CN112002590B - Energy storage driving device and three-station operating mechanism applying same - Google Patents
Energy storage driving device and three-station operating mechanism applying same Download PDFInfo
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- CN112002590B CN112002590B CN202010824791.5A CN202010824791A CN112002590B CN 112002590 B CN112002590 B CN 112002590B CN 202010824791 A CN202010824791 A CN 202010824791A CN 112002590 B CN112002590 B CN 112002590B
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- 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
- H01H31/02—Details
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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
- H01H3/38—Driving mechanisms, i.e. for transmitting driving force to the contacts using spring or other flexible shaft coupling
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- 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
- H01H31/02—Details
- H01H31/04—Interlocking mechanisms
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- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
Abstract
The invention belongs to the field of mechanical operating mechanisms of high-voltage switches, and particularly relates to an energy storage driving device and a three-station operating mechanism using the same.
Description
Technical Field
The invention belongs to the field of mechanical operating mechanisms of high-voltage switches, and particularly relates to an energy storage driving device and a three-station operating mechanism applying the same.
Background
The three-station operating mechanism is provided with an isolation station, a closing station and a grounding station, and is generally applied to a switch cabinet for controlling a load switch and a grounding switch, the existing three-station operating mechanism integrates the stations on one mechanism, so that the structure of the operating mechanism is simplified, for example, chinese patent CN202384242U discloses an interlocking device of the three-station operating mechanism, the operating mechanism is provided with two operating shafts which are respectively used for controlling the operation of the isolation switch and the operation of the grounding switch, and the internal structure of the operating mechanism is also divided into an isolation switch operating component and a grounding switch operating component. Therefore, it is necessary to develop an operating mechanism which is convenient to operate and integrates isolation, closing and grounding structures.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an energy storage driving device applied to an operating mechanism.
In order to solve the technical problems, the invention adopts the following technical scheme:
the energy storage driving device is applied to the operating mechanism and comprises a driving shaft, a driving piece, two elastic elements and a scissor arm formed by hinging the middle parts of two driving arms on the driving shaft, the two elastic elements are respectively abutted against the opposite end parts of the two driving arms, the two elastic elements are compressed to store energy or reset to release energy along with the change of the opposite state of the end parts of the two driving arms, the driving piece is arranged on the inner sides of the two driving arms, and the driving piece rotates along with the driving shaft to drive the driving arms positioned on one side of the driving arm under the rotating direction of the driving piece to rotate.
The working principle of the invention is as follows: the energy storage driving device provided by the invention has a simple structure and only comprises one operating shaft, so that when the energy storage driving device is applied to an operating mechanism, the switching between the operating stations can be realized by only one driving shaft.
Furthermore, the scissor arm comprises a first driving arm and a second driving arm, the first driving arm comprises a first arm section and a second arm section which are positioned on two sides of the driving shaft, the second driving arm comprises a third arm section and a fourth arm section which are positioned on two sides of the driving shaft, the two elastic elements are respectively hinged between the first driving arm and the fourth driving arm and between the second driving arm and the third driving arm, and the driving element is provided with a first driving part positioned between the first arm section and the third arm section and a second driving part positioned between the second arm section and the fourth arm section. The shear-type structure formed by the first driving arm and the second driving arm is good in rigidity and high in stability.
Furthermore, first actuating arm and second actuating arm are equipped with two sets ofly, and elastic element and driving piece are located between two sets of first actuating arm and second actuating arm, and first actuating arm and second actuating arm set up in proper order in turn, two elastic element include first spring and second spring, the both ends of first spring are equipped with respectively with first arm section tip and the articulated first articulated seat of fourth arm section tip, the both ends of second spring are equipped with respectively with the articulated second articulated seat of second arm section tip and third arm section tip. The arrangement of the hinge joint enables the elastic element to be adjusted in angle adaptively according to the rotation of the first driving arm and the second driving arm.
Furthermore, be connected with first telescopic link between the first articulated seat at both ends, be connected with the second telescopic link between the second articulated seat at both ends, first telescopic link with the second telescopic link is along with elastic element's compression energy storage and is shrink, and along with elastic element's the release energy that resets and expand, sets up the telescopic link and can make energy storage drive arrangement's structural strength better, more reliable.
Further, first actuating arm is still including connecting the first changeover portion of first arm section and second arm section, first changeover portion with be equipped with the contained angle between first arm section and the second arm section, the second actuating arm is still including connecting the second changeover portion of third arm section and fourth arm section, the second changeover portion with be equipped with the contained angle between third arm section and the fourth arm section, first changeover portion and second changeover portion are equipped with respectively with the articulated shaft hole of driving shaft.
The invention also provides a three-station operating mechanism applying the energy storage driving device, which comprises a bracket, an output part, an unlocking part, a first locking device, a second locking device, a third locking device, a fourth locking device and the energy storage driving device, wherein the energy storage driving device is arranged on the bracket, a driving shaft is rotatably connected with the bracket, and an operating structure used for being connected with an external part for driving the driving shaft to rotate is arranged on the driving shaft.
The output piece can be arranged on the rear side of the energy storage driving device in a rotating mode around the hinge axis of the scissor arm, and a limiting portion located between the end portions of the two driving arms is arranged on the output piece, so that the output piece is driven to rotate when the driving arms abut against the limiting portion.
The first locking device, the second locking device, the third locking device and the fourth locking device are used for locking the limiting part on the corresponding operating station respectively, so that the driving shaft can be rotated to compress and store energy by the elastic element when the limiting part is locked.
The unlocking piece is driven by the driving shaft to rotate and enables the elastic element to release energy to push the limiting part when the corresponding locking device is unlocked, and the output piece is driven to rotate to switch the operation station.
Further, first to fourth locking device sets gradually along the rotation orbit of output piece, and first to fourth locking device all includes a mounting part, a joint portion of connecting the mounting part and orders about the elasticity that its swing resets, the mounting part is rotationally installed on the support, and first locking device and fourth locking device's joint portion sets up relatively, and second locking device's joint portion is towards first locking device, and third locking device's joint portion is towards fourth locking device, and each joint portion all is equipped with the pin, thereby the piece that unlocks promotes the pin in order to drive the locking device that joint portion swing unblock corresponds. Preferably, the first to fourth locking devices are 40Cr steel subjected to quenching treatment, and the locking devices provided above have high hardness and high strength.
Furthermore, waist-shaped holes which are arranged along the swing track of the locking device are respectively arranged on the support corresponding to the pins, the pins extend to the other side of the support through the waist-shaped holes, and the unlocking piece is arranged on one side of the support, which is opposite to the energy storage driving device.
Further, the unblock piece includes connecting portion and locates the relative both sides of connecting portion and is used for the ejection the trigger part of pin, connecting portion and actuating shaft are connected, the tip curve of trigger part includes the circular arc section, and locate the straight section to one side at the relative both ends of circular arc section, the circular arc section middle part is outside salient, the lateral wall of trigger part is connected to straight section one end to one side, the circular arc section is connected to the other end, straight section to one side is along with unblock piece and pin contact, it is comparatively precipitous, make the unblock piece rotate less angle and just can order about the pin to have great range of movement, unblock locking device when the summit position is arrived promptly when the top of circular arc section and pin contact, because circular arc section camber is comparatively mild, the speed that the pin removed can slow down, thereby the time of extension unblock process, make the unblock be so rush, certain reply time is provided for the operator.
In a specific embodiment, the first position is reached when the first position-limiting part is transferred between the first locking device and the fourth locking device by manipulation, the second position is reached when the first position-limiting part is transferred between the first locking device and the second locking device by manipulation, and the third position is reached when the first position-limiting part is transferred between the third locking device and the fourth locking device by manipulation.
When the unlocking piece rotates to unlock the first locking device, the first limiting part is not blocked, the first spring and the second spring reset and release energy to push the first limiting part to be separated from the first locking device and rotate clockwise, the first limiting part rotates to a position between the second locking device and the first locking device, the output piece is driven to rotate, and therefore the first station is switched to the second station.
On a second station, the driving shaft is rotated anticlockwise to drive the unlocking piece and the driving piece to rotate synchronously, the driving piece drives the first driving arm to rotate anticlockwise in the rotating process, the second driving arm pushes the second limiting part to enable the second limiting part to abut against the third locking device, the first spring and the second spring compress and store energy, when the unlocking piece rotates to unlock the third locking device, namely the second limiting part is not blocked, the first spring and the second spring reset and release energy to push the second limiting part to be separated from the third locking device and rotate anticlockwise, the first limiting part rotates anticlockwise and pushes the first locking device to rotate between the first locking device and the fourth locking device, and the output piece is driven to rotate, so that the second station is switched to the first station.
Similarly, the driving shaft rotates anticlockwise on the first station, so that the first limiting part is separated from the fourth locking device and rotates to a position between the fourth locking device and the third locking device, and the first station is switched to the third station; when the third station rotates clockwise, the second limiting part can be separated from the second locking device, so that the first limiting part rotates to a position between the first locking device and the fourth locking device, and the third station is switched to the first station. Specifically, the first station is an isolation station, the second station is a closing station, and the third station is a grounding station.
Compared with the prior art, the operating mechanism provided by the invention can realize switching among three stations by only using one driving shaft, the operating mode is convenient and rapid, the structure is simple and compact, the mechanism volume is small, the cost is lower, the self-locking capability of the operating mechanism can be improved by matching the locking device with the unlocking piece, the operating mechanism is safe and reliable, and meanwhile, the energy storage driving device adopts a couple moment driving mode realized by matching a double-spring shear type driving arm, the operation is labor-saving, the rigidity is good, the stability is high, and the stable and reliable operation of a switch is ensured.
Drawings
FIG. 1 is a perspective view of an operating mechanism;
FIG. 2 is a schematic structural diagram of the interior of the operating mechanism;
FIG. 3 is a schematic structural diagram of the stored energy drive mechanism;
FIG. 4 is an exploded view of the stored energy drive mechanism;
FIG. 5 is a schematic structural view of the operating mechanism located at an isolated station;
fig. 6 is a schematic diagram of an energy storage state of the operating mechanism switching from an isolation station to a closing station;
fig. 7 is a schematic structural view of the operating mechanism located at a closing station;
fig. 8 is a schematic diagram of an energy storage state of the operating mechanism switched from a closing station to an isolating station;
FIG. 9 is a schematic diagram of the energy storage state of the operating mechanism switching from the isolation station to the grounding station;
fig. 10 is a schematic structural view of the operating mechanism located at the grounding station;
fig. 11 is a schematic diagram of an energy storage state of the operating mechanism switching from the grounding station to the isolating station;
FIG. 12 is a schematic view of the release member when the actuator is in the isolating station;
fig. 13 is a schematic structural view of the unlocking member after the operating mechanism is switched from the isolation station to the closing station;
fig. 14 is a schematic structural view of the unlocking member after the operating mechanism is switched from the isolation station to the grounding station.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings. In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
Referring to fig. 1 and 2, the embodiment provides an energy storage driving device 3 and a three-position operating mechanism using the same, and the three-position operating mechanism includes a bracket 1, an output member 2, the energy storage driving device 3, an unlocking member 4, an indicating plate 5, a chain driving device 6 and an interlocking device 7.
Referring to fig. 2 to 5, the energy storage driving device 3 is mounted on the support 1, and includes a driving shaft 31, a driving member 32, a first driving arm 33, a second driving arm 34, a first spring 35, and a second spring 36, the driving shaft 31 is rotatably connected to the support 1, the middle portions of the first driving arm 33 and the second driving arm 34 are hinged to the driving shaft 31 to form a scissor arm, the first driving arm 33, the second driving arm 34, and the driving shaft 31 are relatively rotatable, the unlocking member 4 is disposed on the support 1 on a side opposite to the first driving arm 33 and the second driving arm 34, and the unlocking member 4 is relatively fixedly connected to the driving shaft 31.
Referring to fig. 3 and 4, the first driving arm 33 includes a first arm section 331 and a second arm section 332 located on both sides of the driving shaft 31, and a first transition section 333 connecting the first arm section 331 and the second arm section 332, the second driving arm 34 includes a third arm section 341 and a fourth arm section 342 located on both sides of the driving shaft 31, and a second transition section 343 connecting the third arm section 341 and the fourth arm section 342, the first transition section 333 is provided with an angle with the first arm section 331 and the second arm section 332, the first transition section 333 is connected with the first arm section 331 and the second arm section 332 in a circular arc transition manner, the second transition section 343 is provided with an angle with the third arm section 341 and the fourth arm section 342, the second transition section 343 is connected with the third arm section 341 and the fourth arm section 342 in a circular arc transition manner, the first transition section 333 and the second transition section 343 are respectively provided with shaft holes for the driving shaft 31 to pass through, the first driving arm 33 and the second driving arm 34 are arranged in a mirror image manner, the first transition section 333 and the second transition section 342 are connected in a circular arc transition manner, the first transition section 33 and the second transition section spring 35 are formed in a strong spring assembly manner, and a scissor type spring assembly is suitable for forming a scissor type frame for a strong moment, and a scissor type energy storage frame for a strong spring assembly manner, and a strong spring assembly method for forming a strong spring assembly for the energy storage type frame 35.
Referring to fig. 3 and 4, the driving member 32 is relatively fixedly disposed on the driving shaft 31, and is preferably integrally formed with the driving shaft 31, the driving member 32 is provided with a first driving portion 321 located between the first arm portion 331 and the third arm portion 341, and a second driving portion 322 located between the second arm portion 332 and the fourth arm portion 342, the driving member 32 and the unlocking member 4 are disposed in a staggered manner, that is, an included angle is formed between the driving member 32 and the unlocking member 4, so that the driving member 32 and the unlocking member 4 are not at the same position when they rotate, and the driving member 32 drives the driving arm located at the lower side of the rotation direction of the driving shaft 31 to rotate as the driving shaft 31 rotates.
Referring to fig. 3 to 5, two ends of the first spring 35 are respectively provided with a first hinge seat 351 hinged to the end of the first arm section 331 and the end of the fourth arm section 342, two ends of the second spring 36 are respectively provided with a second hinge seat 361 hinged to the end of the second arm section 332 and the end of the third arm section 341, the first spring 35 and the second spring 36 are compressed, stored or reset and released along with the change of the relative state of the two driving arm ends, specifically, a first telescopic rod 352 is connected between the first hinge seats 351 at the two ends, the first spring 35 is sleeved on the first telescopic rod 352, a second telescopic rod 362 is connected between the second hinge seats 361 at the two ends, the second spring 36 is sleeved on the second telescopic rod 362, the first and second telescopic rods (361 and 362) are gradually contracted along with the opposite approach of the first arm section 331 and the fourth arm section 342, meanwhile, the first and second springs (35 and 36) are compressed, stored, and released along with the opposite approach of the first arm section 331 and the fourth arm section 342, and simultaneously, the first and the second telescopic rods (361 and 362) are gradually extended along with the second arm section (342).
Referring to fig. 3 and 4, the first driving arm 33 and the second driving arm 34 are provided at intervals in two sets, the first spring 35, the second spring 36 and the driving member 32 are provided between the two sets of the first driving arm 33 and the second driving arm 34, and the first driving arm 33 and the second driving arm 34 are alternately provided in sequence. The arrangement of the first driving arm 33 and the second driving arm 34 can make the structure of the energy storage driving device 3 more stable and reliable.
Referring to fig. 2 and 5, the output member 2 is rotatably disposed on the bracket 1 at the rear side of the first and second driving arms 33 and 34 around the hinge axes of the first and second driving arms 33 and 34, and the output member 2 is rotatable relative to the driving shaft 31 and the bracket 1, and is provided with a first limit portion 21 between the first and third arm sections 331 and 341 and a second limit portion 22 between the second and fourth arm sections 332 and 342, so as to drive the output member 2 to rotate when the driving arms abut against the limit portions.
Referring to fig. 2 and 5, the bracket 1 is provided with a first locking device 11, a second locking device 12, a third locking device 13 and a fourth locking device 14 in a clockwise direction along the rotation track of the output member 2, and the first to fourth locking devices (11-14) are used for locking a limiting part on a corresponding operation station, so that the driving shaft 31 can be rotated to compress and store energy in the first spring 35 and the second spring 36 when the limiting part is locked.
Referring to fig. 5 and 12, each of the first to fourth locking devices (11-14) includes a mounting portion 111, a clamping portion 112 connected to the mounting portion 111, and an elastic restoring member 113 for urging the mounting portion to swing and restore, the elastic restoring member 113 is preferably a spring, the mounting portion 111 is rotatably mounted on the bracket 1, one side of the clamping portion 112 close to the driving shaft 31 is an arc surface, the first locking device 11 is disposed opposite to the clamping portion 112 of the fourth locking device 14, the clamping portion 112 of the second locking device 12 is disposed toward the first locking device 11, and the clamping portion 112 of the third locking device 13 is disposed toward the fourth locking device 14.
Referring to fig. 5 and 12, a pin 114 is arranged on the clamping portion 112, a waist-shaped hole 15 arranged along the moving direction of the locking device is respectively arranged on the bracket 1 corresponding to the pin 114, the pin 114 extends to one side of the bracket 1 located on the unlocking piece 4 through the waist-shaped hole 15, and the pin 114 is pushed outwards when the unlocking piece 4 rotates to drive the mounting portion 111 to rotate, so that the clamping portion 112 swings outwards to unlock the corresponding locking device. Preferably, the first to fourth locking devices are 40Cr steel subjected to quenching treatment, and the arrangement mode can improve the strength of the locking devices so as to improve the reliability of the unlocking and self-locking states. In a particular arrangement, the locking means (11-14) are detents.
Referring to fig. 5 and 12, the unlocking unit 4 is driven by the driving shaft 31 to rotate and causes the first spring 35 and the second spring 36 to release the pushing force to push the limiting portion when unlocking the corresponding locking device, so as to drive the output member 2 to rotate to switch the operation position, wherein the first limiting portion 21 reaches the isolation position when being placed between the first locking device 11 and the fourth locking device 14, the closing position when the first limiting portion 21 is being placed between the first locking device 11 and the second locking device 12, and the grounding position when the first limiting portion 21 is being placed between the third locking device 13 and the fourth locking device 14.
In a specific embodiment, unlocking member 4 includes connecting portion 42 and locates the relative both sides of connecting portion 42 and be used for the ejection pin 114 trigger portion 41, and connecting portion 42 is connected with drive shaft 31, and the tip curve of trigger portion 41 is including the circular arc section 411 that is located the middle part and locate the oblique straight section 412 at the relative both ends of circular arc section 411, and circular arc section 411 middle part is outside protruding, and the lateral wall of trigger portion 41 is connected to oblique straight section 412 one end, and circular arc section 411 is connected to the other end. The inclined straight section 412 is contacted with the pin 114 along with the rotation of the unlocking piece 4, the inclined straight section is steep, the unlocking piece 4 can drive the pin 114 to have a large moving amplitude by rotating a small angle, the locking device is unlocked when the top of the circular arc section 411 is contacted with the pin 114, namely, the clamping part 112 swings outwards to a position which does not block a limiting part, the curvature of the circular arc section 411 is gentle, the moving speed of the pin 114 can be slowed down, the time of the unlocking process is prolonged, the unlocking is not so rapid, and a certain coping time is provided for an operator. It should be noted that when the unlocking member 4 unlocks the first locking device 11 and the fourth locking device 14, the second locking device 12 and the third locking device 13 are reset to the locked state under the action of the elastic resetting member 113, and similarly, when the unlocking member 4 unlocks the second locking device 12 and the third locking device 13, the first locking device 11 and the fourth locking device 14 are reset to the locked state under the action of the elastic resetting member 113, so that the self-locking function is realized, and the accidental switching of the work stations is prevented.
Referring to fig. 12, the connecting portion 42 is provided with a limit pin 43, the bracket 1 is provided with a limit groove 16 corresponding to the limit pin 43 and arranged along the rotation track of the unlocking member 4, the limit pin 43 penetrates into the limit groove 16, preferably, the limit pin penetrating into the limit groove 16 is also arranged on one side of the first driving portion 321 close to the unlocking member 4, and the limit pin 43 is arranged to limit the rotation range of the driving shaft 31 and the unlocking member 4, so as to avoid undesirable phenomena such as jamming.
Referring to fig. 1, the chain driving device 6 includes a motor 61, a chain 62, a driving wheel 63 and a driven wheel 64, the driven wheel 64 is relatively fixedly arranged at the periphery of the driving shaft 31, the driving wheel 63 is arranged on the support 1 and is in transmission connection with the motor 61, the chain 62 is meshed with the driving wheel 63 and the driven wheel 64, and the driving device can be used for realizing the switching of the electric control stations, so that the operation is more convenient, and conditions are provided for realizing the remote control on-off state.
Referring to fig. 1 and 2, the indicating dial 5 is rotatably disposed on the driving shaft 31, the indicating dial 5 is located outside the energy storage driving device 3, the output member 2 is connected to the indicating dial 5 to drive the indicating dial 5 to rotate synchronously, and the indicating dial 5 is provided with marks of an isolation station, a closing station and a grounding station for an operator to observe the state of the current operating mechanism.
Referring to fig. 1, the interlocking device 7 includes a shielding member 71 and a top block 72, the driving shaft 31 has an operation hole 311, the top block 72 is movable up and down relative to the bracket 1 in a controlled manner, the shielding member 71 includes a shielding portion 711 for opening or closing the operation hole 311, a driving portion 712 engaged with the top block 72, and an arc-shaped connecting portion 713 connecting the shielding portion 711 and the driving portion 712, the driving portion 712 is hinged to the bracket 1 at a joint with the arc-shaped connecting portion 713, when the top block 72 moves up, the shielding member 71 is driven to swing to a side away from the driving shaft 31 to open the operation hole 311, and when the top block 72 moves down, the shielding member 71 is driven to swing to a side close to the driving shaft 31 to close the operation hole 311. The top block 72 can be linked with a cabinet door of a switch cabinet equipped with the operating mechanism of the invention, when the cabinet door is opened, the top block 72 is driven to move downwards so as to close the operation hole 311, so that a key for rotating the driving shaft 31 can be inserted into the operation hole 311 when the cabinet door is opened, so as to avoid accidents, when the cabinet door is closed, the top block 72 is driven to move upwards so as to reopen the operation hole 311, and an operator can insert the key into the operation hole 311 outside the cabinet door, so that the operating mechanism is safer and more reliable.
The principle of operation of this embodiment is as follows:
as shown in fig. 5 and 12, when the operating mechanism is located at the isolation station, the clockwise rotation of the driving shaft 31 drives the unlocking member 4 and the driving member 32 to rotate synchronously, the driving member 32 drives the second driving arm 34 to rotate clockwise during the rotation, the first driving arm 33 pushes the first limiting portion 21 to abut against the first locking device 11, as shown in fig. 6, the first spring 35 and the second spring 36 compress and store energy, as shown in fig. 13, when the unlocking member 4 rotates to unlock the first locking device 11, that is, the first limiting portion 21 is not blocked, the first spring 35 and the second spring 36 reset and release energy to push the first limiting portion 21 to disengage from the first locking device 11 and rotate clockwise, so that the first limiting portion 21 rotates between the second locking device 12 and the first locking device 11, and the output member 2 is driven to rotate, thereby switching from the isolation station to the closing station as shown in fig. 7.
As shown in fig. 7 and 13, at this time, the operating mechanism is located at the closing station, the counterclockwise rotation driving shaft 31 drives the unlocking piece 4 and the driving piece 32 to rotate synchronously, the driving piece 32 drives the first driving arm 33 to rotate counterclockwise in the rotation process, the second driving arm 34 pushes the second limiting portion 22 to abut against the third locking device 13, as shown in fig. 8, the first spring 35 and the second spring 36 compress and store energy, as shown in fig. 12, when the unlocking piece 4 rotates to unlock the third locking device 13, that is, the second limiting portion 22 is not blocked, the first spring 35 and the second spring 36 reset and release energy to push the second limiting portion 22 to disengage from the third locking device 13 and rotate counterclockwise, so that the first limiting portion 21 rotates counterclockwise and pushes the first locking device 11 to rotate between the first locking device 11 and the fourth locking device 14, and at the same time, the output piece 2 is driven to rotate, thereby switching from the closing station to the isolating station shown in fig. 5.
As shown in fig. 5 and 12, at this time, the operating mechanism is located at the isolation station, the counterclockwise rotation driving shaft 31 drives the unlocking member 4 and the driving member 32 to rotate synchronously, the driving member 32 drives the first driving arm 33 to rotate counterclockwise in the rotation process, the second driving arm 34 pushes the first limiting portion 21 to abut against the fourth locking device 14, as shown in fig. 9, the first spring 35 and the second spring 36 compress and store energy, as shown in fig. 14, when the unlocking member 4 rotates to unlock the fourth locking device 14, that is, the first limiting portion 21 is not blocked, the first spring 35 and the second spring 36 reset and release energy to push the first limiting portion 21 to disengage from the fourth locking device 14 and rotate counterclockwise, so that the first limiting portion 21 rotates to between the fourth locking device 14 and the third locking device 13, and at the same time, the output member 2 is driven to rotate, thereby switching from the isolation station to the grounding station as shown in fig. 10.
As shown in fig. 10 and 14, at this time, the operating mechanism is located at the grounding station, the clockwise rotation of the driving shaft 31 drives the unlocking member 4 and the driving member 32 to rotate synchronously, the driving member 32 drives the second driving arm 34 to rotate clockwise during the rotation, the first driving arm 33 pushes the second limiting portion 22 to abut against the second locking device 12, as shown in fig. 11, the first spring 35 and the second spring 36 compress and store energy, as shown in fig. 12, when the unlocking member 4 rotates to unlock the second locking device 12, that is, the second limiting portion 22 is not blocked, the first spring 35 and the second spring 36 reset and release energy to push the second limiting portion 22 to disengage from the second locking device 12 and rotate clockwise, so that the first limiting portion 21 rotates clockwise and pushes the fourth locking device 14 to rotate between the first locking device 11 and the fourth locking device 14, and simultaneously drive the output member 2 to rotate, thereby switching from the grounding station to the isolating station as shown in fig. 5.
Compared with the prior art, the operating mechanism provided by the invention can realize the switching between three stations by only using one driving shaft 31, the operating mode is convenient and rapid, the structure is simple and compact, the mechanism volume is small, the cost is lower, the self-locking capability of the operating mechanism can be improved by matching the locking device with the unlocking piece 4, the operating mechanism is safe and reliable, and meanwhile, the energy storage driving device 3 adopts a couple moment driving mode realized by matching double springs with a shear type driving arm, the operation is labor-saving, the rigidity is good, the stability is high, and the stable and reliable operation of a switch is ensured.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and modifications and variations of the present invention are also intended to fall within the scope of the appended claims. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. The energy storage driving device is characterized by comprising a driving shaft, a driving part, two elastic elements and a scissor arm formed by hinging the middle parts of two driving arms on the driving shaft, wherein the two elastic elements are respectively abutted against the opposite end parts of the two driving arms, the two elastic elements are compressed to store energy or reset to release energy along with the change of the opposite state of the end parts of the two driving arms, the driving part is arranged on the inner sides of the two driving arms, and the driving part rotates along with the driving shaft to drive the driving arms on one side of the driving part in the rotating direction of the driving part to rotate.
2. The energy storing drive as claimed in claim 1, characterized in that the scissor arm comprises a first drive arm comprising a first arm section and a second arm section on both sides of the drive shaft and a second drive arm comprising a third arm section and a fourth arm section on both sides of the drive shaft, two resilient members being hingedly connected between the first drive arm and the fourth drive arm and between the second drive arm and the third drive arm, respectively, the drive being provided with a first drive portion between the first arm section and the third arm section and a second drive portion between the second arm section and the fourth arm section.
3. An energy storage driving device according to claim 2 wherein there are two sets of first and second driving arms, and the resilient members and the driving members are disposed between the two sets of first and second driving arms, the first and second driving arms being sequentially arranged alternately, the two resilient members comprising first and second springs, the first spring having first hinge seats at its ends for respectively articulating with the first and fourth arm segment ends, and the second spring having second hinge seats at its ends for respectively articulating with the second and third arm segment ends.
4. The energy storage driving device as claimed in claim 3, wherein a first telescopic rod is connected between the first hinged seats at two ends, a second telescopic rod is connected between the second hinged seats at two ends, and the first telescopic rod and the second telescopic rod are contracted along with the energy storage of the compression of the elastic element and are expanded along with the energy release of the restoration of the elastic element.
5. The energy storage driving device according to claim 2, wherein the first driving arm further comprises a first transition section connected with the first arm section and the second arm section, an included angle is formed between the first transition section and the first arm section and between the first transition section and the second arm section, the second driving arm further comprises a second transition section connected with the third arm section and the fourth arm section, an included angle is formed between the second transition section and the third arm section and between the second transition section and the fourth arm section, and the first transition section and the second transition section are respectively provided with a shaft hole hinged with the driving shaft.
6. Three station operating mechanisms, its characterized in that includes:
a support;
the energy storage driving device as claimed in any one of claims 1 to 5, wherein the energy storage driving device is mounted on a bracket, the driving shaft is rotatably connected with the bracket, and the driving shaft is provided with an operating structure for connecting with an external part for driving the driving shaft to rotate;
the output piece can be arranged on the rear side of the energy storage driving device in a rotating mode around a hinge axis of the scissor arm, and a limiting part located between the end parts of the two driving arms is arranged on the output piece, so that the output piece is driven to rotate when the driving arms abut against the limiting part;
the first locking device, the second locking device, the third locking device and the fourth locking device are used for locking the limiting part on the corresponding operation station respectively, so that the driving shaft can be rotated to enable the elastic element to compress and store energy when the limiting part is locked;
the unlocking piece is driven by the driving shaft to rotate and enables the elastic element to release energy to push the limiting part when the corresponding locking device is unlocked, so that the output piece is driven to rotate to switch the operating station.
7. The three-station operating mechanism according to claim 6, wherein the first to fourth locking devices are sequentially arranged along a rotation track of the output member, each of the first to fourth locking devices comprises an installation portion, a clamping portion connected with the installation portion, and an elastic reset member for driving the installation portion to swing and reset, the installation portion is rotatably installed on the bracket, the clamping portions of the first and fourth locking devices are oppositely arranged, the clamping portion of the second locking device faces the first locking device, the clamping portion of the third locking device faces the fourth locking device, each clamping portion is provided with a pin, and the unlocking member pushes the pin to drive the clamping portion to swing so as to unlock the corresponding locking device.
8. The three-position operating mechanism of claim 6 or 7, wherein the first to fourth locking devices are 40Cr steel subjected to quenching treatment.
9. The three-position operating mechanism according to claim 7, wherein the bracket is provided with a kidney-shaped hole along the swing track of the locking device corresponding to the pin, the pin extends to the other side of the bracket through the kidney-shaped hole, and the unlocking member is arranged on one side of the bracket opposite to the energy storage driving device.
10. The three-station operating mechanism according to claim 7 or 9, wherein the unlocking member comprises a connecting portion and triggering portions arranged on two opposite sides of the connecting portion for pushing the pin, the connecting portion is connected with the driving shaft, an end curve of the triggering portion comprises an arc section and inclined straight sections arranged at two opposite ends of the arc section, the middle of the arc section protrudes outwards, one end of each inclined straight section is connected with a side wall of the triggering portion, and the other end of each inclined straight section is connected with the arc section.
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| CN202010824791.5A CN112002590B (en) | 2020-08-17 | 2020-08-17 | Energy storage driving device and three-station operating mechanism applying same |
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| CN202010824791.5A CN112002590B (en) | 2020-08-17 | 2020-08-17 | Energy storage driving device and three-station operating mechanism applying same |
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| CN112002590A CN112002590A (en) | 2020-11-27 |
| CN112002590B true CN112002590B (en) | 2022-10-28 |
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| CN113643910B (en) * | 2021-08-09 | 2022-04-05 | 北京清畅电力技术股份有限公司 | Automatic displacement coaxial structure for GIS three-station isolation mechanism and control method thereof |
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