CN108364819B - Isolating switch operating device and isolating switch with same - Google Patents

Abstract

The invention discloses an isolating switch operating device and an isolating switch with the same, comprising a shell and a grounding operating mechanism, wherein the grounding operating mechanism comprises a grounding operating shaft, a grounding transmission shaft, a transmission mechanism, a first elastic piece, a driving piece and a locking mechanism, the driving arm is locked after the grounding breaking of the locking mechanism is completed, and the driving piece positively rotates to a set position to unlock the locking mechanism and the locking fit of the driving arm. When the grounding operation mechanism is used for opening the brake, the driving arm and the locking mechanism form locking fit, so that the transmission mechanism keeps the opening position to be locked, and the function of limiting in-place opening is achieved; when the grounding operation mechanism is switched on, the driving arm is locked in the first half of the switching-on process, the first elastic piece stores energy and keeps the energy, and the driving arm starts to release energy after the driving arm is unlocked from the locking mechanism, so that quick switching-on is realized. The grounding operation mechanism has the limiting and retaining functions during opening and the energy storage and retaining functions during closing.

Description

An isolating switch operating device and an isolating switch having the same

Technical field

The present invention relates to the technical field of medium and high voltage electrical appliances, specifically to an isolating switch operating device. The invention also relates to an isolating switch.

Background technique

The load switch in the ring main unit usually requires three positions, that is, cutting off the load, isolating the circuit, and possibly grounding. In the existing technology, a three-position isolating switch is often used. The three-position isolating switch integrates the functions of an isolating switch and a grounding switch, and uses a knife to achieve mechanical locking to prevent the main circuit from being electrified and grounding the knife. , to avoid harm caused by misoperation.

The main part of the three-station isolating switch is the three-station operating mechanism. The existing three-station operating mechanism includes an isolation operating shaft, a grounding operating shaft, and an output shaft that connects the isolation operating shaft and the grounding operating shaft through a linkage mechanism. Both ends of the output shaft are provided with output levers for connecting the isolation switch shaft or the ground terminal. Among them, the isolation operation shaft and the grounding operation shaft are both equipped with energy storage springs. When the isolation operation shaft or the grounding operation shaft is manually idling to the zero point of the energy storage spring releasing potential energy, the energy storage spring can be used to quickly release the potential energy to drive the isolation operation shaft or The grounding operation shaft rotates, and drives the output arm on the output shaft to rotate in the three working positions of closing, opening and grounding through the linkage mechanism, thereby greatly shortening the closing and opening operations during the closing and opening operations and the grounding operation. The opening and closing time of the gate or ground terminal.

In order to ensure the safety of ground closing and quickly extinguish the arc, a vacuum arc extinguishing chamber is usually used at the ground end. Specifically, the grounding operating shaft is provided with an energy storage arm connected to the energy storage spring. The linkage mechanism connects the grounding operating shaft and the output shaft to transmit motion and force. The output arm is connected to the moving guide rod of the vacuum arc extinguishing chamber. The operation process is: manually rotate the grounding operating shaft, driving the energy storage arm to rotate so that the energy storage spring completes energy storage, passes through the center, and releases the energy storage. That is, the energy storage spring will start to release energy at the center of the energy storage. During the energy release process The energy storage arm drives the grounding operation shaft to rotate rapidly, and drives the output shaft to rotate through the connecting mechanism. When the output arm rotates with the output shaft, it drives the moving guide rod to move, so that the dynamic and static contact actions of the vacuum arc extinguishing chamber are separated. Switch on or off to realize the grounding opening and closing function of the isolating switch.

However, there are the following problems in the above-mentioned prior art:

First of all, during the grounding opening process, due to the large potential energy of the energy storage spring, the linkage mechanism and the grounding operating shaft move to the opening position under the action of the energy storage spring, which will cause a mechanical impact. This mechanical impact will cause the grounding contact to Opening rebound, when there is a recovery voltage between the moving and static contacts of the vacuum arc extinguishing chamber, this opening rebound can easily cause arc re-ignition and burn the contacts, thus causing safety hazards and shortening the service life of the contacts;

Secondly, the linkage mechanism cannot accurately stop at the set position under the action of the energy storage spring, and usually moves beyond the set position; and during the ground closing process, the energy storage spring has a shorter energy storage time and will be released earlier. Energy storage, the energy storage effect is not good, which affects the closing speed of the operating mechanism and makes the closing time longer. This will cause arc discharge to occur at the moving end of the vacuum arc extinguishing chamber during the closing period, which will cause damage to the contacts. The damage is serious, resulting in safety hazards and shortening the service life of the contacts and vacuum interrupter.

Contents of the invention

Therefore, in view of the deficiencies in the prior art, the object of the present invention is to provide a method to lock the link mechanism and the output shaft in the opening position during the ground opening process, thereby preventing mechanical impact and avoiding the ground contact opening rebound. , and can maintain the energy storage of the energy storage spring during the ground closing process, improve the energy storage effect and closing speed, thereby avoiding arc discharge in the vacuum arc extinguishing chamber during closing, and is a safe and reliable isolation switch operating device.

To this end, the present invention provides an isolating switch operating device, which includes a housing and a grounding operating mechanism provided on the housing. The grounding operating mechanism includes a grounding operating shaft installed on the housing and is connected with the grounding operating mechanism. The grounding transmission shaft is linked with the grounding shaft and the transmission mechanism is linked with the grounding contact; the transmission mechanism includes a driving arm rotatably arranged on the grounding transmission shaft; the driving arm rotates forward or reversely to drive the transmission The mechanism moves to achieve ground closing or ground opening;

The grounding operating mechanism also includes:

A first elastic member is provided between the housing and the grounded transmission shaft; the first elastic member stores and releases energy during the forward or reverse rotation of the grounded transmission shaft;

The driving member is linked to the grounded transmission shaft. During the forward release and energy storage process of the first elastic member, the driving member drives the driving arm to rotate forward; during the reverse release and energy storage process, the drive arm is driven by the driving member. The component drives the drive arm to rotate reversely;

The locking mechanism locks the driving arm after the ground opening is completed, and the driving member rotates forward to the set position to unlock the locking cooperation between the locking mechanism and the driving arm.

As a preferred solution, the driving member includes two driving protrusions with the grounded transmission shaft as the central axis and spaced at a set arc. The driving arm is provided with a matching protrusion that matches the driving protrusion. When the driving member rotates around the axis, the cooperation between the driving protrusion and the matching protrusion drives the driving arm to rotate around the axis.

As a preferred solution, the locking mechanism includes a locking rod rotatably mounted on the housing, and a limiting groove is formed on one end of the locking rod toward the side of the grounded transmission shaft to limit the mating protrusion; The locking mechanism also includes a second elastic member disposed between the housing and the locking rod. Under the action of the second elastic member, the locking rod rotates in a direction close to the grounded transmission shaft; An unlocking protrusion is provided that rotates to a set position to drive the locking lever to reversely rotate and disengage from the locking protrusion against the elastic force of the second elastic member.

As a preferred solution, the driving member is a cam member that rotates with the grounded transmission shaft. The cam member includes an arc-shaped convex portion, and the two ends of the convex portion respectively form a first recess. The mouth end and the second notch end; the first notch end and the second notch end are two driving protrusions, and the two ends of the first notch end and the second notch end are The protruding portion between them is the unlocking protrusion.

As a preferred solution, it also includes an intermediate splint installed on the grounded transmission shaft and fixed relative to the housing, the locking lever is hinged to the intermediate splint through a rotation axis, and the second elastic member is sleeved on The torsion spring on the rotating shaft has one end against the housing and the other end against the locking rod.

As a preferred solution, the drive arm is provided with a pin member that passes through both sides of the drive arm, and one end of the pin member close to the middle splint is slidably disposed on the arc formed by the middle splint. shaped groove, and the other end close to the driving member is the matching protrusion.

As a preferred solution, one end of the grounded transmission shaft is provided with a rocker arm, the eccentric end of the rocker arm is fixedly connected to the first elastic member, and the other end of the first elastic member is rotatably connected to the housing. Mounting shaft provided on the body.

As a preferred solution, a grounded output shaft is installed on the housing, and the transmission mechanism further includes a contact linkage arm rotatably connected to the grounded output shaft and linked with the ground contact, and both ends A connecting plate that rotatably connects the contact linkage arm and the driving arm.

As a preferred solution, an isolation operating mechanism is also included. The isolation operating mechanism includes an isolation operating shaft and an isolation transmission shaft driven by the isolation operation shaft. The isolation transmission shaft is arranged parallel to the grounding transmission shaft. A first interlocking mechanism is provided between the isolation transmission shaft and the grounding transmission shaft to limit the rotation of the grounding transmission shaft in the isolation closing state, and a second interlocking mechanism to limit the rotation of the isolation transmission shaft in the grounding closing state. Locking mechanism.

As a preferred solution, the first interlocking mechanism includes a first limiting plate fixedly provided on the grounded transmission shaft, and a first limiting plate fixedly provided on the isolation transmission shaft corresponding to the first limiting plate. A second limiting plate, which is opposite or offset to the first limiting plate when the isolation transmission shaft is closed.

As a preferred solution, the second interlocking mechanism includes a third limiting plate formed on the driving arm, and a fourth limiting plate fixedly provided on the isolation transmission shaft corresponding to the third limiting plate. Positioning plate, the third limiting plate is opposite to or offsets the fourth limiting plate when the grounded transmission shaft is closed.

The present invention also provides an isolating switch, including the isolating switch operating device described in any one of the above.

The above technical solution of the present invention has the following advantages compared with the existing technology:

1. In the isolating switch operating device provided by the present invention, the grounding operating shaft is operated to drive the grounding transmission shaft and the driving arm to rotate forward or reverse to realize the grounding opening or closing action of the grounding operating mechanism. When the gate is opened, the driving part drives the driving arm and the locking mechanism to cooperate and lock, that is, the driving arm is restricted from rotating after the gate is opened in place, thereby keeping the transmission mechanism and the grounding contact locked in the opening position, and realizing the grounding operating mechanism from the closing state. When switching to the opening state, it limits the opening position, avoids mechanical impact during the opening process, and achieves the purpose of reducing the opening rebound on the moving end of the vacuum interrupter, with better safety; and during the grounding closing operation When the switch is closed, the driving arm is locked by the locking mechanism in the first half of the closing process and remains motionless, thus keeping the moving end of the vacuum arc extinguishing chamber motionless and making the driving arm in the movement section where the energy storage and release of the first elastic member are released; when the driving member drives When the driving arm and the locking mechanism unlock the cooperation, the grounded transmission shaft is quickly closed and rotated when the first elastic member is released, thereby driving the transmission mechanism to move to the closing position. This not only improves the energy storage effect of the first elastic member, The energy release is large, which in turn increases the closing speed of the grounding operating mechanism, ensuring that the dynamic and static contacts in the vacuum arc extinguishing chamber arc at the moment of closing, avoiding arc discharge in advance, reducing damage to the contacts, and improving The service life of the grounded arc interrupter. It can be seen from the above that the grounding operating mechanism of the present invention has both a limit holding function during opening and an energy storage holding function during closing.

2. In the isolating switch operating device provided by the present invention, the driving member includes two driving protrusions, and the driving arm is provided with a matching protrusion that matches the driving protrusions. The driving member rotates around the axis. The driving arm is driven to rotate around the axis through the cooperation of the driving protrusion and the matching protrusion. In the above structural arrangement, an arc is provided between the two driving protrusions, which can be used for closing and opening of the grounded transmission shaft. When the gate rotates, it cooperates with the matching protrusions respectively. That is, when the gate is grounded and closed, one of the driving protrusions drives the driving arm to rotate forward, and when the gate is grounded and opened, the other driving protrusion drives the driving arm to rotate reversely. , it can be seen that the driving part transmits motion and force between the grounded transmission shaft and the driving arm, the structure is simple, and the cooperation and transmission are reliable.

3. In the isolating switch operating device provided by the present invention, one end of the locking rod is formed with a limiting groove that limits the matching protrusion toward the side of the grounded transmission shaft, and the locking rod is located on the second elastic member. The second elastic member can provide a locking force when the matching protrusion is locked into the limiting groove, thereby achieving locking fit. The driving arm remains in the opening position and does not move, and plays the role of opening limit on the driving arm; in order to release the locking cooperation between the driving arm and the locking rod during the closing process, the driving part is provided with a device that rotates to the set position The locking lever is driven to overcome the elastic force of the second elastic member and reversely rotate to disengage the locking protrusion from the mating protrusion. When the grounding is closed, the unlocking protrusion of the driving member moves forward with the grounding transmission shaft. During the rotation process, the locking lever is pushed to rotate in the opposite direction, and is released until it is disengaged, so that the limiting groove and the mating protrusion are released from each other until they are disengaged. The design is reasonable and the cooperation is reliable.

4. In the isolating switch operating device provided by the present invention, the driving member is a cam member that rotates with the grounded transmission shaft. The cam member includes an arc-shaped protrusion, and the two sides of the protrusion are The ends respectively form a first notch end and a second notch end. This structural arrangement is such that when the cam component rotates in the reverse direction with the opening of the grounded transmission shaft, the first notch end drives the matching protrusion to snap into the limiting groove to form a locking fit, and When the cam component rotates forward with the closing of the grounded transmission shaft, the unlocking protrusion lifts the locking lever to a certain height to release the locking fit, and the second notch end drives the matching protrusion out of the limiting groove. and moves to the closing position. At this time, the locking rod abuts against the arc-shaped end surface of the unlocking protrusion under the action of the second elastic member.

5. In the isolation switch operating device provided by the present invention, the first elastic member is an energy storage spring, one end of which is fixed to the eccentric end of the rocker arm, and the other end is rotatably connected to the installation shaft provided on the housing. , during the grounding closing process, the first elastic member stores energy when it rotates with the grounding transmission shaft closing, and is always in the energy storage and holding state while the driving arm is locked by the locking mechanism, and gradually reaches the zero point of releasing potential energy. In order to meet the maximum energy storage effect of the energy storage spring when closing, the potential energy is large. When the locking cooperation between the locking mechanism and the driving arm is released, the first elastic member continues to rotate along with the grounded transmission shaft and releases the stored energy. When the energy is released, During the process, the grounding transmission shaft is driven to close and rotate quickly, increasing the closing speed, thus greatly shortening the closing operation time, ensuring the safety of grounding closing, and enabling the vacuum arc extinguishing chamber to quickly extinguish the arc.

6. In the isolation switch operating device provided by the present invention, a first interlocking mechanism for limiting the closing operation of the grounding transmission shaft and a first interlocking mechanism for limiting the isolation transmission are respectively formed between the isolation transmission shaft and the grounding transmission shaft. The second interlocking mechanism for the shaft closing operation. This structural arrangement ensures that the working position of the operating device is either at the isolation closing position, the isolation opening position or the grounding position, thereby achieving mechanical locking and preventing the main circuit from electrifying the ground knife. , to avoid hazards caused by misoperation and to meet relevant regulations for safe operation: the grounding switch must be disconnected first, and then the isolating switch must be closed to prevent the isolating switch from being closed before the grounding switch is opened, or the grounding switch from being closed before the isolating switch is disconnected. switch to ensure operational safety.

7. The isolating switch provided by the present invention is equipped with the above-mentioned isolating switch operating device, so it naturally has all the advantages brought by the provision of the above-mentioned isolating switch operating device, and can realize isolation closing, isolation opening and The switching between the three grounding and closing stations prevents the main circuit from electrifying the grounding knife and avoids hazards caused by misoperation.

Description of drawings

In order to more clearly explain the specific embodiments of the present invention or the technical solutions in the prior art, the drawings that need to be used in the description of the specific implementations or the prior art will be briefly introduced below.

Figure 1 is a schematic structural diagram of the isolating switch operating device provided by the invention;

Figure 2 is a schematic diagram of the internal structure of the isolating switch operating device shown in Figure 1;

Figure 3 is a schematic structural diagram of the inventive isolating switch operating device in the grounding closing/isolation opening position;

Figure 4 is a schematic structural diagram of the inventive isolating switch operating device in the grounding opening/isolating opening position;

Figure 5 is a schematic structural diagram of the inventive isolating switch operating device in the grounding opening/isolation closing position;

Figure 6 is a schematic diagram of the matching structure of the locking mechanism and the driving member of the present invention;

Explanation of reference signs: 1-housing, 11-intermediate splint, 12-first bevel gear, 13-second bevel gear, 2-ground operating shaft, 3-ground transmission shaft, 30-rocker arm, 31-driving part , 310-Protruding part, 311-First notch end, 312-Second notch end, 32-First limiting plate, 4-Output shaft, 5-Transmission mechanism, 50-Cooperating protrusion, 51-Drive Arm, 52-connecting plate, 53-contact linkage arm, 54-third limiting plate, 6-locking mechanism, 61-locking lever, 62-second elastic member, 63-limiting slot, 7-first elasticity parts, 8-isolate operating shaft, 9-isolate transmission shaft, 91-second limit plate, 92-fourth limit plate.

Detailed ways

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, not all, of the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

Example 1

This embodiment will be described in detail below with reference to the accompanying drawings:

This embodiment provides an isolating switch operating device as shown in Figures 1-6, including a housing 1 and a grounding operating mechanism provided on the housing. The grounding operating mechanism includes a grounding operating device installed on the housing 1. The operating shaft 2, the grounding transmission shaft 3 installed in the housing 1 and linked to the grounding operating shaft 2, and the transmission mechanism 5 linked to the grounding contact; the transmission mechanism 5 includes a rotatable installation on the grounding transmission shaft. The driving arm 51 on 3; the driving arm 51 rotates forward or reverse to drive the movement of the transmission mechanism 5 to achieve grounding closing or grounding opening;

The grounding operating mechanism also includes:

The first elastic member 7 is disposed between the housing 1 and the grounded transmission shaft 3; during the forward or reverse rotation of the grounded transmission shaft 3, the first elastic member 7 stores energy and releases energy. able;

The driving member 31 is provided in conjunction with the grounding transmission shaft 3. During the process of forward release of energy storage by the first elastic member 7, the driving member drives the driving arm 51 to rotate forward through the driving member, that is, the grounding closing operation is performed; During the process of reverse release of energy storage, the driving member 31 drives the driving arm 51 to rotate in the reverse direction, that is, the grounding opening operation is performed;

The locking mechanism 6 locks the driving arm 51 after the ground opening is completed, and the driving member 31 rotates forward to the set position to unlock the locking cooperation between the locking mechanism 6 and the driving arm 51 .

In the above embodiment, the grounding operating shaft 2 is manually operated to drive the grounding transmission shaft 3 and the driving arm 51 to rotate forward or reverse to realize the grounding opening or closing action of the grounding operating mechanism. When the grounding opening is completed, The driving member drives the driving arm 51 and the locking mechanism 6 to cooperate and lock, that is, the driving arm 51 is restricted from rotating after the opening is in place, thereby keeping the transmission mechanism and the grounding contact locked in the opening position, and realizing the grounding operating mechanism from the closing state. When switching to the opening state, it limits the opening position, avoids mechanical impact during the opening process, and achieves the purpose of reducing the opening rebound on the moving end of the vacuum interrupter, with better safety; and during the grounding closing operation When , the driving arm 51 is locked by the locking mechanism 6 in the first half of the closing process and remains motionless, thereby keeping the moving end of the vacuum arc extinguishing chamber motionless. The first elastic member 7 is in the energy storage holding state, and the driving arm is in the first position. In the movement section where the energy stored in the elastic member is released, when the driving member drives the driving arm 51 and the locking mechanism 6 to unlock and cooperate, the grounded transmission shaft is quickly closed and rotated when the first elastic member 7 releases energy, thereby driving the transmission mechanism to move to the closing position. This not only improves the energy storage effect of the first elastic member and releases energy, but also increases the closing speed of the grounding operating mechanism, ensuring that the dynamic and static contacts in the vacuum arc extinguishing chamber generate arcs at the moment of closing. , to avoid arc discharge in advance, reduce damage to contacts, and increase the service life of the grounded arc extinguishing chamber. It can be seen from the above that the grounding operating mechanism of the present invention has both a limit holding function during opening and an energy storage holding function during closing.

The following is a detailed description of the setting method of the driving part and the driving arm in conjunction with Figure 3-5:

The driving member 31 includes two driving protrusions with the grounded transmission shaft 3 as the central axis and spaced at a set arc. The driving arm 51 is provided with a matching protrusion 50 that matches the driving protrusion. When the driving member 31 rotates around the axis, the driving arm 51 is driven to rotate around the axis through the cooperation between the driving protrusion and the matching protrusion. In the above structural arrangement, the interval between the two driving protrusions is set to an arc, which can cooperate with the matching protrusion 50 respectively when the grounding transmission shaft 3 is closed and opened. That is, when the grounding is closed, one of the driving protrusions is used. The driving arm 51 is driven to rotate forward, and when the gate is grounded and opened, another driving protrusion is used to drive the driving arm 51 to rotate reversely. It can be seen that the driving member transmits motion and force between the grounded transmission shaft and the driving arm. , simple structure, reliable transmission.

The following is a detailed description of the specific setting method of the locking mechanism in conjunction with Figure 3-6:

The locking mechanism 6 includes a locking lever 61 that is rotatably mounted on the housing 1. One end of the locking lever 61 faces the grounded transmission shaft 3 and is formed with a limiting groove 63 that limits the matching protrusion 50. The slot is a groove structure with two protrusions facing the open end of the cam component; the locking mechanism 6 also includes a second elastic member 62 disposed between the housing and the locking rod 61. Under the action of the member 62, the locking lever 61 rotates toward the position close to the mating protrusion. With this structure, the second elastic member 62 can be locked into the limiting groove 63 when the mating protrusion 50 is used. The locking force is provided during the middle time to achieve locking fit. At this time, the driving arm 51 remains in the opening position and does not move, which plays an opening limiting role for the driving arm; further preferably, in order to be able to release during the closing process For locking cooperation between the driving arm and the locking lever, the driving member 31 is provided with a mechanism that rotates to a set position to drive the locking lever 61 to overcome the elastic force of the second elastic member 62 and reversely rotate to disengage from the locking protrusion 50 When the grounding is closed, the unlocking protrusion of the driving member 31 rotates forward with the grounding transmission shaft to the unlocking position and pushes the locking lever 61 to rotate reversely, so that the limiting groove 63 and the matching protrusion Starting from 50, they loosen each other until they are separated. The design is reasonable and the cooperation is reliable.

According to the above embodiment, as shown in FIG. 6 , the driving member 31 is a cam member that rotates with the grounded transmission shaft 3 . The cam member includes an arc-shaped protrusion 310 . The two ends of the protrusion form a first notch end 311 and a second notch end 312 respectively; specifically, the first notch end 311 and the second notch end 312 are two of the driving protrusions. , the protruding portion between the two ends of the first notch end 311 and the second notch end 312 is the unlocking protrusion, that is, the first notch end 311 and the second notch end 312 are formed on both ends of the arc length of the unlocking protrusion. Through the above structural arrangement, when the cam component rotates reversely with the opening of the ground transmission shaft 3, the first notch end 311 drives the matching protrusion 50 to snap into the limiting groove 63 to form a Locking fit, and when the cam component rotates forward with the closing of the grounded transmission shaft 3, the locking lever 61 is lifted to a certain height by the unlocking protrusion to release the locking fit, and then the second notch end 312 The matching protrusion 20 is driven out of the limiting groove 63 and moves to the closing position. At this time, the locking rod 61 is pressed against the arc-shaped end surface of the unlocking protrusion under the action of the second elastic member to facilitate the opening movement. During the process, the first notch end can be used to drive the matching protrusion and the limiting groove to form a locking fit, and so on.

As shown in Figure 2, the isolating switch operating device of this embodiment also includes an intermediate clamping plate 11 installed on the grounded transmission shaft 3 and fixed relative to the housing 1, and the locking lever 61 is hinged to the intermediate plate through a rotation axis. In the clamping plate 11 , the second elastic member 62 is a torsion spring sleeved on the rotating shaft, one end of which is against the housing 1 , and the other end is against the locking rod 61 . This structural arrangement provides an installation position for the locking lever and the torsion spring. The torsion spring provides the locking lever with a biasing force to lock the mating protrusion 50, thereby enhancing the stability of the mating, or driving the The locking lever 61 is pressed against the cam member.

As a preferred embodiment, the driving arm 51 is provided with a pin member that passes through both sides of the drive arm 51 , and one end of the pin member close to the middle clamping plate 11 is slidably disposed in the middle. The other end of the arc-shaped groove formed on the splint 11 is the matching protrusion 50 close to the driving member 31. The pin member moves along the arc-shaped groove relative to one end of the fitting protrusion. The two ends of are respectively the closing position and the opening position where the pin shaft moves with the driving arm to close and open, and the pin shaft is locked by the locking rod when it reaches one end of the arc-shaped groove corresponding to the opening position. to avoid impact and rebound during the opening process.

The following is a detailed description of the arrangement of the first elastic member with reference to Figures 1 and 3-5:

One end of the grounded transmission shaft 3 is provided with a rocker arm 30. The eccentric end of the rocker arm 30 is fixedly connected to the first elastic member 7. The other end of the first elastic member 7 is rotatably connected to the housing. 1, the first elastic member 7 is an energy storage spring. From the above, it can be seen that during the grounding closing process, the first elastic member 7 stores energy when it rotates with the grounding transmission shaft closing. , and is in the energy storage and holding state while the driving arm 51 is locked by the locking mechanism 6, and gradually reaches the zero point of releasing the potential energy, so as to meet the maximum energy storage effect of the first elastic member when closing, the potential energy is large, and when the locking mechanism When the locking cooperation with the driving arm is released, the first elastic member 7 continues to rotate with the grounded transmission shaft and releases the stored energy. During the energy release process, it drives the grounded transmission shaft to quickly close and rotate, increasing the closing speed, thus achieving a greatly shortened time. The closing operation time ensures the safety of ground closing and enables the vacuum arc extinguishing chamber to quickly extinguish the arc.

In this embodiment, as shown in Figure 2, the grounding operation shaft 2 is connected to the grounding transmission shaft 3 through a gear transmission structure. The gear transmission structure includes a first cone disposed on the grounding operation shaft 2 in conjunction with each other. The gear 12, and the second bevel gear 13, which is jointly provided on the ground transmission shaft 3 and meshes with the first bevel gear 12, transmits motion and force between the ground operation shaft 2 and the ground transmission shaft through gear transmission. . As a specific arrangement, a grounding output shaft 4 is installed on the housing 1 , and the transmission mechanism 5 further includes a contact linkage rotatably connected to the grounding output shaft 4 and linked with the grounding contact. arm 53, and a connecting plate 52 with both ends rotatably connected to the contact linkage arm 53 and the driving arm 51. The driving arm 51 is connected to the grounded transmission shaft. From the above, it can be seen that the grounded transmission Shaft 3 transmits motion and force to the grounded output shaft through the transmission mechanism. One end of the grounded output shaft 4 is provided with an output arm for connecting the ground contact. During the entire transmission process, the ground contact on the output shaft is eventually The head moves to the grounding closing or opening working position. In this embodiment, the grounding contact is preferably the moving end of the vacuum arc extinguishing chamber, that is, the moving and static contacts of the vacuum arc extinguishing chamber are closed or opened.

The working principle of the grounding operating mechanism is explained below with reference to Figure 3-5:

The opening process of the grounding operating mechanism: the grounding operating shaft 2 drives the grounding transmission shaft 3 to rotate reversely through the gear transmission structure. The first elastic member 7 transitions from energy storage to energy release during the rotation of the grounding transmission shaft, and releases energy during the process. In this state, the rocker arm drives the grounded transmission shaft 3 to rotate rapidly, and the driving member 31 drives the driving arm 51 to rotate during the opening rotation of the grounding transmission shaft 3, so that the transmission mechanism 5 drives the grounded output shaft 4 to open and rotate, and The grounded output shaft drives the grounded contact to provide the required opening power and working stroke. When switching from the closing state to the opening state, the driving member drives the pin member on the driving arm to form a locking fit with the locking rod to maintain the opening position limit.

Closing process of the grounding operating mechanism: the grounding operating shaft 2 drives the grounding transmission shaft 3 to rotate forward through the gear transmission structure, the driving arm 51 is locked and remains stationary in the first half of the closing process, and the driving member 31 closes with the grounding transmission shaft. During the rotation of the gate, the locking lever 61 and the driving arm 51 unlock and cooperate. At the same time, the first elastic member 7 transitions from energy storage to energy release during the rotation of the grounded transmission shaft, and is driven by the rocker arm in the energy release state. The grounded transmission shaft 3 rotates rapidly, and then drives the transmission mechanism to drive the grounded output shaft 4 to perform closing rotation, and the output shaft drives the grounding contact to provide the required closing power and working stroke.

The operating device of this embodiment also includes an isolation operating mechanism. The isolation operating mechanism includes an isolation operating shaft 8 and an isolation transmission shaft 9 driven by the isolation operation shaft 8 . The isolation transmission shaft 9 is connected to the grounding transmission shaft 3 Parallel setting, in order to ensure the safe operation of the isolating switch, achieve mechanical locking between the isolating switch operating mechanism and the isolating switch operating mechanism to prevent misoperation between the isolating switch closing, isolating switch opening and isolating switch grounding positions. A first interlocking mechanism is provided between the isolation transmission shaft 9 and the grounding transmission shaft 3 to limit the rotation of the grounding transmission shaft 3 in the isolation closing state, and to limit the isolation transmission shaft 3 in the grounding closing state. 9 rotating second interlocking mechanism.

The specific settings of the first interlocking mechanism and the second interlocking mechanism will be described below with reference to Figures 3-5:

The first interlocking mechanism includes a first limiting plate 32 fixedly provided on the grounded transmission shaft 3, and a second limiting plate 32 fixedly provided on the isolation transmission shaft 9 corresponding to the first limiting plate 32. Limiting plate 91, the second limiting plate 91 is opposite or offset the first limiting plate 32 when the isolation drive shaft 9 is closed, and the isolation operating mechanism as shown in Figure 5 is in the closing position, At this time, the grounding operating mechanism is restricted by the first interlocking mechanism and cannot be closed. As a specific arrangement, the second interlocking mechanism includes a third limiting plate 54 formed on the driving arm 51 , and the corresponding third limiting plate 54 is fixedly provided on the isolation transmission shaft 9 The fourth limiting plate 92 on the grounding drive shaft 3 is opposite to or against the fourth limiting plate 92 when the grounding transmission shaft 3 is closed. The grounding operating mechanism as shown in Figure 3 is in In the closing position, the isolation operating mechanism is restricted by the second interlocking mechanism and cannot be closed. It can be seen from the above structure that the working position of the operating device is either at the isolation closing position, the isolation opening position or the grounding position to achieve mechanical locking, prevent the main circuit from electrifying the ground knife, and avoid the harm caused by misoperation to meet the requirements Relevant regulations for safe operation: The grounding switch must be opened first, and then the isolating switch must be closed to prevent the isolating switch from being closed before the earthing switch is opened, or from closing the grounding switch before the isolating switch is opened, to ensure operational safety.

Example 2

This embodiment provides an isolating switch, which includes the isolating switch operating device described in Embodiment 1. Therefore, it naturally has all the advantages brought by arranging the above isolating switch operating device, and can realize isolation closing and isolation opening. The switching between the three stations of grounding and closing is unique, which prevents the main circuit from electrifying the grounding knife and avoids the harm caused by misoperation.

Obviously, the above-mentioned embodiments are only examples for clear explanation and are not intended to limit the implementation. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. An exhaustive list of all implementations is neither necessary nor possible. The obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims (8)

1. The disconnecting switch operating device is characterized by comprising a shell (1) and a grounding operating mechanism arranged on the shell, wherein the grounding operating mechanism comprises a grounding operating shaft (2) arranged on the shell (1), a grounding transmission shaft (3) linked with the grounding operating shaft and a transmission mechanism (5) linked with a grounding contact; the transmission mechanism (5) comprises a driving arm (51) rotatably arranged on the grounding transmission shaft (3); the driving arm (51) rotates forwards or reversely to drive the transmission mechanism (5) to move so as to realize grounding switch-on or grounding switch-off;

the grounding operation mechanism further includes:

a first elastic member (7) provided between the housing (1) and the grounding transmission shaft (3); the first elastic piece (7) stores energy and releases energy in the forward or reverse rotation process of the grounding transmission shaft (3);

the driving piece (31) is arranged on the grounding transmission shaft (3) in a linkage way, and the driving arm (51) is driven to rotate forwards by the driving piece in the process of positively releasing energy storage by the first elastic piece (7); in the process of reversely releasing and storing energy, the driving arm (51) is driven to reversely rotate by the driving piece;

the locking mechanism (6) locks the driving arm (51) after the grounding brake is opened, and the driving piece (31) rotates forward to a set position to unlock the locking mechanism (6) and the driving arm (51) for locking and matching;

the driving piece (31) comprises two driving protrusions which are arranged by taking the grounding transmission shaft (3) as a central axis and setting radian at intervals, the driving arm (51) is provided with a matching protrusion (50) which is matched with the driving protrusion, and the driving arm (51) is driven to rotate around the shaft through the matching of the driving protrusion and the matching protrusion (50) in the process of rotating around the shaft;

the locking mechanism (6) comprises a locking rod (61) rotatably mounted on the shell (1), and a limit groove (63) for limiting the matching protrusion is formed at one end of the locking rod (61) towards one side of the grounding transmission shaft (3); the locking mechanism (6) further comprises a second elastic piece (62) arranged between the shell and the locking rod (61), and the locking rod (61) rotates towards the direction close to the grounding transmission shaft (3) under the action of the second elastic piece (62); an unlocking protrusion which rotates to a set position to drive the locking rod (61) to reversely rotate against the elastic force of the second elastic piece (62) and is separated from the locking of the matching protrusion (50) is arranged on the driving piece (31);

the driving piece (31) is a cam component which rotates along with the grounding transmission shaft (3), the cam component comprises an arc-shaped protruding part (310), and a first notch end (311) and a second notch end (312) are respectively formed at two ends of the protruding part; the first notch end (311) and the second notch end (312) are two driving protrusions, and a protruding part between two ends of the first notch end (311) and the second notch end (312) is the unlocking protrusion;

one end of the grounding transmission shaft (3) is provided with a rocker arm (30), the eccentric end of the rocker arm (30) is fixedly connected with the first elastic piece (7), and the other end of the first elastic piece (7) is rotatably connected with a mounting shaft arranged on the shell (1).

2. The disconnecting switch operating device according to claim 1, characterized in that: the device is characterized by further comprising an intermediate splint (11) which is arranged on the grounding transmission shaft (3) and fixed relative to the shell (1), the locking rod (61) is hinged to the intermediate splint (11) through a rotating shaft, the second elastic piece (62) is a torsion spring sleeved on the rotating shaft, one end of the second elastic piece is propped against the shell (1), and the other end of the second elastic piece is propped against the locking rod (61).

3. The disconnecting switch operating device according to claim 2, characterized in that: the driving arm (51) is provided with a pin shaft piece penetrating through the side surfaces of two sides of the driving arm (51), one end, close to the middle clamping plate (11), of the pin shaft piece is slidably arranged in an arc-shaped groove formed in the middle clamping plate (11), and the other end, close to the driving piece (31), of the pin shaft piece is the matching protrusion (50).

4. The disconnecting switch operating device according to claim 1, characterized in that: the shell (1) is provided with a grounding output shaft (4), the transmission mechanism (5) further comprises a contact linkage arm (53) which is rotatably connected with the grounding output shaft (4) and is in linkage with the grounding contact, and a connecting plate (52) of which the two ends are rotatably connected with the contact linkage arm (53) and the driving arm (51).

5. The disconnecting switch operating device according to any one of claims 1 to 4, characterized in that: the device is characterized by further comprising an isolation operating mechanism, wherein the isolation operating mechanism comprises an isolation operating shaft (8) arranged on the shell (1) and an isolation transmission shaft (9) driven by the isolation operating shaft, the isolation transmission shaft (9) is arranged in parallel with the grounding transmission shaft (3), a first interlocking mechanism which is used for limiting the rotation of the grounding transmission shaft in an isolation closing state and a second interlocking mechanism which is used for limiting the rotation of the isolation transmission shaft in the grounding closing state are arranged between the isolation transmission shaft (9) and the grounding transmission shaft (3).

6. The disconnecting switch operating device according to claim 5, characterized in that: the first interlocking mechanism comprises a first limiting plate (32) fixedly arranged on the grounding transmission shaft (3), and a second limiting plate (91) fixedly arranged on the isolation transmission shaft (9) corresponding to the first limiting plate (32), wherein the second limiting plate (91) is opposite to or propped against the first limiting plate (32) when the isolation transmission shaft (9) is switched on.

7. The disconnecting switch operating device according to claim 5, characterized in that: the second interlocking mechanism comprises a third limiting plate (54) formed on the driving arm (51) and a fourth limiting plate (92) fixedly arranged on the isolating transmission shaft (9) corresponding to the third limiting plate (54), and the third limiting plate (54) is opposite to or propped against the fourth limiting plate (92) when the grounding transmission shaft (3) is switched on.

8. An isolating switch, characterized in that: comprising a disconnector operating device as claimed in any of claims 1-7.