Integrated interlocking device for grounding system of metal-clad removable high-voltage switchgear

Abstract

The invention provides a comprehensive interlocking device for a grounding system of a metal-clad removable high-voltage switch cabinet. When a rear door is closed, the rear end of a limiting arm is stuck in a limiting groove of the cabinet rear door, the rear door cannot be opened, the connecting block is in a tilted state, the connecting arm is also in a tilted state, the grounding knife is in an upwardly lifted state and is not grounded, the opening is opened, a tool is inserted from the opening to rotate the rotating shaft inward, the connecting arm is moved downward, the rotating shaft is rotated to move the screw downward, so that the middle block drives the connecting block downward, so that the movable shaft rotates in the opposite direction to the rear door, drives the limiting arm to tilt, and is not stuck in the limiting groove, so that the rear door can be opened, and at this time the grounding knife on the movable shaft rotates downward to be grounded, so that the grounding knife is guaranteed to be grounded when the rear door is opened, thereby ensuring the safety of human life.

Description

Technical Field

[0001] The invention relates to the field of metal armored removable high-voltage switch cabinet, in particular to a comprehensive interlocking device for a grounding system of a metal armored removable high-voltage switch cabinet. Background Art

[0002] When the metal armored removable high-voltage switchgear is working normally, the grounding knife is not grounded, but in some cases, the rear door needs to be opened for inspection and maintenance. When the rear door is opened, the grounding knife must be grounded to ensure human life safety. A comprehensive interlocking device for the grounding system is required. When using tools from the front, the rear door needs to be opened and the grounding knife needs to be grounded at the same time. Therefore, it is very necessary to solve this problem. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a comprehensive interlocking device for the grounding system of a metal-clad removable high-voltage switch cabinet. When the rear door is closed, the rear end of the limit arm is stuck in the limit groove of the rear door of the cabinet, and the rear door cannot be opened. The connecting block is in a tilted state, the connecting arm is also in a tilted state, and the grounding knife is in an upwardly lifted state and not grounded. The opening is opened, and a tool is inserted from the opening to rotate the shaft inward to move the connecting arm downward. The rotating shaft is rotated to move the screw downward, so that the intermediate block drives the connecting block to move downward, and the movable shaft rotates in the opposite direction of the rear door, driving the limit arm to tilt and not get stuck. The rear door can be opened only when it is in the limit groove. At this time, the grounding knife on the movable shaft rotates downward to ground, and when the rear door of the cabinet is closed, when the shaft rotates inward, the blocking arm moves downward and contacts the front end head of the upper front-rear moving column to push it backward, and the upper front-rear moving column pushes the lower front-rear moving column backward through the movable arm, thereby pushing the rear door open. This action is carried out simultaneously with the limit arm tilting upward and the grounding knife grounding downward, thereby ensuring that the grounding knife is grounded when the rear door is open, ensuring people's life safety, and solving the problems arising in the background technology.

[0004] The object of the present invention is to provide a comprehensive interlocking device for the grounding system of a metal-clad removable high-voltage switch cabinet, comprising a cabinet body, wherein a horizontal rotating shaft in the front-to-back direction is arranged at the rear end of the inner side surface of the cabinet body through a rotating bearing, and the front end of the rotating shaft extends to the front door of the cabinet body; a collar is arranged on the rear part of the rotating shaft, and a connecting arm is arranged on the collar; the connecting arm is connected to a screw rod downward through a movably connected connecting frame, and an intermediate block is connected to the bottom of the screw rod; a horizontal movable shaft in the left-to-right direction is arranged at the rear end of the cabinet body near the rear door through a bearing, and a tilted connecting block is arranged upward at the top of the movable shaft near the side surface of the cabinet body, and the top of the connecting block is movably connected to the intermediate block; a backward limiting arm is distributed on the movable shaft, and the front and rear ends of the limiting arm are bent, the front end is fixed on the movable shaft, and the rear end is stuck in the rear door of the cabinet body A limit groove matching the rear end of the limit arm is provided on the inner side of the rear door of the cabinet, and the rear end of the limit arm is placed in the limit groove of the rear door of the cabinet; a grounding knife is connected to the movable shaft; when the rear door is closed, the rear end of the limit arm is stuck in the limit groove of the rear door of the cabinet, and the rear door cannot be opened, the connecting block is in a tilted state, the connecting arm is also in a tilted state, and the grounding knife is in an upward lifted state and not grounded, the rotating shaft is rotated inward to move the connecting arm downward, and the rotating shaft is rotated to move the screw downward, so that the middle block drives the connecting block to move downward, so that the movable shaft rotates in the opposite direction to the rear door, driving the limit arm to tilt and not stuck in the limit groove, and the rear door can be opened. At this time, the grounding knife on the movable shaft rotates downward to ground; a circular opening is provided at the rotating shaft of the front door of the cabinet, and a tool is inserted from the opening to rotate the rotating shaft.

[0005] Further improvements are: a longitudinal slide groove is provided on the lower inner wall of the opening, a longitudinal sliding slide is arranged in the slide groove, and the slide is located at the bottom of the opening; a lower fixed plate with a longitudinal through opening is extended forward from the top of the slide; a rotating arm is movably provided above the opening of the front door, the rotating arm rotates around its top, an upper fixed plate with a longitudinal through opening is extended forward from the bottom of the rotating arm, and the longitudinal through holes of the lower fixed plate and the upper fixed plate are inserted into a lock for locking; a limit head is provided on the upper left side of the opening, and when the rotating arm is in a vertical state, it is located on the right side of the limit head, and the limit head limits the position of the rotating arm to prevent it from further rotating to the left.

[0006] A further improvement is that: a limit plate with a through hole passes through the middle of the rotating shaft to limit the horizontal position of the rotating shaft; a through hole is provided on the limit plate below the rotating shaft, a side plate is provided on the side of the through hole close to the rear door, a horizontal movable upper front-to-back moving column is provided through the front and back of the side plate, the front end of the upper front-to-back moving column can be extended forward into the through hole, a movable arm is movably connected to the upper front-to-back moving column through a stud, a horizontal movable lower front-to-back moving column is movably connected to the bottom of the movable arm, the right end of the lower front-to-back moving column is movably connected to the movable arm, and the middle of the lower front-to-back moving column passes through a hole provided in the cabinet The limit frame on the rear end of the side surface, the rear end of the lower front-to-back moving column is in contact with the rear door; a stop arm is provided on the rotating shaft above the front side of the through hole of the limit plate; when the rear door of the cabinet is closed, the front end head of the upper front-to-back moving column extends in front of the through hole, and the stop arm is located above the front side of the front end head of the upper front-to-back moving column. When the rotating shaft is rotated inward, the stop arm moves downward and contacts the front end head of the upper front-to-back moving column, pushing it backward, and the upper front-to-back moving column pushes the lower front-to-back moving column backward through the movable arm, thereby pushing the rear door open. This action is carried out simultaneously with the limit arm tilting upward and the grounding knife grounding downward.

[0007] A further improvement is that nuts are provided at the connection between the intermediate block and the screw rod and at the connection between the connecting frame and the screw rod, so that the position height of the screw rod, the intermediate block and the connecting frame can be adjusted.

[0008] A further improvement is that: a groove matching the limit head is provided near the limit head on the rotating arm, and when the rotating arm is in a vertical state, the limit head is located in the groove.

[0009] The beneficial effects of the present invention are as follows: when the rear door of the present invention is closed, the rear end of the limit arm is stuck in the limit groove of the rear door of the cabinet, the rear door cannot be opened, the connecting block is in a tilted state, the connecting arm is also in a tilted state, the grounding knife is in an upwardly lifted state and is not grounded, the opening is opened, a tool is inserted from the opening to rotate the rotating shaft inwardly, the connecting arm moves downward, the rotating shaft rotates to move the screw downward, thereby the middle block drives the connecting block downward, thereby the movable shaft rotates in the opposite direction of the rear door, drives the limit arm to tilt and is not stuck in the limit groove, and then the rear door can be opened. At this time, the grounding knife on the movable shaft rotates downward and is grounded, and when the rear door of the cabinet is closed, when the rotating shaft is rotated inwardly, the stop arm moves downward and contacts with the front end head of the upper front-rear moving column, pushing it backward, and the upper front-rear moving column pushes the lower front-rear moving column backward through the movable arm, thereby pushing the rear door open. This action, the limit arm tilting upward and the grounding knife grounding downward are performed simultaneously, thereby ensuring that the grounding knife is definitely grounded when the rear door is opened, thereby ensuring people's life safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the inner side of the cabinet of the present invention (the left side is the direction of the cabinet rear door, and the right side is the direction of the cabinet front door).

[0011] Figure 2 It is a schematic diagram of the front door of the present invention.

[0012] Figure 3 It is an enlarged schematic diagram of the front door opening of the present invention.

[0013] Figure 4 It is an overall schematic diagram of the interior of the present invention (the left side is the direction of the cabinet rear door, and the right side is the direction of the cabinet front door).

[0014] Wherein: 1-cabinet, 2-rotating bearing, 3-rotating shaft, 4-collar, 5-connecting arm, 6-connecting frame, 7-screw, 8-middle block, 9-movable shaft, 10-connecting block, 11-limiting arm, 12-limiting groove, 13-opening, 14-sliding plate, 15-lower fixed plate, 16-rotating arm, 17-upper fixed plate, 18-limiting head, 19-limiting plate, 20-through hole, 21-side plate, 22-upper front and rear moving column, 23-movable arm, 24-lower front and rear moving column, 25-limiting frame, 26-stop arm, 27-nut, 28-groove, 29-front door, 30-rear door. DETAILED DESCRIPTION

[0015] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with examples. The examples are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0016] like Figure 1-4As shown, the present embodiment is a metal armored removable high-voltage switch cabinet grounding system integrated interlocking device, including a cabinet 1, the rear end of the inner side surface of the cabinet 1 is provided with a horizontal rotating shaft 3 in the front-to-back direction through a rotating bearing 2, and the front end of the rotating shaft 3 extends to the front door of the cabinet 1; a collar 4 is provided on the rear part of the rotating shaft 3, and a connecting arm 5 is provided on the collar 4; the connecting arm 5 is connected to a screw rod 7 downward through a movably connected connecting frame 6, and the bottom of the screw 7 is connected to an intermediate block 8; a horizontal movable shaft 9 in the left-right direction is provided through a bearing at the rear end of the cabinet 1 near the rear door, and a tilted connecting block 10 is provided upward at the top of the movable shaft 9 near the side of the cabinet 1, and the top of the connecting block 10 is movably connected to the intermediate block 8; a backward limiting arm 11 is distributed on the movable shaft 9, and the front and rear ends of the limiting arm 11 are bent, the front end is fixed on the movable shaft 9, and the rear end is stuck on the rear door of the cabinet 1, and the cabinet A limiting groove 12 matching the rear end of the limiting arm 11 is arranged on the inner side of the rear door 1, and the rear end of the limiting arm 11 is placed in the limiting groove 12 of the rear door of the cabinet 1; a grounding knife is connected to the movable shaft 9; when the rear door is closed, the rear end of the limiting arm 11 is stuck in the limiting groove 12 of the rear door of the cabinet 1, and the rear door cannot be opened. The connecting block 10 is in a tilted state, the connecting arm 5 is also in a tilted state, and the grounding knife is in an upwardly lifted state and not grounded. The rotating shaft 3 is rotated inward to move the connecting arm 5 downward, and the rotating shaft is rotated to move the screw 7 downward, so that the intermediate block 8 drives the connecting block 10 to move downward, so that the movable shaft 9 rotates in the opposite direction of the rear door, drives the limiting arm 11 to tilt, and is not stuck in the limiting groove 12, so that the rear door can be opened. At this time, the grounding knife on the movable shaft 9 rotates downward to ground; a circular opening 13 is arranged at the rotating shaft 3 of the front door of the cabinet 1, and a tool is inserted from the opening 13 to rotate the rotating shaft.

[0017] A longitudinal slide groove is provided on the lower inner wall of the opening 13, and a longitudinal sliding slide plate 14 is arranged in the slide groove, and the slide plate 14 is located at the bottom of the opening 13; a lower fixing plate 15 with a longitudinal through opening is extended forward from the top of the slide plate 14; a rotating arm 16 is movably provided above the opening 13 of the front door, and the rotating arm 16 rotates around its top, and an upper fixing plate 17 with a longitudinal through opening is extended forward from the bottom of the rotating arm 16, and the longitudinal through holes of the lower fixing plate 15 and the upper fixing plate 17 are inserted into a lock for locking; a limiting head 18 is provided on the upper left side of the opening 13, and when the rotating arm 16 is in a vertical state, it is located on the right side of the limiting head 18, and the limiting head 18 limits the position of the rotating arm 16 to prevent it from further rotating to the left.

[0018] The middle part of the rotating shaft 3 passes through a limit plate 19 with a through hole to limit the horizontal position of the rotating shaft 3; the limit plate 19 is provided with a through hole 20 that passes through the front and back below the rotating shaft 3, and a side plate 21 is provided on the side of the through hole 20 close to the rear door, and a horizontal movable upper front and rear moving column 22 is provided through the front and rear of the side plate 21, and the front end of the upper front and rear moving column 22 can extend forward into the through hole 20, and the upper front and rear moving column 22 is movably connected with a movable arm 23 through a stud, and the bottom of the movable arm 23 is movably connected with a horizontal movable lower front and rear moving column 24, and the right end of the lower front and rear moving column 24 is movably connected to the movable arm 23, and the middle of the lower front and rear moving column 24 passes through a stud arranged on the inner side of the cabinet 1 The limit frame 25 on the rear end, the rear end of the lower front-to-back moving column 24 contacts the rear door; a stop arm 26 is arranged above the front side of the through hole 20 of the limit plate 19 on the rotating shaft 3; when the rear door of the cabinet 1 is closed, the front end head of the upper front-to-back moving column 22 extends in front of the through hole 20, and the stop arm 26 is located above the front side of the front end head of the upper front-to-back moving column 22. When the rotating shaft 3 is rotated inward, the stop arm 26 moves down and contacts the front end head of the upper front-to-back moving column 22, pushing it back, and the upper front-to-back moving column 22 pushes the lower front-to-back moving column 24 back through the movable arm 23, thereby pushing the rear door open. This action is carried out simultaneously with the limit arm 11 tilting upward and the grounding knife grounding downward. The connection between the intermediate block 8 and the screw 7 and the connection between the connecting frame 6 and the screw 7 are all provided with nuts 27, so that the position height of the screw 7, the intermediate block 8 and the connecting frame 6 can be adjusted. The rotating arm 16 has a groove 28 matching the limiting head 18 near the limiting head 18 . When the rotating arm 16 is in a vertical state, the limiting head 18 is located in the groove 28 .

[0019] When the rear door is closed, the rear end of the limit arm 11 is stuck in the limit groove 12 of the rear door of the cabinet 1, and the rear door cannot be opened. The connecting block 10 is in a tilted state, the connecting arm 5 is also in a tilted state, and the grounding knife is in an upwardly lifted state and not grounded. The opening 13 is opened, and a tool is inserted from the opening 13 to rotate the shaft 3 inward to move the connecting arm 5 downward. The rotating shaft 3 moves the screw 7 downward, so that the intermediate block 8 drives the connecting block 10 to move downward, so that the movable shaft 9 rotates in the opposite direction of the rear door, driving the limit arm 11 to tilt and not get stuck in the limit groove 12, and then the rear door can be opened. To open the rear door, the grounding knife on the movable shaft 9 rotates downward to the ground, and when the rear door of the cabinet 1 is closed, when the shaft 3 is rotated inward, the blocking arm 26 moves downward to contact the front end head of the upper front-rear movable column 22, pushing it backward, and the upper front-rear movable column 22 pushes the lower front-rear movable column 24 backward through the movable arm 23, thereby pushing the rear door open. This action is carried out simultaneously with the limit arm 11 tilting upward and the grounding knife being grounded downward, thereby ensuring that the grounding knife is grounded when the rear door is opened, thereby ensuring people's life safety.

Claims

1. A metal-clad removable high-voltage switch cabinet grounding system integrated interlocking device, comprising a cabinet body (1), Features: The rear end of the inner side surface of the cabinet (1) is provided with a horizontal rotating shaft (3) in the front-to-back direction through a rotating bearing (2), and the front end of the rotating shaft (3) extends to the front door of the cabinet (1); a collar (4) is provided on the rear of the rotating shaft (3), and a connecting arm (5) is provided on the collar (4); the connecting arm (5) is connected to a screw rod (7) downward through a movably connected connecting frame (6), and the bottom of the screw rod (7) is connected to an intermediate block (8); a horizontal movable shaft (9) in the left-to-right direction is provided through a bearing at the rear end of the inner side surface of the cabinet (1) near the rear door, and a tilted connecting block (10) is provided upward at the top of the movable shaft (9) near the side surface of the cabinet (1), and the top of the connecting block (10) is movably connected to the intermediate block (8); a rearward limiting arm (11) is distributed on the movable shaft (9), and the front and rear ends of the limiting arm (11) are bent, the front end is fixed on the movable shaft (9), and the rear end is clamped on the rear door of the cabinet (1), and the inner side of the rear door of the cabinet (1) is provided with a connecting block connected to the limiting arm (11). The rear end of the limit arm (11) is placed in the limit slot (12) of the rear door of the cabinet body (1); a grounding knife is connected to the movable shaft (9); when the rear door is closed, the rear end of the limit arm (11) is stuck in the limit slot (12) of the rear door of the cabinet body (1), the rear door cannot be opened, the connecting block (10) is in a tilted state, the connecting arm (5) is also in a tilted state, the grounding knife is in an upwardly lifted state and is not grounded, the rotating shaft (3) is rotated inward, and the connecting arm (5) is (5) moves downward, rotates the rotating shaft to move the screw rod (7) downward, thereby the middle block (8) drives the connecting block (10) to move downward, so that the movable shaft (9) rotates in the opposite direction of the rear door, drives the limit arm (11) to tilt up, and is not stuck in the limit groove (12), so that the rear door can be opened. At this time, the grounding knife on the movable shaft (9) rotates downward to ground; the front door of the cabinet (1) is provided with a circular opening (13) at the rotating shaft (3), and a tool is inserted into the opening (13) to rotate the rotating shaft; The lower inner wall of the opening (13) is provided with a longitudinal slide groove, and a slide plate (14) is arranged in the slide groove for longitudinal sliding, and the slide plate (14) is located at the bottom of the opening (13); A lower fixing plate (15) with a longitudinal opening extends forward from the top of the sliding plate (14); a rotating arm (16) is movably arranged above the front door at the opening (13); the rotating arm (16) rotates around its top; an upper fixing plate (17) with a longitudinal opening extends forward from the bottom of the rotating arm (16); the longitudinal through holes of the lower fixing plate (15) and the upper fixing plate (17) are inserted into a lock to lock; a limiting head (18) is arranged on the left side above the opening (13); when the rotating arm (16) is in a vertical state, it is located on the right side of the limiting head (18); the limiting head (18) limits the position of the rotating arm (16) to prevent it from further rotating to the left; The middle of the rotating shaft (3) passes through a limiting plate (19) with a through hole to limit the horizontal position of the rotating shaft (3); the limiting plate (19) is provided with a through hole (20) extending forward and backward below the rotating shaft (3); a side plate (21) is provided on the side of the through hole (20) close to the rear door; a horizontal movable upper front-to-back moving column (22) is provided in the side plate (21) through the front and back; the front end of the upper front-to-back moving column (22) can extend forward into the through hole (20); a movable arm (23) is movably connected to the upper front-to-back moving column (22) through a stud; a horizontal movable lower front-to-back moving column (24) is movably connected to the bottom of the movable arm (23); the right end of the lower front-to-back moving column (24) is movably connected to the movable arm (23); the middle of the lower front-to-back moving column (24) passes through a movable arm (23) provided in the cabinet (1); The limiting frame (25) on the rear end of the side surface, the rear end of the lower front-to-back moving column (24) contacts the rear door; a blocking arm (26) is arranged on the rotating shaft (3) above the front side of the through hole (20) of the limiting plate (19); when the rear door of the cabinet (1) is closed, the front end head of the upper front-to-back moving column (22) extends in front of the through hole (20), and the blocking arm (26) is located above the front side of the front end head of the upper front-to-back moving column (22). When the rotating shaft (3) is rotated inward, the blocking arm (26) moves downward and contacts the front end head of the upper front-to-back moving column (22), pushing it backward, and the upper front-to-back moving column (22) pushes the lower front-to-back moving column (24) backward through the movable arm (23), thereby pushing the rear door open. This action is performed simultaneously with the limiting arm (11) tilting upward and the grounding knife grounding downward.

2. The metal-clad removable high-voltage switch cabinet grounding system integrated interlocking device as claimed in claim 1, Features: Nuts (27) are provided at the connection points between the intermediate block (8) and the screw rod (7) and at the connection points between the connecting frame (6) and the screw rod (7), so that the positions of the screw rod (7), the intermediate block (8) and the connecting frame (6) are height-adjustable.

3. The metal-clad removable high-voltage switch cabinet grounding system integrated interlocking device as claimed in claim 1, Features: The rotating arm (16) has a groove (28) that matches the limiting head (18) near the limiting head (18); when the rotating arm (16) is in a vertical state, the limiting head (18) is located in the groove (28).

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