CN108122707B - Three-position switch manual operation mechanism and three-position switch - Google Patents
Three-position switch manual operation mechanism and three-position switch Download PDFInfo
- Publication number
- CN108122707B CN108122707B CN201711175730.5A CN201711175730A CN108122707B CN 108122707 B CN108122707 B CN 108122707B CN 201711175730 A CN201711175730 A CN 201711175730A CN 108122707 B CN108122707 B CN 108122707B
- Authority
- CN
- China
- Prior art keywords
- input shaft
- pawl
- shaft
- torsion spring
- isolation
- 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.)
- Active
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 50
- 238000002955 isolation Methods 0.000 claims abstract description 72
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 39
- 230000009471 action Effects 0.000 description 10
- 239000000758 substrate Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
Abstract
The invention relates to a three-position switch manual operating mechanism and a three-position switch; the three-station switch manual operation mechanism comprises a shell, an isolation input shaft, a grounding input shaft and a worm wheel shaft, wherein a clamping groove is formed in the isolation input shaft, a limiting sleeve is rotatably arranged on the isolation input shaft, a limiting sleeve driving gear is arranged on the worm wheel shaft, an avoiding hole is formed in the limiting sleeve, and the limiting sleeve is provided with an opening position and a blocking position; the shell is internally provided with a pawl used for limiting the rotation direction of the isolation input shaft, the pawl is provided with two pawl parts which are radially clamped on the periphery of the isolation input shaft along the isolation input shaft, the rotation limiting directions of the two pawl parts and the isolation input shaft are opposite, and the shell is also provided with a switching structure used for shifting the pawl to swing so as to control the corresponding pawl part to be in contact with or separated from the isolation input shaft. Compared with the prior art, the three-position switch is more reliable and safer in switching among the working positions.
Description
Technical Field
The invention relates to a manual operating mechanism of a three-position switch and the three-position switch using the same in the field of high-voltage switches.
Background
Most of the existing switch isolation mechanisms are two-station mechanisms which can only be switched between a switch-on position and a switch-off position, and the number of three-station mechanisms which can be switched among isolation switch-on, isolation switch-off and grounding is relatively small. The three-station mechanism on the current market generally has the problems of large volume, inconvenient operation, unreliable switching and the like. Chinese utility model patent with publication number CN205039087U and publication date 2016.02.17 discloses a three-position switch manual operating mechanism, which comprises a shell formed by a front substrate, a rear substrate and a column supported between the front and rear substrates, wherein an isolation input shaft, a grounding input shaft and a main transmission shaft are rotatably arranged between the front and rear substrates in the shell; an isolation input gear is arranged on the isolation input shaft, and a grounding input gear is arranged on the grounding input shaft; the main transmission shaft is used for driving a moving contact of the three-station switch to move, a clutch is arranged on the main transmission shaft, and an electric driving gear for driving the electric operating mechanism and a manual driving gear for driving the manual operating mechanism are arranged on the clutch; the isolation input shaft is located between the grounded input shaft and the main drive shaft, and the isolation input gear is simultaneously meshed with the grounded input gear and the manual input gear on the clutch. The isolating input shaft and the grounding input shaft are provided with operation ends for operating the crank arm or the handle.
The worm gear assembly is further arranged in the shell, one end of the worm faces the main transmission shaft, the main transmission shaft and the worm are in transmission through a pair of mutually meshed bevel gears, the worm gear is mounted on a worm gear shaft, and the worm gear rotates along with the transmission main shaft; the worm gear and the grounding input gear are respectively provided with a stop block for stop matching in the relative rotation process of the worm gear and the grounding input gear; the two stop blocks can form stop matching when the three-position switch reaches an isolation closing position and a grounding position, and the limit of the stroke of the manual operating mechanism is realized. The existing manual operating mechanism of the three-position switch can limit the three-position switch at an isolation position and a grounding position, but is lack of limit for the three-position switch at the isolation position; and the freedom of switching among all working positions is relatively large, the limiting performance is relatively poor, and the switching is unreliable.
Disclosure of Invention
The invention aims to provide a three-position switch manual operating mechanism which is used for solving the problems of poor limiting performance and unreliable switching of the conventional three-position switch manual operating mechanism; the invention also aims to provide a three-position switch using the operating mechanism.
In order to achieve the purpose, the scheme 1 of the manual operating mechanism of the three-position switch is as follows: the manual operating mechanism of the three-station switch comprises a shell, an isolation input shaft, a grounding input shaft and a worm wheel shaft, wherein the isolation input shaft, the grounding input shaft and the worm wheel shaft are rotatably installed on the shell, two clamping grooves are formed in the outer wall of the isolation input shaft at intervals along the circumferential direction of the isolation input shaft, a limiting sleeve is rotatably installed on the isolation input shaft, two avoidance holes used for controlling the clamping grooves to be opened and closed are formed in the limiting sleeve, a limiting sleeve driving gear is arranged on the worm wheel shaft, and the limiting sleeve is provided with an avoidance position where the avoidance holes coincide with the clamping grooves and a closed position where the avoidance holes are staggered with the clamping grooves; the shell is further provided with a pawl assembly which is used for being inserted into the clamping groove when the clamping groove is opened so as to limit the rotation of the isolation input shaft, the pawl is provided with two pawl parts which are respectively used for being matched with the two clamping grooves, the two pawl parts are clamped on the outer side of the isolation input shaft, the interval between the end parts of the two pawl parts is larger than the interval between the two clamping grooves, and the shell is further provided with a switching structure which is used for driving the pawl assembly to swing so as to realize the switching of the limiting rotation direction of the isolation input shaft by the pawl assembly.
The manual operating mechanism comprises a manual operating mechanism, a manual operating mechanism and a switching structure, wherein the manual operating mechanism comprises a shell, a pawl assembly and a pawl component, the manual operating mechanism comprises a pawl, the pawl assembly comprises a pawl and a pawl shaft, the pawl is installed on the pawl shaft, two pawl parts of the pawl are crossed in a V shape, two torsion springs are arranged on the pawl shaft at intervals, each torsion spring is provided with two torsion spring arms which are parallel to each other, the switching structure comprises an operation switching plate installed on the pawl shaft, reset screws are respectively arranged on the shell and the pawl, and the two reset screws are respectively inserted between the two torsion spring arms of the corresponding torsion springs; the operation switching plate is provided with a torsion spring driving plate which extends towards the inner side of the shell and is used for driving the torsion spring, the torsion spring driving plate is provided with an embedded groove for embedding the torsion spring arms, and the torsion spring arms are all clamped in the embedded groove.
In the manual operating mechanism according to the claim 4, an inner flange turned toward the inner side of the housing is provided on one side of the operation switching plate away from the rotation axis of the operation switching plate, and an arc-shaped groove for avoiding the inner flange is provided on the panel component.
In the manual operating mechanism according to the claim 4, a worm wheel is mounted on a worm wheel shaft, a ground input gear is mounted on a ground input shaft, limit blocks for limiting stop are arranged on the worm wheel and the ground input gear, and a limit block mounting seat for elastically mounting the limit blocks is arranged on the worm wheel and/or the ground input gear.
The scheme 1 of the three-position switch is as follows: the three-station switch comprises a manual operating mechanism, the manual operating mechanism comprises a shell, and an isolation input shaft, a grounding input shaft and a worm wheel shaft which are rotatably installed on the shell, wherein two clamping grooves are formed in the outer wall of the isolation input shaft at intervals along the circumferential direction of the isolation input shaft; the shell is further provided with a pawl assembly which is used for being inserted into the clamping groove when the clamping groove is opened so as to limit the rotation of the isolation input shaft, the pawl is provided with two pawl parts which are respectively used for being matched with the two clamping grooves, the two pawl parts are clamped on the outer side of the isolation input shaft, the interval between the end parts of the two pawl parts is larger than the interval between the two clamping grooves, and the shell is further provided with a switching structure which is used for driving the pawl assembly to swing so as to realize the switching of the limiting rotation direction of the isolation input shaft by the pawl assembly.
The three-station switch comprises a three-station switch according to the scheme 1, wherein the pawl assembly comprises a pawl and a pawl shaft, the pawl is installed on the pawl shaft, two pawl parts of the pawl are crossed in a V shape, two torsion springs are arranged on the pawl shaft at intervals, each torsion spring is provided with two parallel torsion spring arms, the switching structure comprises an operation switching plate installed on the pawl shaft, reset screws are respectively arranged on the shell and the pawl, and the two reset screws are respectively inserted between the two torsion spring arms of the corresponding torsion spring; the operation switching plate is provided with a torsion spring driving plate which extends towards the inner side of the shell and is used for driving the torsion spring, the torsion spring driving plate is provided with an embedded groove for embedding the torsion spring arms, and the torsion spring arms are all clamped in the embedded groove.
In the three-position switch according to the claim 3, an inner flange turned toward the inner side of the housing is arranged on one side of the operation switching plate away from the rotation axis of the operation switching plate, and an arc-shaped groove for avoiding the inner flange is arranged on the panel component.
In the three-position switch according to the claim 4, a worm wheel is mounted on a worm wheel shaft, a ground input gear is mounted on a ground input shaft, limit blocks for limiting stop are arranged on the worm wheel and the ground input gear, and a limit block mounting seat for elastically mounting the limit blocks is arranged on the worm wheel and/or the ground input gear.
The invention has the beneficial effects that: when the three-position switch is used, the isolating input shaft or the grounding input shaft is rotated, in the rotating process, when the three-position switch moves from an isolating closed position or a grounding position to an isolating separated position, the avoiding hole on the limiting sleeve is overlapped with the position of the clamping groove on the isolating input shaft, one pawl part is inserted into one clamping groove, the other pawl part is spaced from the other clamping groove, the rotating direction of the isolating input shaft is limited, the switching structure is operated, the pawl assembly swings to the opposite direction, one pawl part is separated from the clamping groove, the other pawl part is inserted into the corresponding clamping groove, because the two pawl parts are clamped on the outer side of the isolating input shaft, the extension lines of the two pawl parts are positioned on the two radial sides of the axis of the isolating input shaft, the limiting rotating directions of the two pawl parts to the isolating input shaft are different, different input shafts are operated along with the switching of the switching structure, and the movable contact of the three-position switch is ensured to continuously move along the previous moving direction when the isolating separated position, the reverse movement is restricted. Compared with the prior art, the switching between the stations is more reliable, and the safety is higher.
Drawings
Fig. 1 is a perspective view of an embodiment of a manual operating mechanism for a three-position switch according to the present invention;
FIG. 2 is a front view of the three-position switch manual operating mechanism of the present invention;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a rear view of FIG. 1;
FIG. 5 is a view showing a coupling structure between the pawl assembly and the operation switch plate;
FIG. 6 is a front view of the internal structure of the manual operating mechanism of the three-position switch of the present invention in the closed position;
FIG. 7 is a top view of FIG. 6;
FIG. 8 is a rear view of FIG. 6;
FIG. 9 is a rear view of the internal structure of the three-position switch manual operating mechanism of the present invention in the isolated sub-position;
FIG. 10 is a front view of the internal structure of the three-position switch manual operating mechanism of the present invention immediately before reaching the grounding position from the isolating switch;
fig. 11 is a front view of the internal structure of the manual operating mechanism of the three-position switch of the present invention in the grounding position.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
The specific embodiment of the manual operating mechanism of the three-position switch of the present invention, as shown in fig. 1 to 11, includes a main body module 6 and a panel component 1, wherein the main body module 6 includes a front substrate, a rear substrate and a support structure disposed between the front substrate and the rear substrate; the panel component 1 is fixed on the front base plate, an isolation input shaft 21, an isolation input gear 211 fixedly arranged on the isolation input shaft 21, a grounding input shaft 22, a grounding input gear 221 fixedly arranged on the grounding input shaft 22, a main transmission shaft 4 and a clutch 20 arranged on the main transmission shaft 4 are arranged between the front base plate and the rear base plate in the main body module 6; the isolating input shaft 21, the grounding input shaft 22 and the main drive shaft 4 are rotatably mounted on the front and rear base plates. The main transmission shaft 4 extends out of the main body module 6 backwards, and the main transmission shaft 4 can drive a moving contact of the three-position switch to move through an output structure at the shaft end.
One end of the isolating input shaft 21 and one end of the grounding input shaft 22 both penetrate through the body module 6 and extend into the panel member 1; a handle operating sleeve assembly 7 for operating a handle is respectively arranged at one end of the isolating input shaft 21 extending into the panel component 1 and one end of the grounding input shaft 22 extending into the panel component 1; the panel part 1 is provided with a handle jack for inserting the handle, and the handle jack is provided with an isolation shaft handle jack corresponding to the isolation input shaft 21 and a grounding shaft handle jack corresponding to the grounding input shaft 22. Rotate on the panel part 1 and be equipped with operation switch board 2, be equipped with on the operation switch board 2 and be used for dodging two handles of keeping apart a handle jack and ground connection axle handle jack dodge the mouth.
The clutch 20 is the prior art, and the clutch 20 is provided with an electric driving gear 201 with a larger diameter and a manual driving gear 202 with a smaller diameter; the electric drive gear 201 and the manual drive gear 202 are coaxially arranged; the electric driving gear 201 is used for driving the electric operating mechanism. The isolating input gear 211 meshes with the grounded input gear 221, and the manual drive gear 202 meshes with the isolating input gear 211.
A first transmission gear 8 is arranged on the main transmission shaft 4 at a position close to the main body module 6, and the first transmission gear 8 is positioned on the outer side of the main body module 6; a second transmission gear 5 is arranged on the main body module 6 and right below the first transmission gear 8; a first bevel gear 101 which is coaxial with the second transmission gear 5 is arranged on the inner side of the main body module 6; the worm 17 is obliquely arranged on the inner wall of the body module 6, and one end of the worm 17 close to the first bevel gear 101 is provided with a second bevel gear 102 for matching with the first bevel gear 101. A worm wheel 18 for engaging with the worm 17 is provided between the front and rear substrates in the main body module 6.
The grounding input gear 221 is provided with a grounding wheel limiting block 222, and the worm wheel 18 is provided with a worm wheel limiting block 231 for stop-matching with the grounding wheel limiting block 222; a limit block mounting seat 23 for mounting the worm wheel limit block 231 is arranged on the worm wheel 18; the worm wheel limiting block 231 is elastically mounted on the limiting block mounting seat 23, and the worm wheel limiting block 231 can swing within a certain angle range under the action of the spring force inside the limiting block mounting seat 23.
The outer wall of the shaft section part of the isolation input shaft 21 extending into the panel component 1 is provided with two clamping grooves which are arranged at intervals along the circumferential direction of the isolation input shaft 21; a limiting sleeve 24 for controlling the opening and closing of the clamping groove is rotatably assembled on the part, provided with the clamping groove, of the isolating input shaft 21; the limiting sleeve 24 is connected with a limiting sleeve gear 241 for driving the limiting sleeve 24 to rotate around the isolating input shaft 21; a limiting sleeve driving gear 181 for driving the limiting sleeve gear 241 to rotate is arranged on a rotating shaft where the worm wheel 18 is located, and the limiting sleeve driving gear 181 and the worm wheel 18 rotate synchronously. Two avoidance holes for simultaneously avoiding and isolating the two clamping grooves on the input shaft 21 when the limiting sleeve 24 rotates in place are formed in the limiting sleeve 24.
The panel component 1 is provided with a pawl component 3 which is used for being clamped into a corresponding clamping groove when the clamping groove on the isolating input shaft 21 is opened so as to limit the rotation of the isolating input shaft 21; the pawl assembly 3 comprises a pawl shaft, a pawl 31 assembled on the pawl shaft, a torsion spring 32 and a reset screw 33 for pressing the torsion spring 32; two torsion springs 32 are arranged at intervals along the axial direction of the pawl shaft and are respectively an upper torsion spring 321 and a lower torsion spring 322; the pawl 31 has a first pawl portion 311 and a second pawl portion 312 disposed oppositely, and the operation switch plate 2 is mounted on the pawl shaft. The reduction screw 33 includes an upper reduction screw 331 and a lower reduction screw 332.
The upper reset screw 331 is fixedly installed on the panel part 1, the lower reset screw 332 is fixedly installed on the pawl 31, the upper reset screw and the lower reset screw are respectively positioned between two torsion spring arms of corresponding torsion springs, the operation switching plate 2 is provided with an i-shaped torsion spring drive plate 34 which is turned inwards, and the torsion spring drive plate 34 is provided with an embedded groove for embedding each torsion spring arm. The torsion spring driving plate 34 rotates with the operation switching plate 2, the upper torsion spring 321 is provided to provide a restoring force to the operation switching plate 2 under the restriction of the upper return screw 331, the torsion spring driving plate drives the pawls 31 to swing through the lower torsion spring 322 and the lower return screw 332, and only one of the first pawl portion 311 and the second pawl portion 312 is pressed against the stopper sleeve 24.
When the operation switching plate 2 rotates to correspond to the position of the isolation input shaft 21, the pawl 31 tends to rotate clockwise in each rear view under the action of the torsional spring force, the first pawl 311 is pressed on the outer wall surface of the limit sleeve 24, and the second pawl part 312 is spaced from the limit sleeve 24; when the operation switch plate 2 is rotated to correspond to the position of the grounding input shaft 22, the pawl 31 tends to rotate counterclockwise in each rear view under the action of the torsion spring force, the second pawl 312 is pressed against the outer wall surface of the position limiting sleeve 24, and the first pawl part 311 is spaced from the position limiting sleeve 24.
In the embodiment, the isolated input gear 211 and the grounding input gear 221 are in 1:1 transmission, the isolated input gear 211 and the manual driving gear 202 are in 1:2 transmission, the first transmission gear 8 and the manual driving gear 202 rotate coaxially, the first transmission gear 8 and the second transmission gear 5 are in 1:1 transmission, the first bevel gear 101 and the second transmission gear 5 rotate coaxially, the first bevel gear 101 and the second bevel gear 102 are in 1:1 transmission, the worm 17 and the second bevel gear 102 rotate coaxially, the worm 17 and the worm gear 18 are in 48:1 transmission, the limit sleeve driving gear 181 and the worm gear 18 rotate coaxially, and the limit sleeve driving gear 181 and the limit sleeve gear 241 are in 3:2 transmission.
In the final movement form of the manual operating mechanism, in fig. 5, the isolating input shaft 21 rotates clockwise n (n is more than or equal to 0 and less than or equal to 12) turns, the grounding input shaft 22 rotates counterclockwise n turns, the main transmission shaft 4 rotates counterclockwise 2n turns, the worm gear 18 rotates clockwise n/24 turns, and the limit sleeve gear 241 rotates counterclockwise 3n/48 turns.
The working process of the manual operating mechanism of the three-position switch is as follows: the rotational directions of the isolating input shaft 21, the isolating input gear 211, the grounding input shaft 22, and the grounding input gear 221 are referenced with respect to the front view.
The three-position switch is switched from the isolation to the isolation, and as shown in fig. 6, the three-position switch is positioned at the isolation switching position; a rotating operation switch plate 2, which inserts a handle into the handle operation sleeve assembly 7 on the isolating input shaft 21 to prepare for rotating the isolating input shaft 21; at this time, the worm wheel limiting block 231 on the worm wheel 18 and the ground wheel limiting block 222 on the ground input gear 221 are stopped and limited, and the isolation input gear 211 can only rotate clockwise; the isolation input shaft 21 rotates clockwise, the isolation input gear 211 drives the grounding input gear 221 and the manual driving gear 202 to rotate, the main transmission shaft 4 rotates counterclockwise along with the manual driving gear 202, and the main transmission shaft 4 drives the moving contact of the three-position switch to move to the isolation position. Meanwhile, the first transmission gear 8 rotates along with the main transmission shaft 4, the first transmission gear 8 drives the stop collar driving gear 181 to rotate through the second transmission gear 5, the bevel gear assembly 10, the worm 17 and the worm wheel 18, and the stop collar driving gear 181 drives the stop collar 24 which is rotatably assembled on the isolation input shaft 21 to rotate.
As shown in fig. 8, when the operation switch plate 2 is rotated to a position corresponding to the position of the isolating input shaft 21, the pawl 31 tends to rotate clockwise in the rear view under the pressure of the torsion spring 32, and the first pawl 311 is pressed against the outer wall surface of the position restricting sleeve 24; before the moving contact of the three-position switch reaches the isolation position, the first pawl part 311 cannot enter the clamping groove because the avoidance port on the limiting sleeve 24 and the clamping groove on the isolation input shaft 21 are staggered. When the isolating input shaft 21 rotates to 12 circles, the three-position switch reaches an isolating position; at this time, the evasion port on the limiting sleeve 24 coincides with the position of the slot on the isolating input shaft 21, and the first pawl part 311 is inserted into the slot on the isolating input shaft 21 under the action of the torsion spring 32; the isolating input shaft 21 cannot continue to rotate clockwise and the three-position switch reaches the isolating position from the isolating on position.
The three-position switch is divided into a grounding position from an isolation position, the operation switching plate 2 is rotated to a position corresponding to the grounding input shaft 22, and a handle is inserted into a handle operation sleeve assembly 7 on the grounding input shaft 22 to prepare for rotating the grounding input shaft 22; at this time, the pawl 31 tends to rotate counterclockwise in a rear view under the action of a torsion spring force, the first pawl part 311 is disengaged from the corresponding slot on the isolating input shaft 21, the second pawl part 312 is clamped into the slot on the isolating input shaft 21 corresponding to the second pawl part 312 under the action of the torsion spring force, and the isolating input shaft 21 can continue to rotate clockwise but cannot rotate counterclockwise due to the fact that the first pawl part 311 and the second pawl part 312 restrict the rotation of the isolating input shaft 21 in opposite directions; correspondingly, the grounded input shaft 22 can only rotate counterclockwise.
The grounding input shaft 22 rotates anticlockwise, the grounding input gear 221 drives the isolating input gear 211 to rotate clockwise, the isolating input gear 211 drives the manual driving gear 202 to rotate anticlockwise, the main transmission shaft 4 rotates anticlockwise along with the manual driving gear 202, and the main transmission shaft 4 drives the moving contact of the three-position switch to move towards the grounding position. When the grounding input shaft 22 rotates to the 10 th to 11 th circles, as shown in fig. 10, the grounding wheel stopper 222 rotates to the other side of the worm wheel stopper 231, and continues to rotate, so that the two stoppers collide. Because the worm wheel limiting block 231 is elastically mounted on the limiting block mounting seat 23, the collision position of the two limiting blocks is close to the head of the corresponding limiting block, the worm wheel limiting block 231 swings to the other side under the action of the collision force, and the ground wheel limiting block 222 can cross over the worm wheel limiting block 231. After the ground wheel stopper 22 passes over the worm wheel stopper 231, the ground input gear 221 may continue to rotate the reverse potential needle of the 12 th turn.
When the grounding input shaft 22 rotates to the 12 th turn, the two limit blocks continue to collide, the collision positions of the two limit blocks are close to the roots of the limit blocks, and after the worm wheel limit block 231 deflects in place, the grounding wheel limit block 222 still cannot pass over the worm wheel limit block 231, and the two limit blocks form stop fit; at this point, the grounded input shaft 22 cannot continue to rotate counterclockwise and the three-position switch reaches the grounded position from the isolated position.
The three-station switch rotates the grounding input shaft 22 clockwise from the grounding position to the isolation sub-position, the grounding input gear 221 drives the isolation input gear 211 to rotate anticlockwise, the isolation input gear 211 drives the manual driving gear 202 to rotate clockwise, the main transmission shaft 4 rotates clockwise along with the manual driving gear 202, and the main transmission shaft 4 drives the movable contact of the three-station switch to move towards the isolation sub-position. When the grounding input shaft 22 rotates clockwise for 12 circles, the avoidance hole on the limit sleeve 24 is overlapped with the clamping groove on the isolating input shaft 21, and the second pawl part 312 is clamped into the corresponding clamping groove on the isolating input shaft 21 under the action of the torsion spring; at this point, the isolating input shaft 21 cannot continue to rotate counterclockwise; accordingly, the grounding input shaft 22 cannot rotate clockwise continuously, and the moving contact of the three-position switch reaches the separation position.
The three-position switch rotates the operation switching plate 2 to a position corresponding to the isolation input shaft 21 from an isolation separation position to an isolation combination position, and the handle is inserted into the handle operation sleeve assembly 7 on the isolation input shaft 21; at this time, the pawl 31 tends to rotate clockwise in the rear view under the action of the torsion spring 32, the second pawl part 312 is disengaged from the corresponding slot on the isolating input shaft 21, and the first pawl part 311 is engaged into the corresponding slot on the isolating input shaft 21 under the action of the torsion spring; at this time, the input shaft 21 can be rotated counterclockwise, but cannot be rotated clockwise. Then, the isolating input shaft 21 is rotated counterclockwise, and when the isolating input shaft 21 is rotated to 11 th to 12 th turns, the ground wheel stopper 222 and the worm wheel stopper 231 collide for the first time; when the isolating input shaft 21 rotates for the 12 th turn, the grounding wheel limiting block 222 and the worm wheel limiting block 231 are stopped and limited, the isolating input shaft 21 cannot rotate counterclockwise continuously, and the moving contact of the three-position switch reaches an isolating position.
Compared with the prior art, the manual operating mechanism of the three-position switch has the advantages of small volume, simple structure, low manufacturing cost, stable performance, higher transmission precision, more reliable switching among working positions, safer operation and no need of limiting the isolation sub-positions of the switch by other components.
In other embodiments, the ground wheel stopper may be configured as an elastically deflectable resilient block, and the worm wheel stopper may be fixedly disposed on the worm wheel.
The three-position switch of the embodiment of the invention comprises a manual operating mechanism for manually operating the three-position switch, and the structure of the manual operating mechanism is the same as that of any embodiment of the three-position switch manual operating mechanism of the invention. Therefore, the description will not be repeated.
Claims (10)
1. Three manual operating mechanisms of station switch, including the casing with rotate the isolation input shaft, ground connection input shaft and the worm-gear axle of installing on the casing, its characterized in that: the isolating input shaft is provided with two clamping grooves which are arranged at intervals along the circumferential direction of the isolating input shaft, the isolating input shaft is rotatably provided with a limiting sleeve, the limiting sleeve is provided with two avoiding holes for controlling the clamping grooves to be opened and closed, a limiting sleeve driving gear is arranged on a worm wheel shaft, and the limiting sleeve is provided with an avoiding position in which the avoiding holes are superposed with the clamping grooves and a closed position in which the avoiding holes are staggered with the clamping grooves; the shell is further provided with a pawl assembly which is used for being inserted into the clamping groove when the clamping groove is opened so as to limit the rotation of the isolation input shaft, a pawl of the pawl assembly is provided with two pawl parts which are respectively used for being matched with the two clamping grooves, the two pawl parts are clamped on the outer side of the isolation input shaft, the interval between the end parts of the two pawl parts is larger than the interval between the two clamping grooves, and the shell is further provided with a switching structure which is used for driving the pawl assembly to swing so as to realize the switching of the rotation limiting direction of the isolation input shaft by the pawl assembly.
2. The manual operating mechanism of a three-position switch according to claim 1, wherein: the switching structure comprises an operation switching plate arranged on the pawl shaft, the shell and the pawl are respectively provided with a reset screw, and the two reset screws are respectively inserted between the two torsion spring arms of the corresponding torsion springs; the operation switching plate is provided with a torsion spring driving plate which extends towards the inner side of the shell and is used for driving the torsion spring, the torsion spring driving plate is provided with an embedded groove for embedding the torsion spring arms, and the torsion spring arms are all clamped in the embedded groove.
3. The manual operating mechanism of a three-position switch according to claim 2, wherein: the casing includes preceding base plate, back base plate and the panel part of setting on preceding base plate, keep apart the input shaft, ground connection input shaft and turbine shaft setting are in the front, between the back base plate, keep apart and install handle operation cover subassembly on input shaft and the ground connection input shaft, two handle operation cover subassemblies and pawl subassembly set up between panel part and preceding base plate, operation switching board is installed on the outer face of panel part, be equipped with the handle that corresponds with handle operation cover subassembly position on the panel part and dodge the hole, be equipped with two handle patchholes on the operation switching board, operation switching board has two positions of opening one of them handle patchhole and closing another handle patchhole simultaneously in its rotation range.
4. The manual operating mechanism of a three-position switch according to claim 3, wherein: one side of the operation switching plate, which is far away from the rotating axis of the operation switching plate, is provided with an inner flanging turned towards the inner side of the shell, and the panel part is provided with an arc-shaped groove used for avoiding the inner flanging.
5. The manual operating mechanism of a three-position switch according to claim 4, wherein: the worm wheel shaft is provided with a worm wheel, the grounding input shaft is provided with a grounding input gear, the worm wheel and the grounding input gear are provided with limit blocks for stopping and limiting, and the worm wheel and/or the grounding input gear are/is provided with limit block mounting seats for elastically mounting the limit blocks.
6. Three station switches, including manual operating mechanism, manual operating mechanism includes that casing and rotation install the isolation input shaft, ground connection input shaft and the worm-gear axle on the casing, its characterized in that: the outer wall of the isolation input shaft is provided with two clamping grooves which are arranged at intervals along the circumferential direction of the isolation input shaft, the isolation input shaft is rotatably provided with a limiting sleeve, the limiting sleeve is provided with two avoiding holes for controlling the clamping grooves to be opened and closed, a limiting sleeve driving gear is arranged on the worm wheel shaft, and the limiting sleeve is provided with an avoiding position in which the avoiding holes are superposed with the clamping grooves and a closed position in which the avoiding holes are staggered with the clamping grooves; the shell is further provided with a pawl assembly which is used for being inserted into the clamping groove when the clamping groove is opened so as to limit the rotation of the isolation input shaft, a pawl of the pawl assembly is provided with two pawl parts which are respectively used for being matched with the two clamping grooves, the two pawl parts are clamped on the outer side of the isolation input shaft, the interval between the end parts of the two pawl parts is larger than the interval between the two clamping grooves, and the shell is further provided with a switching structure which is used for driving the pawl assembly to swing so as to achieve the switching of the limited rotation direction of the isolation input shaft by the pawl assembly.
7. The three-position switch of claim 6, wherein: the switching structure comprises an operation switching plate arranged on the pawl shaft, the shell and the pawl are respectively provided with a reset screw, and the two reset screws are respectively inserted between the two torsion spring arms of the corresponding torsion springs; the operation switching plate is provided with a torsion spring driving plate which extends towards the inner side of the shell and is used for driving the torsion spring, the torsion spring driving plate is provided with an embedded groove for embedding the torsion spring arms, and the torsion spring arms are all clamped in the embedded groove.
8. The three-position switch of claim 7, wherein: the casing includes preceding base plate, back base plate and the panel part of setting on preceding base plate, keep apart the input shaft, ground connection input shaft and turbine shaft setting are in the front, between the back base plate, keep apart and install handle operation cover subassembly on input shaft and the ground connection input shaft, two handle operation cover subassemblies and pawl subassembly set up between panel part and preceding base plate, operation switching board is installed on the outer face of panel part, be equipped with the handle that corresponds with handle operation cover subassembly position on the panel part and dodge the hole, be equipped with two handle patchholes on the operation switching board, operation switching board has two positions of opening one of them handle patchhole and closing another handle patchhole simultaneously in its rotation range.
9. The three-position switch of claim 8, wherein: one side of the operation switching plate, which is far away from the rotating axis of the operation switching plate, is provided with an inner flanging turned towards the inner side of the shell, and the panel part is provided with an arc-shaped groove used for avoiding the inner flanging.
10. The three-position switch of claim 9, wherein: the worm wheel shaft is provided with a worm wheel, the grounding input shaft is provided with a grounding input gear, the worm wheel and the grounding input gear are provided with limit blocks for limiting stop, and the worm wheel and/or the grounding input gear are/is provided with limit block mounting seats for elastically mounting the limit blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711175730.5A CN108122707B (en) | 2017-11-22 | 2017-11-22 | Three-position switch manual operation mechanism and three-position switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711175730.5A CN108122707B (en) | 2017-11-22 | 2017-11-22 | Three-position switch manual operation mechanism and three-position switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108122707A CN108122707A (en) | 2018-06-05 |
| CN108122707B true CN108122707B (en) | 2022-07-01 |
Family
ID=62227936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711175730.5A Active CN108122707B (en) | 2017-11-22 | 2017-11-22 | Three-position switch manual operation mechanism and three-position switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108122707B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112750631A (en) * | 2019-10-31 | 2021-05-04 | 许继电气股份有限公司 | Three-station operating mechanism |
| CN110931305B (en) * | 2019-12-11 | 2022-04-12 | 北京双杰电气股份有限公司 | Three-station isolation grounding mechanism |
| CN112002570B (en) * | 2020-08-28 | 2023-02-10 | 许继集团有限公司 | Three-position switch operating mechanism |
| CN113871244B (en) * | 2021-08-13 | 2023-09-01 | 天津平高智能电气有限公司 | Three-station operating mechanism and three-station switch |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2650892A1 (en) * | 2012-04-10 | 2013-10-16 | Schneider Electric Industries SAS | Control device of a medium-voltage electric switchgear unit and switchgear unit controlled by one such device |
| CN103715007A (en) * | 2013-12-11 | 2014-04-09 | 镇江大全赛雪龙牵引电气有限公司 | Position locking mechanism of three-position isolating switch |
| CN205039087U (en) * | 2015-08-04 | 2016-02-17 | 许继集团有限公司 | Three -position switch operation mechanism |
| CN105513876A (en) * | 2016-01-19 | 2016-04-20 | 扬州北辰电气设备有限公司 | Single-shaft three-station isolating switch operating mechanism |
| CN205595260U (en) * | 2016-02-23 | 2016-09-21 | 中能电气（福清）有限公司 | A stop device for three station on -off mechanism |
| CN106057514A (en) * | 2016-07-25 | 2016-10-26 | 中能建江苏能源科技有限公司 | Manual three-station operation mechanism |
| CN106409625A (en) * | 2016-11-11 | 2017-02-15 | 许继电气股份有限公司 | Breaker and three-position operating mechanism thereof, and three-position operating mechanism division and combination indication device |
| CN106558430A (en) * | 2016-11-15 | 2017-04-05 | 平高集团威海高压电器有限公司 | Isolation earthing switch and its operating mechanism |
-
2017
- 2017-11-22 CN CN201711175730.5A patent/CN108122707B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2650892A1 (en) * | 2012-04-10 | 2013-10-16 | Schneider Electric Industries SAS | Control device of a medium-voltage electric switchgear unit and switchgear unit controlled by one such device |
| CN103715007A (en) * | 2013-12-11 | 2014-04-09 | 镇江大全赛雪龙牵引电气有限公司 | Position locking mechanism of three-position isolating switch |
| CN205039087U (en) * | 2015-08-04 | 2016-02-17 | 许继集团有限公司 | Three -position switch operation mechanism |
| CN105513876A (en) * | 2016-01-19 | 2016-04-20 | 扬州北辰电气设备有限公司 | Single-shaft three-station isolating switch operating mechanism |
| CN205595260U (en) * | 2016-02-23 | 2016-09-21 | 中能电气（福清）有限公司 | A stop device for three station on -off mechanism |
| CN106057514A (en) * | 2016-07-25 | 2016-10-26 | 中能建江苏能源科技有限公司 | Manual three-station operation mechanism |
| CN106409625A (en) * | 2016-11-11 | 2017-02-15 | 许继电气股份有限公司 | Breaker and three-position operating mechanism thereof, and three-position operating mechanism division and combination indication device |
| CN106558430A (en) * | 2016-11-15 | 2017-04-05 | 平高集团威海高压电器有限公司 | Isolation earthing switch and its operating mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108122707A (en) | 2018-06-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108122707B (en) | Three-position switch manual operation mechanism and three-position switch | |
| CN102011887B (en) | Valve and valve core subassembly thereof | |
| US8382621B2 (en) | Electrical drive apparatus for valves | |
| CN105405692A (en) | Electric switch | |
| JP2006525170A (en) | Device for locking the steering shaft of an automobile | |
| CN101407186A (en) | Bidirectional self-locking apparatus | |
| CN103016776A (en) | Valve core component and low-torque valve | |
| CN207018606U (en) | One kind automatically switches intelligent actuator | |
| CN201373159Y (en) | Electric actuator moment control mechanism | |
| CN110094567B (en) | Electric three-way plug valve | |
| CN111341594A (en) | Manual-automatic integrated operating mechanism of high-voltage switch cabinet | |
| CN106298304A (en) | A kind of hydraulic pressure spring operating mechanism and travel switch assembly thereof | |
| CN112096897A (en) | Plug valve | |
| CN112682539A (en) | Ball-head type oil tank conversion valve with speed reducing mechanism | |
| CN202144688U (en) | Locking device of central control lock | |
| CN202302205U (en) | Part-turn actuator for valve control | |
| CN220963082U (en) | Bidirectional clutch for sensitive switch | |
| CN212775821U (en) | Limiting mechanism of multi-circle stroke valve electric control device | |
| CN217154254U (en) | Gas stove | |
| CN116344236B (en) | Manual and electric integrated operating mechanism | |
| CN204204717U (en) | Electric tool | |
| CN213635814U (en) | Outdoor column switch isolation operating mechanism | |
| CN218564522U (en) | Multi-rotation electric actuator | |
| CN214331640U (en) | On-vehicle antichemical strains poison ventilation shutoff valve | |
| CN108520834A (en) | A kind of manually handle three position mechanism used for high-voltage switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |