CN220774214U - Reliably-connected grounding interlocking device - Google Patents

Abstract

The utility model discloses a reliable-connection grounding interlocking device, which comprises a supporting frame, a grounding switch assembly, a transmission plate, a fixed frame and a door post, wherein the grounding switch assembly, the transmission plate, the fixed frame and the door post are arranged on the supporting frame; the fixed frame is provided with extension blocks which are positioned on two sides of the transmission plate, and the extension blocks are provided with a first fixed rod and a second fixed rod. According to the utility model, the first fixing rod and the second fixing rod are controlled to extend through the door post, the first fixing rod is arranged in the second fixing rod, and the second fixing rod is contacted with the fixing through hole, so that the door post is uniformly stressed, the connection strength and the fixing are more reliable, and the product has the advantages of reliability in fixing and simplicity in operation.

Description

Reliably-connected grounding interlocking device

Technical Field

The utility model relates to the technical field of electrical switching equipment, in particular to a grounding interlocking device with reliable connection.

Background

In the existing ring main unit, switch cabinet and other electrical cabinets, according to the five-prevention interlocking requirement, when the cabinet door is opened, the grounding switch is in a closing state and can not be operated any more, thereby ensuring the personal safety of operators,

the cabinet body is internally provided with a breaker, a grounding switch, a load switch, an operating mechanism, a contactor, various protection devices and the like, and has five-prevention functions of preventing the on-load from being separated and combined, preventing the on-load from being separated and combined by mistake, preventing the breaker from being separated and combined by mistake, placing the electrified grounding disconnecting link, preventing the disconnecting link from being combined by the electrified disconnecting link, preventing the disconnecting link from being separated by mistake and the like. In addition, the switch cabinet further comprises an interlocking device, and the function of preventing the error entering the electrified interval is generally realized through the interlocking device of the grounding switch and the cabinet door.

When the existing grounding switch is in a closing state and the rear door is in a closing state, the rear door generates pressure on the upper pin and the reset spring sleeved on the upper pin, so that the connecting rod is correspondingly translated forwards, the hook head of the lock hook and the groove on the door post are mutually embedded and connected, and the rear door is locked. The applicant has thus devised an advantageous design and found a solution to the above-mentioned problems, in which the technical solutions described below are created.

Disclosure of Invention

The utility model aims to overcome the defects of the design of the traditional grounding interlocking device and provides a product which is reliable in fixation and simple in operation.

In order to solve the problems, the utility model adopts the following technical scheme.

The grounding interlocking device comprises a supporting frame, and a grounding switch assembly, a transmission plate, a fixed frame and a door post which are arranged on the supporting frame, wherein the transmission plate penetrates through the side walls of the supporting frame and the fixed frame, the door post is abutted against the transmission plate, the transmission plate is provided with a protruding block, the supporting frame is provided with a first spring and is abutted against the transmission plate, and the protruding block is arranged on the grounding switch assembly and used for limiting the grounding switch assembly to move; the fixed frame is provided with extension blocks which are positioned at two sides of the transmission plate, the extension blocks are provided with a first fixed rod and a second fixed rod, the extension blocks are provided with a second spring and are abutted to the first fixed rod and the second fixed rod, the first fixed rod and the second fixed rod are provided with transmission arms and are hinged to the transmission plate, and the door post is provided with a fixed through hole; when pressure is applied to the door post, the transmission plate translates, the protruding block leaves the grounding switch assembly and the transmission arm to move, the fixing through hole, the first fixing rod and the second fixing rod are located on the same center line, the second spring releases acting force to push the first fixing rod and the second fixing rod to move, the first fixing rod is arranged inside the second fixing rod, and the second fixing rod is in contact with the fixing through hole.

Preferably, the lateral wall of lug is equipped with the stopper to the lateral wall of butt braced frame, the drive plate is equipped with first roof, second roof, first roof is equipped with first guide pillar, gatepost butt second roof, the both sides of drive plate are equipped with the extension board, the extension board is equipped with the pole, the terminal surface of pole is equipped with the baffle ring.

Preferably, the support frame is provided with a second guide post, the first spring is arranged on the first guide post and the second guide post and is abutted against the first top plate, the support frame is provided with a guide block, and the guide block is provided with a hook block and is abutted against the protruding block.

Preferably, the fixing frame is provided with a yielding through hole, the extension block is provided with a reinforcing rib, the extension block is provided with a support block, the support block is provided with a yielding groove, and the side wall of the yielding groove is provided with a perforation.

Preferably, the first dead lever, second dead lever set up at the perforation, first dead lever, second dead lever are equipped with the baffle, lateral wall, the baffle of recess are stepped down to second spring butt, the baffle is equipped with the guide arm, and passes the perforation to the protrusion is in the supporting shoe, the second dead lever is equipped with the blind hole, and when first dead lever activity to set up at the blind hole.

Preferably, the transmission arm passes through the abdication through hole and is hinged with the guide rod and the rod.

Preferably, the grounding switch assembly is composed of a connecting sleeve, an operating shaft and a grounding switch executing component, the connecting sleeve is sleeved on the operating shaft, a limiting groove is formed in the connecting sleeve, when the connecting sleeve is rotated, the limiting groove is abutted against the protruding block to limit the rotation of the connecting sleeve, the grounding switch executing component is hinged to the connecting sleeve, and a plurality of cams are arranged on the operating shaft.

Preferably, the first spring has a larger spring force than the second spring.

The beneficial effects are that:

compared with the prior art, the utility model has the beneficial effects that:

after the door is closed, the door post pushes the transmission plate to move, so that the transmission arm moves and the protruding block leaves the limit groove, the resistance applied to the guide rod by the transmission arm gradually decreases, the second spring releases the counter force to push the first fixing rod and the second fixing rod to move until the fixing through hole is positioned at the same center line with the first fixing rod and the second fixing rod, the first fixing rod is arranged in the blind hole, the second fixing rod is contacted with the fixing through hole, so that the door post is uniformly stressed, the first fixing rod is matched with the second fixing rod, the connection strength of the door post and the grounding interlocking device is improved, the connection strength is ensured, at the moment, the operation shaft can be rotated, the grounding knife is separated, the limit groove blocks the protruding block moving outlet, and the door post is fixed at the current position; after the earthing switch is closed, the limit groove is moved away from the lug, the first spring releases the counter force to push the transmission plate to reset, and the counter force is conducted to the guide rod through the transmission arm, so that the first fixing rod and the second fixing rod are reset, the door post is pushed to move outwards for a certain distance, and the product has the advantages of being fixed and reliable and easy to operate.

Drawings

FIG. 1 is a schematic view of a reliable connection ground interlock device according to the present utility model;

FIG. 2 is a schematic side sectional view of a door lock for a reliable grounding interlock of the present utility model;

FIG. 3 is an enlarged view of a detail A of the ground interlock device of FIG. 2 showing a reliable connection in accordance with the present utility model;

FIG. 4 is an enlarged view of a detail B of the ground interlock device of FIG. 2 showing a reliable connection in accordance with the present utility model;

FIG. 5 is a schematic side sectional view of a door of a reliably connected ground interlock device of the present utility model when opened;

FIG. 6 is an enlarged view of a detail C of the ground interlock device of FIG. 5 showing a reliable connection in accordance with the present utility model;

FIG. 7 is an enlarged view of a detail D of the ground interlock device of FIG. 5 showing a reliable connection in accordance with the present utility model;

FIG. 8 is an exploded view of a reliable connection ground interlock device of the present utility model;

FIG. 9 is a second exploded view of a reliable ground interlock device of the present utility model;

the correspondence between the reference numerals and the component names in the drawings is as follows:

reference numerals: 1. a support frame; 2. a ground switch assembly; 3. a drive plate; 4. a fixed frame; 5. a door post; 6. a transmission arm;

11. a first spring; 12. a second guide post; 13. a guide block; 14. a hook block;

21. connecting sleeves; 22. an operation shaft; 23. a grounding switch executing part; 24. a limit groove; 25. a cam;

31. a bump; 32. a limiting block; 33. a first top plate; 34. a second top plate; 35. an extension plate;

331. a first guide post;

351. a rod; 352. a baffle ring;

41. an extension block; 42. a first fixing rod; 43. a second fixing rod; 44. a relief through hole; 45. a support block; 46. reinforcing ribs; 47. a baffle; 48. a blind hole; 49. a second spring;

451. a relief groove; 452. perforating;

471. a guide rod;

51. and fixing the through holes.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1 to 9, a grounding interlocking apparatus with reliable connection includes a supporting frame 1, a grounding switch assembly 2 disposed on the supporting frame 1, a driving plate 3, a fixing frame 4, and a door post 5, wherein the driving plate 3 passes through the supporting frame 1 and the side wall of the fixing frame 4, the door post 5 abuts against the driving plate 3, the driving plate 3 is provided with a bump 31, the supporting frame 1 is provided with a first spring 11 and abuts against the driving plate 3, so that the bump 31 is disposed on the grounding switch assembly 2 for limiting the movement of the grounding switch assembly 2; the fixed frame 4 is provided with extension blocks 41 which are positioned on two sides of the transmission plate 3, the extension blocks 41 are provided with a first fixed rod 42 and a second fixed rod 43, the extension blocks 41 are provided with a second spring 49 and are abutted against the first fixed rod 42 and the second fixed rod 43, the first fixed rod 42 and the second fixed rod 43 are provided with a transmission arm 6 and are hinged to the transmission plate 3, and the door post 5 is provided with a fixed through hole 51; when pressure is applied to the door post 5, the transmission plate 3 translates, the protruding block 31 moves away from the grounding switch assembly 2 and the transmission arm 6, the fixed through hole 51 is positioned at the same center line with the first fixed rod 42 and the second fixed rod 43, the second spring 49 releases acting force to push the first fixed rod 42 and the second fixed rod 43 to move, the first fixed rod 42 is arranged inside the second fixed rod 43, and the second fixed rod 43 is contacted with the fixed through hole 51;

it should be noted that, the side wall of the bump 31 is provided with a limiting block 32 and is abutted against the side wall of the supporting frame 1, the driving plate 3 is provided with a first top plate 33 and a second top plate 34, the first top plate 33 is provided with a first guide post 331, the door post 5 is abutted against the second top plate 34, two sides of the driving plate 3 are provided with extension plates 35, the extension plates 35 are provided with rods 351, the end surfaces of the rods 351 are provided with baffle rings 352, the limiting block 32 limits the distance of the bump 31 extending out of the side wall of the supporting frame 1, the first top plate 33 receives the counterforce of the first spring 11, the second top plate 34 is matched and used, the extension plates 35 provide a supporting function for the rods 351, the rods 351 enable one ends of the driving arms 6 to rotate in the axial direction and play a supporting function, and the baffle rings 352 limit the driving arms 6 and the rods 351 to fall off;

it should be noted that, the supporting frame 1 is provided with a second guide post 12, the first spring 11 is arranged on the first guide post 331 and the second guide post 12 and is abutted against the first top plate 33, the supporting frame 1 is provided with a guide block 13, the guide block 13 is provided with a hook block 14 and is abutted against the projection 31, the first guide post 331 and the second guide post 12 prevent the first spring 11 from falling off in the moving process, the guide block 13 limits the up-and-down movement of the transmission plate 3, and the hook block 14 limits the projection 31 and the transmission plate 3 to move forwards and backwards and leftwards, and the figure 3 is taken as a reference picture of azimuth;

it should be noted that, the fixing frame 4 is provided with a yielding through hole 44, the extension block 41 is provided with a reinforcing rib 46, the extension block 41 is provided with a supporting block 45, the supporting block 45 is provided with a yielding groove 451, the side wall of the yielding groove 451 is provided with a perforation 452, the yielding through hole 44 yields the movement of the driving arm 6 to prevent interference, the reinforcing rib 46 is used for reinforcing the supporting strength of the extension block 41, the supporting block 45 provides support for the first fixing rod 42 and the second fixing rod 43, the yielding groove 451 provides accommodation space for the first fixing rod 42, the second fixing rod 43 and the second spring 49, and the perforation 452 provides guiding function for the movement of the first fixing rod 42 and the second fixing rod 43;

it should be noted that, the first fixing rod 42 and the second fixing rod 43 are disposed at the through hole 452, the first fixing rod 42 and the second fixing rod 43 are provided with the baffle 47, the second spring 49 is abutted against the side wall of the abdication groove 451 and the baffle 47, the baffle 47 is provided with the guide rod 471, and passes through the through hole 452 and protrudes out of the supporting block 45, the second fixing rod 43 is provided with the blind hole 48, when the first fixing rod 42 moves and is disposed at the blind hole 48, the baffle 47 cooperates with the abdication groove 451 to limit the extending distance of the first fixing rod 42 and the second fixing rod 43, and the counter force of the second spring 49 is conducted to the first fixing rod 42 and the second fixing rod 43 through the baffle 47, the guide rod 471 is convenient to hinge with the driving arm 6, the blind hole 48 is convenient for the first fixing rod 42 to contact with the second fixing rod 43, and plays a role of reinforcing and fixing the door post 5;

it should be noted that, the transmission arm 6 passes through the abdication through hole 44 and is hinged to the guide rod 471 and the rod 351, and the transmission arm 6 plays a role in force transmission;

it should be noted that, the grounding switch assembly 2 is composed of a connecting sleeve 21, an operating shaft 22 and a grounding switch executing component 23, the connecting sleeve 21 is sleeved on the operating shaft 22, the connecting sleeve 21 is provided with a limit groove 24, when the connecting sleeve 21 is rotated, the limit groove 24 is abutted against a bump 31 to limit the rotation of the connecting sleeve 21, the grounding switch executing component 23 is hinged on the connecting sleeve 21, the operating shaft 22 is provided with a plurality of cams 25, the rotating power of the operating shaft 22 is selected according to the requirement of a user by controlling the rotating mode of the operating shaft 22 by a handle at present, the connecting sleeve 21 is matched with the grounding switch executing component 23 to be used, the limit groove 24 is matched with the bump 31 to limit the rotation of the connecting sleeve 21, the grounding switch executing component 23 controls the opening and closing actions of a grounding knife, and the cams 25 are matched with other interlocking components such as a front door interlocking, a guide rail interlocking, an opening and closing indicating position and the like;

it should be noted that the elastic force of the first spring 11 is greater than that of the second spring 49. This design is convenient for make first dead lever 42, second dead lever 43 quick return, conveniently opens the cabinet door.

The principle of use of the utility model will now be described as follows:

when the earthing knife is in a closing state, when the cabinet door needs to be closed, the door post 5 is abutted against the second top plate 34, thrust is applied to the door post 5, the transmission plate 3 moves in a translation mode, the protruding block 31 leaves the limit groove 24, the first spring 11 is compressed, the first spring 11 stores energy, the transmission arm 6 is far away from the first fixing rod 42 and the second fixing rod 43, the guide rod 471 loses the support of the transmission arm 6, the second spring 49 releases counterforce to push the first fixing rod 42 and the second fixing rod 43 to move until the fixing through hole 51 and the penetrating hole 452 are positioned at the same center line, the first fixing rod 42 enters the blind hole 48, the second fixing rod 43 enters the fixing through hole 51, the operation shaft 22 is rotated, the earthing switch executing component 23 controls the earthing knife switch to be opened, the connecting sleeve 21 rotates, the movement track of the limit groove 24 and the protruding block 31 is dislocated, at the moment, the counterforce of the first spring 11 enables the protruding block 31 to abut against the connecting sleeve 21, and the fixing of the door post 5 and the earthing interlocking device is completed.

When the cabinet door needs to be opened, the operation shaft 22 is rotated, the grounding switch executing component 23 is rotated, the grounding knife is further switched on, the limiting groove 24 and the movable track of the protruding block 31 are in the same straight line, the first spring 11 releases the counter force, the transmission plate 3 is pushed to reset, the protruding block 31 extends out of the side wall of the supporting frame 1 and is positioned in the limiting groove 24 until the limiting block 32 abuts against the side wall of the supporting frame 1, the protruding block 31 stops moving, the transmission arm 6 provides supporting force for the guide rod 471, the guide rod 471 resets, the second spring 49 is compressed, the second spring 49 stores energy, the first fixing rod 42 is separated from the blind hole 48, the second fixing rod 43 is separated from the fixing through hole 51, and the transmission plate 3 pushes the door post 5 to move for a distance, so that a person can know that the cabinet door is opened.

Through the design scheme, the product can be fixed reliably and is simple to operate.

The foregoing is a further elaboration of the present utility model in connection with the detailed description, and it is not intended that the utility model be limited to the specific embodiments shown, but rather that a number of simple deductions or substitutions be made by one of ordinary skill in the art without departing from the spirit of the utility model, should be considered as falling within the scope of the utility model as defined in the appended claims.

Claims (8)

1. The utility model provides a connect reliable ground connection interlock, includes braced frame (1), and sets up at braced frame (1) ground connection switch subassembly (2), drive plate (3), fixed frame (4), gatepost (5), drive plate (3) pass braced frame (1), fixed frame (4) lateral wall, gatepost (5) butt drive plate (3), drive plate (3) are equipped with lug (31), its characterized in that: the supporting frame (1) is provided with a first spring (11) and is abutted against the transmission plate (3), so that the protruding block (31) is arranged on the grounding switch assembly (2) and used for limiting the movement of the grounding switch assembly (2);

the fixed frame (4) is provided with an extension block (41) and is positioned at two sides of the transmission plate (3), the extension block (41) is provided with a first fixed rod (42) and a second fixed rod (43), the extension block (41) is provided with a second spring (49) and is abutted to the first fixed rod (42) and the second fixed rod (43), the first fixed rod (42) and the second fixed rod (43) are provided with a transmission arm (6) and are hinged to the transmission plate (3), and the door post (5) is provided with a fixed through hole (51);

when pressure is applied to the door post (5), the transmission plate (3) translates, the protruding block (31) is separated from the grounding switch assembly (2) and the transmission arm (6) is moved, the fixing through hole (51) is located at the same center line with the first fixing rod (42) and the second fixing rod (43), the second spring (49) releases acting force to push the first fixing rod (42) and the second fixing rod (43) to move, the first fixing rod (42) is arranged inside the second fixing rod (43), and the second fixing rod (43) is in contact with the fixing through hole (51).

2. The connection-reliable ground interlock of claim 1 wherein: the side wall of lug (31) is equipped with stopper (32) to the lateral wall of butt braced frame (1), drive plate (3) are equipped with first roof (33), second roof (34), first roof (33) are equipped with first guide pillar (331), gatepost (5) butt second roof (34), the both sides of drive plate (3) are equipped with extension board (35), extension board (35) are equipped with pole (351), the terminal surface of pole (351) is equipped with baffle ring (352).

3. The connection-reliable ground interlock of claim 2 wherein: the support frame (1) is provided with a second guide pillar (12), the first spring (11) is arranged on the first guide pillar (331) and the second guide pillar (12) and is abutted to the first top plate (33), the support frame (1) is provided with a guide block (13), and the guide block (13) is provided with a hook block (14) and is abutted to the protruding block (31).

4. A connection-reliable ground interlock device as defined in claim 3 wherein: the fixing frame (4) is provided with a yielding through hole (44), the extension block (41) is provided with a reinforcing rib (46), the extension block (41) is provided with a supporting block (45), the supporting block (45) is provided with a yielding groove (451), and the side wall of the yielding groove (451) is provided with a perforation (452).

5. The connection-reliable ground interlock of claim 4 wherein: the first dead lever (42), second dead lever (43) set up at perforation (452), first dead lever (42), second dead lever (43) are equipped with baffle (47), lateral wall, baffle (47) of recess (451) are yielded in second spring (49) butt, baffle (47) are equipped with guide arm (471), and pass perforation (452) to the protrusion is in supporting shoe (45), second dead lever (43) are equipped with blind hole (48), when first dead lever (42) activity, and set up at blind hole (48).

6. The connection-reliable ground interlock of claim 5 wherein: the transmission arm (6) passes through the abdication through hole (44) and is hinged with the guide rod (471) and the rod (351).

7. The connection-reliable ground interlock of claim 5 wherein: the grounding switch assembly (2) is composed of a connecting sleeve (21), an operating shaft (22) and a grounding switch executing component (23), the connecting sleeve (21) is sleeved on the operating shaft (22), a limiting groove (24) is formed in the connecting sleeve (21), when the connecting sleeve (21) is rotated, the limiting groove (24) abuts against a protruding block (31) to limit the connecting sleeve (21) to rotate, the grounding switch executing component (23) is hinged to the connecting sleeve (21), and a plurality of cams (25) are arranged on the operating shaft (22).

8. The connection-reliable ground interlock of claim 1 wherein: the elastic force of the first spring (11) is larger than that of the second spring (49).