CN114843124A - Switch electric operation opening and closing mechanism and grounding switch - Google Patents

Switch electric operation opening and closing mechanism and grounding switch Download PDF

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Publication number
CN114843124A
CN114843124A CN202210345942.8A CN202210345942A CN114843124A CN 114843124 A CN114843124 A CN 114843124A CN 202210345942 A CN202210345942 A CN 202210345942A CN 114843124 A CN114843124 A CN 114843124A
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CN
China
Prior art keywords
transmission shaft
opening
closing
gear
switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210345942.8A
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Chinese (zh)
Inventor
潘明
祁海洋
朱彦卿
蒋成博
王海燕
朱志豪
窦中萍
朱启媛
张�浩
杨委员
宋思齐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Pinggao Group Co Ltd
Electric Power Research Institute of State Grid Jiangsu Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Pinggao Group Co Ltd
Electric Power Research Institute of State Grid Jiangsu Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Pinggao Group Co Ltd, Electric Power Research Institute of State Grid Jiangsu Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN202210345942.8A priority Critical patent/CN114843124A/en
Publication of CN114843124A publication Critical patent/CN114843124A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/14—Protecting elements, switches, relays or circuit breakers

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  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)

Abstract

The invention relates to the technical field of operating devices, in particular to a transmission structure of an electric operating device. The invention aims to protect a switch electric operation opening and closing mechanism and a grounding switch, wherein the switch electric operation opening and closing mechanism comprises an opening and closing transmission shaft and a transmission shaft gear in transmission fit with the opening and closing transmission shaft, the opening and closing transmission shaft is connected with an energy storage spring through a crank arm, the energy storage spring can be compressed to store energy when the opening and closing transmission shaft rotates, one of the transmission shaft gear and the opening and closing transmission shaft is provided with a groove, the other one of the transmission shaft gear and the opening and closing transmission shaft is provided with a lug extending into the groove, and the lug can move in the groove relative to the groove; the elastic potential energy of the energy storage spring is released to drive the opening and closing transmission shaft to accelerate rotation, the lug can move for one section of stroke of the groove, in the process, the elastic potential energy releasing process of the energy storage spring cannot be blocked by the driving motor, and the problem that the existing opening and closing mechanism is not in place due to the fact that the release of the elastic potential energy of the energy storage spring is blocked easily can be solved.

Description

Switch electric operation opening and closing mechanism and grounding switch
Technical Field
The invention relates to the technical field of operating devices, in particular to a transmission structure of an electric operating device.
Background
The electric quick grounding switch can realize quick opening and closing through an operating mechanism, and the operating mechanism generally comprises a driving motor, an opening and closing transmission shaft and an energy storage spring. When the energy storage device runs, the driving motor drives the opening and closing transmission shaft to rotate, and the energy storage spring is compressed through the crank arm when the opening and closing transmission shaft rotates. The energy storage spring releases elastic potential energy after passing through a dead point, and applies torque to the opening and closing transmission shaft to enable the opening and closing transmission shaft to rotate quickly; when the switching transmission shaft rotates rapidly, the switch blade is driven to complete rapid switching-off or switching-on actions. However, when the opening and closing transmission shaft rotates rapidly, the opening and closing transmission shaft still keeps transmission connection with the motor, so that impact is caused on the motor, and faults are easy to occur.
For example, chinese patent No. CN104835674B discloses an operating mechanism and a direct-acting grounding switch using the same. The operating mechanism of the direct-acting grounding switch comprises a main shaft which is rotatably assembled on a rack, a connecting lever is fixedly connected to the main shaft, an energy storage spring is connected to the connecting lever, when the operating mechanism operates, a motor or manpower is needed to drive the main shaft to rotate clockwise, when the main shaft rotates clockwise, the connecting lever is driven to rotate clockwise, and the connecting lever compresses the energy storage spring through a pin shaft; when the energy storage spring passes through a dead point, the elastic potential energy of the energy storage spring is released to drive the crank arm to rotate quickly, and the moving contact can be driven to act quickly to complete the action of opening or closing when the crank arm rotates. When the elastic potential energy of the energy storage spring is released, the motor can be powered off under the control of a program, and meanwhile, the bidirectional overrunning clutch can separate the transmission between the main shaft and the motor, so that the direct-acting grounding switch is not easy to impact the motor when being rapidly switched on.
When the direct-acting grounding switch is used, the on-off time of the clutch is usually controlled by depending on a position detection switch and a controller. The micro switch is used for detecting the position of the crank arm and sending a signal to the controller when the energy storage spring releases elastic potential energy, and the controller is used for controlling the clutch to disconnect the power between the driving motor and the opening and closing transmission shaft. Because the clutch must be disconnected after the energy storage spring passes through the dead point, the clutch is limited by the assembly precision and the detection precision of the position detection switch, and the position detection switch is usually set to be triggered at a certain time after the energy storage spring is released during assembly, so that the driving motor is easily caused to block the release of the elastic potential energy of the energy storage spring, and the condition that the switch is not in place for opening or closing is further caused.
Disclosure of Invention
The invention aims to provide a switch electric operation opening and closing mechanism which is used for solving the problem that in the opening and closing mechanism in the prior art, the driving motor is easy to block the release of the elastic potential energy of an energy storage spring, so that the opening and closing of a switch are not in place. The invention further aims to provide the grounding switch, which is used for solving the problem that the grounding switch in the prior art is easy to cause that the driving motor blocks the release of the elastic potential energy of the energy storage spring, so that the switch is not in place.
The switch electric operation opening and closing mechanism adopts the following technical scheme:
the switch electric operation opening and closing mechanism comprises an opening and closing transmission shaft, a driving motor for driving the opening and closing transmission shaft to rotate, a clutch mechanism, a position detection switch and a controller, wherein the clutch mechanism is positioned on a transmission path of the driving motor and the opening and closing transmission shaft; a crank arm is assembled on the opening and closing transmission shaft, and an energy storage spring is connected to the crank arm; the controller can control the driving motor and the clutch mechanism, the position detection switch is used for detecting the position of the crank arm and sending a signal to the controller, one of the transmission shaft gear and the opening and closing transmission shaft is provided with a groove, and the other one of the transmission shaft gear and the opening and closing transmission shaft is provided with a convex block and a convex block which are matched with the groove, is inserted into the groove and can rotate relative to the groove along the circumferential direction of the opening and closing transmission shaft; in the circumferential direction of the opening and closing transmission shaft, the convex block is provided with a forward blocking surface and a reverse blocking surface, and the forward blocking surface and the reverse blocking surface are opposite in direction in the circumferential direction of the opening and closing transmission shaft; when the driving motor drives the opening and closing transmission shaft to rotate to store energy in the energy storage spring, one of the positive stop surface and the reverse stop surface is in stop fit with the groove in the circumferential direction of the opening and closing transmission shaft until the energy storage spring stores energy, and when the opening and closing transmission shaft rotates to the moment that the elastic potential energy of the energy storage spring begins to be released, the convex block can move in the groove relative to the groove under the action of the elastic potential energy released by the energy storage spring; when the energy storage spring starts to release elastic potential energy and drives the opening and closing transmission shaft to rotate and the driving lug moves relative to the groove, the position detection switch is triggered and sends a signal to the controller, so that the controller controls the clutch mechanism to cut off transmission of the gear set.
Has the advantages that: in the electric switch-on/off mechanism of the switch, one of the transmission shaft gear and the switch-on/off transmission shaft is provided with a groove, and the other is provided with a lug corresponding to the groove. When the driving motor drives the opening and closing transmission shaft to rotate, one blocking surface of the convex block can be in blocking fit with the groove in the circumferential direction of the opening and closing transmission shaft, at the moment, the driving motor can drive the opening and closing transmission shaft to rotate, and the energy storage spring is compressed and stored with energy when the opening and closing transmission shaft rotates. When the elastic potential energy of the energy storage spring is released, the energy storage spring extends and applies torque to the opening and closing transmission shaft through the crank arm so as to drive the opening and closing transmission shaft to rotate in an accelerated manner, and when the opening and closing transmission shaft rotates in an accelerated manner, the convex block can move for a section of stroke relative to the groove. In the process that the convex block moves relative to the groove, the elastic potential energy releasing process of the energy storage spring is not obstructed by the driving motor, and the position detection switch can be triggered and sends a signal to the controller, so that the controller controls the clutch to cut off a transmission path between the driving motor and the opening and closing transmission shaft. After the transmission path between the driving motor and the opening and closing transmission shaft is cut off, even if the projection continues to move relative to the groove until the other stop surface is in stop fit with the groove in the circumferential direction of the opening and closing transmission shaft, the driving motor cannot block the release of the elastic potential energy of the energy storage spring. Above-mentioned design makes the whole in-process of energy storage spring's elastic potential energy release can not receive driving motor's hindrance, can solve prior art's divide-shut brake mechanism and appear driving motor easily and hinder energy storage spring's elastic potential energy release, leads to the not problem in place of switch divide-shut brake.
Furthermore, the convex block is arranged on the opening and closing transmission shaft, and the groove is arranged on the transmission shaft gear. The arrangement facilitates the processing of the groove and the bump.
Furthermore, the lug and the opening and closing transmission shaft are of an integrated structure. The integrated structure design enables the connection between the opening and closing transmission shaft and the lug to be firmer.
Furthermore, divide-shut brake transmission shaft includes axis body and axle sleeve, and the axle sleeve suit is on the axis body and only changes the cooperation with the axis body, the lug sets up on the axle sleeve. The split type design of divide-shut brake transmission shaft, the processing of being convenient for, and can change the axle sleeve.
Furthermore, the shaft sleeve comprises a sleeve body, and the convex block is arranged on the end face of one side of the sleeve body. The convex block is arranged on the end surface of one side of the sleeve body, so that the space of the sleeve body in the radial direction can be saved, and the whole set of opening and closing mechanism has a more compact structure.
Furthermore, the shaft body is provided with a rotation stopping groove with a right-angled fan-shaped cross section in the axial direction, the shaft sleeve is provided with a rotation stopping block matched with the rotation stopping groove in shape, and at least one protruding block is connected with the rotation stopping block. The cross sections of the rotation stopping grooves and the rotation stopping blocks are right-angled fan-shaped, so that the assembly is convenient; at least one lug is connected together with the rotation stopping block for the axle sleeve overall structure intensity is higher, is difficult to be damaged.
Further, the groove is formed in the inner wall of the through hole of the transmission shaft gear. The groove is formed in the inner wall of the through hole of the transmission shaft gear, so that the space in the axial direction of the transmission shaft gear can be saved, and the structure of the whole mechanism is more compact.
Furthermore, the number of the convex blocks is at least two, and the grooves are arranged in one-to-one correspondence with the convex blocks. The lugs are at least two, so that the transmission of the transmission shaft gear and the opening and closing transmission shaft is more stable, and the transmission shaft gear and the opening and closing transmission shaft are not easy to damage.
Further, the gear train includes intermediate gear set and installs the input gear on driving shaft of driving motor, and intermediate gear set includes intermediate gear transmission shaft and installs first gear and the second gear on the intermediate gear transmission shaft, and first gear and input gear meshing, second gear and transmission shaft gear meshing, clutching mechanism sets up between first gear and intermediate gear transmission shaft. The clutch mechanism is arranged between the first gear and the transmission shaft of the intermediate gear, so that the whole mechanism is more compact in structure, and the space is saved.
In order to achieve the above object, the grounding switch of the present invention adopts the following solution:
the grounding switch comprises a rack, a switching-on and switching-off mechanism is arranged on the rack and comprises a switching-on and switching-off transmission shaft, a driving motor used for driving the switching-on and switching-off transmission shaft to rotate and a clutch mechanism positioned on a transmission path of the driving motor and the switching-on and switching-off transmission shaft, a driving shaft of the driving motor is in transmission fit with the switching-on and switching-off transmission shaft through a gear set, and the gear set comprises a transmission shaft gear sleeved on the switching-on and switching-off transmission shaft; a crank arm is assembled on the opening and closing transmission shaft in a rotation stopping way, and the crank arm is connected with an energy storage spring; the switch electric operation opening and closing mechanism also comprises a position detection switch and a controller, the controller can control the driving motor and the clutch mechanism, the position detection switch is used for detecting the position of the crank arm and sending a signal to the controller, one of the transmission shaft gear and the opening and closing transmission shaft is provided with a groove, the other one is provided with a convex block extending into the groove, and the convex block can move relative to the groove in the groove along the circumferential direction of the opening and closing transmission shaft; in the circumferential direction of the opening and closing transmission shaft, the convex block is provided with a forward blocking surface and a reverse blocking surface, and the forward blocking surface and the reverse blocking surface are opposite in direction in the circumferential direction of the opening and closing transmission shaft; when the driving motor drives the opening and closing transmission shaft to rotate to store energy in the energy storage spring, one of the positive stop surface and the reverse stop surface is in stop fit with the groove in the circumferential direction of the opening and closing transmission shaft until the energy storage spring stores energy, and when the opening and closing transmission shaft rotates to the moment that the elastic potential energy of the energy storage spring begins to be released, the convex block can move in the groove relative to the groove under the action of the elastic potential energy released by the energy storage spring; the position detection switch is triggered and sends a signal to the controller when the energy storage spring starts to release the elastic potential energy to drive the opening and closing transmission shaft to rotate and the convex block moves relative to the groove, so that the controller controls the clutch mechanism to cut off a transmission path between the driving motor and the opening and closing transmission shaft.
Has the advantages that: in the grounding switch, one of the transmission shaft gear and the opening and closing transmission shaft is provided with a groove, and the other is provided with a lug corresponding to the groove. When the driving motor drives the opening and closing transmission shaft to rotate, one blocking surface of the convex block can be in blocking fit with the groove in the circumferential direction of the opening and closing transmission shaft, at the moment, the driving motor can drive the opening and closing transmission shaft to rotate, and the energy storage spring is compressed and stored with energy when the opening and closing transmission shaft rotates. When the elastic potential energy of the energy storage spring is released, the energy storage spring extends and applies torque to the opening and closing transmission shaft through the crank arm so as to drive the opening and closing transmission shaft to rotate in an accelerated manner, and when the opening and closing transmission shaft rotates in an accelerated manner, the convex block can move for a section of stroke relative to the groove. In the process that the convex block moves relative to the groove, the elastic potential energy releasing process of the energy storage spring is not obstructed by the driving motor, and the position detection switch can be triggered and sends a signal to the controller, so that the controller controls the clutch to cut off a transmission path between the driving motor and the opening and closing transmission shaft. After the transmission path between the driving motor and the opening and closing transmission shaft is cut off, even if the projection continues to move relative to the groove until the other stop surface is in stop fit with the groove in the circumferential direction of the opening and closing transmission shaft, the driving motor cannot block the release of the elastic potential energy of the energy storage spring. Above-mentioned design makes the whole in-process of energy storage spring's elastic potential energy release can not receive driving motor's hindrance, can solve among the prior art earthing switch's divide-shut brake mechanism and appear driving motor easily and hinder energy storage spring's elastic potential energy release, leads to the not problem in place of switch divide-shut brake.
Furthermore, the convex block is arranged on the opening and closing transmission shaft, and the groove is arranged on the transmission shaft gear. The arrangement facilitates the processing of the groove and the bump.
Furthermore, the lug and the opening and closing transmission shaft are of an integrated structure. The integrated structure design enables the connection between the opening and closing transmission shaft and the lug to be firmer.
Furthermore, divide-shut brake transmission shaft includes axis body and axle sleeve, and the axle sleeve suit is on the axis body and only changes the cooperation with the axis body, the lug sets up on the axle sleeve. The split type design of divide-shut brake transmission shaft, the processing of being convenient for, and can change the axle sleeve.
Furthermore, the shaft sleeve comprises a sleeve body, and the convex block is arranged on the end face of one side of the sleeve body. The convex block is arranged on the end surface of one side of the sleeve body, so that the space of the sleeve body in the radial direction can be saved, and the whole set of opening and closing mechanism has a more compact structure.
Furthermore, the shaft body is provided with a rotation stopping groove with a right-angled fan-shaped section in the axial direction, the shaft sleeve is provided with a rotation stopping block matched with the rotation stopping groove in shape, and at least one protruding block is connected with the rotation stopping block. The cross sections of the rotation stopping grooves and the rotation stopping blocks are right-angled fan-shaped, so that the assembly is convenient; at least one lug is connected together with the rotation stopping block for the axle sleeve overall structure intensity is higher, is difficult to be damaged.
Further, the groove is formed in the inner wall of the through hole of the transmission shaft gear. The groove is formed in the inner wall of the through hole of the transmission shaft gear, so that the space in the axial direction of the transmission shaft gear can be saved, and the structure of the whole mechanism is more compact.
Furthermore, the number of the convex blocks is at least two, and the grooves are arranged in one-to-one correspondence with the convex blocks. The lugs are at least two, so that the transmission of the transmission shaft gear and the opening and closing transmission shaft is more stable, and the transmission shaft gear and the opening and closing transmission shaft are not easy to damage.
Further, the gear train includes intermediate gear set and installs the input gear on driving shaft of driving motor, and intermediate gear set includes intermediate gear transmission shaft and installs first gear and the second gear on the intermediate gear transmission shaft, and first gear and input gear meshing, second gear and transmission shaft gear meshing, clutching mechanism sets up between first gear and intermediate gear transmission shaft. The clutch mechanism is arranged between the first gear and the transmission shaft of the intermediate gear, so that the whole mechanism is more compact in structure, and the space is saved.
Drawings
Fig. 1 is a schematic structural view of a switching mechanism in embodiment 1 of the earthing switch of the present invention;
fig. 2 is a plan view of the opening and closing mechanism in embodiment 1 of the earthing switch of the present invention;
Fig. 3 is a side view of the opening and closing mechanism in embodiment 1 of the earthing switch of the present invention;
fig. 4 is a schematic structural view of a bushing in embodiment 1 of the earthing switch of the present invention;
fig. 5 is a side view of a bushing in embodiment 1 of the earthing switch of the present invention;
fig. 6 is a sectional view of a bushing in embodiment 1 of the earthing switch of the present invention;
fig. 7 is a side view of a drive shaft gear in embodiment 1 of the earthing switch of the present invention;
fig. 8 is a schematic view of the opening/closing mechanism before the dead point in embodiment 1 of the earthing switch of the present invention;
fig. 9 is a schematic view of the opening/closing mechanism in embodiment 1 of the earthing switch of the present invention at the dead point;
fig. 10 is a schematic view of the opening/closing mechanism after passing through the dead point in embodiment 1 of the earthing switch of the present invention;
fig. 11 is another schematic structural view of the opening/closing mechanism in embodiment 1 of the earthing switch of the present invention;
fig. 12 is a schematic structural view of a switching transmission shaft in embodiment 3 of the earthing switch of the present invention.
In the figure: 1. a switching-on and switching-off transmission shaft; 11. a shaft body; 111. a rotation stopping groove; 12. a shaft sleeve; 121. a rotation stopping block; 122. a sleeve body; 123. a bump; 1231. a positive stop face; 1232. a reverse stop face; 2. a drive motor; 3. a gear set; 31. an input gear; 32. a drive shaft gear; 321. a groove; 33. an intermediate gear set; 331. a first gear; 332. a second gear; 333. a middle gear transmission shaft; 4. a crank arm; 5. an energy storage spring; 6. a grounding disconnecting link; 7. a position detection switch; 71. a brake separating detection switch; 72. a switch-on detection switch; 81. a brake separating cam; 82. and a closing cam.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, which may be present, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, elements recited by the phrases "comprising an … …," or the like, do not exclude the presence of such elements, processes, or methods.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object provided may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be detachable or non-detachable. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
The present invention will be described in further detail with reference to examples.
Embodiment 1 of the ground switch of the present invention:
The grounding switch comprises a frame, and a switching-on and switching-off mechanism and a grounding knife switch 6 are arranged on the frame. As shown in fig. 1, 2 and 3, the switching-on/off mechanism includes a switching-on/off transmission shaft 1, the switching-on/off transmission shaft 1 is rotatably mounted on the frame, the switching-on/off transmission shaft 1 is connected with a movable contact, and the grounding switch can be switched between a switching-on position and a switching-off position in the rotation stroke of the switching-on/off transmission shaft 1.
The opening and closing mechanism further comprises a driving mechanism used for driving the opening and closing transmission shaft 1 to rotate, the driving mechanism comprises a driving motor 2 and a gear set 3, and a driving shaft of the driving motor 2 is in transmission fit with the opening and closing transmission shaft 1 through the gear set 3. Specifically, the gear set 3 includes an input gear 31 fixedly connected with the driving shaft of the driving motor 2, a transmission shaft gear 32 sleeved on the opening and closing transmission shaft 1, and an intermediate gear set 33. The intermediate gear set 33 includes a first gear 331 and a second gear 332, the first gear 331 and the second gear 332 sharing an intermediate gear drive shaft 333, the first gear 331 being in driving engagement with the input gear 31, the second gear 332 being in driving engagement with the drive shaft gear 32. The intermediate transmission gear shaft is in rotation stopping assembly with the first gear 331 through a key and a key slot, and a clutch mechanism is arranged on the intermediate transmission gear shaft 333, specifically, the key is movably assembled on the intermediate transmission gear shaft 333, and the clutch mechanism can control the key to extend into the key slot on the first gear 331 or draw out the key from the key slot. When the key is matched with the key groove, the driving path between the driving motor 2 and the opening and closing transmission shaft 1 is communicated. When the key is pulled out of the key slot, the transmission path between the driving motor 2 and the opening and closing transmission shaft 1 is disconnected.
As shown in fig. 1, 4, 5, 6, and 7, the opening/closing transmission shaft 1 includes a shaft body 11 and a shaft sleeve 12 fitted around the shaft body 11, the shaft body 11 is in rotation-stopping fit with the shaft sleeve 12, specifically, a rotation-stopping groove 111 having a right-angled sector cross section is formed in the shaft body 11 in an axial direction, a rotation-stopping block 121 having a shape adapted to the rotation-stopping groove 111 is provided in an inner hole of the shaft sleeve 12, and when the shaft sleeve 12 is fitted around the shaft body 11, the rotation-stopping groove 111 engages with the rotation-stopping block 121 to rotate the shaft sleeve 12 and the shaft body 11 synchronously.
The shaft sleeve 12 comprises a sleeve body 122, three convex blocks 123 are arranged on the end face of the sleeve body 122, the three convex blocks 123 are uniformly arranged on the end face of the sleeve body 122 in a regular triangle shape, the rotation stopping block 121 extends out along the axial direction of the shaft sleeve 12, and the extending part is fixedly connected with one of the three convex blocks 123. The transmission shaft gear 32 is sleeved on the shaft sleeve 12, specifically, three grooves 321 are arranged on an inner hole of the transmission shaft gear 32, the three grooves 321 correspond to the three lugs 123 one by one, when the transmission shaft gear 32 is sleeved on the shaft sleeve 12, the lugs 123 on the shaft sleeve 12 extend into the grooves 321 of the transmission shaft gear 32, and the lugs 123 can slide in the circumferential direction of the opening and closing transmission shaft 1 in the grooves 321. In the circumferential direction of the opening and closing transmission shaft 1, the projection 123 has a forward blocking surface 1231 and a reverse blocking surface 1232, and when the driving motor 2 drives the opening and closing transmission shaft 1 to rotate through the transmission shaft gear 32 to store energy for closing, the forward blocking surface 1231 of the projection 123 can block the groove wall of the groove 321 to drive the opening and closing transmission shaft 1 to rotate in the forward direction. When the driving motor 2 drives the opening and closing transmission shaft 1 to rotate through the transmission shaft gear 32 to perform opening and closing energy storage, the reverse blocking surface 1232 of the protrusion 123 can block the groove wall of the groove 321 to drive the opening and closing transmission shaft 1 to rotate reversely.
As shown in fig. 1, 8, 9, 10, and 11, a crank arm 4 is further fixedly connected to the opening/closing transmission shaft 1, and the crank arm 4 is rotatable with the opening/closing transmission shaft 1. Still dispose energy storage spring 5 in the frame, energy storage spring 5's one end is connected with connecting lever 4, and in connecting lever 4 along with divide-shut brake transmission shaft 1 pivoted stroke, connecting lever 4 can compress energy storage spring 5 or by energy storage spring 5 drive rotation, and the position when defining connecting lever 4 axial extending direction and energy storage spring 5 collineation is the dead point. The frame is also provided with a position detection switch 7 and a controller, the position detection switch 7 is used for detecting the position of the crank arm 4, and after the crank arm 4 rotates past a dead point, the position detection switch 7 is triggered and sends a signal to the controller. In this embodiment, as shown in fig. 11, the position detection switch 7 includes a closing detection switch 71 and an opening detection switch 72, an opening cam 81 and a closing cam 82 are mounted on the opening and closing transmission shaft for stopping rotation, the opening cam 81 is used for triggering the opening detection switch 71 to enable the opening detection switch 71 to send a signal to the controller, and the closing cam 82 is used for triggering the closing detection switch 72 to enable the closing detection switch 72 to send a signal to the controller. The controller can receive signals of the position detection switch and control the clutch mechanism, so that the clutch mechanism cuts off or conducts a transmission path between the driving motor 2 and the opening and closing transmission shaft 1.
Before the opening and closing transmission shaft 1 rotates to a dead point, power transmission can be achieved between the driving motor 2 and the opening and closing transmission shaft 1, the driving motor 2 drives the opening and closing transmission shaft 1 to rotate, and the opening and closing transmission shaft 1 drives the crank arm 4 to compress the energy storage spring 5. When the opening and closing transmission shaft 1 rotates to pass through a dead point, the elastic potential energy of the energy storage spring 5 starts to be released, and the turning arm 4 applies torque to the opening and closing transmission shaft 1 to accelerate the rotation of the opening and closing transmission shaft 1. When the opening and closing transmission shaft 1 is accelerated to rotate, the projection 123 can move for a section of stroke relative to the groove 321, and in the process that the projection 123 moves relative to the groove 321, the elastic potential energy release process of the energy storage spring 5 is not hindered by the driving motor 2. In the process that the convex block 123 moves relative to the groove 321, the position detection switch detects that the crank arm 4 passes a dead point and sends a signal to the controller, the controller controls the clutch to enable the key on the intermediate gear shaft to retract from the key groove on the first gear 331, and the transmission path between the driving motor 2 and the opening and closing transmission shaft 1 is cut off. In this embodiment, after the transmission path between the driving motor 2 and the opening/closing transmission shaft 1 is cut off, the protrusion 123 continues to move relative to the groove 321 but cannot be in blocking fit with the groove 321 again in the circumferential direction of the opening/closing transmission shaft 1 until the opening/closing transmission shaft 1 drives the grounding switch 6 to move to the opening/closing position or the opening/closing position, and the opening/closing operation is completed. In other embodiments, after the transmission path between the driving motor 2 and the opening/closing transmission shaft 1 is cut off, the protrusion 123 may continue to move relative to the groove 321 until being in blocking engagement with the groove 321 again in the circumferential direction of the opening/closing transmission shaft 1, and the driving motor does not hinder the release of the elastic potential energy of the energy storage spring 5.
The working process of the grounding switch is as follows:
when a closing signal is received, the controller controls the driving motor 2 to start rotating, the groove 321 of the transmission shaft gear 32 is in blocking fit with the forward blocking surface 1231 of the projection 123, and the driving motor 2 drives the opening and closing transmission shaft 1 to rotate. When the opening and closing transmission shaft 1 rotates, the energy storage spring 5 is compressed through the crank arm 4 to store energy. When the crank arm 4 rotates to pass through a dead point, the energy storage spring 5 starts to release elastic potential energy to drive the opening and closing transmission shaft 1 to rotate, the convex block 123 moves in the groove 321, and the elastic potential energy release process of the energy storage spring 5 cannot be hindered by the driving motor 2. Meanwhile, the position detection switch detects that the crank arm 4 passes through a dead point and sends a signal to the controller, the controller enables a transmission path between the driving motor 2 and the opening and closing transmission shaft 1 to be disconnected through the clutch mechanism, after the transmission path between the driving motor 2 and the opening and closing transmission shaft 1 is cut off, the elastic potential energy release process of the energy storage spring 5 cannot be obstructed by the driving motor 2, the bump 123 continuously moves for a certain distance relative to the groove 321 until the opening and closing transmission shaft 1 drives the grounding knife switch 6 to move to the opening and closing position, and the closing is completed.
When the brake needs to be opened after the completion of the closing, the clutch mechanism is closed, the driving path of the driving motor and the opening and closing transmission shaft is connected, and the driving motor rotates reversely to drive the energy storage spring to store energy. The principle of the opening process is the same as that of the closing process, the difference is only that the reverse stop surface of the convex block is in stop fit with the groove in the opening energy storage process of the energy storage spring, and when the energy storage spring releases elastic potential energy to drive the opening and closing transmission shaft to perform opening operation, the forward stop surface of the convex block is in stop fit with the groove, which is not described herein again.
The embodiment 2 of the earthing switch of the present invention is different from the above embodiments only in that the projection is provided on the transmission shaft gear and the groove is provided on the opening/closing transmission shaft.
The embodiment 3 of the earthing switch according to the present invention is different from the above-described embodiments only in that, as shown in fig. 12, the opening/closing transmission shaft 1 and the projection 123 are of an integral structure.
Embodiment 4 of the earthing switch of the present invention is different from the above-described embodiments only in that the projection is provided on the outer peripheral surface of the bushing.
The embodiment 5 of the earthing switch of the present invention is different from the above embodiments only in that there are two protrusions connected with the rotation stopping block.
The embodiment 6 of the earthing switch of the present invention is different from the above embodiments only in that a boss is provided on one end face of the transmission shaft gear, the inner hole of the transmission shaft gear passes through the boss portion to form a boss hole, and the groove is provided on the inner wall of the boss hole.
The embodiment 7 of the grounding switch of the present invention is different from the above embodiments only in that 1 bump is provided, and in other embodiments, the number of bumps may be 2, 4, and so on.
The embodiment 8 of the earthing switch of the present invention is different from the above-described embodiments only in that a clutch mechanism is provided between the intermediate gear transmission shaft and the second gear. In other embodiments, a clutch mechanism may also be provided between the input gear and the intermediate gear set, between the drive motor spindle and the book entry gear, etc.
The invention discloses a switch electric operation opening and closing mechanism, which comprises the following specific embodiments: the specific configuration of the switch electrically-operated opening/closing mechanism is the same as that of the opening/closing mechanism in any one of embodiments 1 to 8 described above.
Finally, although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments without departing from the inventive concept, or some of the technical features may be replaced with equivalents. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The switch electric operation opening and closing mechanism comprises an opening and closing transmission shaft (1), a driving motor (2) for driving the opening and closing transmission shaft (1) to rotate, a clutch mechanism, a position detection switch and a controller, wherein the clutch mechanism is positioned on a transmission path of the driving motor (2) and the opening and closing transmission shaft (1), a driving shaft of the driving motor (2) is in transmission fit with the opening and closing transmission shaft (1) through a gear set (3), and the gear set (3) comprises a transmission shaft gear (32) sleeved on the opening and closing transmission shaft (1); a crank arm (4) is assembled on the opening and closing transmission shaft (1), and an energy storage spring (5) is connected on the crank arm (4); the controller can control the driving motor (2) and the clutch mechanism, and the position detection switch is used for detecting the position of the crank arm (4) and sending a signal to the controller, and is characterized in that one of the transmission shaft gear (32) and the opening and closing transmission shaft (1) is provided with a groove (321), and the other one is provided with a lug (123) matched with the groove (321), and the lug (123) is inserted into the groove (321) and can rotate relative to the groove (321) along the circumferential direction of the opening and closing transmission shaft (1); in the circumferential direction of the opening and closing transmission shaft (1), the bump (123) is provided with a forward blocking surface (1231) and a reverse blocking surface (1232), and the forward blocking surface (1231) and the reverse blocking surface (1232) are opposite in direction in the circumferential direction of the opening and closing transmission shaft (1); when the driving motor (2) drives the opening and closing transmission shaft (1) to rotate to store energy for the energy storage spring (5), one of the positive stop surface and the reverse stop surface is in stop fit with the groove (321) in the circumferential direction of the opening and closing transmission shaft (1) until the energy storage of the energy storage spring (5) is finished, and when the opening and closing transmission shaft (1) rotates until the elastic potential energy of the energy storage spring (5) starts to be released, the bump (123) can move relative to the groove (321) in the groove (321) under the action of the elastic potential energy released by the energy storage spring (5); when the energy storage spring (5) starts to release elastic potential energy and drives the opening and closing transmission shaft (1) to rotate and the driving lug (123) moves relative to the groove (321), the position detection switch is triggered and sends a signal to the controller, so that the controller controls the clutch mechanism to cut off the transmission of the gear set (3).
2. An electrically operated switch on/off mechanism according to claim 1, characterized in that the projection (123) is provided on the switch on/off drive shaft (1) and the recess (321) is provided on the drive shaft gear (32).
3. An electrically operated switch-on/switch-off mechanism according to claim 2, characterized in that the projection (123) is of an integral construction with the switch-on/switch-off drive shaft (1).
4. The switch electrically operated opening and closing mechanism according to claim 2, wherein the opening and closing transmission shaft (1) comprises a shaft body (11) and a shaft sleeve (12), the shaft sleeve (12) is sleeved on the shaft body (11) and is in rotation stop fit with the shaft body (11), and the projection (123) is arranged on the shaft sleeve (12).
5. The switch electrically operated opening and closing mechanism according to claim 4, wherein said bushing (12) includes a bushing body (122), and said projection (123) is provided on one side end surface of said bushing body (122).
6. The switch electrically operated opening and closing mechanism according to claim 4, wherein the shaft body (11) is provided with a detent groove (111) having a right-angled sector cross-sectional shape in an axial direction, the sleeve (12) is provided with a detent block (121) having a shape adapted to the detent groove (111), and at least one protrusion (123) is connected to the detent block (121).
7. An electrically operated switch on/off mechanism according to any of claims 2 to 6, wherein said recess (321) is provided on the inner wall of the through hole of the transmission shaft gear (32).
8. An electrically operated switch on/off mechanism according to any one of claims 2 to 6, wherein at least two projections (123) are provided, and the recesses (321) are provided in one-to-one correspondence with the projections (123).
9. An electrically operated opening and closing mechanism of a switch according to any one of claims 2 to 6, wherein the gear train (3) comprises an intermediate gear train (33) and an input gear (31) mounted on the drive shaft of the drive motor (2), the intermediate gear train (33) comprises an intermediate gear transmission shaft (333) and a first gear (331) and a second gear (332) mounted on the intermediate gear transmission shaft (333), the first gear (331) is engaged with the input gear (31), the second gear (332) is engaged with the transmission shaft gear (32), and the clutch mechanism is disposed between the first gear (331) and the intermediate gear transmission shaft (333).
10. An earthing switch, comprising a frame, on which a switching-on/off mechanism is arranged, characterized in that the switching-on/off mechanism is a switch electrically operated switching-on/off mechanism as claimed in any one of the preceding claims 1 to 9.
CN202210345942.8A 2022-03-31 2022-03-31 Switch electric operation opening and closing mechanism and grounding switch Pending CN114843124A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210345942.8A CN114843124A (en) 2022-03-31 2022-03-31 Switch electric operation opening and closing mechanism and grounding switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210345942.8A CN114843124A (en) 2022-03-31 2022-03-31 Switch electric operation opening and closing mechanism and grounding switch

Publications (1)

Publication Number Publication Date
CN114843124A true CN114843124A (en) 2022-08-02

Family

ID=82563248

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210345942.8A Pending CN114843124A (en) 2022-03-31 2022-03-31 Switch electric operation opening and closing mechanism and grounding switch

Country Status (1)

Country Link
CN (1) CN114843124A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116944568A (en) * 2023-09-19 2023-10-27 南越建设管理有限公司 Pipeline cutting equipment for bridge construction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116944568A (en) * 2023-09-19 2023-10-27 南越建设管理有限公司 Pipeline cutting equipment for bridge construction
CN116944568B (en) * 2023-09-19 2024-02-02 南越建设管理有限公司 Pipeline cutting equipment for bridge construction

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