CN204966313U - Spring operating mechanism and sincere son of separating brake thereof - Google Patents

Abstract

The utility model discloses a spring operating mechanism and its opening detent. The main arm of the opening detent is hinged on the frame through a fixed hinge point, one of the two free ends of the main arm cooperates with the opening control part, and the other is hinged with an auxiliary swing arm through a movable hinge point. A compression spring is connected to the top. In this way, when the whole spring operating mechanism is in the energy storage and holding state of the opening spring, the auxiliary swing arm is braced between the main crank arm and the holding crank arm, and the auxiliary swing arm is in a dead point state where the extending direction passes the fixed hinge point or the holding crank The free end of the arm applies a counterclockwise torque to the main crank arm through the secondary swing arm, with the fixed hinge point as the fulcrum, so that the secondary swing arm is pinned between the main crank arm and the holding crank arm; when starting to open the brake, The free end of the secondary swing arm swings counterclockwise with respect to the main crank arm, and leaves the swing space for the free end of the holding crank arm. Utilization of shelf space.

Description

Spring operating mechanism and its opening detent

technical field

The utility model relates to a spring operating mechanism and its opening detent.

Background technique

At present, in the high-voltage switchgear, the circuit breaker mechanism mostly adopts the spring operating mechanism, and its main transmission mainly adopts four-link and five-link structures, and the transmission links have many parts, low reliability and high cost.

Chinese patent document CN103456558A (published on December 18, 2013) discloses "an operating mechanism of a vacuum circuit breaker", including a frame and an energy storage mechanism assembled on it, a closing mechanism, an opening mechanism and an output mechanism , the energy storage mechanism includes an energy storage shaft assembled on the frame, and the two ends of the energy storage shaft are respectively connected to the energy storage tension spring through the energy storage crank arm; the closing mechanism includes a closing half shaft assembled on the frame, fixed on The driving cam on the energy storage shaft and the energy storage holding detent between the closing half shaft and the driving cam, when the energy storage shaft is in place, the two ends of the energy storage holding detent are pressed against the driving cam and the closing half shaft to keep the energy storage state of the energy storage shaft; the opening mechanism includes the opening half shaft assembled on the frame and the opening detent fixed on the energy storage shaft; the output mechanism includes the The output shaft, the output shaft is connected to the insulating pull rod by connecting the crank arm and the linkage mechanism. The output shaft is equipped with a power crank arm that cooperates with the driving cam and a holding crank arm that cooperates with the opening detent. The main shaft is driven to rotate, and when the output shaft is in the closing state, the two ends of the opening detent are pressed against the holding arm and the opening half shaft respectively. In this way, during the energy storage process, when the energy storage shaft rotates in place, the two ends of the energy storage holding detent are respectively pressed against the driving cam and the closing half shaft to maintain the energy storage state of the energy storage shaft; , by turning the closing half shaft, the restriction of the closing half shaft on the energy storage holding detent is released, and at this time the energy storage shaft is also released from the constraint, and the energy storage shaft will drive the driving cam to hit the free end of the driving crank arm, so that the driving crank The arm drives the output shaft to rotate until the output shaft rotates to the closing position, and the two ends of the opening detent are respectively pressed against the holding arm and the half shaft of the opening to keep the output shaft in the closed state; When opening the brake, by rotating the opening half shaft, the opening half shaft releases the opening detent, so that the holding lever arm is released from the restraint, and the output shaft rotates to the opening state under the action of the opening spring. However, because the parts where the opening detent and the holding crank arm cooperate with each other are relatively fixed or integrated with respect to the rest of the respective parts, so when the opening action is started, in order to get out of the way of the rotation radius of the holding crank arm, the opening detent It needs to be rotated at a larger angle, so when the opening mechanism is arranged, it is necessary to leave a large swing space for the opening detent, resulting in a waste of limited installation space on the frame of the operating mechanism and increasing the operating speed. The difficulty of disassembly and assembly of the mechanism.

Utility model content

The purpose of the utility model is to provide a gate opening detent with a small swing range when the gate is opened and tripped. At the same time, the utility model also provides a spring operating mechanism using the gate detent.

In order to achieve the above object, the technical scheme of the spring operating mechanism in the utility model is as follows:

The spring operating mechanism includes the frame and the holding arm and the opening detent that are rotatably assembled on the frame. One end of the opening detent is used to cooperate with the free end of the holding arm, and the other end of the opening detent is connected to a When the opening spring is stored and maintained, the opening detent locks the holding arm, and when the opening starts, the opening detent is released to release the restraint on the holding arm, and the opening detent is defined. When the free end of the holding arm is opened, the rotation direction is clockwise. The opening detent includes the main arm which is assembled on the frame by rotating the fixed hinge point. One of the two free ends of the main arm is connected with the opening control part. The other is hinged with an auxiliary swing arm through a movable hinge point, and the auxiliary swing arm is connected with a clockwise torque applied to it, so as to press the free end of the auxiliary swing arm against the free end of the holding crank arm. Compress the spring, and when the opening spring is stored and maintained, the auxiliary swing arm is braced between the main crank arm and the holding crank arm, and the auxiliary swing arm is in the dead point state where the extension direction passes the fixed hinge point or the free swing arm is kept. The torque in the counterclockwise direction with the fixed hinge point as the fulcrum is applied to the main crank arm through the secondary swing arm; at the beginning of opening, the main crank arm is at the hinged end of the secondary swing arm and the free end of the secondary swing arm is kept. A torque in the counterclockwise direction is applied to the auxiliary swing arm, and the free end of the auxiliary swing arm swings counterclockwise relative to the main crank arm, and leaves the swing space for maintaining the free end of the crank arm.

The free end of the retaining arm is protrudingly provided with a stopper edge that prevents the free end of the secondary swing arm from falling out when the opening spring is stored and held. The side of the stopper edge near the hinge of the retainer arm has When starting to open the brake, push the pushing surface of the free end of the auxiliary swing arm counterclockwise.

The rotating device on the fixed hinge point is equipped with an energy storage and holding detent whose rotation axis coincides with the opening detent, and the energy storage and holding detent and the opening detent can rotate relatively.

The free end of auxiliary swing arm is rotatably equipped with the opening roller that rolls and fits with the free end of the crank arm.

The compression spring is a torsion spring assembled before the main crank arm and the auxiliary swing arm.

The frame is equipped with an output crank arm that is fixedly arranged relative to the holding crank arm. A connecting long hole extending along the overhanging direction is opened on the output crank arm. A connecting slider is installed in the connecting long hole along the direction of the hole length. The connecting slider The block is hinged between the free end of the output crank arm and the input end of the insulating tie rod.

On the same side of the opening detent and the holding crank arm, there is a drive cam that is rotatably assembled on the frame, and a power crank arm that is fixedly set relative to the holding crank arm is installed on the frame. The power crank arm is used to start closing. When the brake is hit by the drive cam, it rotates counterclockwise.

The opening control part is an opening semi-shaft which is rotatably assembled on the frame.

In the utility model, the technical scheme of the detent of the gate opening is as follows:

The opening detent includes the main crank arm which is used to rotate and assemble on the frame through the fixed hinge point. One of the two free ends of the main crank arm is used to cooperate with the opening control part, and the other is hinged with a hinge through the movable hinge point. The secondary swing arm is connected with a compression spring that applies a clockwise torque to the secondary swing arm to compress the free end of the secondary swing arm against the free end of the holding crank arm.

The free end of the secondary swing arm is rotatably equipped with an opening roller for rolling engagement with the free end of the crank arm.

In the utility model, the main crank arm of the gate opening detent is hinged on the frame through a fixed hinge point, one of the two free ends of the main crank arm is used to cooperate with the gate opening control part, and the other is hinged to a secondary gate through a movable hinge point. The swing arm is connected with a compression spring that applies a clockwise torque to the secondary swing arm to compress the free end of the secondary swing arm against the free end of the crank arm. In this way, when the whole spring operating mechanism is in the energy storage and holding state of the opening spring, the secondary swing arm is braced between the main crank arm and the holding crank arm, and the secondary swing arm is in the dead point state where the extending direction passes the fixed hinge point or the holding crank The free end of the arm applies a torque in the counterclockwise direction with the fixed hinge point as the fulcrum to the main crank arm through the secondary swing arm, so that the secondary swing arm is fixed between the main crank arm and the holding crank arm, and the entire opening detent It is also locked between the holding crank arm and the opening control part; at the beginning of opening, the hinged end of the main crank arm on the secondary swing arm and the free end of the holding crank arm on the secondary swing arm both apply a counterclockwise direction to the secondary swing arm. torque, the free end of the secondary swing arm swings counterclockwise relative to the main crank arm and leaves the swing space for the free end of the holding crank arm. Turn down to realize the output of the opening power. At the same time, as far as the entire opening detent is concerned, the swing movement of the auxiliary swing arm is relatively small, so that the swing action of the auxiliary swing arm can be used to guide the swing action of the entire detent. Control the locking and release of the holding arm, thereby reducing the swing range of the opening detent during the opening action, which also reduces the space required for the opening detent action in the entire operating mechanism, and improves the utilization of the space on the rack Rate.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the spring operating mechanism of the present invention in the state of opening without energy storage;

The back view of Fig. 1 when Fig. 2;

Fig. 3 is a structural schematic diagram of an embodiment of the spring operating mechanism of the present invention under the energy storage state of the opening;

Fig. 4 is the back view of Fig. 3;

Fig. 5 is a schematic structural view of an embodiment of the spring operating mechanism of the present invention in a closed state without energy storage;

Fig. 6 is the back view of Fig. 5;

Fig. 7 is a structural schematic diagram of an embodiment of the spring operating mechanism of the present invention in the closed and stored energy state;

FIG. 8 is a rear view of FIG. 7 .

detailed description

Embodiment of the spring operating mechanism in the utility model: as shown in Figure 1 to Figure 8, the spring operating mechanism is a 12kV high transmission efficiency spring operating mechanism applied to the circuit breaker mechanism of the ring main unit and the switch cabinet , including the frame and the energy storage shaft, detent shaft, and output shaft that are rotatably assembled on the frame. The energy storage shaft is located on the left side of the line connecting the axis of the detent shaft and the output shaft. above the shaft. The anti-rotation of the energy storage rotating shaft is equipped with a drive cam 2 and an energy storage crank arm 1. The energy storage crank arm 1 is located on the front side of the drive cam 2 and is used to connect the energy storage spring. The free end of the drive cam 2 is equipped with a holding roller 13 for rotation. . The detent rotating shaft is equipped with an energy storage detent 10 and an opening detent whose rotation axes coincide with each other. The sub-brake 10 rotates, wherein the opening detent is composed of the main crank arm 11, the auxiliary swing arm 9 and the compression spring. The main crank arm 11 is rotated and assembled on the frame with the detent rotating shaft as the fixed hinge point. The main crank arm 11 is L The upper free end of the main crank arm 11 is connected with the opening half shaft 12 which is rotatably assembled on the frame, and the lower free end of the main crank arm 11 is hinged with the hinged end of the auxiliary swing arm 9 through a movable hinge point, so Said compression spring is a resetting torsion spring assembled between the hinged end of the auxiliary swing arm 9 and the lower free end of the main crank arm 11, and the resetting torsion spring applies a torque to the auxiliary swing arm 9 to make it rotate counterclockwise, while the auxiliary The free end of swing arm 9 is rotatably equipped with opening roller 8 . The output rotating shaft is a spline shaft, and the anti-rotation on the output rotating shaft is equipped with a power crank arm 4, a holding crank arm 7 and an output crank arm 5, wherein the holding crank arm 7 is overhanging to the upper left, and the free end of the holding crank arm 7 is convexly arranged. There is an anti-off block edge, and the anti-off block edge pushes against the right side; the power crank arm 4 hangs toward the lower left, and the free end of the power crank arm 4 is equipped with a closing roller 3; the output crank arm is 5 directions The lower right is overhanging, and the overhanging end of the output crank arm 5 is provided with a connecting long hole extending along the overhanging direction, and a connecting slider 6 is installed in the connecting long hole along the direction of the hole length, and the connecting slider 6 is hinged on the output crank. Between the free end of the arm 5 and the input end of the insulating pull rod, the insulating pull rod moves up and down through the output crank arm 5 to perform closing and opening operations. When the opening spring is stored and maintained, the auxiliary swing arm 9 is braced between the main crank arm 11 and the holding crank arm 7, and the free end of the holding crank arm 7 is applied to the main crank arm 11 with a fixed hinge point through the secondary swing arm 9. is the torque in the counterclockwise direction of the fulcrum, and the stopper can prevent the free end of the auxiliary swing arm 9 from coming out; The free end of the swing arm 9 applies counterclockwise torque to the secondary swing arm 9, and under the pushing action of the top of the stopper edge against the opening roller 8, the free end of the secondary swing arm 9 is relatively opposite to the main crank. The arm 11 swings counterclockwise and leaves the swing space holding the free end of the crank arm 7 .

The working process of the spring operating mechanism in the present embodiment is as follows:

As shown in Figure 1 and Figure 2, in the state of opening without energy storage, the entire spring operating mechanism is in the initial state, neither the energy storage spring nor the opening spring has energy storage, and the insulating pull rod is in the open state.

energy storage process. In the initial state, the energy storage motor of the spring operating mechanism is energized, and driven by the energy storage shaft, the drive cam 2 and the energy storage arm 1 rotate clockwise until the energy storage arm 1 elongates the energy storage spring to the set point. At the same time, the holding roller 13 on the driving cam 2 will also be locked by the energy storage holding detent 10, as shown in Figure 3 and Figure 4, the energy storage state of the opening is shown. At this time, the power supply of the energy storage motor is cut off, and the energy storage is completed. , the entire spring operating mechanism is in the state of closing and storing energy.

Closing process. 3 and 4, the closing electromagnet is triggered, and the closing electromagnet pushes the energy storage and holding detent 10 to rotate clockwise, and the energy storage and holding detent 10 releases the constraint on the holding roller 13, so that the drive cam 2 is in the storage position. Driven by the spring, it can rotate clockwise, and the driving cam 2 will collide with the closing roller 3 on the power crank arm 4 during the rotation, so that the power crank arm 4 drives the output shaft, outputs the pen, and keeps the crank arm 7 counterclockwise Rotate to the closed state position without energy storage shown in Figure 5 and Figure 6, and at the same time, under the action of the reset torsion spring, the auxiliary swing arm 9 will drive the opening roller 8 back to the free end of the holding arm 7, and the entire spring operating mechanism It is in the closing holding state, and also in the opening spring energy storage holding state.

If the energy storage motor is started at the position shown in Figure 5 and Figure 6 to the closed energy storage state shown in Figure 7 and Figure 8, the drive cam 2 and the energy storage crank arm 1 will repeat the power of clockwise rotation during the energy storage process, so that The whole spring operating mechanism is in the closing energy storage holding state again.

Opening process. In the position shown in Figure 5 and Figure 6, under the action of the manual opening mechanism or the opening electromagnet, the opening half shaft 12 is rotated, and the main crank arm 11 rotates clockwise from the half shaft groove of the opening half shaft 12, so that The lower free end of the main crank arm 11 drives the hinged end of the auxiliary swing arm 9 to rotate clockwise, while keeping the crank arm 7 under the action of the opening spring connected to the power crank arm 4 to press the free end of the auxiliary swing arm 9 to counterclockwise. Rotate clockwise, so that the secondary swing arm 9 releases the constraint on the holding lever 7, so that the output lever 5 can rotate clockwise to the position shown in Figure 1 and Figure 2 under the action of the opening spring, and drives the insulating pull rod to perform the opening action .

In this embodiment, the transmission structure of the spring operating mechanism is simple, and there are very few parts. The driving cam 2 directly hits the power swing arm to drive the insulating rod and the arc extinguishing chamber to close and open. Compared with the common four-bar linkage mechanism (VS1) , The main transmission parts of the utility model can reduce 3 links, compared with the five-link mechanism (VK) to reduce 4 transmission links, the structure is compact, and the space is small. Compared with the VS1 mechanism, the output angle of the output swing arm can be reduced by 30%, and the swing amplitude H of the output swing arm during the opening and closing process can also be reduced. The smaller the output angle, the smaller the loss of efficiency and improve the transmission efficiency. Therefore, the opening detent in the spring operating mechanism in this embodiment is suitable for small-angle and large-angle release devices, and can be used in different mechanisms to realize the output of large and small angles, and can reliably maintain and release.

In other embodiments, the compression spring can also be an ordinary helical columnar spring connected between the auxiliary swing arm and the main crank arm or between the auxiliary swing arm and the frame.

In other embodiments, the locking and release of the main crank arm can also be directly controlled by the opening electromagnet or the manual opening push rod, so that the locking and release of the main crank arm can be performed by replacing the opening half shaft with these opening control parts. freed.

In the above-mentioned embodiment, when the whole spring operating mechanism is in the energy storage and holding state of the opening spring, the secondary swing arm is braced between the main crank arm and the holding crank arm, and the free end of the holding crank arm passes through the secondary swing arm to the main swing arm. The crank arm applies a counterclockwise torque with the fixed hinge point as the fulcrum, so as to ensure that the opening detent is in a locked state through the blocking effect of the opening half shaft on the counterclockwise turning of the detent, while in other embodiments In this case, when the entire spring operating mechanism is in the state of holding the energy storage of the opening spring, the auxiliary swing arm can also be in the dead point state where the extension direction passes the fixed hinge point, and the opening detent cannot rotate through the dead point position, ensuring the opening The detent is locked.

The embodiment of the gate opening detent in the utility model: the structure of the gate opening detent in this embodiment is the same as the structure of the gate opening detent in the above embodiment, so it will not be described again.

Claims (10)

1. spring operating mechanism, comprise the maintenance connecting lever of frame and upper rotation assembling thereof, the sincere son of separating brake, one end of the sincere son of separating brake is used for coordinating with keeping the free end of connecting lever, the other end of the sincere son of separating brake is connected with for keeping connecting lever when tripping spring energy storage keeps by the sincere son locking of separating brake, discharge the sincere son of separating brake when starting separating brake and remove the separating brake control piece to the constraint keeping connecting lever, and to define the sincere son of separating brake getting out of the way rotation direction when keeping the free end of connecting lever be clockwise direction, it is characterized in that, the sincere attached bag of separating brake is drawn together and is rotated by determining hinge the main connecting lever be assemblied in frame, in two free ends of main connecting lever, one coordinates with separating brake control piece, another is hinged with secondary swing arm by dynamic hinge, secondary swing arm is connected with and applies clockwise moment of torsion to it, for the holddown spring free end of secondary swing arm is pressed on the free end keeping connecting lever, and when tripping spring energy storage keeps, secondary swing arm stretching is at main connecting lever and keep between connecting lever, secondary swing arm be bearing of trend cross the dead point state of determining hinge or keep the free end of connecting lever by secondary swing arm to main connecting lever applying to determine the anticlockwise moment of torsion that hinge is fulcrum, when starting separating brake, main connecting lever secondary swing arm hinged end and keep connecting lever all to apply anticlockwise moment of torsion to secondary swing arm at the free end of secondary swing arm, the free end of secondary swing arm is relative to main connecting lever counter-clockwise swing and get out of the way the swing space of free end keeping connecting lever.

2. spring operating mechanism according to claim 1, it is characterized in that, keep the free end of connecting lever being convexly equipped with the anti-avulsion gear edge stoping the free end of secondary swing arm to be deviate from when tripping spring energy storage keeps, the side near maintenance connecting lever articulated section on anti-avulsion gear edge has the pushing tow face for the free end of the secondary swing arm of pushing tow counterclockwise when starting separating brake.

3. spring operating mechanism according to claim 1, is characterized in that, determine hinge is rotatably equipped with the energy storage that pivot center overlaps with the sincere son of separating brake and keep sincere son, energy storage keeps sincere son and the sincere son of separating brake to relatively rotate.

4. spring operating mechanism according to claim 1, is characterized in that, the free end of secondary swing arm is rotatably equipped with and the separating brake roller keeping the free end of connecting lever to roll coordinating.

5. spring operating mechanism according to claim 1, is characterized in that, holddown spring is be assemblied in the torsion spring before main connecting lever and secondary swing arm.

6. spring operating mechanism as claimed in any of claims 1 to 5, it is characterized in that, frame is equipped with the output toggle arm relative to keeping connecting lever to be fixedly installed, output toggle arm offers the connection elongated hole extended along overhanging direction, connect in elongated hole and be equipped with connection sliding block along hole length direction guiding, connection sliding block is hinged between the free end of output toggle arm and the input of insulated tension pole.

7. spring operating mechanism according to claim 6, it is characterized in that, the homonymy of the sincere son of separating brake and maintenance connecting lever is provided with the driving cam rotating and be assemblied in frame, and in frame, being equipped with the power connecting lever that be fixedly installed relative to keeping connecting lever, power connecting lever is used for being clashed into by driving cam when starting to close a floodgate and rotating counterclockwise.

8. spring operating mechanism as claimed in any of claims 1 to 5, is characterized in that, separating brake control piece is rotate the separating brake semiaxis be assemblied in frame.

9. the sincere son of separating brake, it is characterized in that, comprise for rotating by determining hinge the main connecting lever be assemblied in frame, in two free ends of main connecting lever, one is hinged with secondary swing arm for coordinating with separating brake control piece, on another by dynamic hinge, secondary swing arm is connected with and applies clockwise moment of torsion, for the holddown spring be pressed on by the free end of secondary swing arm on the free end keeping connecting lever to it.

10. the sincere son of separating brake according to claim 9, is characterized in that, the free end of secondary swing arm is rotatably equipped with for rolling the separating brake roller coordinated with keeping the free end of connecting lever.