through and connect to the indicator disc; The observation window is fixedly mounted on the outer surface of the outer end cover by screws, and a silicone rubber gasket is provided between the observation window and the outer end cover.

[0015] Secondly, this application also provides a mechanical indication method for the end of a GIS connection mechanism based on intermittent gear drive, using the mechanical indication device provided in this application. The indication method includes the following steps: S1. When the GIS linkage transmission mechanism performs the opening or closing action, the main shaft of the GIS linkage transmission mechanism generates rotational motion under the driving action, and transmits the rotational motion to the intermittent gear assembly through the gear transmission shaft. S2. By utilizing the engagement of the driving gear on the gear transmission shaft with the spur gear at the input end of the intermittent gear assembly, the input speed is reduced according to a predetermined transmission ratio; S3. The intermittent gear assembly converts the decelerated rotational motion into intermittent output through intermittent gear transmission, so as to drive the indicator assembly to complete one intermittent rotation in each transmission cycle; S4. During the rotation of the indicator component, the indicator disk is aligned with the display position of the open or closed state. The display position of the indicator disk is observed through the observation window provided on the outer end cover to determine whether the GIS linkage transmission mechanism is currently in the open or closed state.

[0016] Compared with the prior art, this application has the following beneficial effects: 1. This application introduces a connection structure between a gear drive shaft and the main shaft of the GIS linkage transmission mechanism on the input side of the transmission chain, and sets a driving gear on the gear drive shaft, so that the upstream transmission power can be transmitted to the intermittent gear assembly in a relatively stable form. This structure achieves the adjustment of the high-speed operation of the main shaft in the initial stage of transmission, making the input motion smoother and thus suppressing angular velocity fluctuations to a certain extent. After the driving gear and spur gear mesh to form a reduction transmission relationship, the power transmitted to the intermittent gear assembly is further shaped, which helps to obtain a more defined angular displacement response in the subsequent intermittent drive process. This front-end stabilization design of power input creates good input conditions for the subsequent intermittent drive of the indicating device, improving the consistency and repeatability of the output angular displacement.

[0017] 2. In the intermediate transmission stage, this embodiment uses an intermittent gear assembly to change continuous rotation into segmented output. Specifically, intermittent gear I and intermittent gear II mesh during the opening and closing actions, causing the output to no longer rotate continuously, but instead to produce a limited-angle rotation at the action node. This ensures that each opening or closing action corresponds to only one specific angular displacement change. This intermittent characteristic structurally limits the repeated display of the same indicator, making the movement trajectory of the indicator panel present a step-by-step response, reducing the situation where "the same indicator passes through the observation window multiple times" in traditional continuous structures. In this way, when the linkage transmission mechanism is not fully in place, the intermittent output end will not rotate to the next stable display position prematurely, thereby reducing the risk of misjudging as "in place" and establishing a clearer correspondence between the display state and the actual action.

[0018] 3. At the output end, this embodiment visually presents the angular displacement changes in the transmission chain through the cooperation of the indicating component and the observation window. The fixed connection between the indicating shaft and the indicating disk ensures the synchronicity of the angular displacement transmission, while the observation window is mounted on the outer end cover, making the display position fixed and the reading angle consistent. The single angular displacement output by the intermittent gear assembly is used to correspond to the display area of ​​the observation window showing the open and closed status. During use, the operator only needs to look at the observation window to intuitively judge the current status without repeated confirmation or comparison, thereby helping to improve the accuracy and response efficiency of the operation. Through this structural arrangement, the indicating device of this embodiment, combined with the steady-state transmission on the input side, the intermittent output in the middle section, and the fixed display at the end, forms a synergistic cooperation, enabling the entire device to achieve both open and closed status indication and good mechanical response characteristics and status recognition reliability. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the end mechanical indicator device of a GIS connection mechanism based on intermittent gear drive after installation, according to an embodiment of this application; Figure 2 An exploded view of the end mechanical indicator device of a GIS connection mechanism based on intermittent gear drive, provided in an embodiment of this application; Figure 3 for Figure 2 A schematic diagram of the intermittent gear assembly within the GIS linkage transmission box; Figure 4 This is a schematic diagram showing the connection between the gear drive shaft and the intermittent gear assembly provided in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of a gear drive shaft provided in one embodiment of this application; Figure 6 This is a schematic diagram of a gear drive shaft provided in one embodiment of this application from another perspective; Figure 7 This is a schematic diagram of the connection between the indicator shaft and the indicator disk provided in one embodiment of this application; Figure 8 This is a schematic diagram of the structure of an indicator shaft provided in one embodiment of this application; Figure 9 A schematic diagram of a first bearing assembly and a second bearing assembly provided in an embodiment of this application on a mounting plate.

[0021] Explanation of reference numerals in the attached figures: 10-GIS linkage transmission mechanism main shaft; 20-GIS linkage transmission box; 100 - Gear drive shaft; 101 - Bearing mounting hole; 102 - External thread end; 103 - Rolling bearing; 104 - Annular groove; 105 - Disc spring; 110 - Drive gear; 200 - Intermittent gear assembly; 201 - Spur gear; 210 - Intermittent gear I; 211 - Intermittent drive tooth segment; 212 - Non-meshing arc area; 220 - Intermittent gear II; 221 - Meshing groove; 222 - Stopping arc surface; 230 - Drive shaft; 240 - Output shaft; 250 - Mounting plate; 260 - First bearing assembly; 270 - Second bearing assembly; 300 - Indicator assembly; 310 - Indicator shaft; 320 - Indicator disc; 321 - Opening indicator area; 322 - Closing indicator area; 323 - Linkage rod; 324 - Countersunk screw; 400 - Observation window; 410 - Transparent observation area; 420 - Silicone rubber pad; 500 - Outer end cap; 501 - Round hole. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.

[0023] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly, for example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] Please see Figures 1-9 , Figure 1 A schematic diagram of the end mechanical indicator device of a GIS connection mechanism based on intermittent gear drive after installation, according to an embodiment of this application; Figure 2 An exploded view of the end mechanical indicator device of a GIS connection mechanism based on intermittent gear drive, provided in an embodiment of this application; Figure 3 for Figure 2A schematic diagram of the intermittent gear assembly within the GIS linkage transmission box; Figure 4 This is a schematic diagram showing the connection between the gear drive shaft and the intermittent gear assembly provided in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of a gear drive shaft provided in one embodiment of this application; Figure 6 This is a schematic diagram of a gear drive shaft provided in one embodiment of this application from another perspective; Figure 7 This is a schematic diagram of the connection between the indicator shaft and the indicator disk provided in one embodiment of this application; Figure 8 This is a schematic diagram of the structure of an indicator shaft provided in one embodiment of this application; Figure 9 A schematic diagram of a first bearing assembly and a second bearing assembly provided in an embodiment of this application on a mounting plate.

[0027] In gas-insulated switchgear (GIS), disconnecting switches and grounding switches typically employ a linked operation structure, using a mechanical transmission mechanism to achieve sequential switching and state interlocking between the two. This linked transmission mechanism generally consists of a drive shaft, transmission links, and an end-of-line display component, used to mechanically transmit the driving force generated by the operating mechanism to drive the disconnecting or grounding contacts to achieve opening and closing actions. During equipment operation, to facilitate operator external judgment of the switch status, a mechanical indicating device is usually installed at the end of the linked transmission mechanism, allowing the actual positions of the disconnecting and grounding switches to be displayed correspondingly through an external observation window. However, due to the complexity of the transmission structure and the cumulative error of angular displacement, traditional indicating devices are prone to display lag or offset in long-stroke linkages or multi-stage transmissions, affecting the accuracy of status identification.

[0028] To address the aforementioned issues, this application provides a mechanical indicator device and method for the end of a GIS connection mechanism based on intermittent gear drive. By introducing an intermittent transmission structure at the end of the linkage transmission system, a one-to-one correspondence between the output angular displacement and the opening and closing states is achieved, thereby improving display accuracy and reducing the risk of misjudgment.

[0029] like Figures 1-3 As shown, this application provides a mechanical indicator device for the end of a GIS connection mechanism based on intermittent gear drive, including a gear drive shaft 100, an intermittent gear assembly 200 driven by the gear drive shaft 100, an indicator component 300 connected to the output end of the intermittent gear assembly 200, and an observation window 400 for displaying the opening and closing status.

[0030] The gear drive shaft 100 is connected to the end of the main shaft 10 of the GIS linkage transmission mechanism, which is located in the GIS linkage transmission housing 20. A drive gear 110 is fixedly installed on the gear drive shaft 100. The drive gear 110 meshes with the spur gear 201 located at the input end of the intermittent gear assembly 200 to form a first-stage reduction transmission mechanism, which is used to reduce the rotational motion of the main shaft 10 of the GIS linkage transmission mechanism by a predetermined transmission ratio and then transmit it to the intermittent gear assembly 200 to reduce the output angular velocity.

[0031] The intermittent gear assembly 200 adopts a double intermittent gear combination structure to convert the reduction output of the spur gear 201 into an intermittent rotational output, so as to drive the indicator assembly 300 to rotate intermittently at a predetermined angle; The indicator assembly 300 includes an indicator shaft 310 connected to the output end of the intermittent gear assembly 200, and an indicator panel 320 for displaying the closed and open states of the GIS linkage transmission mechanism is installed at the other end of the indicator shaft 310.

[0032] The observation window 400 is fixedly installed on the outer end cover 500 installed on the outer side of the end of the GIS linkage transmission box 20, and is used in conjunction with the indicator panel 320 to allow the operator to visually determine the opening and closing status of the GIS linkage transmission mechanism from the outside.

[0033] In this embodiment, by introducing a connection structure between the gear drive shaft 100 and the main shaft 10 of the GIS linkage transmission mechanism on the input side of the transmission chain, and by setting a drive gear 110 on the gear drive shaft 100, the upstream transmission power can be transmitted to the intermittent gear assembly 200 in a relatively stable form. This structure achieves the adjustment of the high-speed operation of the main shaft in the initial stage of transmission, making the input motion smoother and thus suppressing angular velocity fluctuations to a certain extent. After the drive gear 110 and the spur gear 201 mesh to form a reduction transmission relationship, the power transmitted to the intermittent gear assembly 200 is further shaped, which helps to obtain a more defined angular displacement response in the subsequent intermittent drive process. This front-end stabilization design of power input creates good input conditions for the subsequent intermittent drive of the indicating device, improving the consistency and repeatability of the output angular displacement.

[0034] In the intermediate transmission stage, this embodiment uses an intermittent gear assembly 200 to change continuous rotation into segmented output. Specifically, intermittent gear I 210 and intermittent gear II 220 mesh and drive each other during the opening and closing operations, so that the output no longer rotates continuously, but generates a limited angle rotation at the operation node, so that each opening or closing operation corresponds to only one specific angular displacement change.

[0035] This intermittent characteristic structurally limits the repeated display of the same indicator, making the movement trajectory of the indicator dial respond in steps, reducing the situation where "the same indicator passes through the observation window multiple times" in traditional continuous structures. In this way, when the linkage transmission mechanism is not fully in place, the intermittent output end will not rotate to the next stable display position prematurely, thereby reducing the risk of misjudging as "in place" and making a clearer correspondence between the display state and the actual action.

[0036] At the output end, this embodiment uses the cooperation of the indicator component 300 and the observation window 400 to visually present the angular displacement changes in the transmission chain. The fixed connection between the indicator shaft 310 and the indicator disk 320 ensures the synchronicity of the angular displacement transmission, while the observation window is mounted on the outer end cover 500, making the display position fixed and the reading angle consistent. The single angular displacement output by the intermittent gear assembly 200 is used to display the opening and closing states in the observation window 400.

[0037] During use, the operator can intuitively judge the current status simply by looking through the observation window 400, without the need for repeated confirmation or comparison, thereby helping to improve the accuracy and response efficiency of the operation. The indicating device in this embodiment, through this structural arrangement, combines the steady-state transmission on the input side, the intermittent output in the middle section, and the fixed display at the end to form a coordinated operation, enabling the entire device to achieve both opening and closing status indication and good mechanical response characteristics and reliable status identification.

[0038] like Figure 4 As shown, in some embodiments, the intermittent gear assembly 200 includes an intermittent gear I 210 coaxially mounted with the spur gear 201 and an intermittent gear II 220 meshing with the intermittent gear I 210.

[0039] The intermittent gear I210 has two intermittent drive tooth segments 211 spaced circumferentially on its circumference, and a non-meshing arc area 212 is provided between two adjacent intermittent drive tooth segments 211.

[0040] The intermittent gear II 220 is provided with a meshing groove 221 that mates with the intermittent drive tooth segment 211 and a resting arc surface 222 corresponding to the non-meshing arc area 212.

[0041] When the intermittent gear I 210 rotates under the drive of the spur gear 201, the two intermittent drive gear segments 211 can respectively insert into the meshing groove 221 during the opening and closing actions of the GIS linkage transmission mechanism, and drive the intermittent gear II 220 to rotate intermittently for output.

[0042] In this embodiment, the intermittent gear assembly 200 employs a structure consisting of two meshing intermittent gears. The circumference of intermittent gear I 210 retains only two intermittent drive tooth segments 211 distributed at appropriate angular positions, with a smooth non-meshing arc region 212 between the two segments. This structure ensures that intermittent gear II 220 is only driven to rotate when the intermittent drive tooth segments 211 mesh with their meshing grooves 221, remaining stationary during the non-meshing phase. Because there is a driving and stopping process within a complete transmission cycle, the system can naturally eliminate minor vibrations caused by gear meshing clearance in the non-meshing range, and tooth surface meshing errors are less likely to accumulate at the output end. This results in a more uniform movement rhythm for the output shaft, with each rotation starting from a relatively definite position and ending stably at a fixed angular stopping position, thereby improving output angle repeatability and reducing cumulative deviations caused by transmission chain clearance or elastic deformation.

[0043] When intermittent gear I 210 is driven to rotate by spur gear 201, its two intermittent drive tooth segments 211 correspond to the two stages of the GIS linkage transmission mechanism in the opening and closing actions, respectively. When a tooth segment enters the meshing groove 221 of intermittent gear II 220, it drives intermittent gear II to produce a controlled angular rotation. During the non-meshing stage between the two tooth segments, intermittent gear II remains stationary. This periodic drive and pause coordination ensures that the rotation of the external indicating component 300 occurs only at the two nodes of opening and closing, avoiding the phenomenon of multiple passes through the observation window caused by continuous rotation. Due to the pause characteristics brought about by the non-meshing interval, the indicating disk 320 can maintain a relatively stable display position without jitter or intermediate false displays. This allows the markings in the observation window 400 used to distinguish between opening and closing to form a clear correspondence with the actual action status, thereby reducing the risk of misjudgment and enhancing the reliability and readability of the mechanical indication in actual operation.

[0044] In some embodiments, during the opening and closing actions of the GIS linkage transmission mechanism, the intermittent gear II 220 completes an intermittent 90° rotation under each meshing drive, so that the indicator disk 320 of the indicator component 300 switches between the opening and closing states through the observation window 400. This angular indexing design establishes a one-to-one correspondence between the output motion and the opening and closing actions of the GIS linkage transmission mechanism. Since the transmission involves a fixed angle of rotation, the indicator shaft 310 and the indicator disk 320 at the output end can stably remain in a specific position after the action is completed, avoiding the angular offset phenomenon caused by inertia in a continuously rotating structure. Moreover, by limiting the rotation angle, the range of motion in the transmission process is effectively controlled, the meshing impact is relatively reduced, the system operation is more stable, and thus the repeatability accuracy of the output angular displacement is improved.

[0045] During application, the 90° intermittent rotation of the intermittent gear II220 corresponds to the display position of the indicator disk 320 in the observation window 400, reflecting the open and closed states. The operator will only see two clear display results, preventing the same indicator from appearing repeatedly in front of the observation window 400. The fixed indexing angle design also reduces the impact of manufacturing and assembly errors on the display position, making the display correspondence more stable. Furthermore, the 90° rotation angle ensures sufficient display differentiation while maintaining a relatively compact transmission structure, facilitating subsequent debugging and maintenance. Through this angle-limited intermittent output method, this embodiment establishes a clear correlation between mechanical action and display status, improving the intuitiveness and accuracy of open / closed state identification.

[0046] like Figure 5 and Figure 6 As shown, in some embodiments, the gear drive shaft 100 has an irregular structure at both ends. One end of the gear drive shaft 100 is an external thread end 102, which is used to connect with the threaded hole at the end of the main shaft 10 of the GIS linkage transmission mechanism and to be axially fixed. The other end of the gear drive shaft 100 is machined with a bearing mounting hole 101 along the axial direction. A rolling bearing 103 is fixedly installed in the bearing mounting hole 101. The outer ring of the rolling bearing 103 is fitted into the bearing mounting hole 101. The inner ring of the rolling bearing 103 is used to insert the shaft end of the intermittent gear II 220 and is supported and positioned by the rolling bearing 103. The rotation of the intermittent gear II 220 is driven by the meshing of the intermittent gear I 210. The driving gear 110 is fixedly set on the outer periphery of the gear transmission shaft 100 and is located in the axial position between the external thread end 102 and the bearing mounting hole 101.

[0047] In this embodiment, the gear drive shaft 100 adopts a unique structure design at both ends. The externally threaded end 102 is used to connect with the threaded hole of the main shaft 10 of the GIS linkage transmission mechanism, and the other end has a bearing mounting hole 101 machined along the axial direction, in which a rolling bearing 103 is installed. This structure enables the gear drive shaft 100 to achieve a stable axial fixation through a threaded connection, thereby resisting the axial load generated by repeated starts and stops during transmission and reducing the risk of loosening of the connection.

[0048] On the other hand, the rolling bearing installed in the bearing mounting hole provides stable radial support to the shaft end of the intermittent gear II220, allowing the gear to maintain a precise center of rotation during operation. This shaft end support layout results in a more uniform force distribution on the intermittent gear II220 during operation, smoother rotation, and a stable meshing state, thereby contributing to improved meshing accuracy and operational stability of the transmission system.

[0049] Furthermore, the drive gear 110 is fixedly mounted on the outer periphery of the gear drive shaft 100 and positioned midway between the external thread end 102 and the bearing mounting hole 101. This arrangement places the drive gear within the force balance range of the shaft system, allowing the transmitted torque to act on the intermittent gear I210 via a shorter path, thereby reducing torsional strain during transmission. Because the drive gear is close to both end support points, the axial and radial force distribution is more rational when transmitting loads, resulting in a more symmetrical overall force distribution and reducing the possibility of axial bending and localized uneven loading. The structure, where the drive gear transmits torque in the middle section and the rolling bearing provides support at the ends, creates a mutually constrained force system within the shaft system, thereby improving rotational accuracy and helping to maintain stable meshing. This structure maintains overall compactness while improving the dynamic balance of the shaft system and extending the service life of the transmission components.

[0050] like Figures 4-6 As shown, in some embodiments, an annular groove 104 is provided axially behind the external thread end 102 of the gear drive shaft 100, and two disc springs 105 are installed in the annular groove 104.

[0051] When the gear drive shaft 100 is connected to the threaded hole at the end of the main shaft 10 of the GIS linkage transmission mechanism through the external thread end 102, thread-locking adhesive is applied to the threaded connection. After tightening, two disc springs 105 can apply axial elastic preload to the gear drive shaft 100 to improve the stability of the gear drive connection and prevent the connection from loosening.

[0052] In existing GIS linkage transmission mechanisms, the gear drive shaft is typically directly connected to the main shaft via threads and axially fixed by tightening force. However, under prolonged operation or frequent use, the transmission system is subjected to the combined effects of periodic torque fluctuations and axial impacts, making the threaded connection prone to slight loosening. While this loosening may be difficult to detect initially, repeated loading of the transmission can lead to a gradual increase in gear meshing clearance, a decrease in transmission accuracy, and even potential misalignment of the indicator display position. Furthermore, if the threaded pair lacks elastic buffering during tightening, excessive assembly force can easily cause localized stress concentration, leading to thread damage or shaft end fatigue cracks. To address these potential issues affecting operational stability and lifespan, it is necessary to introduce structures with elastic preload and energy absorption characteristics at the connection points to achieve dynamic compensation and buffering adjustment of the connection load.

[0053] In the above embodiment, an annular groove 104 is provided behind the external thread end 102 of the gear drive shaft 100, and two disc springs 105 are installed in the annular groove. Anti-loosening adhesive is applied to the threaded connection. This structure plays a dual role of axial preload and anti-loosening in mechanical connection. The disc springs 105 installed in the annular groove 104 form a controllable elastic support. When the gear drive shaft 100 and the main shaft 10 of the GIS linkage transmission mechanism are connected and tightened through the threaded hole, the disc springs generate a continuous axial elastic force due to compression. This elastic preload can maintain a relatively stable tightening state for a long time after assembly, reducing connection loosening caused by vibration, temperature fluctuations or material springback, thereby improving the connection reliability of the threaded pair.

[0054] Furthermore, the use of anti-loosening adhesive increases frictional damping on the micro-contact surface, effectively suppressing the tendency for relative slippage between threads under vibration and repeated start-stop conditions, thus maintaining connection stability. Additionally, the disc spring 105 provides vibration absorption and buffering, allowing the gear drive shaft 100 to share some energy under cyclic impact loads, reducing fatigue stress accumulation at the thread ends. Through the synergistic effect of the elastic element and the anti-loosening adhesive, the entire connection structure exhibits good stability during long-term operation, avoiding transmission errors caused by loosening and reducing the frequency of subsequent maintenance. Overall, this design helps improve the durability and service life of the connection parts without increasing structural complexity.

[0055] In some embodiments, two disc springs 105 are installed in the annular groove 104 in a reverse-stacked assembly with concave surfaces facing each other. When the threaded connection is tight, the two disc springs 105 are in a partially compressed state. When the gear drive shaft 100 experiences axial displacement due to vibration or temperature changes during operation, the two disc springs 105 automatically compensate for the threaded connection gap through the nonlinear elastic deformation characteristics of the reverse-stacked structure. During the compensation process, they continuously apply a reverse elastic force to the gear drive shaft 100 to form a dynamic anti-loosening and self-resetting retaining effect.

[0056] Specifically, in this embodiment, two disc springs 105 are installed in the annular groove 104 in a reverse stacking manner with their concave surfaces facing each other, forming a symmetrical elastic structure. This arrangement allows the disc springs 105 to deform in opposite directions when subjected to axial loads, thereby providing a more uniform elastic force over a larger stroke range. Compared with a single disc spring or a unidirectional stacking structure, the reverse stacking method can slow down the rate at which the elastic force changes with displacement, making the preload adjustment during assembly more gentle. In this way, after the threaded connection is tightened, the drive shaft can still maintain a relatively stable axial clamping force when the force state changes, reducing the connection loosening caused by load fluctuations.

[0057] Meanwhile, the counter-stacked disc springs effectively absorb and buffer energy under impact or vibration, dispersing the impact force of transient loads on the threaded connection and reducing the risk of localized stress concentration. This elastic fit structure creates a self-adjusting elastic connection between the gear drive shaft and the main shaft, resulting in a more stable connection under long-term operation and preventing loosening of the threaded joint. Overall, this structure maintains assembly reliability while also improving the fatigue resistance and service life of the transmission mechanism under complex operating conditions.

[0058] In traditional mechanical transmission devices, common gear transmission structures rely on the housing wall or separate support components for mounting and positioning. Their transmission shafts are typically independently configured with dispersed support references. While this design can meet basic power transmission requirements, it is prone to shaft position changes due to insufficient support rigidity or assembly deviations during long-term operation or under fluctuating loads, leading to unstable meshing clearances. Even slight deviations in the gear meshing center distance can cause uneven stress on the tooth surfaces during engagement and disengagement, resulting in impacts, noise, and tooth wear. Especially under high-frequency operation or repeated start-stop conditions, these misalignments accumulate, leading to decreased meshing accuracy and unstable transmission. Furthermore, because each transmission shaft is often positioned on different mounting surfaces, lacking a unified structural reference, the parallelism and relative position of the axes are difficult to maintain consistently over time. When changes in force direction or temperature cause structural deformation, the meshing relationship between gears will subtly change, affecting the accurate transmission of rotation angles. For mechanical indicating mechanisms that require precise reflection of operational status through changes in angular displacement, such deviations not only cause display lag or jitter but may also lead to inconsistencies between the displayed status and the actual position after multiple actions. This phenomenon is particularly pronounced in linkage transmission devices. Therefore, it is necessary to optimize the installation method and support structure of the transmission shaft system to obtain more stable meshing conditions and more reliable angular transmission accuracy. Based on this, this application also makes the following improvements: like Figure 4 , Figure 7 and Figure 9 As shown, in some embodiments, the intermittent gear assembly 200 further includes a mounting plate 250, a first bearing assembly 260, a second bearing assembly 270, a drive shaft 230 for mounting intermittent gear I 210, and an output shaft 240 for mounting intermittent gear II 220.

[0059] The drive shaft 230 and the output shaft 240 are arranged in parallel and are respectively connected to the mounting plate 250 through the first bearing assembly 260 and the second bearing assembly 270.

[0060] The output shaft 240 is fixedly connected to the indicator shaft 310 and is used to transmit the rotation of the gear drive shaft 100 to the indicator assembly 300 via the intermittent gear assembly 200. At the other end of the output shaft 240, the end of the output shaft 240 is connected to the rolling bearing 103 in the bearing mounting hole 101.

[0061] One end of the drive shaft 230 is fixedly connected to the spur gear 201, and the spur gear 201 meshes with the intermittent gear I210 for transmission.

[0062] like Figure 4 and Figure 9 As shown, the first bearing assembly 260 and the second bearing assembly 270 are mounted on the mounting plate 250, and the output end of the drive shaft 230 is connected to the first bearing assembly 260, and the output end of the output shaft 240 is connected to the second bearing assembly 270. Both the first bearing assembly 260 and the second bearing assembly 270 are composed of two bearings arranged one in front of the other.

[0063] In this embodiment, the intermittent gear assembly 200 is provided with a mounting plate 250, which arranges the drive shaft 230 and output shaft 240 parallel to each other. The drive shaft 230 and output shaft 240 are respectively mounted on the mounting plate 250 via a first bearing assembly 260 and a second bearing assembly 270. The mounting plate 250 provides a unified mounting reference for the two shafts, ensuring stable parallelism and center distance between the drive shaft 230 and output shaft 240. This results in a fixed spatial relationship between intermittent gear I 210 and intermittent gear II 220 during meshing. This arrangement effectively reduces gear meshing deviations caused by assembly errors or load deformation during operation, making the transmission process smoother, reducing meshing noise and tooth surface wear, and improving the operational stability of the intermittent transmission system.

[0064] In the power transmission path, the drive shaft 230 is fixedly connected to the spur gear 201, transmitting power from the gear transmission shaft 100 to the intermittent gear I 210, and then outputting it to the output shaft 240 via the intermittent gear II 220. The output shaft 240 then drives the indicator shaft 310 to rotate. This transmission path constitutes a continuous mechanical transmission chain from the input end to the display end, enabling intermittent motion to be accurately reflected on the indicator component 300. Through the discrete transmission of power by the intermittent gear II 220, the output action only produces one controlled rotation during each opening or closing process, thus ensuring a clear correspondence between the display angle of the indicator panel 320 and the action state of the transmission mechanism, which helps to improve the accuracy of action feedback and the reliability of the indicator display.

[0065] Furthermore, both the first bearing assembly 260 and the second bearing assembly 270 employ a front-to-back dual-bearing structure, mounted on the mounting plate 250, providing bidirectional support for the drive shaft 230 and the output shaft 240. This structure possesses high positioning stiffness in both the radial and axial directions, effectively suppressing sway and misalignment during shaft operation and reducing uneven force distribution at gear meshing points. Through the shared force distribution of the front and rear bearings, the force on each shaft is more balanced, thereby reducing bearing wear and improving the overall operational smoothness and reliability of the transmission assembly. In summary, the coordinated operation of the mounting plate 250, the parallel dual-shaft system, and the dual-bearing support structure ensures that the intermittent gear assembly 200 exhibits excellent structural stiffness, motion accuracy, and long-term stability, providing a solid foundation for the reliable operation of the entire mechanical indicating device.

[0066] like Figure 7 and Figure 8 As shown, in some embodiments, the indicator disc 320 has a bowl-shaped structure, with a connecting rod 323 disposed at the center of its inner surface. The indicator disc 320 is fixedly connected to the indicator shaft 310 via the connecting rod 323 and a countersunk screw 324. The connecting rod 323 has a through hole in the axial direction into which the countersunk screw 324 can be screwed, so that the countersunk screw 324 can be screwed in from the outside of the indicator disc 320 to connect the connecting rod 323 to the indicator shaft 310.

[0067] The outer surface of the indicator panel 320 is divided into an open marking area 321 and a closed marking area 322 along the circumference. The open marking area 321 and the closed marking area 322 are visually distinguished by different colors, patterns or text.

[0068] The observation window 400 is provided with a transparent observation area 410. When the GIS linkage transmission mechanism is in the open or closed state, the open marking area 321 or the closed marking area 322 can be exposed through the transparent observation area 410 respectively, so that the operator can intuitively identify the open or closed state of the GIS linkage transmission mechanism.

[0069] In this embodiment, the indicator disc 320 adopts a bowl-shaped structure design, with a connecting rod 323 located in the center, and is fixedly connected to the indicator shaft 310 by countersunk screws 324. This bowl-shaped configuration of the indicator disc 320 provides better mechanical resistance to deformation and reduces axial displacement under long-term vibration or external forces, helping to maintain coaxial accuracy of rotation. Its shape also reduces interference caused by dust accumulation and light reflection, ensuring high readability of the displayed markings under different lighting conditions, thus achieving clearer visual identification in complex environments such as outdoors or substations.

[0070] Furthermore, in this embodiment, the outer surface of the indicator panel 320 is divided into an open marking area 321 and an closed marking area 322 along the circumferential direction, and these are distinguished by different colors, patterns, or text, allowing the operator to quickly identify the operating status of the equipment. This design avoids the problems of blurred markings and low distinguishability of traditional flat indicator panels, improving the intuitiveness and reading efficiency of operation. When used in conjunction with the transparent observation area 410 on the observation window 400, the indicator panel 320 only displays the corresponding marking area in the transparent observation area 410 when the circuit is open or closed, thereby achieving a clear display of a single status and reducing the risk of misjudgment caused by angle deviation or insufficient contrast of the marking area. Through the coordinated design of the bowl-shaped structure of the indicator panel 320, the partition markings, and the transparent window of the observation window 400, this embodiment demonstrates good performance in terms of visual identification, safe operation, and long-term reliability.

[0071] In this embodiment, the indicator disc 320 is connected to the indicator shaft 310 via a connecting rod 323 located at its center. This structure differs from traditional methods that involve direct fastening or offset mounting on the back of the disc. The connecting rod 323 concentrates the connecting force from the center of the disc surface towards the shaft center, thereby reducing the impact of eccentric torque on the disc body. With this arrangement, the indicator disc 320 experiences more uniform force during rotation, reducing the risk of disc tilting or slight swaying, and resulting in a more stable rotational posture.

[0072] Furthermore, the connecting rod 323, acting as an independent intermediate connector, provides axial positioning buffer during assembly, preventing the tightening force of the countersunk screw 324 from directly acting on the disc itself, thus reducing stress concentration on the disc surface and the possibility of long-term deformation. This design not only helps extend the service life of the indicator disc 320 but also improves the rotational coaxiality of the indicator shaft 310, thereby enhancing the repeatability of the display angle. Compared to conventional rigid direct fixing methods, this central connecting rod connection is easier to assemble and adjust, and is less prone to loosening during long-term operation or under vibration, playing a positive role in the stable display of the mechanical indicating device.

[0073] Optionally, such as Figure 7 and Figure 8As shown, the outer end of the indicator shaft 310 is machined with a square insert groove along the axial direction, and the bottom of the insert groove is provided with a connecting hole for engaging with the countersunk screw 324. One end of the connecting rod 323 at the center of the indicator disc 320 is machined into a square protrusion that conforms to the insert groove. During assembly, the square protrusion is first inserted into the square insert groove to form a surface contact anti-rotation fit, and then the through hole in the connecting rod 323 is aligned coaxially with the connecting hole of the indicator shaft 310. Finally, the countersunk screw 324 is screwed in from the outside for fastening. This structure restricts relative rotation through the positioning fit of the "square protrusion-square insert groove" and provides axial clamping force through the countersunk screw 324 to achieve reliable fixation. This structure has good anti-loosening performance under long-term operation or vibration conditions, and can maintain the coaxial fit accuracy between the indicator shaft 310 and the indicator disc 320, avoiding displacement of the display position.

[0074] like Figure 2 and Figure 3 As shown, in some embodiments, the outer end cover 500 is fixedly installed to the end of the GIS linkage transmission housing 20 by screws.

[0075] The outer end cover 500 has a circular hole 501 in the middle so that the indicator shaft 310 can pass through and connect to the indicator disk 320.

[0076] The observation window 400 is fixedly mounted on the outer surface of the outer end cover 500 by screws, and a silicone rubber gasket 420 is provided between the observation window 400 and the outer end cover 500. The silicone rubber gasket 420 is provided to achieve a sealed connection between the observation window 400 and the outer end cover 500, preventing dust and moisture from entering the interior of the GIS linkage transmission housing 20.

[0077] In this embodiment, the outer end cover 500 is fixedly installed at the end of the GIS linkage transmission housing 20 by screws, forming a stable mechanical connection. The screw locking method can maintain high assembly reliability during long-term operation and reduce the risk of loosening caused by vibration or thermal expansion and contraction. A circular hole 501 is opened in the middle of the outer end cover 500, providing a channel for the indicator shaft 310 to pass through. This allows the indicator shaft 310 to maintain good coaxiality when connected to the indicator disk 320, thereby reducing friction and jamming caused by eccentric movement, and ensuring the smooth rotation of the indicator disk 320 and the accuracy of position indication.

[0078] Furthermore, in this embodiment, the observation window 400 is fixedly mounted on the outer surface of the outer end cover 500, and a silicone rubber pad 420 is placed between the two, forming a structure that combines protection and cushioning. The silicone rubber pad 420, when compressed, provides a seal, preventing the entry of dust, moisture, and fine particles, thus preventing contamination of internal gears and indicator components and affecting the display effect. Simultaneously, the flexibility of the silicone rubber pad 420 can absorb minor deformations caused by external impacts or temperature changes. Through this combination of installation and sealing design, a high level of sealing and protection is achieved between the outer end cover 500 and the observation window 400, enabling the indicator device to operate stably in high humidity, high dust, or outdoor environments, while maintaining the clarity of the display window and the long-term operational reliability of the device.

[0079] In addition, this application embodiment also provides a mechanical indication method for the end of a GIS connection mechanism based on intermittent gear drive. This mechanical indication method for the end of a GIS connection mechanism based on intermittent gear drive uses the mechanical indication device provided in the above-mentioned embodiment of this application. The indication method specifically includes the following steps: S1. When the GIS linkage transmission mechanism performs the opening or closing action, the main shaft 10 of the GIS linkage transmission mechanism generates rotational motion under the driving action, and transmits the rotational motion to the intermittent gear assembly 200 through the gear transmission shaft 100. S2. By using the drive gear 110 on the gear transmission shaft 100 to mesh with the spur gear 201 at the input end of the intermittent gear assembly 200, the input speed is reduced according to a predetermined transmission ratio. S3. The intermittent gear assembly 200 converts the decelerated rotary motion into intermittent output through intermittent gear transmission, so as to drive the indicator assembly 300 to complete one intermittent rotation in each transmission cycle; S4. During the rotation of the indicator component 300, the indicator disk 320 is aligned with the display position of the open or closed state. The display position of the indicator disk 320 is observed through the observation window 400 provided on the outer end cover 500 to determine whether the GIS linkage transmission mechanism is currently in the open or closed state.

[0080] In existing GIS equipment, end-point mechanical indicators often use continuous rotation or direct gear linkage for status feedback. Due to the long transmission chain and accumulated backlash between each stage of the mechanism, there is often a slight lag or overshoot between the spindle movement and the rotation of the display end, resulting in the displayed position not strictly corresponding to the actual open / closed state. In some structures, even with the addition of limiters to restrict the rotation angle, it is difficult to eliminate repetitive displacement caused by inertial impact, gear backlash, or slight vibration, making the display results prone to deviation. After long-term operation, this deviation can gradually amplify, causing display lag or misjudgment, which inconveniences maintenance personnel in judging the status. In addition, traditional continuous display mechanisms maintain almost constant rotational motion during operation, lacking a stable intermediate state, making it difficult to accurately identify single open / closed actions, and also unfavorable for maintaining long-term display stability in high-vibration and high-humidity environments.

[0081] To address the aforementioned issues, this embodiment proposes the mechanical indication method based on intermittent gear drive, as described in this application. By introducing an intermittent gear assembly into the transmission system, the input rotation is transformed into segmented outputs between specific action nodes, thereby establishing a clear correspondence between the action process and the display result. This improvement is not a simple gear replacement, but rather a redesign of the mechanical coupling between rotation and display in the transmission control logic. This allows the display end to obtain an independent, stable, and non-overlapping display position after each opening and closing operation. This structural design solves the angle reset and state repetition problems that are easily overlooked in traditional continuous transmission indication methods, laying the foundation for intermittent drive and step-by-step display in subsequent method steps.

[0082] In this embodiment, the mechanical indication method utilizes the step-by-step transmission characteristics of intermittent gears to establish a clear mechanical correspondence between the rotational motion of the GIS linkage transmission mechanism and the angular displacement change of the end display device. When the GIS linkage transmission mechanism performs a circuit breaker opening or closing operation, the rotation of the GIS linkage transmission mechanism is transmitted to the intermittent gear assembly 200 via the gear transmission shaft 100, and the output is reduced in speed through the meshing of the drive gear 110 and the spur gear 201. This deceleration process helps to reduce the inertial impact caused by the input speed, making the power transmitted to the intermittent gear assembly 200 more stable, thereby improving the accuracy and stability of subsequent intermittent transmission.

[0083] The intermittent gear assembly 200 converts continuous rotary motion into segmented intermittent output during transmission, ensuring that each opening or closing action corresponds to only one controlled angular rotation. This structural design establishes a one-to-one correspondence between the operational state and the displayed state at the mechanical level, avoiding repetitive display issues caused by overtravel or intermediate stops. The indicator panel 320 completes a limited angular rotation under the action of the intermittent gear output and accurately stops at the opening or closing position, forming a clear visual display in conjunction with the observation window 400 on the outer end cover 500. The operator can directly read the current status of the equipment through the observation window without additional comparison, thereby improving the intuitiveness and accuracy of status identification.

[0084] Overall, this embodiment organically combines rotary deceleration transmission, intermittent output, and a fixed display structure to ensure good consistency between mechanical actions and display positions in terms of angular changes. This method reduces display deviations caused by inertia, vibration, or gear meshing errors, enhances the reliability and repeatability of the mechanical indicating device during opening and closing processes, and is suitable for GIS linkage systems with high requirements for display accuracy and mechanical stability.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A mechanical indicating device at the end of a GIS connection mechanism based on intermittent gear drive, characterized in that, It includes a gear drive shaft, an intermittent gear assembly driven by the gear drive shaft, an indicator component connected to the output end of the intermittent gear assembly, and an observation window for displaying the opening and closing status. The gear drive shaft is connected to the end of the main shaft of the GIS linkage transmission mechanism, which is located in the GIS linkage transmission box. A drive gear is fixedly installed on the gear drive shaft. The drive gear meshes with a spur gear located at the input end of the intermittent gear assembly to form a first-stage reduction transmission mechanism, which is used to reduce the rotational motion of the main shaft of the GIS linkage transmission mechanism by a predetermined transmission ratio and then transmit it to the intermittent gear assembly to reduce the output angular velocity. The intermittent gear assembly adopts a double intermittent gear combination structure, which is used to convert the reduction output of the spur gear into an intermittent rotational output, so as to drive the indicator component to rotate intermittently at a predetermined angle; The indicating component includes an indicating shaft connected to the output end of the intermittent gear assembly, and the other end of the indicating shaft is equipped with an indicating panel for displaying the closed and open states of the GIS linkage transmission mechanism. The observation window is fixedly installed on the outer end cover of the GIS linkage transmission box, and is used in conjunction with the indicator panel to allow the operator to visually determine the opening and closing status of the GIS linkage transmission mechanism from the outside.

2. The end mechanical indicating device of the GIS connection mechanism based on intermittent gear drive according to claim 1, characterized in that, The intermittent gear assembly includes an intermittent gear I coaxially mounted with the spur gear and an intermittent gear II meshing with the intermittent gear I; The intermittent gear I has two intermittent drive tooth segments spaced circumferentially on its circumference, and a non-meshing arc area is provided between the two adjacent intermittent drive tooth segments. The intermittent gear II is provided with a meshing groove that mates with the intermittent drive tooth segment and a resting arc surface corresponding to the non-meshing arc area; When the intermittent gear I rotates under the drive of the spur gear, the two intermittent drive gear segments can be inserted into the meshing groove during the opening and closing actions of the GIS linkage transmission mechanism, and drive the intermittent gear II to rotate and output intermittently.

3. The end mechanical indicating device of the GIS connection mechanism based on intermittent gear drive according to claim 2, characterized in that, When the GIS linkage transmission mechanism performs the opening and closing actions, the intermittent gear II completes an intermittent rotation of 90° under each meshing drive, so that the indicator panel of the indicator component switches the display status between the opening and closing states through the observation window.

4. The end mechanical indicating device of the GIS connection mechanism based on intermittent gear drive according to claim 2 or 3, characterized in that, The gear drive shaft has an irregular structure at both ends. One end of the gear drive shaft is an external thread end, which is used to connect with the threaded hole at the end of the main shaft of the GIS linkage transmission mechanism and to fix it axially. The other end of the gear drive shaft is machined with a bearing mounting hole along the axial direction. A rolling bearing is fixedly assembled in the bearing mounting hole. The outer ring of the rolling bearing is fitted into the bearing mounting hole. The inner ring of the rolling bearing is used to insert the shaft end of the intermittent gear II and is supported and positioned by the rolling bearing. The rotation of the intermittent gear II is driven by the meshing of the intermittent gear I. The drive gear is fixedly disposed on the outer periphery of the gear transmission shaft and located in the axial position between the external thread end and the bearing mounting hole.

5. The end mechanical indicating device of the GIS connection mechanism based on intermittent gear drive according to claim 4, characterized in that, An annular groove is provided axially behind the external thread end of the gear drive shaft, and two disc springs are installed in the annular groove. When the gear drive shaft is connected to the threaded hole at the end of the main shaft of the GIS linkage transmission mechanism through the external thread end, thread-locking adhesive is applied to the threaded connection area, and after tightening, the two disc springs can apply an axial elastic preload to the gear drive shaft to improve the stability of the gear drive connection and prevent the connection from loosening.

6. The end mechanical indicating device of the GIS connection mechanism based on intermittent gear drive according to claim 5, characterized in that, The two disc springs are installed in the annular groove in a reverse stacking assembly with their concave surfaces facing each other.

7. The end mechanical indicating device of the GIS connection mechanism based on intermittent gear drive according to claim 2, characterized in that, The intermittent gear assembly also includes a mounting plate, a first bearing assembly, a second bearing assembly, a drive shaft for mounting the intermittent gear I, and an output shaft for mounting the intermittent gear II; The drive shaft is arranged parallel to the output shaft and is respectively connected to the mounting plate through the first bearing assembly and the second bearing assembly; The output shaft is fixedly connected to the indicator shaft and is used to transmit the rotation of the gear transmission shaft to the indicator assembly via the intermittent gear assembly; One end of the drive shaft is fixedly connected to a spur gear, and the spur gear meshes with the intermittent gear I for transmission. The first bearing assembly and the second bearing assembly are mounted on the mounting plate, and the output end of the drive shaft is connected to the first bearing assembly, and the output end of the output shaft is connected to the second bearing assembly. Both the first bearing assembly and the second bearing assembly consist of two bearings arranged one in front of the other.

8. The end mechanical indicating device of the GIS connection mechanism based on intermittent gear drive according to claim 1, characterized in that, The indicator disc has a bowl-shaped structure, and a connecting rod is provided at the center of its inner surface. The indicator disc is fixedly connected to the indicator shaft via the connecting rod and countersunk screws. The outer surface of the indicator panel is divided into an open marking area and an closed marking area along the circumference. The open marking area and the closed marking area are visually distinguished by different colors, patterns or text. The observation window is provided with a transparent observation area. When the GIS linkage transmission mechanism is in the open or closed state, the open or closed indicator area can be exposed through the transparent observation area, so that the operator can intuitively identify the open or closed state of the GIS linkage transmission mechanism.

9. The end mechanical indicating device of the GIS connection mechanism based on intermittent gear drive according to claim 1 or 8, characterized in that, The outer end cap is fixedly installed to the end of the GIS linkage transmission box by screws; The outer end cap has a circular hole in the middle so that the indicator shaft can pass through and connect to the indicator disc; The observation window is fixedly mounted on the outer surface of the outer end cover by screws, and a silicone rubber gasket is provided between the observation window and the outer end cover.

10. A method for end-effector mechanical indication of a GIS connection mechanism based on intermittent gear drive, characterized in that, The mechanical indicating device according to any one of claims 1 to 9, the indicating method includes the following steps: S1. When the GIS linkage transmission mechanism performs the opening or closing action, the main shaft of the GIS linkage transmission mechanism generates rotational motion under the driving action, and transmits the rotational motion to the intermittent gear assembly through the gear transmission shaft. S2. By utilizing the engagement of the driving gear on the gear transmission shaft with the spur gear at the input end of the intermittent gear assembly, the input speed is reduced according to a predetermined transmission ratio; S3. The intermittent gear assembly converts the decelerated rotational motion into intermittent output through intermittent gear transmission, so as to drive the indicator assembly to complete one intermittent rotation in each transmission cycle; S4. During the rotation of the indicator component, the indicator disk is aligned with the display position of the open or closed state. The display position of the indicator disk is observed through the observation window provided on the outer end cover to determine whether the GIS linkage transmission mechanism is currently in the open or closed state.

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