A double-operation-axis three-position mechanism for an inflatable cabinet and its interlocking device

Abstract

The present invention discloses a double-operating-axis three-station mechanism of an inflatable cabinet and its interlocking device, which is characterized in that it comprises a support member, a guide plate, a screw and a limit rod one arranged between a second mounting plate and a third mounting plate, one end of the screw is connected to the axis of a first transmission gear, and the screw is matched with a slider; the first transmission gear is meshed with the second transmission gear, the axis of the second transmission gear is connected to the second mounting plate, and the operating handle is connected to the axis of the second transmission gear after passing through the first mounting plate; an interlocking plate is arranged on the outer side of the first mounting plate, and a hook for shifting a left leaf spring and a limit pin for shifting a right leaf spring during movement are arranged on the interlocking plate, and a hole matched with the interlocking rod is also arranged, and a movable handle shaft is fixed on the outer side of the interlocking plate. Compared with the prior art, the present invention adopts double-operating-axis operation, has good interlocking, linkage and anti-starting effects, has strong interlocking logic, and is convenient and reliable in locking, unlocking and switching operations of the operating mechanism.

Description

Technical Field

[0001] The present invention relates to a three-position mechanism for a high-voltage gas-insulated switchgear, and particularly to a double-operation-axis three-position mechanism and its interlocking device, belonging to the technical field of driving mechanisms. Background Art

[0002] The three-position mechanism is a mechanism used to drive the disconnector to achieve three positions: busbar, isolation, and grounding. It is widely used in high-voltage gas-insulated switchgear cabinets and cooperates with the circuit breaker to connect and disconnect the main circuit. During its operation, it mainly involves three positions: closing, opening, and grounding of the disconnector. That is, when the operating mechanism is in the closing position, the grounding operation cannot be performed; when it is in the grounding position, the closing operation cannot be performed; thus ensuring the safety of the disconnector operating mechanism and preventing safety accidents caused by incorrect operations.

[0003] The existing anti-interference and interlocking structure design of the isolation operation shaft and the grounding operation shaft of the three-position mechanism is not satisfactory and needs further improvement. Summary of the Invention

[0004] The technical problem to be solved by the present invention is the anti-interference and interlocking structure of the isolation operation shaft and the grounding operation shaft of the existing three-position mechanism.

[0005] In order to solve the above technical problems, the present invention provides an inflatable cabinet double-operating axis three-position mechanism and its interlocking device, characterized in that it comprises a support member, a guide plate, a screw and a pair of mutually parallel limit rods 1 arranged between the mounting plate 2 and the mounting plate 3, one end of the screw is connected with the axis center of the transmission gear 1, and the screw cooperates with a slider sleeved on the outside thereof; a guide block is fixed on one side of the slider, and the guide block moves in a pair of mutually parallel limit rods 1, and the slider is provided with a protrusion for limiting the limit block 1; the transmission gear 1 and the transmission gear 2 are meshed with each other, the axis center of the transmission gear 2 is connected with the mounting plate 2, and the operating handle is connected with the axis center of the transmission gear 2 after passing through the mounting plate 1; limit plates 1 and 2 are respectively provided on both sides of the end portion of the screw connected to the transmission gear 1, and the bottoms of the limit plates 1 and 2 are connected with the corresponding limit rod 1, and the limit plates 1 and 2 are respectively provided with The right leaf spring and the left leaf spring are provided with an interlocking plate on the outer side of the mounting plate one. The interlocking plate is provided with a bent hook for moving the left leaf spring and a limit pin for moving the right leaf spring during movement, and is also provided with a hole that cooperates with the interlocking rod. A moving handle shaft is fixed on the outer side of the interlocking plate; a limit block 1 is provided at each end of the lead screw; a reset torsion spring for resetting the limit plate 2 and the limit plate 1 is provided between the limit plate 2 and the limit plate 1; three connecting plates are provided on the support member, and a protruding structure is provided on the connecting plate. The connecting plate is connected with the interlocking rod, and one end of the interlocking rod is sleeved with a reset compression spring for resetting the connecting plate; the guide plate is spliced ​​by plate 1 and plate 2, and a hexagonal hole is provided at the joint of the two. The hexagonal hole cooperates with the hexagonal part of the end of the guide block. When the end of the guide block is fully matched with the hexagonal hole, the edges of plate 1 and plate 2 fit each other. When the end of the guide block is not fully matched with the hexagonal hole, plate 1 and plate 2 are in a separated state.

[0006] Preferably, a second limiting block is fixed on the first limiting rod.

[0007] Preferably, the screw rod is engaged with the slider via a thread.

[0008] Preferably, a limiting rod 2 is provided on the other side of the limiting plate 1 relative to the screw rod.

[0009] Preferably, the mounting plate 1 is provided with hole 1, hole 2 and multiple holes for inserting the movable handle shaft; the mounting plate 1 is provided with a panel on the outer side, and the panel is provided with hole A, hole B and a strip hole, the operating handle is inserted into hole A and hole 1 at the same time or into hole B and hole 2 at the same time, and the movable handle shaft passes through the strip hole and is inserted into the hole on the mounting plate 1.

[0010] Preferably, when the disconnector is in the isolated position, under the action of an external force, the moving handle shaft drives the interlocking plate to move along the first mounting plate; when the interlocking plate moves to the isolation-grounding operation hole, the hook on the interlocking plate touches the left leaf spring, causing it to drive the second limiting plate to rotate. At this time, the operating handle can only rotate in the direction in which the slider moves towards the grounding position side. When the slider moves in the opposite direction, the first limiting block on the lead screw is limited at the second limiting plate;

[0011] When the three-position switch is in the grounding position, the slider moves to the connecting plate and contacts its convex structure. Driven by the slider, the connecting plate drives the interlocking rod to move towards the operation panel until it is inserted into the hole on the interlocking plate that mates with the interlocking rod;

[0012] When the disconnector returns to the isolated position, under the action of an external force, the moving handle shaft drives the interlocking plate to move along the first mounting plate; when the interlocking plate moves to the isolation-closing operation hole, the limiting pin on the interlocking plate contacts the right leaf spring, causing it to bend and drive the first limiting plate to rotate. At this time, the operating handle can only rotate towards the closing position. When the operating handle rotates in the opposite direction, the first limiting block on the lead screw is limited at the first limiting plate; when the closing position is reached, the slider moves to the corresponding position, and at this time, the first limiting block on the lead screw is limited at the corresponding convex block on the slider;

[0013] When the three-position switch is in the closing position, the slider moves to the connecting plate and contacts it. The connecting plate drives the interlocking rod to move towards the panel until it is inserted into the hole on the interlocking plate that mates with the interlocking rod.

[0014] Compared with the prior art, the present invention adopts a double operating shaft operation, with good interlocking, linkage, and anti-starting effects, strong interlocking logic, and convenient and reliable locking, unlocking, and conversion operations of the operating mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front view of the double operating shaft three-position mechanism and its interlocking device for the gas-insulated switchgear provided by the present invention;

[0016] Figure 2 is Figure 1 the top view of

[0017] Figure 3 , 4 are respectively the three-dimensional views of different angles of the double operating shaft three-position mechanism and its interlocking device for the gas-insulated switchgear provided by the present invention;

[0018] Figure 5 is the schematic diagram of the guide plate;

[0019] Figure 6 is the schematic diagram of the fixing plate;

[0020] Figure 7 is the schematic diagram of the mounting plate;

[0021] Figure 8 Schematic diagram of the panel;

[0022] Figure 9 Schematic diagram of the connection between the joint plate and the interlocking rod;

[0023] Figure 10 Schematic diagram of the slider;

[0024] Figure 11 Schematic diagram of the state when the disconnector is in the isolated position;

[0025] Figure 12 Schematic diagram of the state when the three-position switch is in the grounded position;

[0026] Figure 13 Schematic diagram of the state when the three-position switch is in the closed position. Detailed implementation manners

[0027] To make the present invention more obvious and understandable, preferred embodiments are hereby described in detail in conjunction with the accompanying drawings as follows.

[0028] Embodiment

[0029] Such as Figure 1-10As shown, a dual-operation-axis three-position mechanism of an inflatable cabinet and its interlocking device provided in this embodiment include a support member 8, a guide plate, a screw rod 11 and a pair of mutually parallel limit rods 9 arranged between the second mounting plate 4 and the third mounting plate 5. One end of the screw rod 11 is connected to the axis of the transmission gear 6, and the screw rod 11 cooperates with a slider 12 sleeved on the outside thereof; a guide block 24 is fixed to one side of the slider 12, and the guide block 24 moves in a pair of mutually parallel limit rods 9. The slider 12 is provided with a limit block 11 for limiting the position. The projection 121 of 13; the transmission gear 16 and the transmission gear 27 are meshed with each other, the axis of the transmission gear 27 is connected to the mounting plate 24, and the operating handle 1 is connected to the axis of the transmission gear 27 after passing through the mounting plate 13; the two sides of the end of the screw rod 11 connected to the transmission gear 16 are respectively provided with a limit plate 17 and a limit plate 2 18, and the bottoms of the limit plates 17 and the limit plates 2 18 are connected to the corresponding limit rod 19, and the limit plates 17 and the limit plates 2 18 are respectively provided with a right leaf spring 16 and a left leaf spring 15, and the installation An interlocking plate 26 is provided on the outer side of the plate 13, and a hook for moving the left leaf spring 15 and a limit pin 14 for moving the right leaf spring 16 are provided on the interlocking plate 26 during the movement, and a hole matching the interlocking rod 20 is also provided. A movable handle shaft 2 is fixed on the outer side of the interlocking plate 26; a limit block 13 is provided at each end of the lead screw 11; a reset torsion spring 19 for resetting the limit plate 2 18 and the limit plate 1 17 is provided between the limit plate 2 18 and the limit plate 1 17; three connecting plates 22 are provided on the support member 8, and the connecting plates 22 are provided with a plurality of connecting plates 22. A protruding structure is provided, the connecting plate 22 is connected to the interlocking rod 20, and one end of the interlocking rod 20 is sleeved with a reset compression spring 21 for resetting the connecting plate 22; the guide plate is spliced ​​by plate 1 28 and plate 29, and a hexagonal hole is provided at the joint of the two, and the hexagonal hole matches the hexagonal part of the end of the guide block 24. When the end of the guide block 24 is fully matched with the hexagonal hole, the edges of plate 1 28 and plate 2 29 fit each other, and when the end of the guide block 24 is not fully matched with the hexagonal hole, plate 1 28 and plate 2 29 are in a separated state.

[0030] The limiting block 25 is fixed on the limiting rod 1 9 , and the limiting block 25 is inserted into the hollow on the guide plate, so that the limiting rod 1 9 is not affected when the plate 1 28 and the plate 2 29 of the guide plate move.

[0031] The screw rod 11 is meshed with the slider 12 via threads.

[0032] A second limiting rod 23 is disposed on the other side of the limiting plate 17 relative to the screw rod 11 .

[0033] The first mounting plate 3 is provided with a first hole 31, a second hole 32 and three holes for inserting the moving handle shaft 2; a panel 27 is arranged outside the first mounting plate 3, and the panel 27 is provided with a hole A271, a hole B272 and a strip hole 273. The operating handle 1 is inserted into the hole A271 and the first hole 31 at the same time or inserted into the hole B272 and the second hole 32 at the same time, and the moving handle shaft 2 passes through the strip hole 273 and is inserted into the holes on the first mounting plate 3.

[0034] When the disconnector is in the isolation position (as Figure 11 shown), under the action of an external force, the moving handle shaft 2 drives the interlocking plate 26 to move along the first mounting plate 3; when the interlocking plate 26 moves to the isolation-earthing operation hole, the hook on the interlocking plate 26 touches the left leaf spring 15, causing it to drive the second limiting plate 18 to rotate. At this time, the operating handle 1 can only rotate in the direction in which the slider 12 moves towards the earthing position side. When the slider 12 moves in the opposite direction, the first limiting block 13 is limited at the second limiting plate 18;

[0035] When the three-position switch is in the earthing position (as Figure 12 shown), the slider 12 moves to the connecting plate 22 and contacts its convex structure. The connecting plate 22 is driven by the slider 12 to drive the interlocking rod 20 to move towards the operation panel until it is inserted into the hole on the interlocking plate 26 that matches the interlocking rod 20;

[0036] When the disconnector returns to the isolation position (as Figure 11 shown), under the action of an external force, the moving handle shaft 2 drives the interlocking plate 26 to move along the first mounting plate 3; when the interlocking plate 26 moves to the isolation-closing operation hole, the limiting pin 14 on the interlocking plate 26 contacts the right leaf spring 16, causing it to bend and drive the first limiting plate 17 to rotate. At this time, the operating handle 1 can only rotate towards the closing position. When the operating handle 1 rotates in the opposite direction, the first limiting block 13 on the lead screw 11 is limited at the first limiting plate 17; when the closing position is reached, the slider 12 moves to the corresponding position, and at this time, the first limiting block 13 on the lead screw 11 is limited at the corresponding convex block 121 on the slider 12;

[0037] When the three-position switch is in the closing position (as Figure 13 shown), the slider 12 moves to the connecting plate 22 and contacts it. The connecting plate 22 drives the interlocking rod 20 to move towards the panel 27 until it is inserted into the hole on the interlocking plate 26 that matches the interlocking rod 20.

Claims

1. A double-operating-axis three-position mechanism for an inflatable cabinet and its interlocking device, It is characterized in that The invention comprises a support member (8) arranged between a second mounting plate (4) and a third mounting plate (5), a guide plate, a screw rod (11) and a pair of mutually parallel limit rods (9), one end of the screw rod (11) is connected to the axis of a transmission gear (6), and the screw rod (11) cooperates with a slider (12) sleeved on the outside thereof; a guide block (24) is fixed on one side of the slider (12), and the guide block (24) moves within the pair of mutually parallel limit rods (9); a protrusion (121) for limiting the limit block (13) is provided on the slider (12); the transmission gear (6) and the transmission gear (7) are connected to each other. The two drive gears (7) are meshed with each other, the axis of the transmission gear (7) is connected to the mounting plate (4), and the operating handle (1) is connected to the axis of the transmission gear (7) after passing through the mounting plate (3); the two sides of the end of the screw rod (11) connected to the transmission gear (6) are respectively provided with a limit plate (17) and a limit plate (18), the bottoms of the limit plate (17) and the limit plate (18) are connected to the corresponding limit rod (9), the limit plate (17) and the limit plate (18) are respectively provided with a right leaf spring (16) and a left leaf spring (15), and the outer side of the mounting plate (3) is provided with an interlocking plate (26) ), the interlocking plate (26) is provided with a hook for moving the left leaf spring (15) and a stop pin (14) for moving the right leaf spring (16) during the movement, and is also provided with a hole that matches the interlocking rod (20), and a movable handle shaft (2) is fixed to the outer side of the interlocking plate (26); a stop block (13) is provided at each end of the screw rod (11); a reset torsion spring (19) for resetting the stop plate (18) and the stop plate (17) is provided between the stop plate (2) and the stop plate (17); three connecting plates (22) are provided on the support member (8), and a convex The structure comprises a connecting plate (22) connected to an interlocking rod (20), and one end of the interlocking rod (20) is sleeved with a reset compression spring (21) for resetting the connecting plate (22); the guide plate is formed by splicing a plate 1 (28) and a plate 2 (29), and a hexagonal hole is provided at the splicing position of the two plates, and the hexagonal hole matches with the hexagonal part of the end of the guide block (24). When the end of the guide block (24) is fully matched with the hexagonal hole, the edges of the plate 1 (28) and the plate 2 (29) are in contact with each other. When the end of the guide block (24) is not fully matched with the hexagonal hole, the plate 1 (28) and the plate 2 (29) are in a separated state. When the isolating switch is in the isolating position, the movable handle shaft (2) drives the interlocking plate (26) to move along the mounting plate (3) under the action of an external force; when the interlocking plate (26) moves to the isolation-grounding operation hole, the bent hook on the interlocking plate (26) hits the left leaf spring (15), causing it to drive the limit plate (18) to rotate. At this time, the operating handle (1) can only rotate in the direction of the slider (12) moving toward the grounding position. When the slider (12) moves in the opposite direction, the limit block (13) is limited at the limit plate (18); When the three-position is in the grounded position, the slider (12) moves to the connecting plate (22) and contacts its convex structure. Driven by the slider (12), the connecting plate (22) drives the interlocking rod (20) to move towards the operation panel until it is inserted into the hole on the interlocking plate (26) that matches the interlocking rod (20). When the disconnector returns to the isolated position, under the action of an external force, the moving handle shaft (2) drives the interlocking plate (26) to move along the first mounting plate (3). When the interlocking plate (26) moves to the isolation-switch closing operation hole, the limit pin (14) on the interlocking plate (26) contacts the right leaf spring (16), causing it to bend and drive the first limit plate (17) to rotate. At this time, the operating handle (1) can only rotate towards the closing position. When the operating handle (1) rotates in the reverse direction, the first limit block (13) on the lead screw (11) is limited at the first limit plate (17). When the closing position is reached, the slider (12) moves to the corresponding position. At this time, the first limit block (13) on the lead screw (11) is limited at the corresponding convex block (121) on the slider (12). When the three-position is in the closing position, the slider (12) moves to the connecting plate (22) and contacts it. The connecting plate (22) drives the interlocking rod (20) to move towards the panel (27) until it is inserted into the hole on the interlocking plate (26) that matches the interlocking rod (20).

2. The double-operation-shaft three-position mechanism of the gas-insulated switchgear and its interlocking device as claimed in claim 1, characterized in that, a second limit block (25) is fixed on the first limit rod (9).

3. The double-operation-shaft three-position mechanism of the gas-insulated switchgear and its interlocking device as claimed in claim 1, characterized in that, the lead screw (11) and the slider (12) are in threaded engagement.

4. The double-operation-shaft three-position mechanism of the gas-insulated switchgear and its interlocking device as claimed in claim 1, characterized in that, a second limit rod (23) is provided on the other side of the first limit plate (17) relative to the lead screw (11).

5. The double-operation-shaft three-position mechanism of the gas-insulated switchgear and its interlocking device as claimed in claim 1, characterized in that, the first mounting plate (3) is provided with a first hole (31), a second hole (32) and a plurality of holes for inserting the moving handle shaft (2); a panel (27) is provided outside the first mounting plate (3). The panel (27) is provided with a hole A (271), a hole B (272) and a slot (273). The operating handle (1) is simultaneously inserted into the hole A (271) and the first hole (31) or simultaneously inserted into the hole B (272) and the second hole (32). The moving handle shaft (2) passes through the slot (273) and is inserted into the hole on the first mounting plate (3).

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