Grounding switch operating mechanism and switchgear

Abstract

The application provides a grounding switch operating mechanism and relates to the technical field of switch devices. The grounding switch operating mechanism comprises an operating shaft, a motor, a mounting seat and a fixing plate. The motor output end is connected with a driving gear. The mounting seat comprises two front and rear interval mounting plates. The mounting plate is provided with a transmission shaft capable of moving forward and backward. The transmission shaft is provided with a clutch gear. The operating shaft is provided with an output gear in transmission connection with the clutch gear. The transmission shaft moving stroke has an electric position and a manual position for making the clutch gear mesh with and separate from the driving gear. The transmission shaft front end is an operating end for connecting an operating handle. The fixing plate is provided with a through hole for the operating end to pass through or for the operating handle to pass in. The transmission shaft is axially fixed when located at the electric position and the manual position. The motor connection is cut off when the motor fails. The driving gear and the clutch gear are meshed after the motor is overhauled, and the electric operation is cut back. A switch cabinet is also provided, which comprises a grounding switch and the above grounding switch operating mechanism.

Description

Technical Field

[0001] This invention belongs to the field of switchgear technology, and in particular relates to a grounding switch operating mechanism and switch cabinet. Background Technology

[0002] Grounding switches are one of the main components of switchgear. They remain in the open state during normal switchgear operation and switch to the closed state when power lines or equipment malfunction or during routine maintenance to protect the safety of maintenance personnel. For safety, existing grounding switch operating mechanisms typically have both electric and manual operation modes. In the event of an electric fault or power outage, the grounding switch can be operated manually. However, the manual and electric operation modes of existing grounding switch operating mechanisms are linked. When manually operating the grounding switch, the motor of the operating mechanism must also be driven simultaneously, increasing the resistance during manual operation. Furthermore, if the motor jams, it can also cause manual operation to jam.

[0003] To address the aforementioned issues, Chinese invention patent CN101409172B discloses an electric operating mechanism for a grounding switch in a medium- and low-voltage switchgear. This electric operating mechanism includes an operating shaft (equivalent to an operating shaft) for switching the opening and closing of the grounding switch and a motor. A mechanism housing is connected to the operating shaft, and a motor output gear (equivalent to a drive gear) is connected to the output shaft of the motor. A gear transmission assembly driven by the motor output gear is installed inside the mechanism housing. The gear transmission assembly includes an intermediate gear meshing with the motor output gear, a clutch gear coaxial with the intermediate gear, and a moving gear (equivalent to an output gear) connected to the operating shaft. The moving gear is riveted to the operating shaft by a positioning pin, and a spring is connected between one side of the moving gear and the mechanism housing. A gear clutch mechanism is coaxially provided at one end of the operating shaft.

[0004] When the grounding switch is operated electrically, the motor output shaft drives the motor output gear to rotate, which in turn drives the intermediate gear to rotate, which in turn drives the coaxial clutch gear to rotate. The moving gear, supported by the spring, meshes with the clutch gear, which in turn drives the operating shaft to rotate to switch the grounding switch position. When there is an electric fault or power interruption and manual operation is required, an operating handle is connected to the gear clutch mechanism of the operating shaft. The operating handle pushes the gear clutch mechanism, which in turn pushes the moving gear to compress the spring, causing the moving gear to separate from the clutch gear, interrupting the transmission between the motor and the operating shaft. Then, the operating handle drives the operating shaft to rotate to switch the grounding switch position.

[0005] When the motor malfunctions, the aforementioned electric operating mechanism can disconnect the operating shaft from the motor, making manual operation easier. However, when switching back to electric operation after motor repair, the movement gear rotates during manual operation, causing it to lose engagement with the clutch gear. This necessitates disassembling the mechanism housing and reassembling the movement gear, which is very cumbersome. Furthermore, during electric operation, the movement gear relies on a spring for axial positioning, which is unreliable and prone to axial slippage, resulting in relative positional deviations between the movement gear and the clutch gear. In severe cases, this can even lead to disengagement. This is especially problematic during the testing phase of the grounding switch operating mechanism, where frequent gear rotation is required to switch the operating shaft's rotation direction and the grounding switch's position, making meshing deviations between the movement gear and the clutch gear even more likely. Summary of the Invention

[0006] The purpose of this invention is to provide a grounding switch operating mechanism to solve the technical problems of inconvenient and unreliable clutch structure in existing grounding switch operating mechanisms. Another purpose of this invention is to provide a switch cabinet to solve the same technical problems.

[0007] To achieve the above objectives, the technical solution of the grounding switch operating mechanism provided by the present invention is as follows: A grounding switch operating mechanism includes an operating shaft and a motor. A drive gear is connected to the motor output end. The mechanism also includes a mounting base and a fixing plate for fixing to a switch cabinet. The mounting base includes two mounting plates spaced apart. A drive shaft capable of moving back and forth is provided on the mounting plate. A clutch gear is mounted on the drive shaft. An output gear, which is connected to the clutch gear, is mounted on the operating shaft. During its travel, the drive shaft has an electric position for engaging the clutch gear with the drive gear and a manual position for disengaging it. One end of the drive shaft is an operating end for engaging with an operating handle. The fixing plate has a through hole for the operating end to pass through or the operating handle to pass through. The drive shaft has an axial limiting structure. The fixing plate and the mounting plate together have a limiting fit structure to limit axial movement of the drive shaft in the manual and electric positions; or the drive shaft has an axial limiting structure, and the fixing plate has a limiting fit structure for engaging with the axial limiting structure to limit axial movement of the drive shaft in the manual and electric positions.

[0008] This invention is an improved invention, and its beneficial effects are as follows: The grounding switch operating mechanism of this invention provides both electric and manual operation modes. Furthermore, in the event of an electric failure or power outage, the transmission shaft is manually moved from the electric position to the manual position, causing the clutch gear to disengage from the drive gear at the motor output end. This disengagement is maintained by the blocking action of the axial limiting structure and the limiting fit structure, thereby cutting off the connection between the motor output end and the transmission shaft. Compared to the clutch structure of existing technologies, this invention directly cuts off the connection at the motor output end, reducing manual operation resistance and facilitating smooth engagement of the drive gear and clutch gear when the motor is repaired and reinstalled, allowing for a switch back to electric operation.

[0009] As a further improvement, for cases where both the fixed plate and the mounting plate are provided with a limiting fit structure: the axial limiting structure includes one or more limiting protrusions or one or more limiting grooves, and also includes two limiting sleeves for respectively stopping and engaging with the two corresponding mounting plates in different directions. The limiting fit structure includes an axial limiting member mounted on the fixed plate for stopping and engaging with the limiting protrusion or limiting groove, and the end faces of the two mounting plates stopping and engaging with the corresponding limiting sleeves.

[0010] As a further improvement, two axial limiting members are provided, one limiting protrusion or one limiting groove, and the parts of the two axial limiting members that are used to stop and cooperate with the limiting protrusion or the limiting groove are staggered by a set distance.

[0011] As a further improvement, there is one axial limiting member and two limiting protrusions or limiting grooves, with a set distance between the two limiting protrusions or limiting grooves.

[0012] As a further improvement, for cases where the fixed plate is provided with a limiting engagement structure for cooperating with the axial limiting structure: the axial limiting structure includes two limiting protrusions or limiting grooves spaced apart by a predetermined distance, and the limiting engagement structure includes an axial limiting member mounted on the fixed plate for a stop engagement with the limiting protrusions or limiting grooves.

[0013] As a further improvement, for the case where the fixed plate is provided with a limiting engagement structure for cooperating with the axial limiting structure: the axial limiting structure includes a limiting protrusion or a limiting groove, and the limiting engagement structure includes two axial limiting members mounted on the fixed plate for a stop engagement with the limiting protrusion or the limiting groove, and the portions of the two axial limiting members for a stop engagement with the limiting protrusion or the limiting groove are staggered by a set distance.

[0014] As a further improvement, the axial limiting member is slidably mounted on the fixed plate, and the sliding direction is along the radial direction of the drive shaft. A reset elastic member is connected between the fixed plate and the axial limiting member. The elastic force direction of the reset elastic member is configured to bring the axial limiting member closer to the drive shaft when released.

[0015] As a further improvement, an intermediate shaft is mounted on the mounting base, and an intermediate gear is mounted on the intermediate shaft. The clutch gear is connected to the output gear through the intermediate gear.

[0016] As a further improvement, the tooth width of the intermediate gear is greater than that of the output gear.

[0017] A switch cabinet includes a grounding switch and a grounding switch operating mechanism. The grounding switch operating mechanism includes an operating shaft and a motor. A drive gear is connected to the output end of the motor. The grounding switch operating mechanism also includes a mounting base and a fixing plate for fixing on the switch cabinet. The mounting base includes two mounting plates spaced back and forth. A drive shaft that can move back and forth is provided on the mounting plate. A clutch gear is mounted on the drive shaft. An output gear that is driven by the clutch gear is mounted on the operating shaft. The drive shaft has an electric position that engages the clutch gear with the drive gear and a manual position that disengages it during its travel. One end of the drive shaft is an operating end for cooperating with an operating handle. The fixing plate has a through hole for the operating end to pass through or the operating handle to pass through. An axial limiting structure is provided on the drive shaft. The fixing plate and the mounting plate together have a limiting fit structure to limit the axial movement of the drive shaft in the manual and electric positions; or the drive shaft has an axial limiting structure, and the fixing plate has a limiting fit structure for cooperating with the axial limiting structure to limit the axial movement of the drive shaft in the manual and electric positions.

[0018] This invention is an improved invention, and its beneficial effects are: by setting the clutch position of the grounding switch operating mechanism at the connection point of the motor output end, it is convenient to directly disconnect the connection between the drive gear and the clutch gear at the motor output end when the motor fails, and it is also convenient to smoothly mesh the drive gear and the clutch gear when the motor is reinstalled after maintenance, making it easier to switch back to electric operation, and making the switching between manual and electric operation more convenient.

[0019] As a further improvement, for cases where both the fixed plate and the mounting plate are provided with a limiting fit structure: the axial limiting structure includes one or more limiting protrusions or one or more limiting grooves, and also includes two limiting sleeves for respectively stopping and engaging with the two corresponding mounting plates in different directions. The limiting fit structure includes an axial limiting member mounted on the fixed plate for stopping and engaging with the limiting protrusion or limiting groove, and the end faces of the two mounting plates stopping and engaging with the corresponding limiting sleeves.

[0020] As a further improvement, two axial limiting members are provided, one limiting protrusion or one limiting groove, and the parts of the two axial limiting members that are used to stop and cooperate with the limiting protrusion or the limiting groove are staggered by a set distance.

[0021] As a further improvement, there is one axial limiting member and two limiting protrusions or limiting grooves, with a set distance between the two limiting protrusions or limiting grooves.

[0022] As a further improvement, for cases where the fixed plate is provided with a limiting engagement structure for cooperating with the axial limiting structure: the axial limiting structure includes two limiting protrusions or limiting grooves spaced apart by a predetermined distance, and the limiting engagement structure includes an axial limiting member mounted on the fixed plate for a stop engagement with the limiting protrusions or limiting grooves.

[0023] As a further improvement, for the case where the fixed plate is provided with a limiting engagement structure for cooperating with the axial limiting structure: the axial limiting structure includes a limiting protrusion or a limiting groove, and the limiting engagement structure includes two axial limiting members mounted on the fixed plate for a stop engagement with the limiting protrusion or the limiting groove, and the portions of the two axial limiting members for a stop engagement with the limiting protrusion or the limiting groove are staggered by a set distance.

[0024] As a further improvement, the axial limiting member is slidably mounted on the fixed plate, and the sliding direction is along the radial direction of the drive shaft. A reset elastic member is connected between the fixed plate and the axial limiting member. The elastic force direction of the reset elastic member is configured to bring the axial limiting member closer to the drive shaft when released.

[0025] As a further improvement, an intermediate shaft is mounted on the mounting base, and an intermediate gear is mounted on the intermediate shaft. The clutch gear is connected to the output gear through the intermediate gear.

[0026] As a further improvement, the tooth width of the intermediate gear is greater than that of the output gear. Attached Figure Description

[0027] Figure 1 This is a first-view structural schematic diagram of an embodiment of the grounding switch operating mechanism of the present invention in the electrically operated state; Figure 2 This is a second-view structural schematic diagram of an embodiment of the grounding switch operating mechanism of the present invention in the electrically operated state; Figure 3 This is a third-view structural schematic diagram of an embodiment of the grounding switch operating mechanism of the present invention in the electrically operated state; Figure 4 This is a first-view structural schematic diagram of an embodiment of the grounding switch operating mechanism of the present invention in manual operation mode; Figure 5This is a second-view structural schematic diagram of an embodiment of the grounding switch operating mechanism of the present invention in manual operation mode; Figure 6 This is a third-view structural schematic diagram of an embodiment of the grounding switch operating mechanism of the present invention in manual operation mode; Figure 7 This is a schematic diagram of a second embodiment of the axial limiting structure and the limiting cooperation structure of the grounding switch operating mechanism of the present invention. Figure 8 This is a schematic diagram of a third embodiment of the axial limiting structure and the limiting cooperation structure of the grounding switch operating mechanism of the present invention. Figure 9 This is a schematic diagram of the fourth embodiment of the axial limiting structure and the limiting cooperation structure of the grounding switch operating mechanism of the present invention. Figure 10 This is a schematic diagram of the fifth embodiment of the axial limiting structure and the limiting cooperation structure of the grounding switch operating mechanism of the present invention. Figure 11 This is a schematic diagram of a sixth embodiment of the axial limiting structure and the limiting cooperation structure of the grounding switch operating mechanism of the present invention. Figure 12 This is a schematic diagram of the seventh embodiment of the axial limiting structure and the limiting cooperation structure of the grounding switch operating mechanism of the present invention. Figure 13 This is a schematic diagram of an eighth embodiment of the axial limiting structure and the limiting cooperation structure of the grounding switch operating mechanism of the present invention. Figure 14 This is a schematic diagram of embodiment nine of the axial limiting structure and the limiting cooperation structure of the grounding switch operating mechanism of the present invention. Figure 15 This is a schematic diagram of the axial limiting structure and the limiting cooperation structure of the grounding switch operating mechanism of the present invention in embodiment ten. Figure 16 This is a schematic diagram of an embodiment eleven of the axial limiting structure and the limiting cooperation structure of the grounding switch operating mechanism of the present invention.

[0028] Explanation of reference numerals in the attached figures: 1. Motor; 2. Drive gear; 3. Transmission shaft; 3-1. Limiting groove; 3-2. Limiting protrusion; 4. Mounting plate; 5. Fixing plate; 6. Manual limiting plate; 6-1. Front end plate; 6-2. Rear end plate; 7. Electric limiting plate; 8. Front limiting sleeve; 9. Intermediate gear; 10. Output gear; 11. Operating shaft; 12. Rear limiting sleeve; 13. Clutch gear; 14. Bushing; 15. Axial limiting component. Detailed Implementation

[0029] To solve the above problems, the basic technical concept of this invention is: to set up a transmission shaft that can move back and forth on the switch cabinet, and to fix a clutch gear on the transmission shaft. By manually driving the transmission shaft from the electric position to the manual position, the clutch gear and the drive gear at the output end of the motor are moved from engagement to disengagement. This allows the motor connection to be cut off when the motor fails, and the drive gear and clutch gear to be easily engaged after the motor is repaired, so as to switch back to electric operation.

[0030] The present invention will be further described in detail below with reference to the embodiments.

[0031] Specific embodiments of the grounding switch operating mechanism provided by the present invention: A grounding switch operating mechanism includes an operating shaft 11 of the grounding switch connected to a switch cabinet and a motor 1. The output end of the motor 1 is connected to a drive gear 2. An output gear 10 is fixedly connected to the operating shaft 11 of the grounding switch. The grounding operating mechanism also includes a mounting base and a fixing plate 5 for fixing to the switch cabinet. The mounting base includes two mounting plates 4 spaced apart front to back. A drive shaft 3 that can move back and forth is provided on the mounting plate 4. A clutch gear 13 is mounted on the drive shaft 3. During its travel, the drive shaft 3 has an electric position for engaging the clutch gear 13 with the drive gear 2 and a manual position for disengaging it. One end of the drive shaft 3 is an operating end for cooperating with an operating handle. The fixing plate 5 has a through hole for the operating end to pass through or the operating handle to pass through.

[0032] When the grounding switch is operated electrically, the drive shaft 3 is in the electric position. The drive motor 1 transmits the rotational power of the drive gear 2 to the output gear 10 on the operating shaft 11 through the clutch gear 13. Then, the operating shaft 11 rotates a certain angle under the drive of the output gear 10, thereby causing the grounding switch to open or close. When it is necessary to switch back to the grounding switch position, the direction of the output shaft of the motor 1 is changed, driving the operating shaft 11 to rotate in the opposite direction, or the motor 1 continues to drive the operating shaft 11 to rotate a certain angle, so as to realize the opening and closing switching of the grounding switch.

[0033] When switching to manual operation of the grounding switch, connect the operating handle to the operating end of the drive shaft 3, and push or pull the drive shaft 3 backward or forward to the manual position to disengage the clutch gear 13 from the drive gear 2. Simultaneously, disconnect the connection to the output end of the motor 1. Then, manually rotate the drive shaft 3. The clutch gear 13 on the drive shaft 3 drives the output gear 10, which in turn drives the operating shaft 11 to rotate, thus opening and closing the grounding switch. To switch back to electric operation, simply move the drive shaft 3 in the reverse direction to the electric position.

[0034] It should be noted that the operating end and the operating handle should have an anti-rotation structure so that the transmission shaft 3 can be rotated through the operating handle. Preferably, the operating end is provided with a hexagonal structure, and the operating handle is provided with an internal hexagonal groove that matches the hexagonal structure.

[0035] It should also be noted that the clutch gear 13 and the output gear 10 do not separate when the transmission shaft 3 is pushed or pulled. That is, the clutch gear 13 and the output gear 10 always remain engaged, so that the clutch gear 13 can drive the output gear 10 and the operating shaft 11 to rotate, whether in electric or manual operation, so as to realize the switching between opening and closing of the grounding switch.

[0036] To prevent the clutch gear 13 from axially slipping during manual operation of the drive shaft 3, causing the drive gear 2 to interfere with the rotation of the clutch gear 13, or to prevent the clutch gear 13 from sliding with the drive shaft 3 during electric operation, causing the drive gear 2 to separate from the clutch gear 13, an axial limiting structure is provided on the drive shaft 3, and a limiting fit structure that can cooperate with the axial limiting structure to restrict the sliding of the drive shaft 3 is provided on the fixed plate 5. Alternatively, an axial limiting structure is provided on the drive shaft 3, and a limiting fit structure that can cooperate with the axial limiting structure to restrict the sliding of the drive shaft 3 is provided on both the fixed plate 5 and the mounting plate 4.

[0037] Specifically, when the clutch gear 13 and the drive gear 2 are disengaged or engaged, the axial limiting structure and the limiting fit structure are used to keep the transmission shaft 3 axially fixed. When switching between electric and manual operation, the axial limiting structure and the limiting fit structure are axially offset so that the transmission shaft 3 can slide axially under manual operation to achieve engagement or disengagement of the clutch gear 13 and the drive gear 2.

[0038] Through the aforementioned grounding switch operating mechanism, when the motor 1 malfunctions and the grounding switch cannot be operated electrically, the transmission shaft 3 slides to drive the clutch gear 13 to slide, disengaging it from the drive gear 2 and switching to manual operation. Compared with the clutch structure of the prior art, this embodiment directly separates the drive gear 2 at the output end of the motor 1 from the clutch gear 13, thereby cutting off the connection between the motor 1 and the operating shaft 11. This embodiment reduces the resistance of manual operation and avoids the problem in the prior art where the gear at the clutch may not mesh properly when switching back to electric operation after the motor 1 has been repaired. It facilitates switching from manual to electric operation, greatly improving the convenience of switching between electric and manual operation.

[0039] Based on the above embodiments, as a preferred embodiment, this applies to the case where both the fixing plate 5 and the mounting plate 4 are provided with a limiting fit structure: such as... Figures 1-6 , Figure 8 , Figures 12-16As shown, the axial limiting structure includes one or more limiting protrusions 3-2 or one or more limiting grooves 3-1, and also includes two limiting sleeves for respectively stopping and engaging with two corresponding mounting plates 4 in different directions. The limiting engagement structure includes an axial limiting member 15 mounted on the fixed plate 5 for stopping and engaging with the limiting protrusions 3-2 or the limiting grooves 3-1, and the end faces of the two mounting plates 4 stopping and engaging with the corresponding limiting sleeves.

[0040] like Figures 1-6 As shown, the axial limiting structure includes a front limiting sleeve 8 and a rear limiting sleeve 12 mounted on the drive shaft 3, and also includes a limiting groove 3-1 mounted on the drive shaft 3. The limiting groove 3-1 is located on the front side of the two mounting plates 4, and the front limiting sleeve 8 and the rear limiting sleeve 12 are located on the outer sides of the two mounting plates 4, respectively. Figure 8 As shown, the axial limiting structure includes a front limiting sleeve 8 and a rear limiting sleeve 12 disposed on the drive shaft 3, and also includes a limiting groove 3-1 disposed on the drive shaft 3. The limiting groove 3-1 is located on the front side of the two mounting plates 4, and the front limiting sleeve 8 and the rear limiting sleeve 12 are respectively located between the two mounting plates 4.

[0041] Both of the above-mentioned axial limiting methods use two axial limiting members 15. In electric and manual operation, one axial limiting member 15 is first released, then the operating shaft 11 is moved so that the end face of the mounting plate 4 stops against the end face of the limiting sleeve. Then, the other axial limiting member 15 is inserted into the limiting groove 3-1 to axially fix the transmission shaft 3. Since the axial limiting member 15 is disengaged from the transmission shaft 3 when it moves, the limiting sleeve limits the movement distance of the transmission shaft 3. After the transmission shaft 3 is in position, it is axially fixed by the axial limiting member 15. It should be noted that the two axial limiting members 15 are spaced a set distance from the stopping parts of the limiting groove 3-1. This set distance is equal to the axial movement distance of the transmission shaft 3. The axial movement distance of the transmission shaft 3 is the distance from the position where the clutch gear 13 engages with the drive gear 2 to the position where the clutch gear 13 disengages from the drive gear 2. Figure 6 The distance between the front end face of the rear limiting sleeve 12 and the rear end face of the mounting plate 4 located on the rear side is also Figure 8 The distance between the rear end face of the middle and rear limiting sleeve 12 and the front end face of the mounting plate 4 located on the rear side.

[0042] like Figures 12-13As shown, these are all stop-fitting structures in manual operation mode. The axial limiting structure includes a front limiting sleeve 8 and a rear limiting sleeve 12 on the drive shaft 3, and also includes two limiting grooves 3-1 on the drive shaft 3. Both of the above axial limiting methods use only one axial limiting member 15. When switching from manual to electric operation, first release the axial limiting member 15 from the front limiting groove 3-1, then move the operating shaft 11 forward so that the end face of the mounting plate 4 stops against the end face of the limiting sleeve, and then insert the axial limiting member 15 into the rear limiting groove 3-1 to achieve axial fixation of the drive shaft 3. It should be noted that the two limiting grooves 3-1 are separated by a set distance, which is equal to the distance the drive shaft 3 moves axially. The distance the drive shaft 3 moves axially is the distance from the position where the clutch gear 13 engages with the drive gear 2 to the position where the clutch gear 13 disengages from the drive gear 2. Figure 12 The distance between the front end face of the rear limiting sleeve 12 and the rear end face of the mounting plate 4 located on the rear side is also Figure 13 The distance between the front end face of the front limiting sleeve 8 and the rear end face of the mounting plate 4 located on the front side.

[0043] like Figure 14 The diagram shows the stop mechanism in manual operation. The axial limiting structure includes a front limiting sleeve 8 and a rear limiting sleeve 12 mounted on the drive shaft 3. In this mode, the front limiting sleeve 8 also functions as a limiting protrusion 3-2. When switching to electric operation, first loosen the axial limiting member 15 from the front limiting sleeve 8, then move the drive shaft 3 forward until the front end face of the rear limiting sleeve 12 stops against the rear end face of the mounting plate 4 located at the rear. Then, stop the axial limiting member 15 against the rear end face of the front limiting sleeve 8. The axial positioning of the drive shaft 3 is achieved through the combined action of the limiting sleeves and the axial limiting member 15. It should be noted that the thickness of the front limiting sleeve 8 is equal to the distance the drive shaft 3 moves axially.

[0044] like Figures 15-16 The diagram shows the stop mechanism in manual operation. The axial limiting structure includes a front limiting sleeve 8 and a rear limiting sleeve 12 on the drive shaft 3, and a limiting protrusion 3-2 on the drive shaft 3. The limiting sleeves are used to stop with the mounting plate 4, and the limiting protrusion 3-2 is used to stop with the axial limiting member 15. After the axial limiting structure stops with the mounting plate 4, the axial limiting member 15 and the limiting protrusion 3-2 stop the drive shaft 3 to prevent it from retracting. When switching to electric operation, first loosen the axial limiting member 15 from the front limiting sleeve 8, then move the drive shaft 3 forward until it stops at the end face of the limiting sleeve and the mounting plate 4, and then stop the axial limiting member 15 at the rear end face of the front limiting sleeve 8. The axial positioning of the drive shaft 3 is achieved through the combined action of the limiting sleeves and the axial limiting member 15. It should be noted that the thickness of the front limiting sleeve 8 is equal to the distance the drive shaft 3 moves axially.

[0045] In other embodiments, it is not excluded that axial limiting is achieved using only one limiting protrusion 3-2 and one axial limiting member 15, such as... Figure 9 As shown, the axial limiting member 15 has two clamping grooves that mate with the limiting protrusion 3-2. By moving the transmission shaft 3, the stopping engagement of the two clamping grooves with the limiting protrusion 3-2 is switched, thereby realizing the switching between manual and electric operation modes. It should be noted that the distance between the two clamping grooves is equal to the distance that the clutch gear 13 slides with the transmission shaft 3. The distance that the clutch gear 13 slides is the distance that makes the clutch gear 13 mesh with the drive gear 2 or disengage the clutch gear 13 from the drive gear 2.

[0046] Based on the above preferred embodiment, as a more preferred embodiment, for the case where the fixing plate 5 and the mounting plate 4 are both provided with a limiting fit structure: there are two axial limiting members 15, one limiting protrusion 3-2 or one limiting groove 3-1, and the parts of the two axial limiting members 15 used to stop and fit with the limiting protrusion 3-2 or the limiting groove 3-1 are staggered by a set distance.

[0047] like Figures 1-6 As shown, the axial limiting component 15 includes an electric limiting plate 7 and a manual limiting plate 6. The distance between the electric limiting plate 7 and the manual limiting plate 6 and the part that stops the transmission shaft 3 is equal to the sliding distance of the transmission shaft 3. When switching from electric to manual operation, the manual limiting plate 6 slides down, pushing the transmission shaft 3 backward until it stops at the front limiting sleeve 8 and the mounting plate 4, and then the manual limiting plate 6 slides and engages with the limiting groove 3-1. When switching from manual to electric operation, the electric limiting plate 7 slides up, pulling the transmission shaft 3 forward until it stops at the rear stop and the mounting plate 4, and then the electric limiting plate 7 slides and engages with the limiting groove 3-1.

[0048] Figure 8 The diagram shows the stop mechanism in electric operation mode. At this time, the rear limit sleeve 12 engages with the mounting plate 4, preventing the drive shaft 3 from moving further backward. The electric limit plate 7 engages with the limit groove 3-1, and the clutch gear 13 meshes with the drive gear 2. When switching to manual operation, the electric limit plate 7 slides down, pulling the drive shaft 3 forward until the front limit sleeve 8 engages with the mounting plate 4, preventing the drive shaft 3 from moving further forward. The manual limit plate 6 engages with the limit groove 3-1, and the clutch gear 13 disengages from the drive gear 2.

[0049] Based on the above preferred embodiment, as a more preferred embodiment, for the case where the fixing plate 5 and the mounting plate 4 are both provided with a limiting fit structure: there is one axial limiting member 15, and there are two limiting protrusions 3-2 or limiting grooves 3-1, and the two limiting protrusions 3-2 or limiting grooves 3-1 are spaced a set distance apart.

[0050] Figure 12The diagram shows the stop mechanism in manual operation mode. When switching to electric operation, the axial limiting member 15 slides up, pulling the drive shaft 3 forward until the front end face of the rear limiting sleeve 12 stops and engages with the mounting plate 4. The axial limiting member 15 then enters the limiting groove 3-1 located at the rear to achieve axial fixation.

[0051] Figure 13 The diagram shows the stop mechanism in manual operation mode. When switching to electric operation, the drive shaft 3 is pulled forward until the front end face of the front limit sleeve 8 stops and engages with the mounting plate 4, and the axial limit member 15 enters the rear limit groove 3-1 to achieve axial fixation.

[0052] Based on the above embodiments, as a preferred embodiment, for the case where the fixed plate 5 is provided with a limiting engagement structure for cooperating with the axial limiting structure: the axial limiting structure includes two limiting protrusions 3-2 or limiting grooves 3-1 spaced apart by a set distance, and the limiting engagement structure includes an axial limiting member 15 installed on the fixed plate 5 for blocking and cooperating with the limiting protrusions 3-2 or limiting grooves 3-1.

[0053] like Figure 11 As shown, the axial limiting structure includes only two limiting grooves 3-1 on the drive shaft 3, and the limiting grooves 3-1 are located on the front side of the two mounting plates 4. During electric and manual operation, the axial limiting member 15 is first disengaged from one limiting groove 3-1, and then the operating shaft 11 is moved to align the axial limiting member 15 with the other limiting groove 3-1 and insert it into the other limiting groove 3-1 to achieve axial fixation of the drive shaft 3. It should be noted that the two limiting grooves 3-1 are separated by a set distance, which is equal to the axial movement distance of the drive shaft 3. The axial movement distance of the drive shaft 3 is the distance from the position where the clutch gear 13 engages with the drive gear 2 to the position where the clutch gear 13 disengages from the drive gear 2.

[0054] Based on the above embodiments, as a preferred embodiment, for the case where the fixing plate 5 is provided with a limiting engagement structure for cooperating with the axial limiting structure: the axial limiting structure includes a limiting protrusion 3-2 or a limiting groove 3-1, and the limiting engagement structure includes two axial limiting members 15 installed on the fixing plate 5 for a stop engagement with the limiting protrusion 3-2 or the limiting groove 3-1, and the portions of the two axial limiting members 15 for a stop engagement with the limiting protrusion 3-2 or the limiting groove 3-1 are staggered by a set distance.

[0055] like Figure 7 , Figure 10As shown, the axial limiting structure includes a limiting groove 3-1 or a limiting protrusion 3-2 on the transmission shaft 3. The fixing plate 5 is provided with two axial limiting members 15 that cooperate with the limiting groove 3-1 or the limiting protrusion 3-2 to achieve axial blocking. The set distance between the parts of the two axial limiting members 15 that cooperate with the limiting groove 3-1 or the limiting protrusion 3-2 is equal to the moving distance of the transmission shaft 3. The axial moving distance of the transmission shaft 3 is the distance from the position where the clutch gear 13 is engaged with the drive gear 2 to the position where the clutch gear 13 is disengaged from the drive gear 2.

[0056] Based on any of the above embodiments, as a preferred embodiment, the axial limiting member 15 is slidably connected to the fixed plate 5. When the clutch gear 13 and the drive gear 2 are disengaged or engaged, the sliding axial limiting member 15 engages with the axial limiting structure to restrict the axial sliding of the transmission shaft 3. When switching between electric and manual operation, the sliding axial limiting member 15 releases the axial limiting structure, allowing the transmission shaft 3 to slide axially under manual operation to engage or disengage the clutch gear 13 and the drive gear 2.

[0057] Specifically, the axial limiting member 15 undergoes three bends. The front end plate 6-1 of the axial limiting member 15 is slidably connected to the fixed plate 5. The rear end of the front end plate 6-1 is flush with the rear end face of the fixed plate 5, and a first bend is performed at the rear end of the front end plate 6-1 to form a first-bent plate that abuts against the rear end face of the fixed plate 5. The first-bent plate is then bent a second time away from the end of the front end plate 6-1 and extended a certain distance backward. The second-bent plate is then bent a third time to form a rear end plate 6-2 that engages with the limiting groove 3-1 or the limiting protrusion 3-2. When the limiting groove 3-1 is used, the rear end plate 6-2 has an arc-shaped groove that engages with the limiting groove 3-1. The structure of the limiting plate ensures that the axial limiting member 15 will not slide axially along the drive shaft 3, but can only slide radially along the drive shaft 3.

[0058] Specifically, the fixed plate 5 is provided with a sliding groove, and the front end plate 6-1 of the axial limiting member 15 is inserted into the sliding groove. The front end plate 6-1 serves as a manual operation part, which is connected to the fixed plate 5 via a reset elastic member. A tension spring is connected between the operation part and the through hole corresponding to the drive shaft 3 on the fixed plate 5. When it is necessary to slide the operation part, the operation part of the axial limiting member 15 is pulled up or down along the sliding groove to stretch and unfold the tension spring. After the rear end plate 6-2 of the axial limiting member 15 engages with the axial limiting structure on the drive shaft 3, the tension spring is released. Under the elastic force of the tension spring, the axial limiting member 15 moves down or up to reset. In other embodiments, the axial limiting member 15 can also be detachably installed on the fixed plate 5. When it is necessary to stop the drive shaft 3, the axial limiting member 15 can be installed on the fixed plate 5. When it is necessary to push or pull the operating shaft 11, the axial limiting member 15 can be removed.

[0059] When using two axial limiting members 15, the two axial limiting members 15 are an electric limiting plate 7 and a manual limiting plate 6, respectively, and the arc-shaped grooves of the two axial limiting members 15 are spaced apart, with the distance between them being equal to the sliding distance of the transmission plate. When switching from electric operation to manual operation, first slide the electric limiting plate 7 down to disengage from the limiting groove 3-1, then use the operating handle to push the transmission shaft 3 backward until the clutch gear 13 disengages from the drive gear 2, and then insert the manual limiting plate 6 into the limiting groove 3-1; when switching back from manual operation to electric operation, first slide the manual limiting plate 6 up to disengage from the limiting groove 3-1, then use the operating handle or other tools to pull the transmission shaft 3 forward until the clutch gear 13 engages with the drive gear 2, and then insert the electric limiting plate 7 into the limiting groove 3-1.

[0060] Based on any of the above embodiments, as a preferred embodiment, such as Figure 3 , Figure 6 As shown, an intermediate gear 9 is provided between the clutch gear 13 and the output gear 10, and the intermediate gear 9 meshes with both the clutch gear 13 and the output gear 10. The intermediate gear 9 is used to reduce the tooth width and pitch circle diameter of the clutch gear 13, reduce the resistance when the drive shaft 3 slides manually, and increase the transmission ratio between the drive gear 2 and the clutch gear 13. In other embodiments, it is not excluded to provide a gear set transmission or a worm gear transmission between the clutch gear 13 and the output gear 10, as long as it can connect the clutch gear 13 and the output gear.

[0061] Since the transmission ratio between gears is related to their diameter when the gear modules are equal, the smaller the diameter of the clutch gear 13, the larger its transmission ratio with the drive gear 2 and the output gear 10. Therefore, the pitch circle diameter of the clutch gear 13 is smaller than the pitch circle diameters of the drive gear 2 and the output gear 10, which can increase the transmission ratio between the clutch gear 13 and the drive gear 2 and the output gear 10. The clutch gear 13 is used to transmit the power of the drive gear 2 to the output gear 10. When the transmission ratio is large, the angle that the operating shaft 11 needs to rotate to open and close the circuit breaker is fixed, while the angle that the motor 1 needs to rotate is smaller. When the speed of the motor 1 is fixed, the speed of opening and closing the grounding switch can be increased.

[0062] Furthermore, bushings 14 are connected to both sides of the clutch gear 13, intermediate gear 9, and output gear 10. The bushings 14 are used to restrict axial slippage of the gears during gear meshing and to ensure the contact area during meshing. In other embodiments, it is not excluded to provide radial locking pins or compression springs between the gears and the transmission shaft 3 to restrict axial slippage of the gears, as long as axial slippage of the gears can be prevented.

[0063] Based on the above embodiments, as a preferred embodiment, such as... Figure 3 , Figure 6 As shown, the tooth width of the intermediate gear 9 is greater than that of the output gear 10. The intermediate gear 9 serves as a transitional connection between the clutch gear 13 and the output gear 10. The fact that the tooth width of the intermediate gear 9 is greater than that of the output gear 10 increases the contact area between the clutch gear 13 and the intermediate gear 9 during the movement of the clutch gear 13, thus preventing the clutch gear 13 from disengaging from the intermediate gear 9 during movement.

[0064] An embodiment of the switchgear provided by the present invention: A switch cabinet, a grounding switch, and a grounding switch operating mechanism are provided. The embodiments of the grounding switch operating mechanism are those described in any of the above embodiments of the grounding switch operating mechanism, and will not be specifically described here.

[0065] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A grounding switch operating mechanism, comprising an operating shaft and a motor, wherein a drive gear is connected to the output end of the motor, characterized in that, It also includes a mounting base and a fixing plate for fixing on the switch cabinet. The mounting base includes two mounting plates spaced back and forth. The mounting plates are provided with a drive shaft that can move back and forth. A clutch gear is mounted on the drive shaft. An output gear that is connected to the clutch gear is mounted on the operating shaft. The drive shaft has an electric position that engages the clutch gear with the drive gear and a manual position that disengages it during its travel. One end of the drive shaft is an operating end for cooperating with an operating handle. The fixing plate is provided with a through hole for the operating end to pass through or the operating handle to pass through. The drive shaft is provided with an axial limiting structure. The fixing plate and the mounting plate are jointly provided with a limiting fit structure to limit the axial movement of the drive shaft in the manual and electric positions; or the drive shaft is provided with an axial limiting structure, and the fixing plate is provided with a limiting fit structure for cooperating with the axial limiting structure to limit the axial movement of the drive shaft in the manual and electric positions.

2. The grounding switch operating mechanism according to claim 1, characterized in that, For cases where both the fixed plate and the mounting plate are provided with a limiting fit structure: the axial limiting structure includes one or more limiting protrusions or one or more limiting grooves, and also includes two limiting sleeves for respectively blocking and engaging with the two corresponding mounting plates in different directions. The limiting fit structure includes an axial limiting member mounted on the fixed plate for blocking and engaging with the limiting protrusion or limiting groove, and the end faces of the two mounting plates for blocking and engaging with the corresponding limiting sleeves.

3. The grounding switch operating mechanism according to claim 2, characterized in that, There are two axial limiting components, one limiting protrusion or one limiting groove, and the parts of the two axial limiting components that are used to stop and cooperate with the limiting protrusion or the limiting groove are staggered by a set distance.

4. The grounding switch operating mechanism according to claim 2, characterized in that, There is one axial limiting component and two limiting protrusions or limiting grooves, with a set distance between the two limiting protrusions or limiting grooves.

5. The grounding switch operating mechanism according to claim 1, characterized in that, For cases where the fixed plate is provided with a limiting engagement structure for cooperating with the axial limiting structure: the axial limiting structure includes two limiting protrusions or limiting grooves spaced at a predetermined distance, and the limiting engagement structure includes an axial limiting member mounted on the fixed plate for a stop engagement with the limiting protrusions or limiting grooves.

6. The grounding switch operating mechanism according to claim 1, characterized in that, For cases where the fixed plate is provided with a limiting engagement structure for cooperating with the axial limiting structure: the axial limiting structure includes a limiting protrusion or a limiting groove, and the limiting engagement structure includes two axial limiting members mounted on the fixed plate for a stop engagement with the limiting protrusion or the limiting groove, and the portions of the two axial limiting members for a stop engagement with the limiting protrusion or the limiting groove are staggered by a set distance.

7. The grounding switch operating mechanism according to any one of claims 2-6, characterized in that, The axial limiting member is slidably mounted on the fixed plate, and the sliding direction is along the radial direction of the drive shaft. A reset elastic member is connected between the fixed plate and the axial limiting member. The elastic force of the reset elastic member is configured to bring the axial limiting member closer to the drive shaft when released.

8. The grounding switch operating mechanism according to any one of claims 1-6, characterized in that, An intermediate shaft is mounted on the mounting base, and an intermediate gear is mounted on the intermediate shaft. The clutch gear is connected to the output gear through the intermediate gear.

9. The grounding switch operating mechanism according to claim 8, characterized in that, The tooth width of the intermediate gear is greater than that of the output gear.

10. A switchgear, comprising a grounding switch and a grounding switch operating mechanism, characterized in that, The grounding switch operating mechanism is the grounding switch operating mechanism as described in any one of claims 1-9.

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