CN114864325A - Switch operating mechanism and switch electrical equipment - Google Patents
Switch operating mechanism and switch electrical equipment Download PDFInfo
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- CN114864325A CN114864325A CN202210204447.5A CN202210204447A CN114864325A CN 114864325 A CN114864325 A CN 114864325A CN 202210204447 A CN202210204447 A CN 202210204447A CN 114864325 A CN114864325 A CN 114864325A
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- cam
- switch
- auxiliary switch
- driving
- transmission
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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
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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
- H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
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- Mechanisms For Operating Contacts (AREA)
Abstract
The invention relates to a switch operating mechanism and switch electrical equipment, the switch electrical equipment comprises a switch operating mechanism, an auxiliary switch is arranged on a frame of the switch operating mechanism, a driving shaft is rotatably assembled on the frame, an auxiliary switch driving cam is arranged on the driving shaft, a cam driving part is arranged on the auxiliary switch driving cam, a cam driving part is arranged on the frame in a swinging manner, a first driving pin is arranged on the cam driving part, the first driving pin extends into the cam groove to be matched with the cam groove, an auxiliary switch driving part is assembled on the auxiliary switch rotating shaft in a top-rotating manner, a second driving pin is arranged on one of the auxiliary switch driving part and the cam driving part, a transmission long hole is arranged on the other one of the auxiliary switch driving part and the cam driving part, the auxiliary switch driving part is driven to swing by the cooperation of the second driving pin and the transmission long hole when the cam driving part swings, thereby driving the auxiliary switch rotating shaft to rotate, a microswitch is arranged on the frame, and a microswitch triggering structure is arranged on the driving shaft; the transmission structure has small friction loss in the transmission process, high motion precision and reliable use.
Description
Technical Field
The invention relates to the technical field of power switch equipment, in particular to a driving mechanism of a contact, and particularly relates to a switch operating mechanism and switch electrical equipment.
Background
The auxiliary switch is an important component in a high-voltage switch operating system, is mainly applied to various switch electrical equipment such as a disconnecting switch, a circuit breaker, a grounding switch and the like, realizes the switching-on and switching-off, signal control, electrical interlocking and other indications in a control loop, is internally provided with a switching-on indicating circuit and a switching-off indicating circuit which are respectively used for indicating the switching-on and switching-off, and can directly influence whether the whole high-voltage switch equipment can efficiently, reliably and safely operate or not by accurately switching the circuit of the auxiliary switch.
The conventional auxiliary switch switching mode mainly uses a four-bar linkage mechanism to realize transmission between an operating mechanism main shaft and an auxiliary switch rotating shaft, for example, an adjustable auxiliary switch switching structure disclosed in patent document with an authorization publication number of CN213752408U, an action shaft of the adjustable auxiliary switch switching structure drives a first connecting bent plate through an adjusting bent arm, the first connecting bent plate drives a switch bent arm through a connecting component and a second connecting bent plate, and the switch bent arm drives a square rotating shaft of an auxiliary switch to rotate; for example, in a circuit breaker operating mechanism with an auxiliary switch disclosed in patent document No. CN214428580U, a main shaft rotates to drive a rotating arm to rotate, the rotating arm drives a first connecting rod through a transmission rod, and the first connecting rod drives the auxiliary switch to operate.
For the existing four-link transmission mechanism, the kinematic pair is a low pair, and a gap exists in the low pair, so that errors and transmission loss are generated in the motion process, the errors among all parts are accumulated continuously, and finally the rotation angle of the auxiliary switch cannot reach the angle of the expected design. Meanwhile, certain errors can be generated during the assembly of the connecting rod, the installation precision is low, the auxiliary switch rotating shaft can be subjected to certain impact vibration in the movement process, and the stability of the auxiliary switch in the loop switching process is reduced.
Disclosure of Invention
The invention aims to provide a switch operating mechanism to solve the problem that the existing four-connecting-rod type auxiliary switch loop switching structure is unreliable in use; the invention also aims to provide the switch electrical equipment to solve the problem that the existing four-connecting-rod type auxiliary switch loop switching structure is unreliable in use.
The technical scheme of the switch operating mechanism of the invention is as follows:
a switch operating mechanism comprises a rack, wherein an auxiliary switch is installed on the rack and used for providing signals of switching-off operation and switching-on operation of the operating mechanism, the auxiliary switch is provided with an auxiliary switch rotating shaft, a driving shaft is assembled on the rack in a rotating mode, an auxiliary switch driving cam is assembled on the driving shaft in a rotation stopping mode, a cam groove is formed in the auxiliary switch driving cam, a cam transmission part is assembled on the rack in a swinging mode, the swinging axis of the cam transmission part is parallel to the rotating axis of the auxiliary switch driving cam, a first transmission pin extending along the swinging axis direction of the cam transmission part is arranged on the cam transmission part and extends into the cam groove to be matched with the cam groove so as to drive the cam transmission part to swing when the auxiliary switch driving cam rotates, an auxiliary switch transmission part is assembled on the auxiliary switch rotating shaft in a rotation stopping mode, and a second transmission pin is arranged on one of the auxiliary switch transmission part and the cam transmission part, and the other one is provided with a transmission long hole so as to drive the auxiliary switch transmission member to swing through the matching of the second transmission pin and the transmission long hole when the cam transmission member swings, and further drives the auxiliary switch rotating shaft to rotate.
Has the advantages that: the auxiliary switch is arranged to drive the cam transmission member to swing, the cam transmission member swings to drive the auxiliary switch transmission member to rotate, and further drives the auxiliary switch rotating shaft to rotate, so that circuit switching in the auxiliary switch is realized, in the whole transmission structure, the auxiliary switch drives the cam and the cam transmission member, and the connection between the cam transmission member and the auxiliary switch transmission member is high, the friction force of the connection part is small, so that the friction loss in the transmission process can be reduced, compared with the existing four-link transmission mechanism with low kinematic pair, the transmission loss is reduced, the overall motion precision is high, the rotating angle of the auxiliary switch rotating shaft is ensured, the use reliability of the auxiliary switch is improved, so that the product is safer and more stable in operation, and moreover, by simultaneously arranging the auxiliary switch and the micro switch, the circuit in the auxiliary switch can be switched and output signals to an indicating system to indicate the switching-closing state, the micro switch is used for controlling a switching-on and switching-off circuit of the switch operating mechanism to control switching-on and switching-off operations, or the auxiliary switch and the micro switch are used for forming position indication double confirmation, the auxiliary switch and the micro switch both output signals to the signal system, and the signal system can correspondingly indicate correct switching-on and switching-off states when receiving any signal, so that the phenomenon that judgment of the switching-on and switching-off states is influenced due to failure of one switch is avoided, misoperation is avoided, the use reliability of the switch operating mechanism is improved, meanwhile, the micro switch trigger structure and the auxiliary switch driving cam are arranged in the axial direction of the driving shaft, the structure is compact, and the space utilization rate is improved.
Furthermore, the cam groove extends along the circumferential direction of the auxiliary switch driving cam, the cam groove comprises an equal-diameter section, a closing transmission section and an opening transmission section, the equal-diameter section is located between the closing transmission section and the opening transmission section in the extending direction of the cam groove, the closing transmission section is used for driving the cam transmission member to swing when the switch operating mechanism performs closing operation, and the opening transmission section is used for driving the cam transmission member to swing when the switch operating mechanism performs opening operation.
Has the advantages that: the cam groove comprises an equal-diameter section, a closing transmission section and an opening transmission section, so that the cam transmission part can swing under the drive, and the cam groove is convenient to process.
Furthermore, a swing shaft is arranged on the rack, one end of the cam transmission piece in the length direction is assembled on the swing shaft in a swing mode, the second transmission pin is located at one end, far away from the swing shaft, of the cam transmission piece, and the first transmission pin is located between the second transmission pin and the swing shaft.
Has the advantages that: through the position setting with first drive pin between swing axle and second drive pin, when auxiliary switch drive cam drives the swing of cam driving medium through middle first drive pin like this, the second drive pin of distal end can obtain great stroke to when conveniently satisfying auxiliary switch's turned angle demand, be favorable to reducing auxiliary switch drive cam's size.
Further, the second transmission pin is arranged on the cam transmission piece, and the transmission long hole is arranged on the auxiliary switch transmission piece.
Has the advantages that: the size of the cam transmission part is reduced, and the arrangement space is saved.
Furthermore, the cam transmission part is a cam transmission connecting plate, a dodging hole is formed in the cam transmission connecting plate, the auxiliary switch rotating shaft extends into the dodging hole, and the dodging hole is used for dodging the auxiliary switch rotating shaft in the swinging process of the cam transmission connecting plate.
Has the advantages that: through setting up the cam driving medium into platelike structure, conveniently set up and dodge the hole, save space simultaneously, moreover, dodge the pore pair auxiliary switch pivot through seting up and dodge, can save the axial and arrange the space and need not to change auxiliary switch's original structure.
Further, the drive shaft is located between the swing shaft and the auxiliary switch rotating shaft in a direction along the length of the cam transmission member.
Has the advantages that: the transmission structure is arranged by fully utilizing the space on the periphery of the driving shaft, and the structure is compact.
Further, the cam transmission member and the microswitch triggering structure are positioned on the same side of the auxiliary switch driving cam in the axial direction.
Has the advantages that: the arrangement of the micro switch and the auxiliary switch is convenient.
Further, the micro switch and the auxiliary switch are located on two sides of the driving shaft in the radial direction.
Has the advantages that: the radial space of the driving shaft is fully utilized, and the structure is compact.
Further, the micro-switch triggering structure comprises a micro-switch driving cam which is arranged on the driving shaft in a rotation stopping mode, and the micro-switch driving cam is driven by the driving shaft to rotate so as to push a contact of the micro-switch, and then the micro-switch is triggered.
Has the advantages that: the microswitch is triggered by the microswitch cam, so that the structure is simple and the transmission is reliable.
Further, the microswitch driving cam, the auxiliary switch transmission member, the cam transmission member and the auxiliary switch driving cam are arranged in a staggered manner in the axial direction of the driving shaft.
Has the advantages that: avoid appearing interfering between each moving part, guarantee to use reliably.
Furthermore, the tail end of the driving shaft is provided with a switching-on/off indication board.
Has the advantages that: the opening and closing state of the switch operating mechanism can be conveniently known through the opening and closing indication board.
The technical scheme of the switch electrical equipment is as follows:
switch electrical equipment, including the switch operating mechanism that the mechanism and operation break, the switch operating mechanism includes the frame, install the auxiliary switch in the frame, the auxiliary switch is used for providing the signal that the operating mechanism opened brake and closed a floodgate and operate, the auxiliary switch has the auxiliary switch pivot, rotate and assemble the drive shaft in the frame, the stalling is assembled in the drive shaft and is equipped with the auxiliary switch drive cam, the auxiliary switch drive cam is equipped with the cam groove, the swing of frame is assembled with the cam driving medium, the swing axis of the cam driving medium is parallel with the rotation axis of the auxiliary switch drive cam, be equipped with the first driving pin that extends along its swing axis direction on the cam driving medium, the first driving pin stretches into in the said cam groove and cooperates with the cam groove, in order to drive the swing of cam driving medium when the auxiliary switch drive cam rotates, the stalling is assembled in the auxiliary switch pivot is equipped with the auxiliary switch driving medium, be equipped with the second transmission pin on auxiliary switch driving medium and one of them of cam driving medium, be equipped with the transmission slot hole on the other, with drive the swing of auxiliary switch driving medium through the cooperation of second transmission pin and transmission slot hole when the cam driving medium swings, and then drive the auxiliary switch pivot and rotate, the micro-gap switch is still installed in the frame, the micro-gap switch is used for providing the operating mechanism and breaks off the floodgate signal of operation and operation, still be equipped with the micro-gap switch trigger structure that is used for triggering micro-gap switch in the drive shaft, micro-gap switch trigger structure arranges with the auxiliary switch drive cam in the drive shaft axial.
Has the advantages that: the auxiliary switch is arranged to drive the cam transmission member to swing, the cam transmission member swings to drive the auxiliary switch transmission member to rotate, and further drives the auxiliary switch rotating shaft to rotate, so that circuit switching in the auxiliary switch is realized, in the whole transmission structure, the auxiliary switch drives the cam and the cam transmission member, and the connection between the cam transmission member and the auxiliary switch transmission member is high, the friction force of the connection part is small, so that the friction loss in the transmission process can be reduced, compared with the existing four-link transmission mechanism with low kinematic pair, the transmission loss is reduced, the overall motion precision is high, the rotating angle of the auxiliary switch rotating shaft is ensured, the use reliability of the auxiliary switch is improved, so that the product is safer and more stable in operation, and moreover, by simultaneously arranging the auxiliary switch and the micro switch, the circuit in the auxiliary switch can be switched and output signals to an indicating system to indicate the switching-closing state, the micro switch is used for controlling a switching-on and switching-off circuit of the switch operating mechanism to control switching-on and switching-off operations, or the auxiliary switch and the micro switch are used for forming position indication double confirmation, the auxiliary switch and the micro switch both output signals to the signal system, and the signal system can correspondingly indicate correct switching-on and switching-off states when receiving any signal, so that the phenomenon that judgment of the switching-on and switching-off states is influenced due to failure of one switch is avoided, misoperation is avoided, double signal indication is provided, the use reliability of the switch operating mechanism is improved, meanwhile, the micro switch trigger structure and the auxiliary switch driving cam are arranged in the axial direction of the driving shaft, the structure is compact, and the space utilization rate is improved.
Furthermore, the cam groove extends along the circumferential direction of the auxiliary switch driving cam, the cam groove comprises an equal-diameter section, a closing transmission section and an opening transmission section, the equal-diameter section is located between the closing transmission section and the opening transmission section in the extending direction of the cam groove, the closing transmission section is used for driving the cam transmission member to swing when the switch operating mechanism performs closing operation, and the opening transmission section is used for driving the cam transmission member to swing when the switch operating mechanism performs opening operation.
Has the advantages that: the cam groove comprises an equal-diameter section, a closing transmission section and an opening transmission section, so that the cam transmission part can swing under the drive, and the cam groove is convenient to process.
Furthermore, a swing shaft is arranged on the rack, one end of the cam transmission piece in the length direction is assembled on the swing shaft in a swing mode, the second transmission pin is located at one end, far away from the swing shaft, of the cam transmission piece, and the first transmission pin is located between the second transmission pin and the swing shaft.
Has the advantages that: through the position setting with first drive pin between swing axle and second drive pin, when auxiliary switch drive cam drives the swing of cam driving medium through middle first drive pin like this, the second drive pin of distal end can obtain great stroke to when conveniently satisfying auxiliary switch's turned angle demand, be favorable to reducing auxiliary switch drive cam's size.
Further, the second transmission pin is arranged on the cam transmission piece, and the transmission long hole is arranged on the auxiliary switch transmission piece.
Has the advantages that: the size of the cam transmission part is reduced, and the arrangement space is saved.
Furthermore, the cam transmission part is a cam transmission connecting plate, a dodging hole is formed in the cam transmission connecting plate, the auxiliary switch rotating shaft extends into the dodging hole, and the dodging hole is used for dodging the auxiliary switch rotating shaft in the swinging process of the cam transmission connecting plate.
Has the advantages that: through setting up the cam driving medium into platelike structure, conveniently set up and dodge the hole, save space simultaneously, moreover, dodge the pore pair auxiliary switch pivot through seting up and dodge, can save the axial and arrange the space and need not to change auxiliary switch's original structure.
Further, the drive shaft is located between the swing shaft and the auxiliary switch rotating shaft in a direction along the length of the cam transmission member.
Has the advantages that: the transmission structure is arranged by fully utilizing the space on the periphery of the driving shaft, and the structure is compact.
Further, the cam transmission member and the microswitch triggering structure are positioned on the same side of the auxiliary switch driving cam in the axial direction.
Has the advantages that: the arrangement of the micro switch and the auxiliary switch is convenient.
Further, the micro switch and the auxiliary switch are located on two sides of the driving shaft in the radial direction.
Has the beneficial effects that: the radial space of the driving shaft is fully utilized, and the structure is compact.
Further, the micro-switch triggering structure comprises a micro-switch driving cam which is arranged on the driving shaft in a rotation stopping mode, and the micro-switch driving cam is driven by the driving shaft to rotate so as to push a contact of the micro-switch, and then the micro-switch is triggered.
Has the advantages that: the microswitch is triggered by the microswitch cam, so that the structure is simple and the transmission is reliable.
Further, the microswitch driving cam, the auxiliary switch transmission member, the cam transmission member and the auxiliary switch driving cam are arranged in a staggered manner in the axial direction of the driving shaft.
Has the advantages that: avoid appearing interfering between each moving part, guarantee to use reliably.
Furthermore, the tail end of the driving shaft is provided with a switching-on/off indication board.
Has the advantages that: the opening and closing state of the switch operating mechanism can be conveniently known through the opening and closing indication board.
Drawings
Fig. 1 is a schematic view of an auxiliary switch and a microswitch mounting structure of a switch operating mechanism in embodiment 1 of the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a schematic view of an assembly structure of the auxiliary switch, the micro switch and the driving shaft in FIG. 1;
FIG. 4 is a schematic view of the drive connection of the auxiliary switch of FIG. 1 to the drive shaft;
fig. 5 is a schematic state diagram of the cam transmission member and the auxiliary switch driving cam when the switch operating mechanism is at the opening station in embodiment 1 of the present invention;
FIG. 6 is a schematic diagram of the AC loop conduction in the auxiliary switch of FIG. 5;
fig. 7 is a schematic state diagram of the cam transmission member and the auxiliary switch driving cam when the switch operating mechanism is at the closing station in embodiment 1 of the present invention;
fig. 8 is a BD loop turn-on diagram of the auxiliary switch of fig. 7.
In the figure: 1. a front mounting plate; 2. a rear mounting plate; 3. a transmission gear; 4. an auxiliary switch mounting plate; 5. a drive shaft; 6. an auxiliary switch driving cam; 61. a cam slot; 7. an auxiliary switch; 71. an auxiliary switch shaft; 8. a microswitch; 9. a microswitch drive cam; 10. a brake opening and closing indication board; 11. a cam drive link plate; 111. avoiding holes; 112. a first drive pin; 113. a second drive pin; 12. an auxiliary switch transmission member; 121. a transmission long hole; 13. a swing shaft; 14. a microswitch mounting plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration only, not by way of limitation, i.e., the embodiments described are intended as a selection of the best mode contemplated for carrying out the invention, not as a full mode. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, which may be present in embodiments of the present invention, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, terms such as "comprises," "comprising," or any other variation thereof, which may be present, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the recitation of "comprising an … …" or the like that may occur does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
In the description of the present invention, unless otherwise specifically stated or limited, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be detachable or non-detachable. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
The present invention will be described in further detail with reference to examples.
as shown in fig. 1, fig. 2, fig. 3, and fig. 4, the switch operating mechanism includes a frame, the frame includes a front mounting plate 1 and a rear mounting plate 2, the front mounting plate 1 and the rear mounting plate 2 are fixedly connected together through a connecting rod (not shown in the figure), a driving shaft 5 is rotatably assembled on the frame, the driving shaft 5 penetrates through the front mounting plate 1 and the rear mounting plate 2, a transmission gear 3 is fixedly installed on a portion of the driving shaft 5, which is located between the front mounting plate 1 and the rear mounting plate 2, the transmission gear 3 is used for being matched with a corresponding driving gear, the driving gear rotates under the action of an input torque to drive the transmission gear 3 to rotate, and then the driving shaft 5 is driven to rotate when the switch operating mechanism performs a switching operation. The rack is also provided with an auxiliary switch 7 and a microswitch 8, the auxiliary switch 7 and the microswitch 8 are both used for providing signals for the opening operation and the closing operation of the operating mechanism, wherein the auxiliary switch 7 is used for outputting signals to an indicating system to indicate the opening and closing state, the microswitch 8 is used for controlling the opening and closing circuit of the switch operating mechanism to control the opening and closing operation, and the driving shaft 5 is respectively in transmission connection with the auxiliary switch 7 and the microswitch 8 so as to drive the loop switching of the auxiliary switch 7 and trigger the microswitch 8 through the rotation of the driving shaft 5.
Be fixed with auxiliary switch mounting panel 4 on the preceding side face of front mounting panel 1, auxiliary switch 7 fixed mounting is on auxiliary switch mounting panel 4, and auxiliary switch mounting panel 4 includes vertical canned paragraph, horizontally linkage segment and vertical arrangement's installation segment, canned paragraph and front mounting panel 1 fixed connection, and auxiliary switch 7 is fixed on the installation segment.
The auxiliary switch 7 is suspended on the front side of the front mounting plate 1 by the auxiliary switch mounting plate 4. The auxiliary switch 7 is provided with an auxiliary switch rotating shaft 71, an avoiding interval is formed between the installation section of the auxiliary switch installation plate 4 and the front installation plate 1, and the auxiliary switch rotating shaft 71 penetrates through the installation section of the auxiliary switch installation plate 4 and extends into the avoiding interval.
An auxiliary switch driving cam 6 is arranged on the part, located on the front side of the front mounting plate 1, of the driving shaft 5, the auxiliary switch driving cam 6 is in rotation stopping assembly on the driving shaft 5 and is arranged close to the front mounting plate 1, a cam groove 61 is arranged on the auxiliary switch driving cam 6, and the cam groove 61 is a through groove penetrating through two end faces of the auxiliary switch driving cam 6. As shown in fig. 4, the cam groove 61 extends along a circumferential direction of the cam, and includes an equal-diameter section, a closing transmission section, and an opening transmission section, in an extending direction of the cam groove 61, the equal-diameter section is located between the closing transmission section and the opening transmission section, the equal-diameter section is an arc section that uses a center of the cam as a center of the cam, a curvature of the closing transmission section is greater than a curvature of the equal-diameter section, a curvature of the opening transmission section is smaller than a curvature of the equal-diameter section, the closing transmission section is configured to drive the cam transmission member to swing when the operating mechanism performs a closing operation, and the opening transmission section is configured to drive the cam transmission member to swing when the operating mechanism performs an opening operation, so that the transmission drives the auxiliary switch rotating shaft 71 to rotate, thereby implementing a loop switching. When the cam transmission member is matched with the equal-diameter section, the distance between the matching part and the center of the cam is unchanged, and the equal-diameter section of the cam groove 61 cannot drive the cam transmission member to swing. When the cam transmission member is matched with the closing transmission section and the opening transmission section of the cam groove 61, the closing transmission section and the opening transmission section are used for guiding the swing of the cam transmission member.
The cam driving part is arranged at the front side of the auxiliary switch driving cam 6, the cam driving part is a cam driving connecting plate 11, a swinging shaft 13 is arranged on the frame, the swinging shaft 13 is positioned right below the driving shaft 5, the lower end of the cam driving connecting plate 11 in the length direction is assembled on the swinging shaft 13 in a swinging way, the swinging axis of the cam driving connecting plate 11 is parallel to the rotating axis of the driving shaft 5, the swing shaft 13 is formed by a screw rod part of a bolt, bolt through holes are respectively arranged on the front mounting plate 1 and the cam transmission connecting plate 11, two nuts are connected on the bolt, the two nuts are respectively positioned on the front side and the rear side of the front mounting plate 1 so as to fix the bolt on the front mounting plate 1 through the front nut and the rear nut, meanwhile, the cam transmission connecting plate 11 is rotatably sleeved on the screw rod part between the bolt end socket and the front side nut, and the bolt end socket and the front side nut axially limit the cam transmission connecting plate 11.
The cam transmission connecting plate 11 is provided with a first transmission pin 112 extending along the swinging axis of the cam transmission connecting plate, the first transmission pin 112 is a cylindrical pin and is welded and fixed on the cam transmission connecting plate 11, and the first transmission pin 112 extends into the cam groove 61 to be matched with the cam groove 61 so as to drive the cam transmission connecting plate 11 to swing when the auxiliary switch driving cam 6 rotates.
The auxiliary switch rotating shaft 71 is provided with an auxiliary switch transmission member 12 in an up-and-down rotation mode, the auxiliary switch transmission member 12 is a strip-shaped plate, one end of the auxiliary switch transmission member is provided with a thickened portion, the thickened portion is provided with an anti-rotation hole, and the anti-rotation hole is a square hole so as to form an anti-rotation fit with the square auxiliary switch rotating shaft 71. The one end of keeping away from auxiliary switch pivot 71 of auxiliary switch driving medium 12 is equipped with transmission slot hole 121, transmission slot hole 121 extends along the 12 length direction of auxiliary switch driving medium, cam drive is equipped with second transmission pin 113 for the last one end of leaning on in the length direction of board 11 even, second transmission pin 113 is cylindric lock and welded fastening on the cam driving medium, second transmission pin 113 stretches into in the transmission slot hole 121, in order to drive auxiliary switch driving medium 12 through the cooperation of second transmission pin 113 and transmission slot hole 121 and rotate when the cam driving medium swings, and then drive auxiliary switch pivot 71 through auxiliary switch driving medium 12 and rotate.
One end of the cam transmission connecting plate 11, which is far away from the swinging shaft 13, is provided with a widening section with a wider plate surface, the widening section is provided with an avoiding hole 111, the avoiding hole 111 extends along the direction perpendicular to the length direction of the cam transmission connecting plate 11, and the avoiding hole 111 is used for the auxiliary switch rotating shaft 71 to extend into so as to avoid the auxiliary switch rotating shaft 71 in the swinging process of the cam transmission connecting plate 11. Second drive pin 113 sets up the one side of keeping away from swing axle 13 in dodging hole 111, second drive pin 113 is located the both ends of cam drive even board 11 respectively with swing axle 13, and first drive pin 112 is in the middle part of cam drive even board 11, when auxiliary switch drive cam 6 drives the swing of cam drive spare through middle first drive pin 112 like this, second drive pin 113 that is in cam drive even board 11 tip can obtain great stroke, thereby conveniently satisfy auxiliary switch 7's turned angle demand, be favorable to reducing auxiliary switch drive cam 6's size simultaneously.
A microswitch mounting plate 14 is further fixed on the front side plate surface of the front mounting plate 1, the microswitch 8 is fixed on the microswitch mounting plate 14, the microswitch 8 comprises a first microswitch and a second microswitch which are arranged in parallel in the front and at the back, the first microswitch is used for being triggered after the opening operation of the switch operating mechanism is in place, the second microswitch is used for being triggered after the closing operation of the switch operating mechanism is in place, a microswitch triggering structure for triggering the microswitch 8 is further arranged on the driving shaft 5, the microswitch triggering structure comprises a microswitch driving cam 9 which is assembled on the driving shaft 5 in a rotation stopping manner, the microswitch driving cam 9 comprises a first microswitch driving cam and a second microswitch driving cam, the first microswitch driving cam is used for being matched with a contact on the first microswitch so as to trigger the first microswitch when rotating, the second microswitch driving cam is used for being matched with a contact on the second microswitch so as to trigger the second microswitch when rotating The convex point of the first micro-switch driving cam and the convex point of the second micro-switch driving cam are located at different positions in the circumferential direction of the driving shaft, the convex part of the first micro-switch driving cam and the convex part of the second micro-switch driving cam are arranged in a staggered mode, so that when the switch operating mechanism is located at a switching-off station or a switching-on station, the contact of one micro-switch is switched off, the contact of the other micro-switch is switched on, switching-on and switching-off control circuit switching is achieved by triggering different micro-switches, and switching-on and switching-off operation of the switch operating mechanism is controlled.
The cam transmission connecting plate 11 and the micro-switch driving cam 9 are both positioned at the front side of the auxiliary switch driving cam 6 in the axial direction, and the micro-switch driving cam 9, the auxiliary switch transmission piece 12, the cam transmission piece and the auxiliary switch driving cam 6 are sequentially arranged from front to back in the axial direction of the driving shaft 5. The microswitch 8 and the auxiliary switch 7 are located on diametrically opposite sides of the drive shaft 5. The drive shaft 5 is located between the swing shaft 13 and the auxiliary switch rotating shaft 71 in the direction along the length of the cam transmission member. The arrangement can fully utilize the circumferential space of the driving shaft 5 to arrange the microswitch 8, the auxiliary switch 7 and the corresponding transmission structure, and the structure is compact.
The front end of drive shaft 5 is provided with divide-shut brake sign 10, and divide-shut brake sign 10 superscript "branch", "close" word, can conveniently learn the divide-shut brake state of switch operating mechanism through divide-shut brake sign 10.
When the switch operating mechanism is in the opening operation position, as shown in fig. 5 and 6, the auxiliary switch 7 is in the opening state, the AC loop in the auxiliary switch 7 is on, and the first transmission pin 112 is located on the opening transmission section of the cam groove 61; when the driving shaft 5 rotates clockwise, the driving shaft 5 drives the auxiliary switch driving cam 6 to rotate, so that the first driving pin 112 on the cam driving link plate 11 moves along the track of the cam groove 61, the cam driving link plate 11 swings in a certain angle range, and further the motion is transmitted to the auxiliary switch rotating shaft 71 through the auxiliary switch transmission piece 12 through the second driving pin 113, when the switch operating mechanism is changed from the opening operation in-place state to the closing operation in-place state, the opening and closing indication plate is changed from the opening state to the closing state from the closing state, and as shown in fig. 7 and 8, the first driving pin 112 is located on the closing transmission section of the cam groove 61, the auxiliary switch 7 is changed from the opening state to the closing state, the loop in the auxiliary switch 7 is changed from the AC loop conduction to the BD loop conduction, and the switching of the circuit is completed.
In the whole transmission structure, the auxiliary switch driving cam and the cam transmission member, and the connection between the cam transmission member and the auxiliary switch transmission member are high pairs, the friction force of the connection part is small, and the friction loss in the transmission process can be reduced; the cam mechanism has a compact integral structure and lower installation space requirement, so that the integral structure is more compact, the integral strength is better, and meanwhile, the cam mechanism avoids the self-locking possibly generated by a connecting rod mechanism and moves more stably; and through setting up auxiliary switch and micro-gap switch simultaneously, utilize the interior circuit switching of auxiliary switch and output signal to indicating system in order to instruct divide-shut brake state, utilize micro-gap switch control switch operating mechanism's divide-shut brake circuit in order to control divide-shut brake operation, micro-gap switch is when triggering, and the signal sends in time, is favorable to improving the response speed of dividing-shut brake operation.
the present embodiment is different from embodiment 1 in that the cam groove in embodiment 1 is a through groove that penetrates both ends of the auxiliary switch driving cam. In this embodiment, the auxiliary switch driving cam has a cam groove formed on an end surface of one side thereof, and the cam groove has a groove bottom facing forward.
the present embodiment is different from embodiment 1 in that the cam transmission member in embodiment 1 is a cam transmission link plate. In the embodiment, the cam transmission member is of a cylindrical rod structure, in other embodiments, the cam transmission member can also comprise two connecting plates which are separated, one of the connecting plates is provided with a long hole, the other connecting plate is provided with a bolt through hole, and the two connecting plates are connected through a bolt and enable the length of the cam transmission member to be adjustable.
Embodiment 4 of the switch operating mechanism of the present invention:
the present embodiment is different from embodiment 1 in that the first drive pin and the second drive pin in embodiment 1 are welded and fixed to the cam drive member. In this embodiment, the first driving pin and the second driving pin are rotatably mounted on the cam driving member.
the present embodiment is different from embodiment 1 in that the auxiliary switch transmission member in embodiment 1 is a strip plate structure. In this embodiment, the auxiliary switch transmission member is a cylindrical rod structure.
the difference between this embodiment and embodiment 1 is that the cam driving member in embodiment 1 is provided with a second driving pin, and the auxiliary switch driving member is provided with a long driving hole. In this embodiment, the auxiliary switch driving member is provided with a second driving pin, and the cam driving member is provided with a driving slot.
the present embodiment is different from embodiment 1 in that the microswitch actuation structure in embodiment 1 is a microswitch actuation cam. In this embodiment, the micro switch triggering structure is a poke rod fixed on the driving shaft, and the poke rod is used for jacking and pressing the contact of the micro switch to realize closing.
this embodiment is different from embodiment 1 in that one end of the cam transmission member in the length direction in embodiment 1 is swingably fitted to the swing shaft, the second transmission pin is located at an end of the cam transmission member remote from the swing shaft, and the first transmission pin is located between the second transmission pin and the swing shaft. In this embodiment, one end of the cam driving member in the length direction is assembled on the swing shaft in a swinging manner, the first driving pin is located at one end of the cam driving member, which is far away from the swing shaft, and the second driving pin is located between the second driving pin and the swing shaft, so that the relative position of the auxiliary switch and the driving shaft is adapted to be adjusted, and the cam driving member and the movement of the driving cam of the auxiliary switch are ensured not to be interfered.
the difference between this embodiment and embodiment 1 is that the cam transmission connecting plate in embodiment 1 is provided with an avoiding hole, and the auxiliary switch rotating shaft extends into the avoiding hole. In this embodiment, the auxiliary switch transmission member is flush with the end face of the auxiliary switch rotating shaft, and the cam transmission connecting plate is not provided with the avoiding hole.
the present embodiment is different from embodiment 1 in that the auxiliary switch in embodiment 1 is used to output a signal to an indication system to indicate the switching on/off state, and the micro switch is used to control the switching on/off circuit of the switch operating mechanism to control the switching on/off operation. In the embodiment, the auxiliary switch and the micro switch both output signals to the signal system when the circuits are switched, the signal system can correspondingly indicate the corresponding opening and closing states when receiving any signal, and the auxiliary switch and the micro switch form position indication double confirmation, so that the use reliability is improved.
An embodiment of the switching electrical device of the invention:
the switch electrical equipment comprises a switch-off mechanism and a switch operating mechanism for operating the switch-off mechanism to be switched off, and the switch operating mechanism in the embodiment is the same as the switch operating mechanism described in any one of embodiments 1 to 10 of the switch operating mechanism, and the details are not repeated here.
Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and equivalents can be made in the technical solutions described in the foregoing embodiments without inventive effort, or some technical features of the present invention may be substituted with equivalents. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A switch operating mechanism comprises a rack, wherein an auxiliary switch is installed on the rack and used for providing signals of opening operation and closing operation of the operating mechanism, the auxiliary switch is provided with an auxiliary switch rotating shaft, a driving shaft is assembled on the rack in a rotating mode, the switch operating mechanism is characterized in that an auxiliary switch driving cam is assembled on the driving shaft in a rotating mode, a cam groove is formed in the auxiliary switch driving cam, a cam transmission part is assembled on the rack in a swinging mode, the swinging axis of the cam transmission part is parallel to the rotating axis of the auxiliary switch driving cam, a first transmission pin extending along the swinging axis direction of the cam transmission part is arranged on the cam transmission part and extends into the cam groove to be matched with the cam groove so as to drive the cam transmission part to swing when the auxiliary switch driving cam rotates, an auxiliary switch transmission part is assembled on the auxiliary switch rotating shaft in a rotating mode, and a second transmission pin is arranged on one of the auxiliary switch transmission part and the cam transmission part, and the other one is provided with a transmission long hole so as to drive the auxiliary switch transmission member to swing through the matching of the second transmission pin and the transmission long hole when the cam transmission member swings, and further drives the auxiliary switch rotating shaft to rotate.
2. The switch operating mechanism according to claim 1, wherein the cam groove extends in a circumferential direction of the auxiliary switch driving cam, and the cam groove includes a constant diameter section, a closing transmission section, and an opening transmission section, and the constant diameter section is located between the closing transmission section and the opening transmission section in an extending direction of the cam groove, the closing transmission section is configured to swing the cam transmission member when the switch operating mechanism performs a closing operation, and the opening transmission section is configured to swing the cam transmission member when the switch operating mechanism performs an opening operation.
3. The switch operating mechanism according to claim 1, wherein the frame is provided with a swing shaft, one end of the cam driving member in the longitudinal direction is swingably fitted to the swing shaft, the second driving pin is located at an end of the cam driving member remote from the swing shaft, and the first driving pin is located between the second driving pin and the swing shaft.
4. The switch operating mechanism of claim 3, wherein the second drive pin is disposed on the cam drive member and the drive slot is disposed on the auxiliary switch drive member.
5. The switch operating mechanism according to claim 1, wherein the cam driving member is a cam driving link plate, the cam driving link plate is provided with an escape hole, the auxiliary switch shaft extends into the escape hole, and the escape hole is used for avoiding the auxiliary switch shaft during the swing of the cam driving link plate.
6. The switch actuator of claim 3 wherein the drive shaft is located between the pivot shaft and the auxiliary switch shaft along the length of the cam actuator.
7. The switch actuator according to any one of claims 1-6, wherein the cam drive member is axially on the same side of the auxiliary switch drive cam as the microswitch actuation structure.
8. The switch actuator of claim 7 wherein the microswitch and the auxiliary switch are located on diametrically opposite sides of the drive shaft.
9. The switch operating mechanism of claim 7, wherein the microswitch actuation structure includes a microswitch drive cam which is rotatably mounted on the drive shaft, the microswitch drive cam being adapted to be rotated by the drive shaft to push contacts of the microswitch to actuate the microswitch.
10. The switch operating mechanism of claim 9, wherein the microswitch drive cam, the auxiliary switch drive member, the cam drive member, and the auxiliary switch drive cam are offset in the axial direction of the drive shaft.
11. The switch operating mechanism according to any one of claims 1 to 6, wherein the end of the drive shaft is provided with a switch-on/off indication plate.
12. A switch electrical apparatus comprising a switch-off mechanism and a switch operating mechanism for operating the switch-off mechanism to switch off, characterised in that the switch operating mechanism is as claimed in any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210204447.5A CN114864325A (en) | 2022-03-03 | 2022-03-03 | Switch operating mechanism and switch electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210204447.5A CN114864325A (en) | 2022-03-03 | 2022-03-03 | Switch operating mechanism and switch electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114864325A true CN114864325A (en) | 2022-08-05 |
Family
ID=82628090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210204447.5A Pending CN114864325A (en) | 2022-03-03 | 2022-03-03 | Switch operating mechanism and switch electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114864325A (en) |
-
2022
- 2022-03-03 CN CN202210204447.5A patent/CN114864325A/en active Pending
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