CN102306586A - Three-station isolation grounding switch operating mechanism of combined electrical appliance - Google Patents
Three-station isolation grounding switch operating mechanism of combined electrical appliance Download PDFInfo
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- CN102306586A CN102306586A CN201110255325A CN201110255325A CN102306586A CN 102306586 A CN102306586 A CN 102306586A CN 201110255325 A CN201110255325 A CN 201110255325A CN 201110255325 A CN201110255325 A CN 201110255325A CN 102306586 A CN102306586 A CN 102306586A
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Abstract
The invention relates to a three-station isolation grounding switch operating mechanism of a combined electrical appliance. A dividing device consisting of a dividing wheel, a dividing cam wheel and a movable key is sleeved on a worm wheel shaft close to one side of the output end; an electrical control device which consists of a dial sheet cam wheel, a dial pin cam wheel and a switch cam wheel and is matched with a guide plate in a dialing mode is sleeved at the outer end of the worm wheel shaft; the dial sheet cam wheel, the dial pin cam wheel and the gradient cam wheel are connected synchronously; and the dividing wheel and the worm wheel shaft are connected synchronously; and the rotation direction of a motor is controlled by two electromagnetic coils. The mechanism provided by the invention is inventive in design, is simple in structure, is reliable in action, is small in appearance and is light in weight; the mechanism is applied to 10kV-220kV two-station, three-station and multi-station switch operation; the mechanism can also be applied to other fields to move in a rotation mode or in a translation mode; different output torques can be obtained through regulating the motor power; the electrical loop is controlled only utilizing a position switch, thus the number of tip points of the switch cam wheel equals to the number of the working positions of the mechanism, and the mechanism can be used for the operation of a multi-station switch and other mechanical movements.
Description
Technical field
The present invention relates to, especially relate to a kind of combined electrical apparatus three station isolation earthing switch operating mechanisms.
Background technology
Combined electrical apparatus is isolated, the action request operating mechanism of earthed switch must possess many-sided performance: the first has the service position coupling of two stations or multistation operating position and switch; It two is to have certain moment of torsion, can guarantee the action of switch; It three is the generations that effectively prevent rub-out signal; It four is that the output angle is accurate, guarantees the switch service position and can be locked.
Reliability is high, miniaturization is the developing direction of device for switching product, and the isolation in the combined electrical apparatus, earthed switch can develop into multi-functional three stations, five stations by two stations from original unisexuality.Operating mechanism as the switch motion driving element also develops into present multistation from two original stations.
The current prior art, five-position actuator yet have no domestic manufacturers.Three stations are isolated, earthing switch operating mechanism breaks off closed-ended question again for solving " separating brake position " control switch, adopt " bi-motor ", " single motor+four contactor+four control switchs " and schemes such as " increase auxiliary relays ".Three stations of these schemes are isolated, there is common weak point in earthing switch operating mechanism:
The one, complex structure, volume are big: the operating mechanism volume forms restriction to the miniaturization Design of switch product greatly.Complex structure, mechanical drive train growing way must cause failure rate high, and direct threats is arrived the switch reliability of products.The big more weight of volume is big more, all can bring a lot of inconvenience to transmission, packing, transportation, preservation, assembling, the debugging of mechanism.
The 2nd, motor control loop is loaded down with trivial details, directly causes the control loop element too many, the operation trouble, and production cost significantly improves.Simultaneous faults point is many, inconvenient maintenance.
The 3rd, indexing accuracy is low: the debugging to switch causes trouble, influences production efficiency and switch complete machine quality.
The 4th, misleading possibly appear in the mechanism position electric signal.Be evenly equipped with four fixed contacts in the auxiliary switch circumference, moving contact is during by mechanism's output shaft driven in rotation ± 45 °, and four fixed contacts are alternately connected in twos, broken off, and externally export position of the switch electric signal and are used for procedure operation and electrical interlock.No matter switch is separating brake or closes a floodgate when all not in place that mechanism has externally exported switch and closed a floodgate or the separating brake position signalling, stops action if mechanism breaks down this moment, and especially the breaker operator consequence is very serious to carry out next-step operation according to this signal.
Summary of the invention
The object of the present invention is to provide a kind of compact conformation, calibration is accurate, locking position is reliable, electrical equipment control is simple, volume is little, in light weight, be used for 10kV-220kV combined electrical apparatus two stations and three station different angles isolation earthing switch and isolate the operating mechanism of ground connection unit switch action drives.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
A kind of combined electrical apparatus three station isolation earthing switch operating mechanisms of the present invention, the drive motors output that is installed on the fixed head is connected with worm-drive through gear, and worm and wheel is in transmission connection, and the outer end of worm screw is provided with manually and the electric blocking device.Described worm gear is set with index cam near on the worm-wheel shaft of output one side, and index cam is connected through flat key with worm gear and cooperates with worm-wheel shaft is movable; The cylindrical of said index cam is set with and the movable divided wheel that cooperates of index cam; Described divided wheel is the alms bowl type; The alms bowl wall of alms bowl type divided wheel is provided with radial slot; Be provided with in the radial slot and the movable draw key that cooperates of radial slot; The cylindrical of draw key and index cam is interrupted contact matching; The cylindrical of alms bowl type divided wheel is set with and the movable location-plate that cooperates of divided wheel, has on the interior circle of location-plate to be used to draw key location notch that draw key is moved radially; Location-plate is fixed on the frame, and alms bowl type divided wheel is connected with worm-wheel shaft through the horizontal key that is provided with in the divided wheel center hole synchronously, and the divided wheel center hole is connected with output device, and divided wheel cooperates with framework lateral plate is movable.
Described worm gear is set with and the movable drive sleeve that cooperates of worm-wheel shaft on the worm-wheel shaft of output one side, and drive sleeve is connected with worm gear with index cam through flat key synchronously, and drive sleeve is installed on the frame mounting panel and with the frame mounting panel is movable and cooperates; Be set with successively from inside to outside on the worm-wheel shaft in the frame mounting panel outside and movable group plane cam, finger cam, the switch cam that cooperates of worm-wheel shaft; Dialling plane cam is connected with drive sleeve through the axial bond that the finger cam is provided with the finger cam synchronously.
The below of the described group of plane cam, finger cam, switch cam is provided with the guide plate of ship shape; Guide plate is made up of interior guide plate, middle guide plate, the outer guide plate of two ends riveted joint; Guide plate is corresponding with group plane cam in said; Middle guide plate is corresponding with the finger cam, and outer guide plate is corresponding with the gap between finger cam and the switch cam.Middle part, guide plate top has a bayonet socket in said, is arranged with two arc bumps on the madial wall of bayonet socket, and arc bump is interrupted to contact with the outer working face of dialling plane cam and cooperates; Guide plate is the U type of hollow in said; The middle part is equipped with the trundle vertical with the plate face on the said outer guide plate, and outwards protrude at the two ends of trundle, and trundle is interrupted to stir with the finger cam to projecting inward position and cooperates, and the position that trundle outwards protrudes is installed in the draw-in groove that the switch cam bottom is provided with.
Described guide plate places on the guide pad that the frame mounting panel is provided with and with the guide pad upper surface is movable and cooperates; Both ends, guide plate bottom make progress recessed position respectively with the switch push rod one, switch push rod two contact matching that are located in the guide pad, switch push rod one, switch push rod two respectively be installed in switch frame in position switch group one, two controls of position switch group cooperate.
Described switch cam is fan-shaped, and the protrusion position of switch cam is a working face, and the depression position of switch cam is a non-working surface; Be respectively equipped with position controlling switch one, position controlling switch two on the frame mounting panel of the top of switch cam corresponding to switch cam both sides non-working surface, the switch contact arm of position controlling switch one, position controlling switch two is interrupted to contact with the working face of switch cam and cooperates.
The control switch group that is used to control the motor direction of rotation also is installed on the frame, and control switch group top is provided with and is used for two solenoids that two group three of touch control switch group opened, three closed contacts move.
Combinations thereof electrical equipment three station isolation earthing switch operating mechanisms, the frame mounting panel of described guide plate top is provided with two and is used for the guide finger that the restricted guidance plate moves up and down.
Combinations thereof electrical equipment three station isolation earthing switch operating mechanisms; Position corresponding to cylindrical at the bottom of the alms bowl of divided wheel on the described location-plate has a radial direction through hole; Be provided with steel ball that is used to increase mechanism's divided wheel resistance of motion when unloaded and the leaf spring that cooperates with steel ball in the radial direction through hole, the axial V-shaped groove that cylindrical is provided with at the bottom of the alms bowl of steel ball and divided wheel is interrupted to contact and cooperates.
Combinations thereof electrical equipment three station isolation earthing switch operating mechanisms, the number of described draw key is: 2,3,4 or 6, the operating angle of divided wheel output is 30 °-270 °.
Combinations thereof electrical equipment three station isolation earthing switch operating mechanisms, the outer end of described worm-wheel shaft are connected with the direction board that rotates synchronously with worm-wheel shaft, and the direction board subscript is shown with the on off state of different station.
Owing to take technique scheme; The invention has the beneficial effects as follows: when the present invention is used for three position mechanism; It is positive and negative rotation that three operating positions are reflected on the motor: by " close " to " separating brake ", by " separating brake " to " at a distance from closing " operation; Use is rotated counterclockwise electric control loop, by " at a distance from close " to " separating brake ", manipulate the electric control loop that turns clockwise by " separating brake " to " close ".The control switch of control loop during to " separating brake " position " breaks off closed " again; The control switch " breaking off the back keeps " in control corresponding loop during to " at a distance from close ", " close " position.But make mechanism in the bidirectional operation of separating brake position, when " ground connection ", " at a distance from closing " gate position, can only carry out " returning " motion action, prevent the generation of faulty operation.
Break off closed-ended question again for solving " separating brake position " control switch; This mechanism is through dialling the telecontrol equipment and the movement locus matching Design of plane cam, finger cam, switch cam, guide plate and switch push rod one, switch push rod two; The ingenious inertia that utilizes after the motor dead electricity makes electrical control, locking, position signalling output by the reliable completion of action program requirements.
The charged adhesive of solenoid T1 when " at a distance from closing " position operation from " separating brake " position; Its corresponding normally opened contact is closed; Mechanism rotates counterclockwise; The finger cam rotation drives trundle and makes the guide plate translation, drives the switch cam rotation; When the finger cam rotates to 180 ° of positions; Touch position controlling switch one action; Be rotated counterclockwise control loop disconnection, motor dead electricity; Guide plate is through two actions of switch push rod two compressing position switch groups, and external output " separating brake " position signalling breaks off, " at a distance from closing " position signalling is closed.Motor inertia stops index cam, 25 ° of entire mechanism actions of finger cam continuation rotation.Position controlling switch one keeps pressurized, is rotated counterclockwise control loop and keeps breaking off, and is rotated counterclockwise command with akinesia even provide again, has only return movement to operate, and the action of this moment is unique, prevents that false command from damage mechanism, switch.Solenoid T2 is charged when returning; Its corresponding normally opened contact is closed; Mechanism turns clockwise; Dial plane cam drive in guide plate make that the guide plate translation is returned, switch cam is rotated and returned; Switch cam is touched position controlling switch two actions during to 25 ° of positions; The control loop that turns clockwise breaks off, the motor dead electricity, and guide plate resets it through the compressing that switch push rod two discharges position switches set two, and position signalling breaks off, " separating brake " position signalling is closed in externally output " at a distance from closing ".Motor inertia makes index cam, dials 25 ° of plane cam continuation rotations, and the switch contact arm of control switch one, two gets into the depressed area of switch cam, and its contact discharges and resets, and the entire mechanism action stops.The motor positive and inverse control loop all can be accepted the instruction action, and promptly mechanism this moment can the bidirectional operation action.Mechanism by " separating brake " position to " close " position operation and when returning principle identical, electric loops, the external output mechanism of switch push rod one compressing position switch group one action " close " position electric signal is cut off in position controlling switch two actions when going.Position controlling switch one cut-out control loop resets again when returning.
The present invention adopts the design of coaxial calibration, compares with the sheave indexing mechanism or the frid mechanism calibration locking principle of like product, and under the same moment of torsion prerequisite of output, the area of plane reduces 50%, and compact conformation, calibration is accurate, locking is firm, reliable in action.
Because rotational resistance was less than draw key radial friction resistance when mechanism was unloaded, draw key can occurs and can not be pushed into the draw key location notch by index cam and cross or clamping stagnation setting operating position.The setting of leaf spring, steel ball is painstakingly to increase mechanism's divided wheel resistance that rotatablely moves when operating position when unloaded, still can be accurately when making mechanism unloaded, action message.
Adopt solenoid T1, T2 and control switch group combination replacement contactor, specific volume, weight, cost all reduce more than 80% mutually with the same parameter contactor to select the magnetic blow-out position switch for use.
With position switch group one, two and guide plate combination replacement auxiliary switch volume-diminished more than 50%.And solve a major issue: the electric misleading signal in the position of the switch.Mechanism postpones angle of rotation again and just externally exports switch position signal and signal and be output as quick crawl and prevent that effectively rub-out signal from taking place after output is rotated in place.
That the present invention designs is ingenious, simple in structure, reliable in action, profile are little, in light weight.Be applicable to 10kV-220kV two stations, three stations and the actuating of multistation switch.Also can be applicable to other field rotates or translational motion.Suitably regulate power of motor and can obtain different output torques, only, make the cusp number of switch cam and the identical operation that promptly can be used for multistation switch and other mechanical action of service position number of mechanism with a position switch control electric loop.
Other advantages of the present invention, target and characteristic will be set forth in specification subsequently to a certain extent; And to a certain extent; Based on being conspicuous to those skilled in the art, perhaps can from practice of the present invention, obtain instruction to investigating hereinafter.Target of the present invention and other advantages can be passed through following specification, claims, and the structure that is particularly pointed out in the accompanying drawing realizes and obtains.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail.
Fig. 1 is the main cross-sectional schematic of structure of the present invention.
Fig. 2 is the C-C cutaway view of Fig. 1
Fig. 3 is the B-B profile of Fig. 2
Fig. 4 is the A-A profile of Fig. 3
Fig. 5 is the D-D cutaway view of Fig. 1
Fig. 6 is the E-E cutaway view of Fig. 5
Fig. 7 is the vertical view of Fig. 5
Fig. 8 is the F-F cutaway view of Fig. 5
Fig. 9 for index cam of the present invention in rotation 0 ° the time and divided wheel, draw key relative position profile
Figure 10 is the working state schematic representation with the corresponding position switch group of Fig. 9 control assembly
Figure 11 for index cam of the present invention in rotation 58 ° the time and the profile of divided wheel, draw key relative position
Figure 12 is the working state schematic representation with the corresponding position switch group of Figure 11 control assembly
Figure 13 for index cam of the present invention in rotation 172 ° the time and divided wheel, draw key relative position profile
Figure 14 is the working state schematic representation with the corresponding position switch group of Figure 13 control assembly
Figure 15 for index cam of the present invention when the Rotate 180 ° and divided wheel, draw key relative position profile
Figure 16 is the working state schematic representation with the corresponding position switch group of Figure 15 control assembly
Figure 17 for index cam of the present invention in rotation 205 ° the time and divided wheel, draw key relative position profile
Figure 18 is the working state schematic representation with the corresponding position switch group of Figure 17 control assembly
When Figure 19 returns back to 170 ° for index cam of the present invention and divided wheel, draw key relative position profile
Figure 20 is the working state schematic representation with the corresponding position switch group of Figure 19 control assembly
When Figure 21 returns back to 56 ° for index cam of the present invention and divided wheel, draw key relative position profile
Figure 22 is the working state schematic representation with the corresponding position switch group of Figure 21 control assembly
When Figure 23 returns back to 25 ° for index cam of the present invention and divided wheel, draw key relative position profile
Figure 24 is the working state schematic representation with the corresponding position switch group of Figure 23 control assembly
Figure 25 looks sketch map for direction board master of the present invention
Figure 26 is motor rotation return lead schematic diagram of the present invention
Figure 27 is an electric control loop schematic circuit of the present invention
Figure 28 is a position signalling return lead schematic diagram of the present invention
Calibration embodiment when Figure 29 is 30 ° of working positions of the present invention's two stations
Calibration embodiment when Figure 30 is 270 ° of working positions of the present invention's two stations
Calibration embodiment when Figure 31 is 60 ° of working positions of the present invention's six stations
Calibration embodiment when Figure 32 is 90 ° of working positions of the present invention's four stations
Calibration embodiment when Figure 33 is 45 ° of working positions of the present invention's three stations
Figure mark: 1 - fixed plate 2 - Manually and electrical locking devices 3 - Worm 4 - position control switch a 5 - Worm 6 - position control switch two 7 - Reversal off cam? ? 8 - switch cam 9 - guide pin 10 - Activities key positioning groove 11 - drive pin 12 - dial plate cam 13 - rack-mounting plate 14 - guide plate 14-1 - the guide plate 14-2 - inner guide plate 14-3 - outer guide plates 15 - Putting a switch 16 - switch push rod two 17 - guide block 18 - electromagnetic coil? ? 19 - switch frame 20 - position switch set one 21 - Control switch group 22 - position switch group two 23 - curved bump 24 - axial V-groove 25 - Positioning board 26 - Activities keys 27 - indexing wheel 28 - indexing cam 29 - Cross keys 30 - worm shaft 31 - flat key 32 - gear sets 33 - Ball? ? 34 - spring 35 - signs 36 - Rack side panel 37 - switch cam Cusp
Embodiment
Like Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, shown in Figure 8; A kind of combined electrical apparatus three station isolation earthing switch operating mechanisms of the present invention; The drive motors output that is installed on the fixed head 1 is in transmission connection through gear and worm screw 3; Worm screw 3 is in transmission connection with worm gear 5, and the outer end of worm screw 3 is provided with manually and electric blocking device 2.Described worm gear 5 is set with index cam 28 near on the worm-wheel shaft 30 of output one side; Index cam 28 is connected by flat key 31 with worm gear 5 and cooperates with worm-wheel shaft 30 activities; The cylindrical of said index cam 28 is set with and the movable divided wheel 27 that cooperates of index cam; Described divided wheel 27 is the alms bowl type; The alms bowl wall of alms bowl type divided wheel 27 is provided with radial slot; Be provided with in the radial slot and the movable draw key 26 that cooperates of radial slot; Draw key 26 is interrupted contact matching with the cylindrical of index cam 28; The cylindrical of alms bowl type divided wheel 27 is set with and the movable location-plate 25 that cooperates of divided wheel; Have on the interior circle of location-plate 25 and be used to draw key locating slot 10 that draw key 26 is moved radially; Location-plate 25 is fixed on the frame; Alms bowl type divided wheel 27 is connected with worm-wheel shaft 30 by the horizontal key 29 that is provided with in the divided wheel center hole synchronously; Divided wheel 27 center holes are connected with output device, divided wheel 27 and 36 movable cooperations of framework lateral plate.
Described worm gear 5 is set with and the worm-wheel shaft 30 movable drive sleeve 32 that cooperate on the worm-wheel shaft 30 of output one side; Drive sleeve 32 is connected with worm gear 5 with index cam 28 through flat key 31 synchronously; Drive sleeve 32 is installed on the frame mounting panel 13 and with the frame mounting panel is movable and cooperates; Be set with successively from inside to outside on the worm-wheel shaft 30 in frame mounting panel 13 outsides and worm-wheel shaft 30 movable group plane cam 12, finger cam 7, the switch cam 8 that cooperate, dial plane cam 12 and be connected synchronously with drive sleeve 32 through the axial bond that finger cam 7 is provided with finger cam 7.
Described group of plane cam 12; Finger cam 7; The below of switch cam 8 is provided with the guide plate 14 of ship shape; Guide plate 14 is by the interior guide plate 14-2 of two ends riveted joint; Middle guide plate 14-1; Outer guide plate 14-3 forms; Guide plate 14-2 is corresponding with group plane cam 12 in said; Middle guide plate 14-1 is corresponding with finger cam 7; Outer guide plate 14-3 is corresponding with the gap between finger cam 7 and the switch cam 8; Middle part, guide plate 14-2 top has a bayonet socket in said; Be arranged with two arc bumps 23 on the madial wall of bayonet socket; Arc bump 23 is interrupted to contact with group plane cam 12 outer working faces and cooperates; Guide plate 14-1 is the U type of hollow in said; Said outer guide plate 14-3 goes up the middle part trundle vertical with the plate face 11 is installed; Outwards protrude at the two ends of trundle 11; Trundle 11 is interrupted to stir with finger cam 7 to projecting inward position and cooperates, and the trundle 11 outwards positions of protrusion is installed in the draw-in groove that switch cam 8 bottoms are provided with.
Described guide plate 14 places on the guide pad 17 that frame mounting panel 13 is provided with and with the guide pad upper surface is movable and cooperates; Both ends, guide plate 14 bottom make progress recessed position respectively with the switch push rod 1, switch push rod 2 16 contact matching that are located in the guide pad 17, switch push rod 1, switch push rod 2 16 respectively be installed in switch frame 19 in position switch group 1,2 22 controls of position switch groups cooperate.
Described switch cam 8 is fan-shaped, and the protrusion position of switch cam 8 is a working face, and the depression position of switch cam 8 is a non-working surface; Be respectively equipped with position controlling switch 1, position controlling switch 26 on the frame mounting panel 13 of the top of switch cam 8 corresponding to switch cam 8 both sides non-working surfaces, the switch contact arm of position controlling switch 1, position controlling switch 26 is interrupted to contact with the working face of switch cam 8 and cooperates;
The control switch group 21 that is used to control the motor direction of rotation also is installed on the frame, and control switch group 21 tops are provided with and are used for two solenoids 18 that 21 two group three of touch control switch group opened, three closed contacts move.
The frame mounting panel 13 of described guide plate 14 tops is provided with two and is used for the guide finger 9 that restricted guidance plate 14 moves up and down.
Position corresponding to cylindrical at the bottom of the alms bowl of divided wheel 27 on the described location-plate 25 has a radial direction through hole; Be provided with steel ball 33 that is used to increase mechanism's divided wheel resistance of motion when unloaded and the leaf spring 34 that cooperates with steel ball in the radial direction through hole, the axial V-shaped groove 24 that cylindrical is provided with at the bottom of the alms bowl of steel ball 33 and divided wheel 27 is interrupted to contact and cooperates.
The number of described draw key 26 is: 2,3,4 or 6, index cam 28 is 30 °-270 ° with the operating angle of divided wheel 27 outputs.According to the quantity of draw key 26, change the installation site of draw key 26 on divided wheel 27 and the shape of index cam 28, two stations are to the coaxial calibration locking of six station switch different operating angles: between 30 °-270 °, all can realize.
The direction board 35 that the outer end of worm-wheel shaft 30 is connected with and worm-wheel shaft rotates synchronously, direction board 35 subscripts are shown with the on off state of different stations such as " close ", " separating brake ", " at a distance from closing ".
Operation principle: with three stations ± 114 a ° isolation-ground connection unit switch operating mechanism is example: a course of action can be divided into: unloaded release-rotation calibration-location dropout-locking was stopped for four steps.
Like Fig. 2, Fig. 9, shown in Figure 10, mechanism's initial position is " separating brake " state:
At this moment, mechanical location: it is locked that divided wheel 27 is in 0 ° of position, and index cam 28, group plane cam 12, finger cam 7, switch cam 8 are in 0 ° of position, and guide plate 14 is positioned at the center.The radial motion of index cam 28 constraint draw key 26B, draw key 26C, that is the relative motion of restriction divided wheel 27 and location-plate 25.
Electric state: position controlling switch 1, position controlling switch 26, switch push rod 1, switch push rod 2 16 are in release condition, and motor is contrary, the control loop that turns clockwise all can receive signalizing activity.Mechanism externally exports " separating brake " position electric signal.
When requiring isolating switch to close a floodgate; The T1 adhesive of solenoid 18; Moving iron core promotes three control switch SL1, SL2, the SL3 action in the control switch group 21; Its normally opened contact is closed; Motor is rotated counterclockwise circuit closed; Motor is rotated counterclockwise work, drives index cam 28 and rotates counterclockwise through worm screw 3, worm gear 5.
Like Fig. 2, Figure 11, shown in Figure 12, the unloaded release of mechanism:
The mechanical location of this moment: index cam 28, group plane cam 12, finger cam 7 are in 58 ° of positions; Switch cam 8 is in 0 ° of position; Divided wheel 27 is in 0 ° of position; Guide plate 14 is in the center.
The electric state of this moment: maintain the original state.
Like Fig. 2, Figure 13, shown in Figure 14, mechanism's rotation calibration:
The mechanical location of this moment: index cam 28, group plane cam 12, finger cam 7 are in the position near 172 °; Switch cam 8 is in the position near 18 °; Divided wheel 27 is near 114 ° of positions; Guide plate 14 moves to right.
The electric state of this moment: maintain the original state.
Like Fig. 2, Figure 15, shown in Figure 16, mechanism threads off the location:
Draw key 26A is near losing back pressure in the location-plate 25 during draw key location notch 10 positions gradually; Because the rotational resistance that divided wheel 27 drives load is far longer than draw key 26 radial motion frictional resistance; Index cam 28 continues rotation, and the radial motion that componental movement will be converted into draw key 26A makes it to get into fully in the location-plate 25 draw key location notchs 10.Index cam 28 is in transmission connection with draw key 26A disengaging.
The mechanical location of this moment: index cam 28, group plane cam 12, finger cam 7 are in 180 ° of positions; Divided wheel 27 is in 114 ° of positions; Switch cam 8 is in 25 ° of positions, guide plate 14 moves to right and touches position controlling switch 1,2 22 actions of position switch group.
The electric state of this moment: position controlling switch 1,2 22 actions of position switch group, position controlling switch one 4 normally-closed contacts break off, and be rotated counterclockwise control loop and break off, the T1 dead electricity of solenoid 18, electric motor loop breaks off; The normally-closed contact of position switch group 2 22 breaks off, normally opened contact is closed, and " separating brake " position electric signal is broken off, " at a distance from closing " position electric signal is closed.
Like Fig. 2, Figure 17, shown in Figure 180, mechanism's locking is stopped:
Because motor inertia index cam 28, dial plane cam 12, finger cam 7 continues rotation synchronously, the radial motion of index cam 28 restraint key 26A, that is freely the rotating of restriction divided wheel 27, outgoing position are by locking.Position controlling switch 1 normally-closed contact that still suffers oppression breaks off.Stop when moving to about 205 °.
The mechanical location of this moment: index cam 28, group plane cam 12, finger cam 7 are in about 205 ° of positions; Divided wheel 27 is in 114 ° of positions; Switch cam 8 is in about 50 ° of positions.
The electric state of this moment: be rotated counterclockwise that control loop keep to break off, the control loop that turns clockwise is awaited orders action; " separating brake " position signalling keeps breaking off, " at a distance from closing " position signalling remains closed.
This moment, mechanism accomplished from the separating brake position to separated 114 ° of whole course of action of corner of closing position.
Course of action was similarly for four steps when returning the separating brake position.Electrical control is charged by the T2 of solenoid 18, and its moving unshakable in one's determination action makes SL4, SL5, the SL6 normally opened contact in the control switch group 21 closed, the work that turns clockwise of the motor circuit closed that turns clockwise, motor, and index cam 28 is back to 0 ° from 205 °.
Return the first step: the unloaded release of mechanism, like Figure 19, shown in Figure 20, mechanical location: index cam 28, group plane cam 12, finger cam 7 are back to 170 ° of positions; Switch cam 8 is in 50 ° of positions; Divided wheel 27 is in 114 °.
Returned for second step: mechanism's rotation calibration, like Figure 21, shown in Figure 22, mechanical location: index cam 28, group plane cam 12, finger cam 7 are back to 56 ° of positions; Switch cam 8 is back to 47 ° of positions; Divided wheel 27 is back to 0 ° of position.
Returned for the 3rd step: mechanism threads off the location, like Figure 23, shown in Figure 24,
Mechanical location: index cam 28, group plane cam 12, finger cam 7 are back to 25 ° of positions; Switch cam 8 is back to 25 ° of positions; Divided wheel 27 is in 0 ° of position.
Returned for the 4th step: mechanism's locking is stopped and is got back to initial bit, and like Fig. 9, shown in Figure 10, mechanical location: index cam 28, group plane cam 12, finger cam 7, switch cam 8, divided wheel 27 all are back to 0 ° of position.
Difference is: index cam 28 promotes draw key 26B and gets back to original position; Guide plate 14-2 makes guide plate 14 and switch cam 8 returns in plane cam 12 drivings by dialling; Cutting off electric loop is position controlling switch 26, and its normally-closed contact breaks off the back and recovers closed by motor inertia, and the rotating control loop all is in the operate condition of awaiting orders when making mechanism get back to " separating brake " position.
Mechanism " close " operation and return action principle are the same with " separated closing " operational motion principle.The T2 of solenoid 18 is charged, motor turns clockwise, position controlling switch 26 cut-off loops are " close " operation, and the T1 of solenoid 18 is charged, motor is rotated counterclockwise, position controlling switch one 4 cut-off loops are " separating brake " operation.
Like Fig. 1, Figure 25, Figure 26, Figure 27, shown in Figure 28; Mechanism with the movement position of index cam 28 as controlled target; No matter divide, closing operation; An action from start to end; About 205 ° of index cam 28 rotations; Electric control loop breaks off when 180 ° of positions, stops 180-205 ° of mechanism's completion locking, motion.Its corresponding electric control loop control switch when arriving " at a distance from closing " with " close " position: the normally-closed contact of position controlling switch 1 or position controlling switch 26 breaks off also maintenance, only returns electric control loop and is in the operate condition of awaiting orders; Its electric control loop control switch when returning " separating brake " position: the normally-closed contact of position controlling switch 1 or position controlling switch 26 breaks off reclosing and closes, and keeps the two-way Spin Control of motor loop all to be in the operate condition of awaiting orders.The electric position signalling of correspondence is exported in the position signalling loop respectively in three position of the switch of " separating brake ", " at a distance from close " and " close ".
Rotational resistance was less than draw key radial friction resistance when mechanism was unloaded, draw key 26 can occur and can not be pushed into draw key location notch 10 by index cam 27 and cross or clamping stagnation setting operating position.The setting of leaf spring 38, steel ball 37 is painstakingly to increase mechanism's divided wheel resistance that rotatablely moves when operating position when unloaded, still can be accurately when making mechanism unloaded, action message.
When being used for three position mechanism; It is positive and negative rotation that three operating positions are reflected on the motor: by " close " to " separating brake ", by " separating brake " to " at a distance from closing " operation; Use is rotated counterclockwise electric control loop, by " at a distance from close " to " separating brake ", manipulate the electric control loop that turns clockwise by " separating brake " to " close ".The control switch of control loop during to " separating brake " position " breaks off closed " again; The control switch in control corresponding loop " breaks off also and keeping " during to " at a distance from close ", " close " position.But make mechanism in the bidirectional operation of separating brake position, when " ground connection ", " at a distance from closing " position, can only carry out " returning " motion action, prevent the generation of faulty operation.
Break off closed-ended question again for solving " separating brake position " control switch; The present invention is through dialling the telecontrol equipment and the movement locus matching Design of plane cam 12, finger cam 7, switch cam 8, guide plate 14 and switch push rod 1, switch push rod 2 16; The ingenious inertia that utilizes after the motor dead electricity makes electrical control, locking, signal output by the reliable completion of action program requirements.
The charged adhesive of T1 of solenoid 18 when " at a distance from closing " position operation from " separating brake " position; Mechanism rotates counterclockwise; Finger cam 7 rotating drive trundles 11 make guide plate 14 translations, drive switch cam 8 rotations; When finger cam 7 rotates to 180 ° of positions; Touch position controlling switch one 4 actions; Be rotated counterclockwise control loop disconnection, motor dead electricity; Guide plate 14 is through 2 22 actions of switch push rod 2 16 compressing position switch groups, and external output " separating brake " position signalling breaks off, " at a distance from closing " position signalling is closed.Motor inertia stops index cam 28,25 ° of entire mechanism actions of finger cam 7 continuation rotations.Position controlling switch 1 keeps pressurized; Be rotated counterclockwise control loop and keep breaking off, be rotated counterclockwise command with akinesia, have only return movement to operate even provide again; The action of this moment is unique, prevents that false command from damage mechanism, switch.The T2 of solenoid 18 is charged when returning; Mechanism turns clockwise; Dial plane cam 12 drive in guide plate 14-2 make that guide plate 14 translations are returned, switch cam 8 is rotated and returned; Switch cam 8 is touched position controlling switch 26 actions during to 25 ° of positions; The control loop that turns clockwise breaks off, the motor dead electricity; Guide plate resets it through the compressing that switch push rod 2 16 discharges position switches set 2 22, and position signalling breaks off, " separating brake " position signalling is closed in externally output " at a distance from closing ".Motor inertia makes index cam 28, dials 25 ° of plane cam 12 continuation rotations, and the switch contact arm of control switch one 4,26 gets into the depressed area of switch cam 8, and its contact discharges and resets, and the entire mechanism action stops.The motor positive and inverse control loop all can be accepted the instruction action, and promptly mechanism this moment can the bidirectional operation action.Mechanism by " separating brake " position to " close " position operation and when returning principle identical, when going position controlling switch 26 actions cut off electric loops and keep, the external output mechanism of switch push rod one 15 compressing position switch groups one 20 actions " close " position electric signal.Position controlling switch one 4 cut-out control loops reset again when returning.
Embodiment 1:
As shown in figure 29, be the calibration embodiment of 30 ° of two stations
Embodiment 2:
As shown in figure 30, be the calibration embodiment of 270 ° of two stations
Embodiment 3:
As shown in figure 31, be the calibration embodiment of 60 ° of six stations
Embodiment 4:
Shown in figure 32, be the calibration embodiment of 90 ° of four stations
Embodiment 1:
As shown in figure 33, be the calibration embodiment of 45 ° of three stations
According to the quantity of draw key 26, change the installation site of draw key 26 on divided wheel 27 and the shape of index cam 28, two stations are latched between 30 °-270 ° to the coaxial calibration of six station switch different operating angles and all can realize.
Explanation is at last; Above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Other modifications that those of ordinary skills make technical scheme of the present invention perhaps are equal to replacement; Only otherwise break away from the spirit and scope of technical scheme of the present invention, all should be encompassed in the middle of the claim scope of the present invention.
Claims (5)
1. combined electrical apparatus three station isolation earthing switch operating mechanisms; The drive motors output that is installed on the fixed head (1) is in transmission connection by gear and worm screw (3); Worm screw (3) is in transmission connection with worm gear (5); The outer end of worm screw (3) is provided with manually and electric blocking device (2); It is characterized in that: described worm gear (5) is set with index cam (28) near on the worm-wheel shaft (30) of output one side; Index cam (28) is connected by flat key (31) with worm gear (5) and cooperates with worm-wheel shaft (30) is movable; The cylindrical of said index cam (28) is set with and the movable divided wheel (27) that cooperates of index cam; Described divided wheel (27) is the alms bowl type; The alms bowl wall of alms bowl type divided wheel (27) is provided with radial slot; Be provided with in the radial slot and the movable draw key (26) that cooperates of radial slot; Draw key (26) is interrupted contact matching with the cylindrical of index cam (28); The cylindrical of alms bowl type divided wheel (27) is set with and the movable location-plate (25) that cooperates of divided wheel; Have on the interior circle of location-plate (25) and be used to draw key locating slot (10) that draw key (26) is moved radially; Location-plate (25) is fixed on the frame; Alms bowl type divided wheel (27) is connected with worm-wheel shaft (30) by the horizontal key (29) that is provided with in the divided wheel center hole synchronously; Divided wheel (27) center hole is connected with output device, and divided wheel (27) cooperates with framework lateral plate (36) is movable;
Described worm gear (5) is set with and the movable drive sleeve (32) that cooperates of worm-wheel shaft (30) on the worm-wheel shaft (30) of output one side; Drive sleeve (32) is connected with worm gear (5) with index cam (28) through flat key (31) synchronously; Drive sleeve (32) is installed in frame mounting panel (13) and upward and with the frame mounting panel is movable cooperates; Be set with successively from inside to outside on the worm-wheel shaft (30) in frame mounting panel (13) outside and the movable group plane cam (12) that cooperates of worm-wheel shaft (30); Finger cam (7); Switch cam (8) is dialled plane cam (12) and is connected synchronously with drive sleeve (32) through the axial bond that finger cam (7) is provided with finger cam (7);
Described group of plane cam (12); Finger cam (7); The below of switch cam (8) is provided with the guide plate (14) of ship shape; Guide plate (14) is by the interior guide plate (14-2) of two ends riveted joint; Middle guide plate (14-1); Outer guide plate (14-3) is formed; Guide plate (14-2) is corresponding with group plane cam (12) in said; Middle guide plate (14-1) is corresponding with finger cam (7); Outer guide plate (14-3) is corresponding with the gap between finger cam (7) and the switch cam (8); Guide plate (14-2) middle part, top has a bayonet socket in said; Be arranged with two arc bumps (23) on the madial wall of bayonet socket; Arc bump (23) is interrupted to contact with the outer working face of dialling plane cam (12) and cooperates; Guide plate (14-1) is the U type of hollow in said; Said outer guide plate (14-3) is gone up the middle part trundle vertical with the plate face (11) is installed; Outwards protrude at the two ends of trundle (11); Trundle (11) is interrupted to stir with finger cam (7) to projecting inward position and cooperates, and trundle (11) the outwards position of protrusion is installed in the draw-in groove that switch cam (8) bottom is provided with;
The guide pad (17) that described guide plate (14) places frame mounting panel (13) to be provided with is gone up and is cooperated with the guide pad upper surface is movable; Both ends, guide plate (14) bottom make progress recessed position respectively with the switch push rod one (15), switch push rod two (16) contact matching that are located in the guide pad (17), switch push rod one (15), switch push rod two (16) respectively be installed in switch frame (19) in position switch group one (20), two (22) controls of position switch group cooperate;
Described switch cam (8) is fan-shaped, and the protrusion position (37) of switch cam (8) is a working face, and the depression position of switch cam (8) is a non-working surface; Be respectively equipped with position controlling switch one (4), position controlling switch two (6) on the frame mounting panel (13) of the top of switch cam (8) corresponding to switch cam (8) both sides non-working surface, the switch contact arm of position controlling switch one (4), position controlling switch two (6) is interrupted to contact with the working face of switch cam (8) and cooperates;
The control switch group (21) that is used to control the motor direction of rotation also is installed on the frame, and control switch group (21) top is provided with and is used for two solenoids (18) that touch control switch group (21) three is opened, three closed contacts move.
2. combined electrical apparatus three station isolation earthing switch operating mechanisms according to claim 1 is characterized in that: the frame mounting panel (13) of described guide plate (14) top is provided with two and is used for the guide finger (9) that restricted guidance plate (14) moves up and down.
3. combined electrical apparatus three station isolation earthing switch operating mechanisms according to claim 1; It is characterized in that: the position that described location-plate (25) is gone up corresponding to cylindrical at the bottom of the alms bowl of divided wheel (27) has a radial direction through hole; Be provided with steel ball (33) that is used to increase mechanism's divided wheel resistance of motion when unloaded and the leaf spring (34) that cooperates with steel ball in the radial direction through hole, the axial V-shaped groove (24) that cylindrical is provided with at the bottom of the alms bowl of steel ball (33) and divided wheel (27) is interrupted to contact and cooperates.
4. combined electrical apparatus three station isolation earthing switch operating mechanisms according to claim 1; It is characterized in that: the number of described draw key (26) is: 2,3,4 or 6, the operating angle of index cam (28) and divided wheel (27) output is 30 °-270 °.
5. combined electrical apparatus three station isolation earthing switch operating mechanisms according to claim 1; It is characterized in that: the outer end of described worm-wheel shaft (30) is connected with the direction board (35) that rotates synchronously with worm-wheel shaft, and direction board (35) subscript is shown with the on off state of different station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110255325A CN102306586A (en) | 2011-08-27 | 2011-08-27 | Three-station isolation grounding switch operating mechanism of combined electrical appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110255325A CN102306586A (en) | 2011-08-27 | 2011-08-27 | Three-station isolation grounding switch operating mechanism of combined electrical appliance |
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| Publication Number | Publication Date |
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| CN102306586A true CN102306586A (en) | 2012-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110255325A Pending CN102306586A (en) | 2011-08-27 | 2011-08-27 | Three-station isolation grounding switch operating mechanism of combined electrical appliance |
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| CN103165311A (en) * | 2012-12-24 | 2013-06-19 | 刘晓颖 | Electric interlock mechanism |
| CN103681026A (en) * | 2012-09-20 | 2014-03-26 | 株式会社安川电机 | Switch |
| CN105134930A (en) * | 2015-09-29 | 2015-12-09 | 天津百利机械装备集团有限公司中央研究院 | Intermittent movement generator |
| CN107946129A (en) * | 2017-11-30 | 2018-04-20 | 广州白云电器设备股份有限公司 | A kind of operating mechanism of high-tension switch gear tri-station isolating switch |
| CN109494089A (en) * | 2018-11-26 | 2019-03-19 | 浙江博为电气有限公司 | A kind of three station spring operating mechanisms |
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| CN107946129A (en) * | 2017-11-30 | 2018-04-20 | 广州白云电器设备股份有限公司 | A kind of operating mechanism of high-tension switch gear tri-station isolating switch |
| CN107946129B (en) * | 2017-11-30 | 2023-09-15 | 广州白云电器设备股份有限公司 | Operating mechanism of three-station isolating switch of high-voltage switch equipment |
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| CN109494089B (en) * | 2018-11-26 | 2019-10-08 | 浙江博为电气有限公司 | A kind of three station spring operating mechanisms |
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Application publication date: 20120104 |