CN211788780U - Load switch three-station mechanism with brake separating tripping function - Google Patents
Load switch three-station mechanism with brake separating tripping function Download PDFInfo
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- CN211788780U CN211788780U CN202020831271.2U CN202020831271U CN211788780U CN 211788780 U CN211788780 U CN 211788780U CN 202020831271 U CN202020831271 U CN 202020831271U CN 211788780 U CN211788780 U CN 211788780U
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Abstract
The utility model relates to a load switch three-station mechanism with brake separating and tripping, which comprises a shell, wherein a load switch operating shaft is arranged on the shell, and the load switch operating shaft is suitable for reciprocating rotation at an electrified brake closing position and an electrified brake separating position; the energy storage device is connected with the load switch operating shaft, and when the load switch operating shaft rotates to the power-on switching-on position, the energy storage device is driven to perform energy storage operation; the opening tripping mechanism is suitable for carrying out locking and releasing operations on the load switch operating shaft at the electrified opening position. The state of the load switch operating shaft at the power-on switching-on position can be controlled through the energy storage device and the switching-off tripping mechanism, the rapid switching-off tripping of the load switch operating shaft can be realized, the load switch operating shaft is switched from the power-on switching-on position to the power-off switching-off position, and then the output of the load switch is controlled to be switched from the load switch switching-on position to the load switch switching-off position.
Description
Technical Field
The utility model relates to a take load switch three-station mechanism of separating brake dropout.
Background
The three-station load switch realizes the closing, opening and grounding states of the load switch by rotating the output shaft at three stations (a load switch closing position, a load switch opening position and a load switch connecting position);
the three-station mechanism with the separating brake tripping load switch is provided with a load switch operating shaft and a grounding shaft, the load switch operating shaft rotates between a power-on separating brake position and a power-off separating brake position, and the grounding shaft rotates back and forth between the grounding separating brake position and the grounding separating brake position. When the load switch operating shaft is in the power-off opening position, the grounding shaft is rotated from the grounding opening position to the grounding closing position, and the output shaft is controlled to be rotated to the load switch connection position (namely, the load switch is grounded).
The existing load switch mechanism with the brake separating tripping function has the disadvantages of complex structure, poor stability and short service life.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the three-station mechanism of the load switch overcomes the defects of the prior art, provides the three-station mechanism of the load switch with the opening tripping function, and solves the problem that the three-station mechanism of the load switch can not be used for rapidly opening the opening.
The utility model provides a technical scheme that its technical problem adopted is: a load switch three-station mechanism with a brake separating and tripping function comprises a shell, wherein a load switch operating shaft is arranged on the shell and is suitable for reciprocating rotation at an electrified brake closing position and an electrified brake separating position;
the energy storage device is connected with the load switch operating shaft, and when the load switch operating shaft rotates to the power-on switching-on position, the energy storage device is driven to perform energy storage operation;
the brake separating and tripping mechanism is suitable for carrying out locking and releasing operations on the load switch operating shaft at the electrified brake closing position;
when the load switch operating shaft of the power-on switching-on position is locked by the tripping mechanism, the tripping mechanism limits the load switch operating shaft to rotate in a releasing manner towards the power-off switching-on position;
when the opening tripping mechanism is disconnected with the load switch operating shaft of the power-on opening position, the energy storage device releases energy storage and drives the load switch operating shaft to rotate to the power-off opening position.
Further, the energy storage device comprises a positioning sleeve, a coil spring, a rotating sleeve and an energy storage cam;
the energy storage cam is fixedly connected with the load switch operating shaft, and a bayonet used for being locked and disengaged with the brake separating tripping mechanism is arranged on the energy storage cam;
the rotary sleeve and the coil spring are positioned in the positioning sleeve, and two ends of the coil spring are respectively connected with the positioning sleeve and the rotary sleeve; the rotating sleeve is fixedly connected with the energy storage cam;
the load switch operating shaft drives a coil spring to store energy through an energy storage cam and a rotating sleeve.
Furthermore, the brake-separating tripping mechanism comprises a lock rod and a half shaft;
the middle part of the lock rod is rotationally connected with the shell, one end of the lock rod is provided with a clamping hook part which is matched with the upper bayonet of the energy storage cam, and the other end of the lock rod is provided with a butting part;
the half shaft is rotationally connected with the shell, and a shedding part and a buckling part are formed at the end part of the half shaft;
when the abutting part of the lock rod abuts against the buckling part of the half shaft, the clamping hook part of the lock rod hooks the bayonet of the energy storage cam so as to buckle and lock the load switch operating shaft at the power-on switching-on position;
when the lock rod abutting part rotates through the half shaft disengaging part, the lock rod rotates to enable the clamping hook part to depart from the energy storage cam bayonet, and then the energy storage device releases and drives the load switch operating shaft to turn to the power-off brake-separating position.
Further, the fixed mounting panel that sets up on the semi-axis, the fixed depression bar that sets up of mounting panel one end, set up the gyro wheel on the depression bar, set up the button that can be up-and-down elastic motion on the casing, form on the button and be used for with gyro wheel complex inclined plane, the button is pushed down when the inclined plane butt gyro wheel is in order to drive the semi-axis and is rotated.
Further, the device also comprises a grounding operation shaft and an output shaft;
an upper crank arm and an upper driving cam are fixedly arranged on the load switch operating shaft in a sleeved mode;
a lower crank arm and a lower driving cam are fixedly arranged on the grounding operation shaft in a sleeved mode; the grounding operation shaft is suitable for reciprocating rotation at a grounding opening position and a grounding closing position;
the upper crank arm and the lower crank arm are connected with a switching-on/off spring;
an output cam is fixedly arranged on the output shaft, and the output shaft rotates in a reciprocating manner at a load switch closing position, a load switch opening position and a load switch connection position in sequence;
when the load switch operating shaft drives the output shaft to rotate to a load switch on position through the upper crank arm, the upper driving cam and the output cam, the grounding operating shaft is in a grounding brake-separating position, and the load switch operating shaft is in a power-on brake-closing position;
when the load switch operating shaft drives the output shaft to rotate to the load switch opening position through the upper crank arm, the upper driving cam and the output cam, the grounding operating shaft is positioned at the grounding opening position, and the load switch operating shaft is positioned at the power-off opening position;
when the grounding operation shaft drives the output shaft to rotate to the connection position of the load switch through the lower crank arm, the lower driving cam and the output cam; the grounding operation shaft is positioned at a grounding switch-on position, and the load switch operation shaft is positioned at a power-off switch-off position.
Further, the upper driving cam comprises a first upper driving part, a second upper driving part and a third upper driving part, and the first upper driving part is provided with an upper driving pin matched with the output cam;
the upper crank arm is provided with an upper hanging opening and an upper hanging pin; a lower hanging opening and a lower hanging pin are arranged on the lower crank arm;
an upper limiting rod and a lower limiting rod are fixedly arranged on the shell;
the lower driving cam comprises a first lower driving part, a second lower driving part and a third lower driving part, and the first lower driving part is provided with a lower driving pin matched with the output cam;
the output cam is provided with an upper driving groove matched with the upper driving pin and a lower driving groove matched with the lower driving pin.
Furthermore, when the load switch operating shaft is in a power-on switching-on position, the upper crank arm is stressed to rotate, the upper crank arm is abutted to the second upper driving part of the upper driving cam through the upper hanging pin so as to drive the upper driving cam to rotate, the upper driving cam drives the output cam to rotate through the upper driving pin, and the upper crank arm and the upper driving cam stop rotating after the upper driving cam rotates to the position where the third upper driving part is abutted to the upper limiting rod;
when the load switch operating shaft is in a power-off opening position, the upper crank arm is stressed to rotate, the third upper driving part of the upper driving cam is abutted and rotated by the upper hanging pin of the upper crank arm, the upper driving cam drives the output cam to rotate by the upper driving pin, and the upper crank arm and the upper driving cam stop rotating until the upper hanging opening of the upper crank arm is abutted and rotated by the upper limiting rod;
when the grounding operation shaft is used for grounding brake opening, the lower crank arm is stressed to rotate, the lower crank arm is abutted to the second lower driving part of the lower driving cam through the lower hanging pin so as to drive the lower driving cam to rotate, and the lower driving cam stop rotating after the lower driving cam rotates until the third lower driving part is abutted to the lower limiting rod;
when the grounding operation shaft is used for grounding and closing, the lower crank arm is stressed to rotate, the third lower driving part of the lower driving cam is abutted and rotated by the lower hanging pin of the lower crank arm, the lower driving cam drives the output cam to rotate by the lower driving pin, and the lower crank arm and the lower driving cam stop rotating until the lower hanging opening of the lower crank arm is abutted and rotated by the lower limiting rod.
Furthermore, the load switch three-station mechanism further comprises an on-off brake indicating mechanism, and the on-off brake indicating mechanism comprises a first indicating shaft, a second indicating shaft, a first gear, a second gear, a third gear, a fourth gear and an indicating disc;
the first indicating shaft and the second indicating shaft are connected with the shell, an indicating disc is fixedly arranged at one end of the first indicating shaft, a first gear is arranged at the other end of the first indicating shaft, the second gear and the third gear are both arranged on the second indicating shaft, the fourth gear is arranged on the output shaft, the second gear is meshed with the first gear, and the third gear is meshed with the fourth gear.
Furthermore, a speed reducing motor is arranged on the shell and connected with the load switch operating shaft.
The utility model has the advantages that:
the utility model provides a take three station mechanisms of load switch of separating brake dropout can control the load switch operating axis through energy memory and separating brake tripping device and at the state of circular telegram closing position, can realize switching off the quick separating brake dropout of load switch operating axis, switches the load switch operating axis to outage separating brake position from circular telegram closing position, then controls the output of load switch and is switched to load switch separating brake position by load switch closing position.
The load switch three-station mechanism is simple in structure and stable and reliable in operation, the crank arms drive the output cam to rotate through the driving cam respectively, and then the output cam drives the output shaft to reciprocate among the three stations, so that the whole load switch is higher in transmission stability, longer in mechanical life and capable of accumulating more than ten thousand times.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a three-position mechanism of a load switch when an opening tripping mechanism of the load switch locks an operation shaft of the load switch of a power-on switching position;
FIG. 2 is a schematic diagram of a three-position mechanism of a load switch when a separating brake tripping mechanism is buckled with an operating shaft of the load switch of a power-on switching position;
FIG. 3 is a structural diagram of the half shaft, the mounting plate and the roller button of the tripping mechanism;
FIG. 4 is a schematic diagram of the output shaft of the three-position mechanism of the load switch in the closing position of the load switch;
FIG. 5 is a schematic diagram of the output shaft of the three-position mechanism of the load switch in the opening position of the load switch;
FIG. 6 is a schematic diagram of the output shaft of the three-position mechanism of the load switch in the grounding position of the load switch;
FIG. 7 is a schematic view of an upper drive cam and a lower drive cam;
FIG. 8 is a schematic view of an output cam;
FIG. 9 is a schematic view of the switching on/off indicating mechanism;
FIG. 10 is a schematic diagram of the upper crank arm, the lower crank arm and the opening and closing spring in the closing position of the load switch;
FIG. 11 is a schematic diagram of the upper crank arm, the lower crank arm and the opening and closing spring in the opening position of the load switch;
FIG. 12 is a schematic diagram of the upper crank arm, the lower crank arm and the opening and closing spring at the grounding position of the load switch;
21, an energy storage cam, 22, a lock rod, 23, a half shaft, 24, a rotating sleeve, 25, a coil spring, 26 and a positioning sleeve;
3. a load switch operating shaft 31, an upper crank arm 31A, an upper hanging pin 32, an upper driving cam 321, a first upper driving part 322, a second upper driving part 323, a third upper driving part 32A, an upper driving pin 33, an upper limit lever 4, a ground operating shaft 41, a lower crank arm 41A, a lower hanging pin 42, a lower driving cam 42A, a lower driving pin 421, a first lower driving part 422, a second lower driving part 423, a third lower driving part 43, a lower limit lever 51, an output shaft 52, an output cam 52A, an upper driving groove 52B, a lower driving groove 53, an opening and closing spring 61, a mounting plate 62, a roller 63, a button 64, an opening electromagnet 7, an opening and closing indicating mechanism 71, a first indicating shaft 72, a second indicating shaft 73, a first gear 74, a second gear 75, a third gear 76, a fourth gear, 77. an indicator panel; 81. travel switch, 82, tripping ejector rod.
Detailed Description
The invention will now be further described with reference to specific embodiments. The drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1 to 12, a three-position mechanism of a load switch with a trip release comprises a housing, wherein a load switch operating shaft 3, a grounding operating shaft 4 and an output shaft 51 are arranged on the housing; an upper crank arm 31 and a driving cam 32 are fixedly arranged on the load switch operating shaft 3 in a sleeved mode, and the load switch operating shaft 3 is suitable for reciprocating rotation at an electrified switching-on position and an electrified switching-off position; a lower crank arm 41 and a lower driving cam 42 are fixedly arranged on the grounding operation shaft 4; the grounding operation shaft 4 is suitable for reciprocating rotation at a grounding opening position and a grounding closing position; and an opening and closing spring 53 is connected between the upper crank arm 31 and the lower crank arm 41.
The opening and closing spring 53 is a commercially available product, and the structure and principle thereof are not described herein.
An output cam 52 is fixedly arranged on the output shaft 51, and the output shaft 51 rotates in a reciprocating manner at a load switch closing position, a load switch opening position and a load switch connecting position in sequence; when the load switch operating shaft 3 drives the output shaft 51 to rotate to the load switch on position through the upper crank arm 31, the upper driving cam 32 and the output cam 52, the grounding operating shaft 4 is in the grounding open position, and the load switch operating shaft 3 is in the electrifying open position.
When the load switch operating shaft 3 drives the output shaft 51 to rotate to the load switch opening position through the upper crank arm 31, the upper driving cam 32 and the output cam 52, the grounding operating shaft 4 is in the grounding opening position, and the load switch operating shaft 3 is in the power-off opening position.
When the grounding operation shaft 4 drives the output shaft 51 to rotate to the load switch grounding position through the lower crank arm 41, the lower driving cam 42 and the output cam 52; the grounding operation shaft 4 is positioned at a grounding switch-on position, and the load switch operation shaft 3 is positioned at a power-off switch-off position.
As shown in fig. 1 to 3, an energy storage device is mounted on the housing, and the energy storage device is connected with the load switch operating shaft 3, and when the load switch operating shaft 3 rotates to a power-on switching-on position, the energy storage device is driven to perform energy storage operation;
the shell is provided with an opening tripping mechanism which is suitable for carrying out locking and releasing operations on the load switch operating shaft 3 at the electrified switching position;
when the load switch operating shaft 3 at the power-on switching-on position is locked by the tripping mechanism, the tripping mechanism limits the load switch operating shaft 3 to do energy-releasing rotation to the power-off switching-off position; when the opening tripping mechanism is disconnected from the load switch operating shaft 3 of the power-on opening position, the energy storage device releases energy storage and drives the load switch operating shaft 3 to rotate to the power-off opening position.
Specifically, in the present embodiment, as shown in fig. 1 and fig. 2, the energy storage device includes a positioning sleeve 26, a coil spring 25, a rotating sleeve 24, and an energy storage cam 21; the energy storage cam 21 is fixedly connected with the load switch operating shaft 3 so as to enable the energy storage cam 21 and the load switch operating shaft 3 to synchronously rotate, and a bayonet used for being locked and disengaged with the brake separating tripping mechanism is arranged on the energy storage cam 21; the rotary sleeve 24 and the coil spring 25 are positioned in the positioning sleeve 26, and two ends of the coil spring 25 are respectively connected with the positioning sleeve 26 and the rotary sleeve 24; the rotating sleeve 24 is fixedly connected with the energy storage cam 21; the load switch operating shaft 3 drives a coil spring 25 to wind through an energy storage cam 21 and a rotary sleeve 24 so as to store energy.
Specifically, in the present embodiment, the opening tripping mechanism includes a lock rod 22 and a half shaft 23; the middle part of the lock rod 22 is elastically and rotatably connected with the shell, and a torsion spring is arranged between the lock rod 22 and the shell; one end of the lock rod 22 forms a clamping hook part which is used for being matched with the bayonet on the energy storage cam 21, and the other end of the lock rod 22 forms an abutting part; the half shaft 23 is rotationally connected with the shell, and a shedding part and a buckling part are formed at the end part of the half shaft 23; the buckling part and the releasing part are only a semicircular shaft part at the end part of the half shaft 23, the entity of the semicircular shaft at one side is the buckling part, and the gap at the other side is the releasing part.
When the abutting part of the lock rod 22 abuts against the buckling part of the half shaft 23, and the clamping hook part of the lock rod 22 hooks the bayonet of the energy storage cam 21 to buckle and lock the load switch operating shaft 3 at the power-on switching-on position; when the abutting part of the lock rod 22 rotates through the disengaging part of the half shaft 23, the lock rod 22 rotates to enable the hook part to leave the bayonet of the energy storage cam 21, and then the energy storage device is released to drive the load switch operating shaft 3 to rotate to the power-off opening position.
As shown in fig. 3, a mounting plate 61 is fixedly disposed on the half shaft 23, a pressing rod is fixedly disposed at one end of the mounting plate 61, a roller 62 is disposed on the pressing rod, a button 63 capable of elastic movement up and down is disposed on the housing, an inclined surface used for being matched with the roller 62 is formed on the button 63, and when the button 63 is pressed down, the inclined surface abuts against the roller 62 to drive the half shaft 23 to rotate. The mode of pressing down the roller 62 through the button 63 and driving the half shaft 23 to rotate is only one, and an electromagnet can be arranged on the shell, and the installation plate 61 is pushed by the extension of an iron core of the electromagnet to drive the half shaft 23 to rotate.
Meanwhile, the shell is provided with an opening electromagnet 64, and the opening electromagnet 64 is used for being in adsorption fit with the other end of the mounting plate 61 to realize electric quick opening.
Specifically, in the present embodiment, as shown in fig. 7, the upper driving cam 32 includes a first upper driving portion 321, a second upper driving portion 322, and a third upper driving portion 323, the first upper driving portion 321 is mounted with an upper driving pin 32A for cooperating with the output cam 52; an upper hanging opening and an upper hanging pin 31A are arranged on the upper crank arm 31; a lower hanging opening and a lower hanging pin 41A are arranged on the lower crank arm 41; an upper limiting rod 33 and a lower limiting rod 43 are fixedly arranged on the shell; the lower driving cam 42 comprises a first lower driving part 421, a second lower driving part 422 and a third lower driving part 423, wherein the first lower driving part 421 is provided with a lower driving pin 42A matched with the output cam 52; the output cam 52 is provided with an upper drive groove 52A for engaging with the upper drive pin 32A and a lower drive groove 52B for engaging with the lower drive pin 42A.
Specifically, in this embodiment, a speed reduction motor is provided on the housing, and the speed reduction motor is connected to the load switch operating shaft 3. The speed reduction motor drives the load switch operating shaft 3 to rotate, and the load switch operating shaft 3 drives the upper crank arm 31 to rotate. The grounding operation shaft 4 is driven by an operator to rotate through a handle.
Specifically, in this embodiment, as shown in fig. 9, the load switch three-position mechanism further includes an opening/closing indication mechanism 7, where the opening/closing indication mechanism 7 includes a first indication shaft 71, a second indication shaft 72, a first gear 73, a second gear 74, a third gear 75, a fourth gear 76, and an indication plate 77; the first indication shaft 71 and the second indication shaft 72 are connected with the housing, one end of the first indication shaft 71 is fixedly provided with an indication disc 77, the other end of the first indication shaft 71 is provided with a first gear 73, the second gear 74 and the third gear 75 are both arranged on the second indication shaft 72, the fourth gear 76 is arranged on the output shaft 51, the second gear 74 is meshed with the first gear 73, and the third gear 75 is meshed with the fourth gear 76.
The output shaft 51 rotates among the on-off position of the load switch, the off-off position of the load switch and the on-off position of the load switch, and the output shaft 51 finally drives the indicating disc 77 to rotate through the on-off indicating mechanism 7, so that three stations are displayed through the indicating disc 77.
Specifically, in this embodiment, as shown in fig. 4, a tripping ejector rod 82 and a travel switch 81 which can slide up and down are arranged on the housing, after the load switch fuse is fused, the tripping ejector rod 82 moves up, the upper end of the tripping ejector rod 82 is connected with a baffle to shield the load switch operating shaft 3, so as to prevent the handle from being inserted to perform a closing operation, and meanwhile, the lower end of the tripping ejector rod 82 presses the travel switch, so that the travel switch 81 is changed from a normally open state to a normally closed state.
When the load switch three-station mechanism works, the load switch three-station mechanism respectively reciprocates between three stations; namely a load switch closing position, a load switch opening position and a load switch connecting position;
firstly, the method comprises the following steps: the method for controlling the three-position mechanism of the load switch to the switching-on position of the load switch comprises the following steps:
the load switch operating shaft 3 needs to be rotated to an electrified switching-on position, and the grounding operating shaft 4 needs to be rotated to a grounding switching-off position;
the three-position mechanism of the load switch is shown in figure 4;
the structures of an upper crank arm 31, a lower crank arm 41 and a switching-on/off spring 53 in the load switch three-position mechanism are shown in FIG. 10;
specifically, a process of rotating the load switch operating shaft 3 to the power-on switching-on position is described: the upper crank arm 31 is forced to rotate (driven by a speed reduction motor), the upper crank arm 31 abuts against the second upper driving part 322 of the upper driving cam 32 through the upper hanging pin 31A to drive the upper driving cam 32 to rotate, the upper driving cam 32 moves in the upper driving groove 52A through the upper driving pin 32A to drive the output cam 52 to rotate, after the upper driving cam 32 rotates until the third upper driving part 323 abuts against the upper limiting rod 33, the upper crank arm 31 and the upper driving cam 32 stop rotating, and at the moment, the output cam 52 drives the output shaft 51 to rotate to a load switch closing position.
In the process that the load switch operating shaft 3 rotates to the power-on switching-on position, the energy storage cam 21 is driven to rotate, the energy storage cam 21 drives the coil spring 25 to wind energy storage, and after the load switch operating shaft 3 is powered on and switched on in place, the clamping hook part of the lock rod 22 is clamped into the bayonet of the energy storage cam 21, namely as shown in fig. 1; at this time, the lock lever 22 is restricted from turning by the engagement portion of the half shaft 23 abutting the engagement portion of the lock lever 22, and if there is no half shaft 23 engagement portion restricting turning of the lock lever 22, the return turning capability of the coil spring 25 is sufficient to turn the load switch operating shaft 3.
Additionally, the load switch operating shaft 3 is rotated to the grounding brake-off position: rotating the grounding operation shaft 4 to the grounding brake-off position: the lower crank arm 41 is forced to rotate, the lower crank arm 41 abuts against the second lower driving part 422 of the lower driving cam 42 through the lower hanging pin 41A to drive the lower driving cam 42 to rotate, and after the lower driving cam 42 rotates until the third lower driving part 423 abuts against the lower limiting rod 43, the lower crank arm 41 and the lower driving cam 42 stop rotating.
II, secondly: the method for switching the load switch three-station mechanism to the load switch opening position is as follows;
the grounding operation shaft 4 is kept at a grounding brake-off position; the load switch operating shaft 3 is rotated to the power-off opening position.
The three-position mechanism of the load switch is shown in figure 5;
the structures of the upper crank arm 31, the lower crank arm 41 and the switching-on/off spring 53 in the load switch three-position mechanism are shown in FIG. 11;
the load switch three-station mechanism has the advantages that rapid brake opening and tripping can be carried out; as shown in fig. 2, the specific process: the button 63 is pressed down, the roller 62 is squeezed, the roller 62 drives the half shaft 23 to rotate, in the process of rotating the half shaft 23, the buckling part of the half shaft 23 is separated from the abutting part of the lock rod 22, the shedding part of the half shaft 23 faces the abutting part of the lock rod 22, at the moment, because the lock rod 22 is lack of limitation, the torsion spring of the lock rod 22 drives the lock rod 22 to rotate, the clamping part of the lock rod 22 is disengaged from the clamping opening of the energy storage cam 21, then the energy storage cam 21 drives the introduction load switch operating shaft 3 to rotate under the action of the reset revolving force of the coil spring 25, further drives the upper crank arm 31 to rotate, the upper crank arm 31 is forced to rotate, the third upper driving part 323 of the upper driving cam 32 is abutted to the upper hanging pin 31A of the upper crank arm 31 to rotate, the upper driving cam 32 moves in the upper driving crank groove 52A through the upper driving pin 32A, so as to drive the output cam 52 to rotate, the upper crank arm 31 and the upper drive cam 32 stop rotating; at this time, the output cam 52 drives the output shaft 51 to rotate to the opening position of the load switch;
thirdly, the method comprises the following steps: the method for switching the load switch three-station mechanism to the load switch grounding position is as follows;
the load switch operating shaft 3 is kept at a power-off opening position, and the grounding operating shaft 4 needs to be rotated to a grounding opening position;
the three-position mechanism of the load switch is shown in figure 6;
the structures of an upper crank arm 31, a lower crank arm 41 and a switching-on/off spring 53 in the load switch three-position mechanism are shown in fig. 12;
the process that the grounding operation shaft 4 rotates to the grounding brake-separating position: the lower crank arm 41 is stressed to rotate (an operator drives the grounding operation shaft 4 to rotate through a handle), the third lower driving part 423 of the lower driving cam 42 is abutted to rotate through a lower hanging pin 41A of the lower crank arm 41, the lower driving cam 42 drives the output cam 52 to rotate through a lower driving groove 52B through a lower driving pin 42A, and the lower crank arm 41 and the lower driving cam 42 stop rotating until a lower hanging opening of the lower crank arm 41 is abutted to the lower limiting rod 43; at this time, the output cam 52 drives the output shaft 51 to rotate to the load switch grounded position.
The utility model provides a take three station mechanisms of load switch of separating brake dropout can control load switch operating axis 3 at the state of circular telegram on-off position through energy memory and separating brake tripping device, can realize switching off the quick separating brake of load switch operating axis 3, switches load switch operating axis 3 to the outage separating brake position from the circular telegram on-off position, then controls load switch's output and is switched to load switch off-off position by load switch on-off position.
The load switch three-station mechanism is simple in structure and stable and reliable in operation, the crank arms drive the output cam 52 to rotate through the driving cams respectively, and then the output cam 52 drives the output shaft 51 to reciprocate among the three stations, so that the whole load switch is higher in transmission stability, longer in mechanical life and capable of accumulating more than ten thousand times.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. A load switch three-station mechanism with a brake separating and tripping function is characterized by comprising a shell, wherein a load switch operating shaft is arranged on the shell and is suitable for reciprocating rotation at a power-on brake closing position and a power-off brake separating position;
the energy storage device is connected with the load switch operating shaft, and when the load switch operating shaft rotates to the power-on switching-on position, the energy storage device is driven to perform energy storage operation;
the brake separating and tripping mechanism is suitable for carrying out locking and releasing operations on the load switch operating shaft at the electrified brake closing position;
when the load switch operating shaft of the power-on switching-on position is locked by the tripping mechanism, the tripping mechanism limits the load switch operating shaft to rotate in a releasing manner towards the power-off switching-on position;
when the opening tripping mechanism is disconnected with the load switch operating shaft of the power-on opening position, the energy storage device releases energy storage and drives the load switch operating shaft to rotate to the power-off opening position.
2. The three-position mechanism of the load switch with the opening trip according to claim 1,
the energy storage device comprises a positioning sleeve, a coil spring, a rotating sleeve and an energy storage cam;
the energy storage cam is fixedly connected with the load switch operating shaft, and a bayonet used for being locked and disengaged with the brake separating tripping mechanism is arranged on the energy storage cam;
the rotary sleeve and the coil spring are positioned in the positioning sleeve, and two ends of the coil spring are respectively connected with the positioning sleeve and the rotary sleeve; the rotating sleeve is fixedly connected with the energy storage cam;
the load switch operating shaft drives a coil spring to store energy through an energy storage cam and a rotating sleeve.
3. The three-position mechanism of the load switch with the opening trip according to claim 2,
the brake separating and tripping mechanism comprises a lock rod and a half shaft;
the middle part of the lock rod is rotationally connected with the shell, one end of the lock rod is provided with a clamping hook part which is matched with the upper bayonet of the energy storage cam, and the other end of the lock rod is provided with a butting part;
the half shaft is rotationally connected with the shell, and a shedding part and a buckling part are formed at the end part of the half shaft;
when the abutting part of the lock rod abuts against the buckling part of the half shaft, the clamping hook part of the lock rod hooks the bayonet of the energy storage cam so as to buckle and lock the load switch operating shaft at the power-on switching-on position;
when the lock rod abutting part rotates through the half shaft disengaging part, the lock rod rotates to enable the clamping hook part to depart from the energy storage cam bayonet, and then the energy storage device releases and drives the load switch operating shaft to turn to the power-off brake-separating position.
4. The three-position mechanism of the load switch with the brake separating and releasing function as claimed in claim 3,
the fixed mounting panel that sets up on the semi-axis, the fixed depression bar that sets up of mounting panel one end, set up the gyro wheel on the depression bar, set up the button that can be elastic motion from top to bottom on the casing, form on the button be used for with gyro wheel complex inclined plane, the button is rotated in order to drive the semi-axis through inclined plane butt gyro wheel when pushing down.
5. The three-position mechanism of the load switch with the opening trip according to claim 1,
the device also comprises a grounding operation shaft and an output shaft;
an upper crank arm and an upper driving cam are fixedly arranged on the load switch operating shaft in a sleeved mode;
a lower crank arm and a lower driving cam are fixedly arranged on the grounding operation shaft in a sleeved mode; the grounding operation shaft is suitable for reciprocating rotation at a grounding opening position and a grounding closing position;
the upper crank arm and the lower crank arm are connected with a switching-on/off spring;
an output cam is fixedly arranged on the output shaft, and the output shaft rotates in a reciprocating manner at a load switch closing position, a load switch opening position and a load switch connection position in sequence;
when the load switch operating shaft drives the output shaft to rotate to a load switch on position through the upper crank arm, the upper driving cam and the output cam, the grounding operating shaft is in a grounding brake-separating position, and the load switch operating shaft is in a power-on brake-closing position;
when the load switch operating shaft drives the output shaft to rotate to the load switch opening position through the upper crank arm, the upper driving cam and the output cam, the grounding operating shaft is positioned at the grounding opening position, and the load switch operating shaft is positioned at the power-off opening position;
when the grounding operation shaft drives the output shaft to rotate to the connection position of the load switch through the lower crank arm, the lower driving cam and the output cam; the grounding operation shaft is positioned at a grounding switch-on position, and the load switch operation shaft is positioned at a power-off switch-off position.
6. The three-position mechanism of the load switch with the brake separating and releasing function as claimed in claim 5,
the upper driving cam comprises a first upper driving part, a second upper driving part and a third upper driving part, and an upper driving pin matched with the output cam is installed on the first upper driving part;
the upper crank arm is provided with an upper hanging opening and an upper hanging pin; a lower hanging opening and a lower hanging pin are arranged on the lower crank arm;
an upper limiting rod and a lower limiting rod are fixedly arranged on the shell;
the lower driving cam comprises a first lower driving part, a second lower driving part and a third lower driving part, and the first lower driving part is provided with a lower driving pin matched with the output cam;
the output cam is provided with an upper driving groove matched with the upper driving pin and a lower driving groove matched with the lower driving pin.
7. The three-position mechanism of the load switch with the brake separating and releasing function as claimed in claim 5,
when the load switch operating shaft is in a power-on switching-on position, the upper crank arm is stressed to rotate, the upper crank arm is abutted to the second upper driving part of the upper driving cam through the upper hanging pin so as to drive the upper driving cam to rotate, the upper driving cam drives the output cam to rotate through the upper driving pin, and the upper crank arm and the upper driving cam stop rotating after the upper driving cam rotates to the position where the third upper driving part is abutted to the upper limiting rod;
when the load switch operating shaft is in a power-off opening position, the upper crank arm is stressed to rotate, the third upper driving part of the upper driving cam is abutted and rotated by the upper hanging pin of the upper crank arm, the upper driving cam drives the output cam to rotate by the upper driving pin, and the upper crank arm and the upper driving cam stop rotating until the upper hanging opening of the upper crank arm is abutted and rotated by the upper limiting rod;
when the grounding operation shaft is used for grounding brake opening, the lower crank arm is stressed to rotate, the lower crank arm is abutted to the second lower driving part of the lower driving cam through the lower hanging pin so as to drive the lower driving cam to rotate, and the lower driving cam stop rotating after the lower driving cam rotates until the third lower driving part is abutted to the lower limiting rod;
when the grounding operation shaft is used for grounding and closing, the lower crank arm is stressed to rotate, the third lower driving part of the lower driving cam is abutted and rotated by the lower hanging pin of the lower crank arm, the lower driving cam drives the output cam to rotate by the lower driving pin, and the lower crank arm and the lower driving cam stop rotating until the lower hanging opening of the lower crank arm is abutted and rotated by the lower limiting rod.
8. The three-position mechanism of the load switch with the brake separating and releasing function as claimed in claim 5,
the load switch three-station mechanism further comprises an on-off brake indicating mechanism, and the on-off brake indicating mechanism comprises a first indicating shaft, a second indicating shaft, a first gear, a second gear, a third gear, a fourth gear and an indicating disc;
the first indicating shaft and the second indicating shaft are connected with the shell, an indicating disc is fixedly arranged at one end of the first indicating shaft, a first gear is arranged at the other end of the first indicating shaft, the second gear and the third gear are both arranged on the second indicating shaft, the fourth gear is arranged on the output shaft, the second gear is meshed with the first gear, and the third gear is meshed with the fourth gear.
9. The three-position mechanism of the load switch with the brake separating and releasing function as claimed in claim 5,
the shell is provided with a speed reducing motor, and the speed reducing motor is connected with a load switch operating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020831271.2U CN211788780U (en) | 2020-05-18 | 2020-05-18 | Load switch three-station mechanism with brake separating tripping function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020831271.2U CN211788780U (en) | 2020-05-18 | 2020-05-18 | Load switch three-station mechanism with brake separating tripping function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211788780U true CN211788780U (en) | 2020-10-27 |
Family
ID=72955110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020831271.2U Active CN211788780U (en) | 2020-05-18 | 2020-05-18 | Load switch three-station mechanism with brake separating tripping function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211788780U (en) |
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2020
- 2020-05-18 CN CN202020831271.2U patent/CN211788780U/en active Active
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