Three-station anti-misoperation interlocking device

Abstract

The invention discloses a three-station anti-misoperation interlocking device, which relates to the technical field of gas insulated switchgears, and comprises a frame body, a linkage plate, an isolation interlocking rod, a grounding interlocking rod, an isolation interlocking assembly, a grounding interlocking assembly and a three-station screw rod, the linkage plate is arranged on the side wall of one side of the frame body in a sliding mode in the horizontal direction, and an isolation long groove and a grounding long groove are formed in the linkage plate; the isolation interlocking rod and the grounding interlocking rod horizontally penetrate through the frame body and can move in the horizontal direction of the frame body, the isolation interlocking assembly is accurately matched with the isolation interlocking rod, and the grounding interlocking assembly is accurately matched with the grounding interlocking rod, so that independent locking of an isolation state and a grounding state of the device is achieved, switching of the two states is free of interference, and the safety of the device is improved. The problem of misoperation of a traditional operating mechanism is fundamentally solved, equipment faults and personal safety accidents caused by misoperation are effectively avoided, property loss caused by the accidents is reduced, and the development requirement for high safety of the gas insulated switchgear is met.

Description

TECHNICAL FIELD

[0001] The present application relates to a three-position anti-misoperation interlocking device, belonging to the technical field of gas-filled cabinets. BACKGROUND

[0002] In recent years, with the continuous development of switch technology, switch devices gradually develop towards miniaturization, maintenance-free and environmental protection. Many companies at home and abroad also vigorously develop medium-voltage gas-filled cabinets, that is, C-GIS, which is called gas-insulated switch cabinet. However, the three-position isolation operating mechanism is indispensable in the gas-filled cabinet. The design of the three-position mechanism is derived from the demand for the safety of high-voltage switch cabinet and substation equipment operation. The traditional operating mechanism has the risk of misoperation, which can easily cause equipment failure or personal safety accidents, and is difficult to adapt to the current high safety development demand of gas-filled cabinets. SUMMARY

[0003] In view of the above technical problems, the purpose of the present application is to provide a three-position anti-misoperation interlocking device.

[0004] The technical solution of the present application is realized as follows: a three-position anti-misoperation interlocking device, comprising a frame body, a linkage plate, an isolation interlocking rod, a grounding interlocking rod, an isolation interlocking assembly, a grounding interlocking assembly and a three-position lead screw; the linkage plate is slidingly arranged on one side wall of the frame body in the horizontal direction, and the isolation long groove and the grounding long groove are arranged on the linkage plate; the isolation interlocking rod and the grounding interlocking rod both horizontally penetrate the frame body and can move in the horizontal direction of the frame body, the isolation interlocking rod is used for cooperating with the isolation long groove on the linkage plate, and the grounding interlocking rod is used for cooperating with the grounding long groove on the linkage plate; the isolation interlocking assembly and the grounding interlocking assembly are both arranged in the frame body and correspond to the positions of the isolation interlocking rod and the grounding interlocking rod respectively, the isolation interlocking rod is hinged to the bottom of the isolation interlocking assembly, and the grounding interlocking rod is hinged to the side of the grounding interlocking assembly; the three-position lead screw is rotationally arranged in the frame body in the horizontal direction, a sliding block is threadedly connected to the three-position lead screw, and the sliding block moves on the three-position lead screw.

[0005] When the sliding block moves to the isolation half-way, the sliding block presses the isolation interlocking assembly, the one end of the isolation interlocking rod close to the linkage plate extends into the isolation long groove, the grounding interlocking rod remains stationary, and the linkage plate is locked in the isolation state; when the sliding block moves to the grounding half-way, the sliding block presses the grounding interlocking assembly, the grounding interlocking rod extends into the grounding long groove, the isolation interlocking rod remains stationary, and the linkage plate is locked in the grounding state.

[0006] Preferably, a U-shaped notch is formed in the side of the sliding block, a bearing shaft is horizontally arranged in the interior of the frame body, and the bearing shaft is embedded in the U-shaped notch of the sliding block.

[0007] Preferably, the isolation interlocking assembly comprises a first fixed plate, a first interlocking piece, a second interlocking piece, a third interlocking piece and a first connecting plate, the first fixed plate is fixedly connected to the frame body, the upper sides of the first, second and third interlocking pieces are hingedly connected to the first fixed plate at equal intervals, the lower sides of the first, second and third interlocking pieces are hingedly connected to the isolation interlocking rod, the two ends of the first connecting plate are hingedly connected to the first and second interlocking pieces, and the bottom of the sliding block abuts against the top of the first connecting plate.

[0008] Preferably, the grounding interlocking assembly comprises a second fixed plate, a fourth interlocking piece, a fifth interlocking piece, a sixth interlocking piece and a second connecting plate, the second fixed plate is fixedly connected to the frame body, one side of the fourth, fifth and sixth interlocking pieces is hingedly connected to the second fixed plate at equal intervals, the other side of the fourth, fifth and sixth interlocking pieces is hingedly connected to the grounding interlocking rod, the two ends of the second connecting plate are hingedly connected to the fifth and sixth interlocking pieces, and the top of the sliding block abuts against one side of the second connecting plate.

[0009] Preferably, one end of the three-position screw rod extends out of the frame body, the extending end of the three-position screw rod is fixedly provided with a first gear, one end of the bearing shaft extends out of the frame body, and the extending end of the bearing shaft is fixedly provided with a second gear, and the first gear and the second gear are meshed with each other.

[0010] Preferably, a plurality of horizontal sliding grooves are arranged on the side wall of the frame body, a sliding rod is arranged in the sliding grooves, and the two ends of the sliding rod are connected to the frame body and the linkage plate respectively.

[0011] Thanks to the use of the above technical scheme, the present application has the following advantages compared with the prior art:

[0012] The three-position misoperation prevention interlocking device of the present application realizes independent locking of the isolation state and the grounding state of the device through the precise cooperation of the isolation interlocking assembly and the isolation interlocking rod and the grounding interlocking assembly and the grounding interlocking rod. Only when the sliding block moves and drives the corresponding interlocking rod to extend into the long groove, the linkage plate will be locked, and the switching between the two states does not interfere, which fundamentally eliminates the misoperation problem of the traditional operation mechanism, effectively avoids equipment failures and personal safety accidents caused by misoperation, reduces property losses caused by accidents, and meets the development needs of high safety of the gas-filled cabinet. BRIEF DESCRIPTION OF DRAWINGS

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0014] Appendix Figure 1 This is a schematic diagram of the structure of a three-station anti-misoperation interlocking device according to the present invention;

[0015] Appendix Figure 2 This is a schematic diagram of the structure of a three-station anti-misoperation interlocking device according to the present invention, which removes the linkage plate;

[0016] Appendix Figure 3 This is a schematic diagram of the structure of the first slider, second slider, and third slider of the present invention in conjunction with the isolation interlocking component and the grounding interlocking component;

[0017] Appendix Figure 4 For the appendix Figure 3 A diagram from another perspective;

[0018] Appendix Figure 5 This is a schematic diagram of the slider described in this invention.

[0019] In the diagram: 1. Frame; 11. Bearing shaft; 111. Second gear; 12. Slide groove; 13. Slide rod; 2. Linkage plate; 21. Isolation slot; 22. Grounding slot; 3. Isolation interlocking rod; 4. Grounding interlocking rod; 5. Isolation interlocking assembly; 51. First fixing plate; 52. First interlocking piece; 53. Second interlocking piece; 54. Third interlocking piece; 55. Third interlocking piece; 6. Grounding interlocking assembly; 61. Second fixing plate; 62. Fourth interlocking piece; 63. Fifth interlocking piece; 64. Sixth interlocking piece; 65. Second connecting plate; 7. Three-position lead screw; 71. Slider; 711. U-shaped groove; 74. First gear. Detailed Implementation

[0020] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "straight," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0023] As attached Figures 1-4 As shown, the three-position anti-misoperation interlocking device of the present invention is applied in a gas-filled cabinet, and includes a frame 1, a linkage plate 2, an isolation interlocking rod 3, a grounding interlocking rod 4, an isolation interlocking component 5, a grounding interlocking component 6, and a three-position lead screw 7.

[0024] The linkage plate 2 is slidably mounted on one side wall of the frame 1 in the horizontal direction. In this embodiment, the side wall of the frame 1 is provided with multiple horizontal sliding grooves 12. A sliding rod 13 passes through the sliding groove 12. The two ends of the sliding rod 13 are connected to the frame 1 and the linkage plate 2 respectively. The linkage plate 2 and the frame 1 slide in cooperation through the sliding rod 13 and the sliding groove 12. The cooperation of multiple sliding grooves 12 and sliding rods 13 can avoid the problem of displacement and jamming during the sliding of the linkage plate 2.

[0025] The linkage plate 2 is provided with an isolation long slot 21 and a grounding long slot 22. The positions of the isolation long slot 21 and the grounding long slot 22 correspond to the positions of the isolation interlocking rod 3 and the grounding interlocking rod 4, respectively. The isolation interlocking rod 3 and the grounding interlocking rod 4 both pass horizontally through the frame 1 and can move along the horizontal direction of the frame 1. The isolation interlocking rod 3 is used to cooperate with the isolation long slot 21 on the linkage plate 2, and the grounding interlocking rod 4 is used to cooperate with the grounding long slot 22 on the linkage plate 2. Specifically, the isolation interlocking rod 3 is used to lock in the isolation long slot 21 to lock the linkage plate 2 in the isolation state, and the grounding interlocking rod 4 is used to lock in the grounding long slot 22 to lock the linkage plate 2 in the grounding state.

[0026] As attached Figures 3-5As shown, the three-position lead screw 7 is rotatably mounted in the frame 1 in the horizontal direction. The two ends of the three-position lead screw 7 are rotatably connected to the frame 1 through bearings. The three-position lead screw 7 is connected to the drive device in the three-position mechanism to drive the three-position lead screw 7.

[0027] A slider 71 is threaded onto the three-position lead screw 7. The slider 71 moves on the three-position lead screw. A U-shaped slot 711 is provided on the side of the slider 71. A bearing shaft 11 is horizontally arranged inside the frame 1. The end of the bearing shaft 11 is rotatably engaged with the frame 1 through a bearing. The bearing shaft 11 is fitted into the U-shaped slot 711 of the slider 71. The bearing shaft 11 can provide secondary guidance for the movement direction of the slider 71, further improving the straightness of the slider 71's movement.

[0028] It should be noted that there is a gap between the U-shaped groove 711 of the slider 71 and the bearing shaft 11 to ensure that the bearing shaft 11 can rotate within the U-shaped groove 711.

[0029] Furthermore, one end of the three-position lead screw 7 extends out of the outer side of the frame 1, and a first gear 74 is fixedly installed on the extended end of the three-position lead screw 7. One end of the bearing shaft 11 extends out of the outer side of the frame 1, and a second gear 111 is fixedly installed on the extended end of the bearing shaft 11. The first gear 74 and the second gear 111 mesh with each other, so that the three-position lead screw 7 and the bearing shaft 11 rotate synchronously, avoiding deviation or jamming during the movement of the slider.

[0030] The isolation interlocking component 5 and the grounding interlocking component 6 are both installed inside the frame 1 and correspond to the positions of the isolation interlocking rod 3 and the grounding interlocking rod 4, respectively. The isolation interlocking rod 3 is hinged to the bottom of the isolation interlocking component 5, and the grounding interlocking rod 4 is hinged to the side of the grounding interlocking component 6. The bottom of the slider 71 abuts against the isolation interlocking component 5, and the top of the slider 71 abuts against the grounding interlocking component 6. During operation, when the slider 71 moves to the isolation halfway point, the slider 71 presses against the isolation interlocking component 5, causing the end of the isolation interlocking rod 3 near the linkage plate 2 to extend into the isolation long groove 21, while the grounding interlocking rod 4 remains stationary, locking the linkage plate 2 in the isolation state. When the slider 71 moves to the grounding halfway point, the slider 71 presses against the grounding interlocking component 6, causing the grounding interlocking rod 4 to extend into the grounding long groove 22, while the isolation interlocking rod 3 remains stationary, locking the linkage plate 2 in the grounding state.

[0031] In this embodiment, the length center of the three-position lead screw 7 is defined as the reference point, with the side of the center closer to the linkage plate being the isolation half-stroke and the side farther from the linkage plate being the grounding half-stroke.

[0032] For details, see attached. Figure 3As shown, the isolation interlock assembly 5 includes a first fixed plate 51, a first interlock piece 52, a second interlock piece 53, a third interlock piece 5554, and a first connecting plate. The first fixed plate 51 is fixed to the frame 1 by bolts or welding. The upper sides of the first interlock piece 52, the second interlock piece 53, and the third interlock piece 5554 are hinged to the first fixed plate 51 at equal intervals by pins. The lower sides of the first interlock piece 52, the second interlock piece 53, and the third interlock piece 5554 are all hinged to the isolation interlock rod 3 at an incline towards the grounding halfway point by pins. The two ends of the first connecting plate are respectively hinged to the first interlock piece 52 and the second interlock piece 53. One end of the first connecting plate is hinged to the first fixed plate 51 with the first interlock piece 52 by the same pin, and the other end is hinged to the first fixed plate 51 with the second interlock piece 53 by the same pin. The bottom of the slider 71 abuts against the top of the first connecting plate.

[0033] As attached Figure 4 As shown, the grounding interlock assembly 6 includes a second fixing plate 61, a fourth interlocking piece 62, a fifth interlocking piece 63, a sixth interlocking piece 64, and a second connecting plate 65. The second fixing plate 61 is connected and fixed to the frame 1 by bolts or welding. One side of the fourth interlocking piece 62, the fifth interlocking piece 63, and the sixth interlocking piece 64 are hinged to the second fixing plate 61 at equal intervals by pins. The other side of the fourth interlocking piece 62, the fifth interlocking piece 63, and the sixth interlocking piece 64 are all hinged to the grounding interlocking rod 4 by pins. The two ends of the second connecting plate 65 are respectively hinged to the fifth interlocking piece 63 and the sixth interlocking piece 64. One end of the second connecting plate 65 is hinged to the fifth interlocking piece 63 on the second fixing plate 61 by the same pin, and the other end is hinged to the sixth interlocking piece 64 on the second fixing plate 61 by the same pin. The top of the slider 71 abuts against one side of the second connecting plate 65.

[0034] During operation, when the three-position lead screw 7 rotates and drives the slider 71 to move towards the isolation halfway point, the bottom of the slider 71 abuts against and presses the top of the first connecting plate. Since the two ends of the first connecting plate are hinged to the first interlocking piece 52 and the second interlocking piece 53, the first connecting plate will be pressed and will drive the first interlocking piece 52 and the second interlocking piece 53 to rotate around the hinge point with the first fixed plate 51. Then, through the hinged cooperation of the three interlocking pieces with the isolation interlocking rod 3, the isolation interlocking rod 3 is driven to move horizontally towards the linkage plate 2. Finally, the end of the isolation interlocking rod 3 near the linkage plate 2 extends into the isolation long groove 21 on the linkage plate 2. At this time, the grounding interlocking rod 4 remains stationary because it is not driven. The linkage plate 2 is locked by the isolation interlocking rod 3 and cannot slide horizontally, so that the device is locked in the isolation state.

[0035] When the three-position lead screw 7 rotates in the reverse direction, the drive slider 71 moves towards the grounding halfway point. The top of the slider 71 abuts against and presses the second connecting plate 65 on the side near the isolation halfway point. After being pressed, the second connecting plate 65 drives the fifth interlocking piece 63 and the sixth interlocking piece 64 to rotate around the hinge point between them and the second fixed plate 61. Through the hinged engagement of the three interlocking pieces with the grounding interlocking rod 4, the grounding interlocking rod 4 is driven to move horizontally towards the linkage plate 2. Finally, the grounding interlocking rod 4 extends into the grounding long groove 22 on the linkage plate 2. At this time, the isolation interlocking rod 3 remains stationary due to the loss of driving force. The linkage plate 2 is locked by the grounding interlocking rod 4 and cannot slide, thus locking the device in the grounding state.

[0036] In summary, this application achieves independent locking of the device's isolation and grounding states by precisely coordinating the isolation interlock component 5 with the isolation interlock rod 3, and the grounding interlock component 6 with the grounding interlock rod 4. The linkage plate 2 is only locked when the slider moves and drives the corresponding interlock rod into the long slot, and the switching between the two states is interference-free. This fundamentally eliminates the problem of misoperation in traditional operating mechanisms, effectively avoids equipment failures and personal safety accidents caused by misoperation, and reduces property losses caused by accidents, thereby meeting the high safety development requirements of gas-filled cabinets.

[0037] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A three-station anti-misoperation interlocking device, characterized in that: The system includes a frame (1), a linkage plate (2), an isolation interlocking rod (3), a grounding interlocking rod (4), an isolation interlocking assembly (5), a grounding interlocking assembly (6), and a three-position lead screw (7). The linkage plate (2) is slidably mounted on one side wall of the frame (1) in the horizontal direction. The linkage plate (2) is provided with an isolation long slot (21) and a grounding long slot (22). The isolation interlocking rod (3) and the grounding interlocking rod (4) both penetrate the frame (1) horizontally and can move in the horizontal direction of the frame (1). The isolation interlocking rod (3) is used to cooperate with the isolation long slot (21) on the linkage plate (2), and the grounding interlocking rod... (4) Used to cooperate with the grounding slot (22) on the linkage plate (2); the isolation interlock assembly (5) and the grounding interlock assembly (6) are both set in the frame (1) and correspond to the positions of the isolation interlock rod (3) and the grounding interlock rod (4) respectively. The isolation interlock rod (3) is hinged to the bottom of the isolation interlock assembly (5) and the grounding interlock rod (4) is hinged to the side of the grounding interlock assembly (6); the three-position screw (7) is rotatably set in the frame (1) in the horizontal direction. The three-position screw (7) is threaded with a slider (71) and the slider (71) moves on the three-position screw (7); When the slider (71) moves to the isolation halfway point, the slider (71) presses against the isolation interlock assembly (5), causing the isolation interlock rod (3) to extend into the isolation long groove (21) near the linkage plate (2), while the grounding interlock rod (4) remains stationary, locking the linkage plate (2) in the isolation state; when the slider (71) moves to the grounding halfway point, the slider (71) presses against the grounding interlock assembly (6), causing the grounding interlock rod (4) to extend into the grounding long groove (22), while the isolation interlock rod (3) remains stationary, locking the linkage plate (2) in the grounding state.

2. The three-station anti-misoperation interlocking device according to claim 1, characterized in that: The slider (71) has a U-shaped slot (711) on its side, and a bearing shaft (11) is horizontally arranged inside the frame (1). The bearing shaft (11) is fitted into the U-shaped slot (711) of the slider (71).

3. The three-station anti-misoperation interlocking device according to claim 1, characterized in that: The isolation interlocking assembly (5) includes a first fixing plate (51), a first interlocking piece (52), a second interlocking piece (53), a third interlocking piece (55)(54), and a first connecting plate. The first fixing plate (51) is fixed to the frame (1). The upper sides of the first interlocking piece (52), the second interlocking piece (53), and the third interlocking piece (55)(54) are hinged to the first fixing plate (51) at equal intervals. The lower sides of the first interlocking piece (52), the second interlocking piece (53), and the third interlocking piece (55)(54) are all hinged to the isolation interlocking rod (3) with an inclination towards the grounding half. The two ends of the first connecting plate are respectively hinged to the first interlocking piece (52) and the second interlocking piece (53). The bottom of the slider (71) abuts against the top of the first connecting plate.

4. The three-station anti-misoperation interlocking device according to claim 1, characterized in that: The grounding interlock assembly (6) includes a second fixing plate (61), a fourth interlock piece (62), a fifth interlock piece (63), a sixth interlock piece (64), and a second connecting plate (65). The second fixing plate (61) is fixed to the frame (1). One side of the fourth interlock piece (62), the fifth interlock piece (63), and the sixth interlock piece (64) are hinged to the second fixing plate (61) at equal intervals. The other side of the fourth interlock piece (62), the fifth interlock piece (63), and the sixth interlock piece (64) are hinged to the grounding interlock rod (4). The two ends of the second connecting plate (65) are respectively hinged to the fifth interlock piece (63) and the sixth interlock piece (64). The top of the slider (71) is abutted against one side of the second connecting plate (65).

5. A three-station anti-misoperation interlocking device according to claim 2, characterized in that: One end of the three-position lead screw (7) extends out of the outside of the frame (1), and a first gear (74) is fixedly installed on the extended end of the three-position lead screw (7). One end of the bearing shaft (11) extends out of the outside of the frame (1), and a second gear (111) is fixedly installed on the extended end of the bearing shaft (11). The first gear (74) and the second gear (111) mesh with each other.

6. The three-station anti-misoperation interlocking device according to claim 1, characterized in that: The side wall of the frame (1) is provided with multiple horizontal sliding grooves (12), and a sliding rod (13) is inserted in the sliding groove (12). The two ends of the sliding rod (13) are connected to the frame (1) and the linkage plate (2) respectively. The linkage plate (2) and the frame (1) slide together through the sliding rod (13) and the sliding groove (12).

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