CN102904166A - Spring operating mechanism for switch cabinet - Google Patents

Abstract

The invention relates to a spring operating mechanism for a switch cabinet, which comprises a shell, an energy storage part, an input cam, an output cam, an energy storage transmission mechanism and an opening/closing transmission mechanism, wherein the energy storage part comprises opening and closing springs, a spring stretching seat, a driving disk device and a spacing disk; the spring stretching seat is flexibly assembled on the shell in the front-back direction of the shell; the driving disk device is rotatablely assembled in the shell; the spacing tray is used for connecting with an operating shaft of a corresponding switch in a transmission mode; the driving disk device and the spring stretching seat are connected through a link assembly and form a crank-slider mechanism; the back ends of the opening and closing springs are respectively suspended on the spring stretching seat; the front end of the opening spring is suspended on the front end of the shell; and the front end of the closing spring is suspended on the spacing disk. The opening and closing springs store energy simultaneously, thereby eliminating the hidden danger of incapability of opening in the opening spring of the existing spring operating mechanism since the energy needs to be supplied by the closing spring.

Description

A spring operating mechanism for a switch cabinet

technical field

The invention relates to an accessory for a switch cabinet, in particular to a spring operating mechanism for a switch cabinet.

Background technique

At present, in the field of medium voltage switches, the spring operating mechanism is the most widely used mechanism, which mainly has the following two shortcomings: (1) The closing spring and the opening spring are independent of each other, and the energy storage mechanism only stores energy for the closing spring , when the switch is closed, the closing spring releases energy, and at the same time it stores energy for the opening spring to ensure that the switch can trip and open when it is closed. This kind of structural design needs to store energy for the opening spring when the closing spring releases energy at the same time, the structure is complex, the hidden danger of unsuccessful closing is great, and the reliability is low. If the energy storage of the opening spring fails, there will be a serious problem that the switch cannot be opened; (2) After the energy storage of the opening (closing) spring, the hold is buckled on the tripping half shaft through the crank arm, and the tripping half shaft is directly Withstand a pressure of about 2000N, the tripping force when tripping the opening (closing) switch is too large, and the failure rate of tripping the opening (closing) switch through the tripping coil is relatively high.

Contents of the invention

The object of the present invention is to provide a spring operating mechanism for switchgear to eliminate the hidden danger that the opening spring of the existing spring operating mechanism cannot be opened due to the energy provided by the closing spring.

In order to solve the above problems, the spring operating mechanism for switch cabinets of the present invention adopts the following technical solutions: a spring operating mechanism for switch cabinets, including a housing, and the housing includes cover plates arranged in parallel and spaced up and down and fixed to each other and the bottom plate; an energy storage mechanism is provided between the cover plate and the bottom plate, and the energy storage mechanism includes opening and closing springs, which are guided and movably assembled on the casing along the front and rear directions of the casing to move the pair The opening and closing springs stretch and store spring energy, the drive plate device rotatably assembled in the housing, and the limit plate for transmission connection with the corresponding switch shaft, the drive plate device and the spring tension seat The crank slider mechanism is connected by the connecting rod assembly, the rear ends of the opening and closing springs are hooked on the spring tension seat, and the front ends of the opening and closing springs are correspondingly hooked to the housing, the limit on the disk; the cover plate of the housing is rotatably equipped with an input cam that is non-rotatingly matched with the drive disk device to drive the spring tension seat backward, and an input cam is provided between the connecting rod assembly and the input cam. When the cam drives the spring tension seat to move backward, it is triggered by the input cam to prevent the spring tension seat from returning forward when the opening and closing spring energy storage is over, and to release the stored energy of the spring tension seat when the input cam drives the switch to open. Transmission mechanism; the bottom plate is rotatably equipped with an output cam for anti-rotation cooperation with the switch shaft, and the output cam is rotatably matched with the drive disc device, and an opening position for locking the switch is provided between the output cam and the input cam. The opening and closing springs are triggered by the input cam to unlock the opening and closing transmission mechanism of the output cam after the energy storage of the opening and closing springs is completed.

The energy storage transmission mechanism includes a lock plate that is movable and guided along the front and rear directions and is arranged on the outside of the cover plate and is synchronously connected with the spring tension seat. When the energy storage of the opening and closing springs is completed, the closing limit cam that is inserted into the gap of the lock plate by rotation and is used to lock the closing limit after the closing limit cam snaps into the gap of the lock plate. For the closing locking cam of the cam, there are two limit posts on the cover plate for limiting the rotation angle of the closing limit cam, and one of the limit posts is set with a cover for driving the closing limit cam to move closer to the lock plate The first torsion spring, the first spring for driving the closing locking cam to rotate to push the closing limit cam between the closing locking cam and the housing, the closing locking cam transmission connection is used to drive the input cam The rotation during the opening operation of the corresponding switch is transmitted to the closing locking cam to release the trip actuator arm of the closing limit cam.

The opening and closing transmission mechanism includes an opening limit cam for snapping into a gap provided on the output cam and cooperating with the output cam when the corresponding switch is opened, and an opening limit cam for opening the corresponding switch. After being snapped into the gap on the output cam, the opening locking cam of the opening limit cam is locked by rotating it. The opening limit cam and the opening locking cam are both rotated and assembled on the outside of the bottom plate. There are two A limit post for limiting the rotation angle of the opening limit cam, one of the two limit posts is provided with a second torsion spring for driving the opening limit cam to move closer to the output cam, and the cover plate There is a swing arm used to transmit the rotation of the input cam driving the corresponding switch to the opening lock cam to lock the opening limit cam. One end of the swing arm is lapped on the input cam, and the other end is connected to the opening lock cam. The brake locking cam is connected in transmission, and a swing arm return spring for driving one end lapped on the input cam to move closer to the input cam is provided between the swing arm and the housing.

The connecting rod assembly includes a triangular push plate with a small front and a large rear arranged in parallel with the cover plate. The rear ends of the two push plates are fixedly connected by two spring hanging shafts, and the spring tension seat is formed by the Two spring hanging shafts are formed, and the spring tension seat is guided and matched with the housing through one of the two hanging shafts.

The drive disk device includes two turntables arranged in parallel and spaced up and down and fixed to each other. The limiting disk is coaxially arranged between the two turntables and is fixedly matched with the output cam by bolts. Among the two turntables, The one on the lower side is provided with a relief hole for letting go of the two bolts when the output cam rotates.

A trip driving arm for prying the trip driving arm is arranged on the cover plate.

A first driving arm cantilever radially outward from the closing locking cam, and the first spring is arranged between the first driving arm and the casing.

The input cam is provided with a first claw used to toggle the tripping transmission arm, and the first claw is arranged on the circumferential outer wall surface of the input cam and cantilever outward in the radial direction.

The swing arm is connected to the opening locking cam through a camshaft with a crank arm that rotates with the cover plate and the bottom plate, and the swing arm is in rotation-proof cooperation with the crank arm of the camshaft.

The input cam is provided with a second finger for moving the swing arm, and the second finger is arranged on the circumferential outer wall surface of the input cam and cantilever outward in the radial direction.

Since the spring operating mechanism for the switch cabinet has the housing, the energy storage part, the input cam, and the output cam, the rear ends of the opening and closing springs of the energy storage part are all hooked to the spring puller. On the extension seat, the front end of the opening spring is hooked to the front end of the housing, and the front end of the closing spring is hooked to the limit plate. When the spring tension seat moves backward, it is triggered by the input cam to prevent the spring tension seat from returning forward at the end of the opening and closing spring energy storage and to release the energy storage transmission mechanism of the spring tension seat when the input cam drives the switch to open. ; The bottom plate is rotatably equipped with an output cam for anti-rotation cooperation with the switch shaft, and the output cam is rotatably matched with the drive disk device. There is an opening position for locking the switch between the output cam and the input cam, and the opening and closing After the energy storage of the closing spring is completed, it is triggered by the input cam to unlock the opening and closing transmission mechanism of the output cam; it can be seen that the opening and closing springs store energy at the same time when they are working, and then pass through the stored energy. The energy transmission mechanism cooperates with the opening and closing transmission mechanism to complete the gradual release, thereby completing the opening and closing operations of the switch. Since the opening and closing springs store energy at the same time, the opening and closing of the existing spring operating mechanism is eliminated. The hidden danger that the spring cannot be opened due to the energy provided by the closing spring.

Description of drawings

Fig. 1 is a schematic structural view of Embodiment 1 of a spring operating mechanism for a switch cabinet in an energy storage state;

Fig. 2 is a schematic structural view of the embodiment 1 of the spring operating mechanism for the switchgear after the cover plate is removed in the closed state;

Fig. 3 is a schematic diagram of the structure of Fig. 1 after removing the cover plate and the locking plate;

Fig. 4 is a perspective view of Embodiment 1 of a spring operating mechanism for a switch cabinet in an opening state;

Fig. 5 is a schematic diagram of the structure after removing the cover plate in Fig. 4;

Fig. 6 is a structural schematic diagram of Embodiment 1 of the spring operating mechanism for the switch cabinet in the opening state;

Fig. 7 is a schematic diagram of the back structure of Embodiment 1 of the spring operating mechanism for the switch cabinet in the closing state;

Fig. 8 is a schematic diagram of the back structure of Embodiment 1 of the spring operating mechanism for the switch cabinet in the opening state;

Fig. 9 is an exploded schematic diagram of the input cam, the double turntable device, the double push plate device and the output cam in the embodiment 1 of the spring operating mechanism for the switch cabinet;

Fig. 10 is a schematic structural view of a double turntable device in Embodiment 1 of a spring operating mechanism for a switch cabinet;

Fig. 11 is a schematic diagram of cooperation between the limit plate and the output cam in Embodiment 1 of the spring operating mechanism for the switch cabinet. the

Detailed ways

Embodiment 1 of a spring operating mechanism for a switchgear, as shown in Figure 1-11, includes a housing, an energy storage part, an input cam 1, an output cam 2, an energy storage transmission mechanism, and an opening and closing transmission mechanism.

The housing includes a bottom plate 3 and a cover plate 4 . The bottom plate 3 is in the shape of a knife handle with a bent portion at the front end and a shank at the rear end and is provided with a guide hole extending along the front and rear directions thereof. The cover plate 4 has the same shape as the bottom plate 3 and passes above the upper surface of the bottom plate 3. The side plates standing on the left and right sides of the base plate 3 are fixed on the base plate 3, so that the base plate 3 and the cover plate 4 form a box body; the cover plate 4 is provided with a guide hole 4-1 corresponding to the guide hole on the base plate 3 .

The energy storage part includes a closing spring 5, an opening spring 6, a drive plate device, a connecting rod assembly, a spring tension seat and a limit plate 7 for anti-rotation cooperation with the corresponding switch shaft. The drive disk device adopts a double turntable device 8 composed of two layers of turntables arranged in parallel and fixedly connected one above the other, and the connecting rod assembly adopts a double push plate device composed of two push plates arranged in parallel and spaced apart and fixedly connected to each other. 9. The limit plate 7 and the double turntable device 8 are arranged in parallel between the two turntables of the double turntable device 8. The two push plates of the double push plate device 9 are all in the shape of a triangle with a narrow front and a wide rear. The rear ends of the two pass through a left Two spring hanging shafts 10 arranged on the right are connected, and the spring stretching seat is composed of the two spring hanging shafts 10, wherein the spring hanging shaft on the right side is simultaneously installed in the guide holes on the bottom plate 3 and the cover plate 4 Inside and form a guide positioning shaft, the guide positioning shaft and the base plate 3 and cover plate 4 guide and move in the front and rear directions, and the two turntables of the double turntable device 8 are provided with corresponding turntable drive arms 8-1, and the two turntable drive arms 8 -1 are all cantilevered outward along the radial direction of the double turntable device 8 and are correspondingly hinged with the front ends of the two push plates of the double push plate device 9, so that the drive disc device, the connecting rod assembly and the spring tension seat jointly form a crank slider block mechanism, wherein the drive plate device corresponds to the crank portion of the crank-slider mechanism, the connecting rod assembly corresponds to the connecting rod portion of the crank-slider mechanism, the spring tension seat corresponds to the slider portion of the crank-link mechanism, and the limit plate 7 is provided with The limit disc drive arm 7-1 cantilevered radially outwards, the front end of the closing spring 5 is hooked on the box body formed by the base plate 3 and the cover plate 4, and the rear end is located on the left side of the rear end of the double push plate device. The spring hanging shaft is articulated, and the front end of the opening spring 6 is articulated on the limit plate drive arm 7-1, and the rear end is articulated on the spring hanging shaft at the rear end right side of the double push plate device.

The input cam 1 is fixedly assembled on the upper turntable of the double turntable device 8, and the output cam 2 is rotatably matched with the lower turntable of the double turntable device 8 and is fixedly connected with the limit plate 7 through two connecting bolts, wherein the input and output cams are both located on the bottom plate 3 and the box body surrounded by the cover plate 4, the input cam 1 has a first finger 1-1 and a second finger 1-2 that cantilever along its radial direction, the lower turntable and the bottom plate of the double turntable device 8 3 are provided with the two connecting bolts corresponding to when the output cam 2 rotates relative to the double turntable device 8 to avoid the connecting bolts 8-2, the side of the input cam 1 facing the cover plate 4 is provided with a rotating shaft , The output cam 2 is provided with a shaft sleeve that rotates with the rotating shaft, and the shaft and the shaft sleeve are used to ensure the coaxiality between the input and output cams.

The energy storage transmission mechanism includes an L-shaped locking plate 11 with a bent portion at the rear end, a closing limit cam 12 and a closing locking cam 13 arranged on the cover plate 4, and the bent portion at the rear end of the locking plate 11 is bent to the right. folded and provided with a through hole, the lock plate 11 is sleeved on the part of the guide positioning shaft protruding from the cover plate 4 through the through hole and connected with the guide positioning shaft, the cover plate 4 is on the left side of the lock plate 11 The front and rear are provided with a guide positioning wheel 14 that guides and cooperates with the lock plate 11 in the front and rear direction. The guide positioning wheel 14 is used to prevent the lock plate 11 from moving in the up and down direction simultaneously. The rear end of the lock plate 11 is at the right side. There is a gap 11-1. The closing limit cam 12 is triangular in shape, and has a closing swing arm mounted on the cover through the rotation of a vertical shaft arranged on the cover, a closing bolt overhanging to the left side of the cover and used for locking with the closing. The top pressure part of the cam top pressure fit, the front and rear sides of the closing limit cam 12 on the cover plate 4 are correspondingly provided with a front closing limit post and a rear closing limit post, and the front and rear closing limit posts It is used to limit the rotation range of the closing limit cam 12, wherein the first torsion spring 15 is sleeved on the rear closing limit post, and the first torsion spring 15 is used to move backward on the lock plate 11 and complete the splitting and closing After the stretching energy storage of the brake spring, the closing limit cam 12 is driven closer to the lock plate 11 so that the dead bolt of the close limit cam 12 snaps into the opening at the rear end of the lock plate 11, and the closing lock cam 13 is used for closing After the lock tongue snaps into the notch on the lock plate 11, it presses against the pressing part of the closing limit cam 12 to lock the lock plate. There is a first spring 16 between the front side of 13-1 and the cover plate 4. The first spring 16 is used to drive the closing lock cam 13 to rotate to lock the closing limit cam 12. The cover plate 4 is movable and guided along the front and rear directions. Equipped with a tripping transmission arm 17 for pushing the closing locking cam 13 to release the closing limit cam 12, the end of the tripping transmission arm 17 away from the closing limit cam 12 is input into the first dial of the cam 1 during operation The claw 1-1 is driven, and at the same time, the end of the trip driving arm 17 away from the closing locking cam 13 is provided with a trip driving arm 18. Transmission arm 17.

The opening and closing transmission mechanism includes an opening limit cam 19 rotatably mounted on the bottom of the base plate and an opening locking cam 20 for locking the opening limit cam 19 when the mechanism is opened. The opening limit cam 19 is triangular in shape, and has an opening swing arm mounted on the base plate 3 through the rotation of a vertical shaft arranged on the base plate 3, an opening lock tongue extending to the right side of the base plate, and a locking cam for locking with the opening. The top pressure part of the top pressure fit, the front and rear sides of the opening limit cam on the bottom plate are correspondingly provided with a front opening limit post and a rear opening limit post, and the front and rear opening limit posts are used to limit the opening limit. The swing range of the gate limit cam, wherein the second torsion spring 21 is set on the rear opening limit post, and the second torsion spring 21 is used to drive the opening limit cam 19 to swing to the right (that is, to move closer to the output cam), When the output cam 2 turns to the opening position, the opening lock tongue is driven to snap into the gap provided on the output cam 2 to lock the opening position of the output cam 2; the opening locking cam 20 is used for opening limit The lock bolt of the cam 19 is snapped into the output cam and then tightens the opening limit cam 19, thereby locking the opening limit cam 19; the bottom plate 3 and the cover plate 4 are rotated with a camshaft 22, and the camshaft 22 is used to pass through it. Turn and drive (pry) the opening locking cam 20 to rotate, thereby locking or releasing the opening limit cam 19; the upper end of the camshaft 22 passes through the top of the cover plate 4 and is equipped with a crank arm 23 for anti-rotation, and the crank arm 23 adopts One side plate, anti-rotation on the crank arm 23 is equipped with a transmission arm 24, the axis of the transmission arm 24 and the axis of the crank arm 23 intersect each other, the transmission arm 24 is used to rotate clockwise to the opening and closing spring storage of the input cam 1 In the process of continuing to rotate after the end, it is moved by the second finger 1-2 on the input cam, thereby driving the opening locking cam through the camshaft 22 and finally releasing the locking of the opening limit cam and the output cam; the transmission arm A transmission arm return spring 25 is provided between the front side of 24 and the cover plate 4 .

The working mode of the switchgear spring operating mechanism can be described through three working processes:

Energy storage and closing process: the input cam is driven to rotate clockwise by manpower or the motor through the transmission device, the input cam drives the double turntable device to rotate clockwise, the double turntable device pushes the double push plate device to move forward, at the same time, the closing spring , The opening spring is stretched forward to store energy at the same time, and the lock plate also moves upward at the same time. When the energy storage is over, the closing limit cam moves closer to the lock plate under the action of the button spring and cooperates with the notch on the lock plate. The lock plate, the closing lock cam rotates clockwise under the action of the first spring, presses against the closing limit cam and locks the closing limit cam, the lock plate cannot move forward, so that the closing spring, branch The brake spring remains at the energy storage position; at this time, the input cam continues to rotate clockwise, and the transmission arm is moved obliquely backward through its first finger, driving the crank arm to move counterclockwise, and the crank arm drives the camshaft to rotate counterclockwise and The opening locking cam is driven to rotate through the camshaft, so that the opening locking cam releases the limit state of the opening limit cam, and then releases the limit of the output cam. Since the output cam and the limit cam plate are fixed together, the closing The spring releases energy, thereby driving the limit plate and the output cam to rotate clockwise quickly, and finally realizing the quick closing of the switch.

Opening process: the input cam is driven to rotate counterclockwise by manpower or a motor through the transmission device, and the input cam moves the tripping transmission arm backward through its second claw, thereby driving the closing locking cam to rotate counterclockwise to realize closing. The locking state of the brake limit cam is unlocked, and the limit of the lock plate is released. Since the opening spring is still in the state of energy storage, the opening spring releases energy, driving the double push plate device to move forward, and at the same time, the double turntable device rotates counterclockwise and Drive the output cam to rotate counterclockwise quickly, so as to realize the quick opening of the switch. During the counterclockwise opening process of the input cam, since the limit to the transmission arm is released, the transmission arm drives the crank arm to move clockwise under the action of the transmission arm return spring, thereby driving the camshaft to rotate clockwise, and then releases the limit to the transmission arm. The limit of the opening locking cam. At this time, if the output cam has entered the opening state, the locking tongue of the opening limit protrusion will stretch out and enter the gap of the output cam. At the same time, the opening locking cam will reset and the opening limit cam will Lock to realize the limit of the opening state of the mechanism.

Tripping and opening working process: the tripping drive arm is triggered by the release or other parts or directly triggers the tripping drive arm, and the tripping drive arm pushes the tripping drive arm to move backward, thereby driving the closing locking cam to rotate counterclockwise. Realize the unlocking of the locking state of the closing limit cam, and the limit of the lock plate is released. Since the opening spring is still in the state of energy storage, the opening spring releases energy, driving the double push plate device to move downward, and at the same time, the double turntable device counterclockwise Rotate, the double turntable device drives the output cam to rotate counterclockwise quickly, so as to realize the quick opening of the switch. During the counterclockwise opening process of the input cam, since the limit to the transmission arm is released, the transmission arm drives the crank arm to move clockwise under the action of the return spring of the transmission arm, thereby driving the camshaft to rotate clockwise, thereby releasing the For the limit of the opening locking cam, if the output cam has entered the opening state at this time, the lock tongue of the opening limit cam will stretch out and enter the gap of the output cam, and at the same time the opening locking cam will reset to the opening limit cam. Lock to realize the limit of the opening state of the mechanism; this operation process can be operated under the failure of the input cam to toggle the tripping transmission arm or the emergency state, so as to ensure the opening of the mechanism at any time and avoid the failure caused by the failure of the mechanism to open. unnecessary loss.

Claims (10)

1. A spring operating mechanism for a switchgear, characterized in that it comprises a housing, and the housing includes a cover plate and a base plate that are arranged in parallel and spaced up and down and are fixed to each other; between the cover plate and the base plate Energy storage mechanism, the energy storage mechanism includes opening and closing springs, springs that are movably assembled on the housing along the front and rear directions of the housing so as to stretch and store energy by moving the opening and closing springs backwards. The extension seat, the drive disc device rotatably assembled in the housing and the limit disc for transmission connection with the corresponding switch shaft, the drive disc device and the spring extension seat are connected to form a crank slider mechanism through a connecting rod assembly. The rear ends of the opening and closing springs are all hooked on the spring stretching seat, and the front ends of the opening and closing springs are correspondingly hooked on the housing and the limit plate; The drive disc device is anti-rotatingly fitted to drive the input cam of the spring tension seat backward, and a cam is provided between the connecting rod assembly and the input cam for being driven by the input cam when the spring tension seat moves backward. Trigger to prevent the spring stretching seat from returning forward when the opening and closing spring energy storage ends, and release the energy storage transmission mechanism of the spring stretching seat when the input cam drives the switch to open; The output cam is screw-fitted, the output cam is rotatably matched with the drive plate device, and the opening position for locking the switch shaft is set between the output cam and the input cam, and is input into the cam after the energy storage of the opening and closing springs is completed. Trigger to unlock the opening and closing transmission of the output cam. 2. The spring operating mechanism for switchgear according to claim 1, characterized in that, the energy storage transmission mechanism includes a lock that is movable and guided along the front and rear directions and is arranged on the outside of the cover plate and is synchronously connected with the spring tension seat. There is a notch on the lock plate, and the cover plate is rotatably equipped with a closing limit cam which is used to snap into the notch of the lock plate by rotation when the energy storage of the opening and closing springs ends After the closing limit cam snaps into the gap of the lock plate, the closing locking cam that locks the closing limit cam is tightened, and the cover plate is provided with two limit posts for limiting the rotation angle of the closing limit cam. One of the limit posts is sleeved with a first torsion spring for driving the closing limit cam to move closer to the lock plate, and there is a set between the closing locking cam and the housing for driving the closing locking cam to rotate for tight closing. The first spring of the brake limit cam, the closing lock cam transmission connection is used to transmit the rotation of the input cam to the close lock cam to release the tripping transmission arm of the close limit cam when the corresponding switch is opened. 3. The spring operating mechanism for switchgear according to claim 1, characterized in that, the opening and closing transmission mechanism includes a mechanism for snapping into a notch provided on the output cam when the corresponding switch is opened and connected to the output cam. The opening limit cam with the limit fit and the opening locking cam for locking the opening limit cam by rotating and tightening after the opening limit cam snaps into the gap on the output cam, the opening limit Both the cam and the opening locking cam are rotatably assembled on the outside of the bottom plate, and the bottom plate is provided with two limit posts for limiting the rotation angle of the opening limit cam, and one of the two limit posts is provided with a drive The second torsion spring where the opening limit cam moves closer to the output cam, and the cover is provided with a mechanism for transferring the rotation of the input cam to the opening locking cam to lock the opening limit cam when the corresponding switch is opened. Swing arm, one end of the swing arm is lapped on the input cam, and the other end is connected to the opening lock cam in transmission. There is a device between the swing arm and the housing to drive the end lapped on the input cam to move closer to the input cam. swing arm return spring. 4. The spring operating mechanism for switchgear according to claim 1, wherein the connecting rod assembly includes a triangular push plate with a small front and a large rear that is set up and down parallel to the cover plate, and the two push plates The rear end is fixedly connected by two spring hanging shafts, and the spring stretching seat is composed of the two spring hanging shafts, and the spring stretching seat guides and cooperates with the housing through one of the two hanging shafts. 5. The spring operating mechanism for switchgear according to claim 1, characterized in that, the drive disc device includes two turntables arranged in parallel and spaced up and down and fixed to each other, and the limiting disc is coaxially arranged on The output cam is fixedly matched with the output cam through bolts between the two turntables, and one of the two turntables located on the lower side is provided with a relief hole for letting go of the two bolts when the output cam rotates. 6 . The spring operating mechanism for a switchgear according to claim 2 , wherein a trip driving arm for prying the trip driving arm is provided on the cover plate. 6 . 7. The spring operating mechanism for a switchgear according to claim 2, wherein a first driving arm cantilever radially outward from the closing locking cam, and the first spring is arranged on the second Between a driving arm and the housing. 8. The spring operating mechanism for switchgear according to claim 2, characterized in that, the input cam is provided with a first claw used to toggle the tripping transmission arm, and the first claw is located on The circumferential outer wall surface of the input cam overhangs radially outward. 9. The spring operating mechanism for a switchgear according to claim 3, wherein the swing arm is connected to the opening locking cam through a camshaft with a crank arm that rotates with the cover plate and the bottom plate, The swing arm is in anti-rotation cooperation with the crank arm of the camshaft. 10. The spring operating mechanism for switchgear according to claim 3, characterized in that, the input cam is provided with a second finger for moving the swing arm, and the second finger is arranged on the input cam radially outwardly overhangs on the circumferential outer wall surface of the

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