Three position operating mechanism for high voltage switchgear

Abstract

The application discloses a three-position operating mechanism for a high-voltage switch cabinet, comprising a first functional part, a second functional part and a lock position assembly; the lock position assembly comprises a rotating movable part; a limiting part and a bearing part are arranged on the two sides of the movable part respectively; the pair of movable parts cooperate to form an opening and closing structure, and the limiting parts and the bearing parts on the two movable parts are staggered and opposite to each other; the first functional part and the second functional part are arranged on the opposite sides of the lock position assembly respectively; the first functional part or the second functional part is in limiting cooperation with the limiting part during movement; the first functional part or the second functional part pushes away the bearing part during movement, drives the limiting part on the other side of the same movable part to be released from limiting; the first functional part and the second functional part need to reach the limiting position to unlock the other one, so that two-section control of the three-position switch is effectively realized, and the operation safety is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-voltage power distribution equipment, and particularly relates to a three-position operating mechanism for a high-voltage switch cabinet. BACKGROUND

[0002] The high-voltage switch cabinet is a key device for power transmission and control in an electric power grid. In a 10kV-40.5kV series high-voltage switch cabinet, a three-position switch is a standard configuration, and a matched operating mechanism is required to switch the working state of the switch.

[0003] At present, the three-position switch operating mechanisms on the market are basically two operating shafts and one motor. When the interlocking device is opened, the handle is inserted into one of the shafts, and after the handle is shaken for several turns, the three-position switch is switched between the working position and the isolation position. When the interlocking device is opened, the handle is inserted into the other shaft, and after the handle is shaken for several turns, the three-position switch is switched between the isolation position and the grounding position. Since a mechanical limit must be provided in the three positions, a worm gear or a pinion gear is used, that is, after the worm or the pinion gear moves for several turns, the worm gear or the gear moves to a certain angle and is mechanically limited. If the next operation is required, the mechanical limit must be manually or electrically removed. When the motor is used for operation, the mechanical limit must be removed before movement. The motor is switched between forward and reverse rotation, thereby switching between the three positions.

[0004] However, the two operating shafts of the existing three-position operating mechanism on the market are directly linked inside the mechanism, that is, when one of the shafts is operated, the other shaft is also rotated synchronously, and the two shafts can be operated to switch between the working position, the isolation position and the grounding position. It is not a real double-shaft mechanism, and misoperation is easy to occur. The operator needs to give a certain torque M to the manual operating handle during the use of the mechanism. Due to different strength and different feeling of the operator, the operator may continue to operate or end the operation in advance after the mechanism moves to a certain position. Due to the structural characteristics of the existing operating mechanism, the force on the limit structure at this time is very large, which easily causes the limit piece to deform and damage and cannot be reset. The mechanical limit device that cannot be reset may have the following two consequences: the next manual operation cannot be performed or the electric operation cannot remove the limit, and the electric operation cannot be performed. If the manual or electric operation is forced, the three-position operating mechanism will be damaged, which cannot meet the stable and reliable requirements of the electric power system, and further affects the safety of the high-voltage switch cabinet and the safety of the personnel. SUMMARY

[0005] The application aims at providing a three-position operating mechanism for a high-voltage switch cabinet.

[0006] The three-position operating mechanism for a high-voltage switch cabinet comprises a first functional part, a second functional part and a locking assembly, the locking assembly comprises rotating movable parts, the two sides of the movable parts are respectively provided with limiting parts and bearing parts, the limiting parts and the bearing parts on the two movable parts are staggered, the first functional part and the second functional part are respectively arranged on the opposite sides of the locking assembly, the first functional part or the second functional part is limited by the limiting part during movement, the first functional part or the second functional part pushes away the bearing part during movement, and the limiting part on the other side of the same movable part is driven to be released from the limitation, when the first functional part approaches the locking assembly, the high-voltage switch is switched from the connected position to the disconnected position, and when the second functional part moves away from the locking assembly, the high-voltage switch is switched from the disconnected position to the grounded position.

[0007] Further, the elastic parts are arranged between the two movable parts, the elastic parts drive the two movable parts to close, and the limiting parts reach the limiting positions in the closed state, and when the bearing parts are pressed by the first functional part or the second functional part, the corresponding movable parts rotate to open against the elastic force.

[0008] Further, a pair of protrusions are respectively arranged on the first functional part and the second functional part, and the two protrusions are respectively arranged on the movement paths and matched with the limiting parts and the bearing parts.

[0009] Further, the ends of the first functional part and the second functional part away from the locking assembly are provided with interlocking plates, the interlocking plates are connected with interlocking springs, the interlocking plates are connected with the circuit breakers, when the high-voltage switch is in the connected position, the first functional part is pressed on the surface of the interlocking plate, and the circuit breaker keeps in the connected state, when the first functional part moves towards the locking assembly, the interlocking plate drives the circuit breaker to be disconnected under the pushing of the interlocking spring.

[0010] Further, when the high-voltage switch is in the grounded position, the second functional part presses the interlocking plate to drive the circuit breaker to keep in the connected state, and when the second functional part moves towards the locking assembly, the interlocking plate drives the circuit breaker to be disconnected under the pushing of the interlocking spring.

[0011] Further, the first function piece and the second function piece are respectively provided with an auxiliary switch module on the stroke; the auxiliary switch module comprises an auxiliary switch fixed plate; the two ends of the auxiliary switch fixed plate are bent to stroke abutting ends, which block the limit position of the first function piece or the second function piece.

[0012] Further, the first function piece is driven to reciprocate by a first lead screw; the second function piece is driven to reciprocate by a second lead screw; the first lead screw and the second lead screw are respectively driven to rotate by a first motor and a second motor; the auxiliary switch module comprises an auxiliary switch; the auxiliary switch is provided with a pair of auxiliary switches corresponding to two limit positions of the stroke of the first function piece or the second function piece; when the first function piece or the second function piece moves to the limit position of the stroke of any end, the auxiliary switch is disconnected from the power supply circuit of the first motor or the second motor.

[0013] Further, the auxiliary switch module comprises an auxiliary switch pressing plate; the auxiliary switch pressing plate is rotationally connected with the auxiliary switch fixed plate; the rotation path of the auxiliary switch pressing plate corresponds to the triggering part of the auxiliary switch; when the first function piece or the second function piece moves to the limit position of the stroke of any end, the auxiliary switch pressing plate is pressed to rotate and trigger the auxiliary switch.

[0014] Further, the moving speed of the first function piece is greater than or less than the moving speed of the second function piece.

[0015] Beneficial effects: (1) The three-position operating mechanism for the high-voltage switch cabinet comprises a first functional piece, a second functional piece and a locking assembly; the locking assembly comprises rotating movable pieces; the two sides of the movable pieces are respectively provided with limiting portions and bearing portions; the pairs of movable pieces cooperate to form an opening and closing structure, and the limiting portions and the bearing portions on the two movable pieces are staggered and opposite; the first functional piece and the second functional piece are respectively arranged on the opposite sides of the locking assembly; the first functional piece or the second functional piece is limited in cooperation with the limiting portion during movement; the first functional piece or the second functional piece squeezes the bearing portion during movement, drives the limiting portion on the other side of the same movable piece to be released from the limiting position; the first functional piece and the second functional piece need to reach the limiting position to unlock each other, so that two-section control of the three-position switch is effectively realized, and the operation safety is significantly improved; (2) The three-position operating mechanism for the high-voltage switch cabinet is provided with elastic pieces connected between the pairs of movable pieces; the elastic pieces drive the pairs of movable pieces to close, and the limiting portions reach the limiting position in the closed state; when the bearing portions are squeezed by the first functional piece or the second functional piece, the corresponding movable pieces are rotated to open against the elastic piece tension; under the action of the tension, the movable piece is squeezed and returns to the initial limiting position at a faster speed, which is beneficial to improve the efficiency and action stability of the structure state switching; (3) The first functional piece is driven to reciprocate by the first lead screw; the second functional piece is driven to reciprocate by the second lead screw; the first lead screw and the second lead screw are respectively driven to rotate by the first motor and the second motor; the auxiliary switch module comprises an auxiliary switch; the auxiliary switch is provided with a pair on the stroke of the first functional piece or the second functional piece, and corresponds to two stroke limit positions; when the first functional piece or the second functional piece moves to any end of the stroke limit position, the auxiliary switch corresponds to disconnect the power supply circuit of the first motor or the second motor; by corresponding the stroke limit position and the on-off of the motor equipment circuit driven by the lead screw, damage of the components caused by overstroke can be effectively avoided, and the operation safety of the mechanism is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the right front upper side schematic diagram of the present application;

[0017] Figure 2 is the right rear lower side schematic diagram of the present application;

[0018] Figure 3 is the output mechanism part schematic diagram of the present application;

[0019] Figure 4 is the input control mechanism part left front lower side schematic diagram of the present application;

[0020] Figure 5 is the input control mechanism part right rear lower side schematic diagram of the present application;

[0021] Figure 6is the working state mechanism schematic diagram of the present application;

[0022] Figure 7 is the isolation state mechanism schematic diagram of the present application;

[0023] Figure 8 is the grounding state mechanism schematic diagram of the present application;

[0024] Figure 9 is the auxiliary switch position schematic diagram of the present application;

[0025] Figure 10 is the auxiliary switch switching schematic diagram of the present application;

[0026] Figure 11 is the interlocking plate shape schematic diagram of the present application;

[0027] Figure 12-1 is the first function piece shape schematic diagram of the present application;

[0028] Figure 12-2 is the second function piece shape schematic diagram of the present application;

[0029] Figure 13 is the clutch gear schematic diagram of the present application;

[0030] Figure 14 is the sectional view of Figure 13 ;

[0031] Figure 15 is the output mechanism part removed bottom plate structure schematic diagram of the present application.

[0032] The various reference signs in the drawings are as follows:

[0033] 1, bottom plate, 2, second partition plate, 3, left sealing plate, 4, face plate, 5, right sealing plate, 6, motor mounting plate, 8, first partition plate, 9, auxiliary switch module, 10, first lead screw, 11, second lead screw, 12A, first motor, 12B, second motor, 13, movable piece, 13A, first movable piece, 13B, second movable piece, 13a, limiting part, 13b, bearing part, 14, elastic piece, 15, first function piece, 16, second function piece, 17, middle partition plate, 18, interlocking plate, 19, interlocking guide rod, 20, interlocking spring, 91, auxiliary switch fixing plate, 92, auxiliary switch pressing plate, 93, auxiliary switch. DETAILED DESCRIPTION

[0034] The present application will be further described below in conjunction with the drawings.

[0035] The utility model provides a three position operating mechanism for high voltage switch cabinet, including first function piece 15, second function piece 16 and lock position subassembly, the lock position subassembly includes the movable part 13 of rotation, and the both sides of movable part 13 are provided with limit part 13a and the bearing part 13b respectively, and the limit part 13a and the bearing part 13b on two movable parts 13 are staggered opposite, and the first function piece 15 and second function piece 16 are arranged on the opposite sides of lock position subassembly respectively, and the first function piece 15 or second function piece 16 is limited cooperation in movement with limit part 13a, and the first function piece 15 or second function piece 16 is extruded in movement and opens the bearing part 13b, drives the limit part 13a on the other side of the same movable part 13 to be released from the limit, when the first function piece 15 is close to lock position subassembly, and high voltage switch switches from the communication position to the disconnected position, when the second function piece 16 is away from lock position subassembly, and high voltage switch switches from the disconnected position to the grounding position.

[0036] Reference Figures 6-8 The movement of the first function piece 15 corresponds to the switching of the three position switch between the communication state and the disconnected state, and the movement of the second function piece 16 corresponds to the switching of the three position switch between the disconnected state and the grounding state; because the first function piece 15 and the second function piece 16 need to reach the limit position to unlock each other, two-stage control of the three position switch is effectively realized, and the operation safety is significantly improved.

[0037] The elastic element 14 is arranged between the pair of movable parts 13; the elastic element 14 drives the pair of movable parts 13 to fold, and the limit part 13a reaches the limit position in the folded state; when the bearing part 13b is extruded by the first function piece 15 or the second function piece 16, the corresponding movable part 13 rotates to open against the elastic force of the elastic element 14.

[0038] As can be seen from the drawings, the movable parts 13 on the left and right sides can rotate and droop to the limit position by relying on their own gravity, and the arrangement of the elastic element 14 can make them have a tightening constraint at the limit position, so that the working state is more reliable; under the action of the pulling force, the movable part 13 returns to the initial position faster after being extruded, which is beneficial to improving the efficiency and action stability of the structure state switching.

[0039] The first function piece 15 and the second function piece 16 are the same in structure; a pair of protruding parts are arranged on the first function piece 15 and the second function piece 16 respectively; the two protruding parts are matched with the limit part 13a and the bearing part 13b on the movement path respectively; wherein the two protruding parts on the first function piece 15 are 15a and 15c respectively, and the two protruding parts on the second function piece 16 are 16a and 16c respectively;

[0040] Due to the tension of the elastic member 14, in order to distinguish the two open-close matched movable members 13, the two sides are respectively named as the first movable member 13A and the second movable member 13B, both of which have the tendency of pulling and tightening, only by removing the restriction of the limiting portion 13a on the second movable member 13B on the cylindrical boss-shaped protruding portion at 16c of the second functional member 16, the second functional member 16 can move, so that the second lead screw 11 can rotate, and for the same reason, only by removing the restriction of the limiting portion 13a on the first movable member 13A on the cylindrical boss-shaped protruding portion at 15a of the first functional member 15, the first functional member 15 can move, so that the first lead screw 10 can rotate; in this way, the first functional member 15 and the second functional member 16 can only one of them be freely movable at the same time, thereby realizing the independence of the opening and closing switching operation between the first lead screw 10 and the second lead screw 11, and the safety is significantly improved.

[0041] The first functional member 15 and the second functional member 16 are provided with a first movable member 8 at one end away from the locking assembly, and a locking spring 20 is connected and arranged on the locking plate 18; the locking plate 18 moves along the locking guide rod 19, and is used for controlling the switching state of the matched circuit breaker in linkage; when the high-voltage switch is in the connected position, the first functional member 15 presses the surface of the locking plate 18, and the circuit breaker remains in the connected state; when the first functional member 15 moves to the locking assembly, the locking plate 18 drives the circuit breaker to be disconnected under the pushing of the locking spring 20.

[0042] When the high-voltage switch is in the grounding position, the second functional member 16 presses and drives the locking plate 18, and the circuit breaker remains in the connected state; when the second functional member 16 moves to the locking assembly, the locking plate 18 drives the circuit breaker to be disconnected under the pushing of the locking spring 20.

[0043] The first functional member 15 and the second functional member 16 are respectively provided with an auxiliary switch module 9 on the stroke; the auxiliary switch module 9 comprises an auxiliary switch fixed plate 91; the two ends of the auxiliary switch fixed plate 91 are bent to abut against the stroke limit position of the first functional member 15 or the second functional member 16.

[0044] For different specifications and batches of products, when the lead screw is designed to have different rotation numbers, the stroke distances of the first functional member 15 and the second functional member 16 may be different, and the bending end limiting method can quickly adjust the distance between the two ends by changing the bending position, thereby improving the adaptability of product adjustment.

[0045] The first functional part 15 is driven to reciprocate by the first screw rod 10; the second functional part 16 is driven to reciprocate by the second screw rod 11; the first screw rod 10 and the second screw rod 11 are respectively driven to rotate by the first motor 12A and the second motor 12B; with the rotation of the first screw rod 10 and the second screw rod 11, the first functional part 15 and the second functional part 16 can slide in parallel, and the moving stroke thereof is limited by the auxiliary switch fixed plate 91; the auxiliary switch module 9 comprises an auxiliary switch 93; the auxiliary switch 93 is provided with a pair on the stroke of the first functional part 15 or the second functional part 16, corresponding to two stroke limit positions respectively; when the first functional part 15 or the second functional part 16 moves to the stroke limit position of either end, the auxiliary switch 93 corresponds to disconnect the power supply circuit of the first motor 12A or the second motor 12B;

[0046] By corresponding the stroke limit position with the on-off of the motor device circuit driving the rotation of the screw rod, the damage of components caused by overstroke can be effectively avoided, and the operation safety of the mechanism is improved.

[0047] The auxiliary switch module 9 comprises an auxiliary switch pressing plate 92; the auxiliary switch pressing plate 92 is rotationally connected with the auxiliary switch fixed plate 91; the rotation path of the auxiliary switch pressing plate 92 corresponds to the triggering part of the auxiliary switch 93; when the first functional part 15 or the second functional part 16 moves to the stroke limit position of either end, the auxiliary switch pressing plate 92 is pressed to rotate and trigger the auxiliary switch 93.

[0048] The moving speed of the first functional part 15 is greater than or less than the moving speed of the second functional part 16, the time for the two functional parts to complete one adjustment stroke is different, and the difference in switching speed of the corresponding switches can play a reminding role, so that in special cases such as the surface characters of the switch being difficult to identify due to wear, it can be used as an auxiliary judgment basis.

[0049] As shown in Figures 1 to 5 A three-station operating mechanism for double-shaft double-motor operation of a high-voltage switch cabinet, comprising an input control mechanism and an output mechanism, which are connected together through a fixing part, wherein Figure 3 M1, M2, M4 and M5 in the output mechanism are notch positions, Figure 5 N1, N2, N4 and N5 in the input control mechanism are protruding positions, and the notch positions and the protruding positions are matched to realize power transmission;

[0050] The input control mechanism frame comprises a panel 4, a first partition plate 8, a left cover plate 3, a right cover plate 5, a motor mounting plate 6, and a middle partition plate 17. The motor mounting plate 6 comprises a first motor mounting plate 6A and a second motor mounting plate 6B. The middle partition plate 17 has a bent plate at each end, which is fixed to the panel 4 and the first partition plate 8 respectively. The first motor 12A and the second motor 12B are located between the panel 4 and the first partition plate 8 and are fixed by the first motor mounting plate 6A and the second motor mounting plate 6B and the first partition plate 8 through the first partition plate 8. The first lead screw 10 and the second lead screw 11 are located below the first motor 12A and the second motor 12B and are parallel to the middle partition plate. The first lead screw 10 and the second lead screw 11 have a first functional part 15 and a second functional part 16 respectively.

[0051] As shown in Figures 9 to 1 2. With the rotation of the first lead screw 10 and the second lead screw 11, the first functional part 15 and the second functional part 16 can move forward and backward in parallel, but the movement stroke is limited by the auxiliary switch fixed plate 91.

[0052] The interlocking plate 18 in the input control mechanism moves along the interlocking guide rod 19 during the movement of the first functional part 15 and the second functional part 16 due to the pushing of the cylindrical boss-shaped protruding part 15c or 16c. The interlocking plate 18 is used for interlocking with the corresponding circuit breaker.

[0053] Due to the pulling force of the interlocking spring 14, the first movable part 13A and the second movable part 13B have a tendency to pull and tighten. Only when the hook-shaped limiting part at 13a of the second movable part 13B removes the restriction of the cylindrical boss at 16c of the second functional part 16, the second functional part 16 can move, and thus the second lead screw 11 can rotate. Similarly, only when the hook-shaped limiting part at 13a of the first movable part 13A removes the restriction of the cylindrical boss-shaped protruding part at 15a of the first functional part 15, the first functional part 15 can move, and thus the first lead screw 10 can rotate.

[0054] When the first functional part 15 or the second functional part 16 approaches the auxiliary switch fixed plate 91 during the rotation of the first lead screw 10 or the second lead screw 11, the auxiliary switch 93 in the same group is switched due to the rotation of the auxiliary switch pressing plate 92.

[0055] As shown in Figures 13 to 15 The output mechanism comprises a bottom plate 1, a second partition plate 2, first motor input gears 20A and 20B arranged on the left and right, first and second clutch mechanisms 21A and 21B arranged on the left and right, and a mechanism output gear 22. The mechanism output gear 22 is engaged with the second clutch gear 212 in the first clutch mechanism 21A. The first clutch gear 211 in the first clutch mechanism 21A is engaged with the first motor input gear 25A. The first clutch gear 211 in the second clutch mechanism 21B is engaged with the second motor input gear 25B.

[0056] The first clutch gear 211 and the clutch shaft 215 are fixedly connected to each other coaxially, and the second clutch block 213 and the second clutch gear 212 are fixedly connected to each other coaxially. The first clutch block 210 can rotate around the clutch shaft 215 and Figure 14 For left and right sliding in the viewing direction, a clutch spring 216 is provided between the first clutch block 210 and the second clutch block 213;

[0057] The interlocking member 24 has bent edges on both sides, a vertical oblong hole at one end, and a boss at the other end that passes through the slot of the second partition 2. It can move up and down in the vertical direction. Under the pressure of the spring member 23, the two bent edges contact the root of the tooth of the mechanism output gear 22, thereby limiting its rotation to realize the interlocking function. This interlocking member 24 is used to interlock with the circuit breaker it is equipped with.

[0058] like Figures 6 to 8 The figure shows the detailed operating principle of the switch position switching of this application.

[0059] like Figure 7 As shown, the operating mechanism of the present invention is in an isolated state, the first functional part 15 is located on the bottom plate side of the first screw rod 10, and is stopped due to the limitation of the auxiliary switch fixing plate 91, the second functional part 16 is located on the bottom plate side of the second screw rod 11, and is stopped due to the limitation of the auxiliary switch fixing plate 91, the first movable part 13A and the second movable part 13B are supported by the cylindrical boss-shaped protrusions of the second functional part 16 and the first functional part 15, so that the first movable part 13A rotates upward and the second movable part 13B rotates downward, unlocking the limitation of the first movable part 13A on the first functional part 15, and unlocking the limitation of the first movable part 13B on the second functional part 16, and at the same time unlocking the limitation of the interlocking part 24 on the output gear 22 of the mechanism, and using the operating handle to rotate the first screw rod 10 or the first motor clockwise. When 12A is energized and rotates counterclockwise, the clutch shaft 215 in the first clutch mechanism 21A rotates synchronously, the first clutch gear 211 rotates synchronously, and through the first clutch block 210, the second clutch gear 212 rotates synchronously, the mechanism output gear 22 rotates synchronously, and the mechanism output sprocket 14 rotates synchronously, and the operating mechanism switches from the isolation position to the working position. During this switching process, the first functional component 15 gradually compresses the interlocking plate 18 until it contacts the auxiliary switch fixing plate 91 installed on the panel 4 and stops. At the same time, the auxiliary switch 93 in the auxiliary switch module 9C switches the circuit of the first motor 12A. The mechanism switching process is completed and the operating mechanism is in the working state. At this time, the second movable component 13B whose cylindrical boss-shaped protrusion of the second functional component 16 is rotated back into position is limited by the hook-shaped limiting portion, and the second screw rod 16 cannot rotate clockwise or counterclockwise;

[0060] like Figure 6As shown, the operating mechanism of the present application is in the working state, the first functional part 15 is located on the panel side of the first lead screw 10, and is stopped due to the limiting of the auxiliary switch fixing plate 91; the second functional part 16 is located on the bottom plate side of the second lead screw 11, and is stopped due to the limiting of the auxiliary switch fixing plate 91; the unlocking interlocking part 24 releases the restriction on the mechanism output gear 22; the first lead screw 10 is rotated counterclockwise by using the operating handle, or the first motor 12A is powered to rotate clockwise, the clutch shaft 215 in the first clutch mechanism 21A rotates synchronously, the first clutch gear 211 rotates synchronously, the second clutch gear 212 rotates synchronously through the first clutch block 210, the mechanism output gear 22 rotates synchronously, the mechanism output sprocket 14 rotates synchronously, the operating mechanism is switched from the working position to the isolation position, and in the switching process, the first functional part 15 gradually releases the compression interlocking plate 18 until it stops by contacting the auxiliary switch fixing plate 91 installed on the first partition plate 8, and at the same time, the auxiliary switch 93 in the auxiliary switch module 9A switches the loop of the first motor 12A, and the mechanism switching process is completed;

[0061] As Figure 7 , the operating mechanism of the present application is in the working state, the first functional part 15 is located on the panel side of the first lead screw 10, and is stopped due to the limiting of the auxiliary switch fixing plate 91; the second functional part 16 is located on the bottom plate side of the second lead screw 11, and is stopped due to the limiting of the auxiliary switch fixing plate 91; the first active part 13A and the second active part 13B are rotated upward and downward respectively due to the cylindrical boss-shaped protrusions of the second functional part 16 and the first functional part 15, which unlock the restriction of the first active part 13A on the first functional part 15 and the restriction of the first active part 13B on the second functional part 16, and at the same time, the unlocking interlocking part 24 releases the restriction on the mechanism output gear 22; the second lead screw 11 is rotated clockwise by using the operating handle, or the second motor 12B is powered to rotate counterclockwise, the clutch shaft 215 in the second clutch mechanism 21B rotates synchronously, the first clutch gear 211 rotates synchronously, the second clutch gear 212 rotates synchronously through the first clutch block 210, the mechanism output gear 22 rotates synchronously, the mechanism output sprocket 14 rotates synchronously, the operating mechanism is switched from the isolation position to the grounding position, and in the switching process, the second functional part 16 gradually compresses the interlocking plate 18 until it stops by contacting the auxiliary switch fixing plate 91 installed on the panel 4, and at the same time, the auxiliary switch 93 in the auxiliary switch module 9D switches the loop of the second motor 12B, and the mechanism switching process is completed, and the operating mechanism is in the grounding state, at this time, the cylindrical boss-shaped protrusions of the first functional part 15 are limited by the first active part 13A, and the first lead screw 10 cannot be rotated clockwise or counterclockwise;

[0062] As Figure 8The operating mechanism of the present application is in the grounded state, the second functional part 16 is located at the panel side of the second screw rod 11 and is stopped due to the limiting of the auxiliary switch fixing plate 91, the first functional part 15 is located at the bottom plate side of the first screw rod 10 and is stopped due to the limiting of the auxiliary switch fixing plate 91, the unlocking interlocking part 24 releases the restriction on the mechanism output gear 22, the second screw rod 11 is rotated counterclockwise by using the operating handle or the second motor 12B is powered to rotate clockwise, the clutch shaft 215 in the second clutch mechanism 21B rotates synchronously, the first clutch gear 211 rotates synchronously, the second clutch gear 212 rotates synchronously through the first clutch block 210, the mechanism output gear 22 rotates synchronously, the mechanism output sprocket 14 rotates synchronously, the operating mechanism is switched from the grounded position to the isolated position, in the switching process, the second functional part 16 gradually releases the compression interlocking plate 18 until it stops by contacting the auxiliary switch fixing plate 91 installed on the first partition plate 8, and at the same time, the auxiliary switch 93 in the auxiliary switch module 9B switches the loop of the second motor 12B, and the switching process of the mechanism is completed.

[0063] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered within the protection scope of the present application.

Claims

1. A three-position operating mechanism for a high-voltage switchgear, characterized in that: The invention comprises a first functional part (15), a second functional part (16) and a locking assembly; the locking assembly comprises a rotating movable part (13); a limiting part (13a) and a supporting part (13b) are respectively provided on both sides of the movable part (13); the paired movable parts (13) cooperate to form an opening and closing structure, and the limiting parts (13a) and the supporting parts (13b) on the two movable parts (13) are staggered and opposite to each other; the first functional part (15) and the second functional part (16) are respectively provided on the opposite sides of the locking assembly; the first functional part (15) and the second functional part (16) are respectively provided on the opposite sides of the locking assembly; the second functional part (16) and the second functional part (16) are respectively provided on the opposite sides of the locking assembly; the first functional part (15 ... A functional part (15) or a second functional part (16) cooperates with a limiting part (13a) during movement; the first functional part (15) or the second functional part (16) squeezes the supporting part (13b) during movement, driving the limiting part (13a) on the other side of the same movable part (13) to release the limit; when the first functional part (15) approaches the locking assembly, the high-voltage switch switches from the connected position to the disconnected position; when the second functional part (16) moves away from the locking assembly, the high-voltage switch switches from the disconnected position to the grounded position.

2. The three-position operating mechanism for a high-voltage switchgear according to claim 1, characterized in that: An elastic member (14) is connected between the paired movable members (13); the elastic member (14) drives the paired movable members (13) to close, and the limiting portion (13a) reaches a limiting position in the closed state; when the supporting portion (13b) is squeezed by the first functional member (15) or the second functional member (16), the corresponding movable member (13) overcomes the pulling force of the elastic member (14) and rotates to open.

3. The three-position operating mechanism for a high-voltage switchgear according to claim 1 or 2, characterized in that: A pair of protrusions are respectively provided on the first functional part (15) and the second functional part (16); the two protrusions respectively cooperate with the limiting part (13a) and the supporting part (13b) on the moving path.

4. The three-position operating mechanism for a high-voltage switchgear according to claim 1, characterized in that: An interlocking plate (18) is provided at one end of the travel of the first functional part (15) and the second functional part (16) away from the locking assembly, and an interlocking spring (20) is connected to the interlocking plate (18); the interlocking plate (18) is linked to the circuit breaker of the circuit; when the high-voltage switch is in the connected position, the first functional part (15) presses on the surface of the interlocking plate (18), and the circuit breaker remains in the connected state; when the first functional part (15) moves toward the locking assembly, the interlocking plate (18) drives the circuit breaker to disconnect the circuit under the push of the interlocking spring (20).

5. The three-position operating mechanism for a high-voltage switchgear according to claim 4, characterized in that: When the high-voltage switch is in the grounding position, the second functional part (16) presses and drives the interlocking plate (18), and the circuit breaker remains in the connected state; when the second functional part (16) moves toward the locking assembly, the interlocking plate (18) drives the circuit breaker to disconnect the circuit under the push of the interlocking spring (20).

6. The three-position operating mechanism for a high-voltage switchgear according to claim 1, characterized in that: Auxiliary switch modules (9) are respectively provided on the travel of the first functional part (15) and the second functional part (16); the auxiliary switch module (9) includes an auxiliary switch fixing plate (91); one end of the auxiliary switch fixing plate (91) is bent to form an abutting end, which blocks and limits the travel limit position of the first functional part (15) or the second functional part (16).

7. The three-position operating mechanism for a high-voltage switchgear according to claim 6, characterized in that: The first functional part (15) is driven to move back and forth by the first screw rod (10); the second functional part (16) is driven to move back and forth by the second screw rod (11); the first screw rod (10) and the second screw rod (11) are driven to rotate by the first motor (12A) and the second motor (12B) respectively; the auxiliary switch module (9) includes an auxiliary switch (93); a pair of the auxiliary switches (93) are provided on the travel of the first functional part (15) or the second functional part (16), corresponding to two travel limit positions respectively; when the first functional part (15) or the second functional part (16) moves to the travel limit position at either end, the auxiliary switch (93) correspondingly disconnects the power supply circuit of the first motor (12A) or the second motor (12B).

8. The three-position operating mechanism for a high-voltage switchgear according to claim 7, characterized in that: The auxiliary switch module (9) includes an auxiliary switch pressing plate (92); the auxiliary switch pressing plate (92) is rotatably connected to the auxiliary switch fixing plate (91); the rotation path of the auxiliary switch pressing plate (92) corresponds to the triggering position of the auxiliary switch (93); when the first functional part (15) or the second functional part (16) moves to the travel limit position at either end, the auxiliary switch pressing plate (92) is pressed to rotate and trigger the auxiliary switch (93).

9. The three-position operating mechanism for a high-voltage switchgear according to claim 1, characterized in that: The moving speed of the first functional part (15) is greater than or less than the moving speed of the second functional part (16).

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