CN217134232U

CN217134232U - Safe and reliable mechanical locking device for front door and rear door of switch cabinet

Info

Publication number: CN217134232U
Application number: CN202221049208.9U
Authority: CN
Inventors: 袁铁军; 丁伟; 周琪翔; 季胜蓝; 梁义
Original assignee: Jiangsu Dongyuan Electrical Group Co Ltd
Current assignee: Gotion High Tech Co Ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-08-05
Anticipated expiration: 2032-05-05

Abstract

The utility model belongs to the technical field of the cubical switchboard, a safe and reliable's cubical switchboard back door machinery blocking device is provided, a safe and reliable's cubical switchboard back door machinery blocking device, including the qianmen, the back door, slewing mechanism and shutting subassembly, be equipped with the back door locking plate on the back door, back door locking plate and shutting subassembly are spacing to be connected, the shutting subassembly includes the locking pole, drive mechanism includes first push rod, the second push rod, displacement fixed plate and switching-over fixed plate, first push rod is in proper order through the displacement fixed plate, the second push rod, the switching-over fixed plate, the locking pole is connected with back door locking plate transmission, this blocking device is succinct, convenient, reliable, with low costs, it is few to occupy the cubical switchboard inner space, easily satisfy the requirement of electric clearance and insulating distance in the cubical switchboard.

Description

Safe and reliable's cubical switchboard front and back door mechanical locking device

Technical Field

The utility model belongs to the technical field of the cubical switchboard, concretely relates to safe and reliable's cubical switchboard front and back door mechanical locking device.

Background

The high-voltage switch cabinet is provided with a front door and a rear door, and in order to ensure the safety of operators and equipment, the front door and the rear door of the switch cabinet are sequentially locked to ensure the safety of personnel entering the cabinet.

The front door and the rear door on the existing domestic switch equipment are usually not locked or are normally locked by adopting an electric lock or a program lock, the locking requirement between the front door and the rear door of the switch cabinet and the implementation of a corresponding operation sequence can not be met, and the requirement of mistakenly entering an electrified interval can be prevented.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a safe and reliable's cubical switchboard front and back door mechanical locking device, this blocking device is succinct, convenient, reliable, with low costs, and it is few to occupy the cubical switchboard inner space, easily satisfies the requirement of electrical clearance and insulating distance in the cubical switchboard.

The utility model provides a technical scheme as follows:

a safe and reliable mechanical locking device for a front door and a rear door of a switch cabinet comprises a front door, a rear door, a transmission mechanism and a locking component, wherein the rear door is provided with a rear door locking plate which is in limit connection with the locking component, and the locking component comprises a locking rod;

the transmission mechanism comprises a first push rod, a second push rod, a displacement fixing plate and a reversing fixing plate, wherein the first push rod is in transmission connection with the rear door locking plate sequentially through the displacement fixing plate, the second push rod, the reversing fixing plate and the locking rod.

Furthermore, the displacement fixed plate is arranged on the side wall of the switch cabinet close to the front door, a limiting block is arranged on the displacement fixed plate, the first push rod is limited and fixed with the limiting block, a displacement change plate is rotationally fixed on one side, far away from the front door, of the first push rod, and the other side of the displacement change plate is rotationally connected with the second push rod.

Furthermore, a reversing main shaft is arranged on the reversing fixing plate, a first reversing crank arm is fixedly connected to the lower side of the reversing main shaft, a second reversing crank arm is fixedly connected to the upper side of the reversing main shaft, the other end of the first reversing crank arm is rotatably connected with the second push rod, and the other end of the second reversing crank arm is rotatably connected with the locking rod.

Furthermore, two vertical guide grooves are formed in the left side and the right side of the fixing plate, a locking rod is arranged right above the left side guide groove for guiding, and a second push rod is arranged right below the right side guide groove for guiding.

Furthermore, a rectangular hole is formed in the joint of the first reversing crank arm and the second push rod, and a rectangular hole is formed in the joint of the second reversing crank arm and the locking rod.

Furthermore, the locking assembly further comprises a locking rod baffle, a locking reset rod is arranged in the locking rod baffle, a locking reset spring is arranged in the locking reset rod, a connecting plate is connected to the side face of the locking rod baffle, and the other end of the connecting plate is in limit connection with the locking rod.

Furthermore, a round hole is formed in the locking plate of the rear door, and a round hole is formed in the position, on the same horizontal plane with the locking rod, of the baffle of the locking rod.

Furthermore, two baffle plates are arranged on the second push rod, and a compression spring is arranged between the two baffle plates.

Furthermore, a stop block is arranged at the contact position of the front door and the first push rod.

To sum up, the utility model has the advantages of it is following:

the utility model discloses a mechanical blocking device does not receive environmental factor to influence, and this blocking device is succinct, convenient, reliable, with low costs, and it is few to occupy the cubical switchboard inner space, easily satisfies the requirement of electrical clearance and insulating distance in the cubical switchboard, and has been in implementation.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is an enlarged bottom view taken at A in FIG. 1;

FIG. 4 is a schematic top view of the locking assembly of the present invention;

fig. 5 is a schematic sectional view of the locking assembly of the present invention.

The reference numbers are as follows:

1. a front door; 2. a rear door; 3. a transmission mechanism; 4. a locking assembly; 11. a locking plate; 31. a first push rod; 32. a second push rod; 33. a displacement fixing plate; 34. a reversing fixed plate; 35. a displacement variation plate; 36. reversing the main shaft; 37. a first reversing crank arm; 38. a second reversing crank arm; 39. a compression spring; 41. a locking lever; 42. a locking lever baffle; 43. a latching reset lever; 44. a locking return spring; 45. a connecting plate; 341. guiding the locking rod; 342. and the second push rod is guided.

Detailed Description

In order to deepen the understanding of the present invention, the present invention will be further described in detail with reference to the following embodiments and the attached drawings, and the embodiments are only used for explaining the present invention, and do not constitute the limitation to the protection scope of the present invention.

As shown in fig. 1-5, a safe and reliable mechanical locking device for front and rear doors of a switch cabinet comprises a front door 1, a rear door 2, a transmission mechanism 3 and a locking component 4, wherein the rear door 2 is provided with a rear door locking plate 11, the rear door locking plate 11 is in limit connection with the locking component 4, and the locking component 4 comprises a locking rod 41;

the transmission mechanism 3 comprises a first push rod 31, a second push rod 32, a displacement fixing plate 33 and a reversing fixing plate 34, wherein the first push rod 31 is in transmission connection with the rear door locking plate 11 sequentially through the displacement fixing plate 33, the second push rod 32, the reversing fixing plate 34 and the locking rod 41.

In this embodiment, the displacement fixing plate 33 is disposed on a side wall of the switch cabinet near the front door 1, a limit block is disposed on the displacement fixing plate 33, the first push rod 31 is fixed to the limit block, a displacement changing plate 35 is fixed to one side of the first push rod 31 away from the front door 1 in a rotating manner, the other side of the displacement changing plate 35 is connected to the second push rod 32 in a rotating manner, a reversing main shaft 36 is disposed on the reversing fixing plate 34, a first reversing crank arm 37 is fixedly connected to a lower side of the reversing main shaft 36, a second reversing crank arm 38 is fixedly connected to an upper side of the reversing main shaft 36, the other end of the first reversing crank arm 37 is connected to the second push rod 32 in a rotating manner, and the other end of the second reversing crank arm 38 is connected to the locking rod 41 in a rotating manner, so that the locking rod 41 can be driven to move back and forth by the back movement of the second push rod 32.

In this embodiment, two vertical guide grooves are formed in the left side and the right side of the fixing plate 34, a locking rod guide 341 is arranged right above the left side guide groove, a second push rod guide 342 is arranged right below the right side guide groove, the guide grooves are used for ensuring that the second push rod 32 and the locking rod 41 both keep linear motion, a rectangular hole is formed in the connection position of the first reversing crank arm 37 and the second push rod 32, a rectangular hole is formed in the connection position of the second reversing crank arm 38 and the locking rod 41, and the first reversing crank arm 37 and the second reversing crank arm 38 can move circularly only when the second push rod 32 and the locking rod 41 move linearly due to the rectangular holes.

In this embodiment, the locking assembly 4 further includes a locking lever baffle 42, a locking return rod 43 is disposed in the locking lever baffle 42, a locking return spring 44 is disposed in the locking return rod 43, a connecting plate 45 is connected to a side surface of the locking lever baffle 42, the other end of the connecting plate 45 is connected to the locking lever 41 in a limiting manner, and the locking lever 41 can move back and forth through the connecting plate 45.

In this embodiment, a circular hole is formed on the rear door locking plate 11, a circular hole is formed on the locking rod baffle 42 at the same level with the locking rod 41, and the locking rod 41 can pass through the circular hole to realize locking.

In this embodiment, the second push rod 32 is provided with two baffles, and a compression spring 39 is arranged between the two baffles.

In this embodiment, the front door 1 is provided with a stopper at a contact point with the first push rod 31 for pushing the first push rod 31 when the front door 1 is closed.

The utility model discloses operating device and blocking device's principle as follows:

first, the switch cabinet is transferred from the maintenance state to the running state

The switch cabinet back door 2 is closed firstly, the locking plate 11 arranged on the back door 2 is inserted into the locking assembly 4, the locking reset rod 43 and the locking reset spring 44 in the locking assembly 4 are compressed, the round hole on the locking plate 11 is aligned with the round hole on the locking rod baffle plate 42, then the front door 1 of the switch cabinet can be operated to be closed, when the front door 1 is closed, the stop block in the front door 1 compresses the first push rod 31 to move inwards, the displacement change plate 35 is driven to move, and meanwhile, the second push rod 32 is driven to move inwards, then the first reversing crank arm 37 is driven to rotate, the second reversing crank arm 38 is driven to rotate through the reversing main shaft 36, meanwhile, the locking rod 41 connected to the second reversing crank arm 38 is driven to move forward under the guidance of the locking rod guide 341 and is inserted into a hole where the round hole in the locking plate 11 is aligned with the round hole in the locking rod baffle 42, at this time, the front door 1 is closed, the rear door 2 cannot be opened, and the equipment can be operated by power transmission;

secondly, when the switch cabinet is changed from the running state to the maintenance state

After the power of the equipment is cut off, the front door 1 is opened firstly, the compression spring 39 on the second push rod 32 automatically resets to drive the second push rod 32 and the first push rod 31 to move outwards, the first push rod 31 extends out of the front door 1 and simultaneously drives the first reversing crank arm 37 arranged on the reversing fixing plate 34 to rotate, the second reversing crank arm 38 is driven to rotate by the reversing main shaft 36, the locking rod 41 connected to the second reversing crank arm 38 is driven to move backwards to leave a round hole, at the moment, the rear door 2 can be opened, and the equipment can be overhauled; meanwhile, the locking reset rod 43 is reset under the action of the locking reset spring 44, the locking reset rod 43 blocks the round hole on the locking rod baffle 42, the locking rod 41 cannot move forwards and is inserted into the round hole under the condition that the rear door 2 is opened, at the moment, the first push rod 31 and the second push rod 32 cannot move forwards, the requirement that the front door 1 cannot be closed is met, and the front door 1 cannot be closed.

The front door 1 and the rear door 2 of the switch cabinet are sequentially locked, when the switch cabinet is switched from the running state to the maintenance state, after the power failure of the switch cabinet, the front door 1 must be opened first, and then the rear door 2 can be opened, so that other electrified intervals are prevented from being mistakenly accessed; when the cubical switchboard is transported the state by the maintenance state, must close back door 2 earlier, then just can close qianmen 1, carry out the power transmission operation again, prevent that equipment operation back, personnel can also get into electrified cubical switchboard.

It is to be noted that, in the attached drawings or in the description, the implementation modes not shown or described are all the modes known by the ordinary skilled person in the field of technology, and are not described in detail. Furthermore, the above definitions of the various elements and methods are not limited to the specific structures, shapes, or configurations shown in the examples.

It is also noted that the illustrations herein may provide examples of parameters that include particular values, but that these parameters need not be exactly equal to the corresponding values, but may be approximated to the corresponding values within acceptable error tolerances or design constraints. Directional phrases used in the embodiments, such as those referring to "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., refer only to the orientation of the drawings and are not intended to limit the scope of the present application.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. A safe and reliable mechanical locking device for a front door and a rear door of a switch cabinet comprises a front door (1), a rear door (2), a transmission mechanism (3) and a locking component (4), and is characterized in that the rear door (2) is provided with a rear door locking plate (11), the rear door locking plate (11) is in limit connection with the locking component (4), and the locking component (4) comprises a locking rod (41);

the transmission mechanism (3) comprises a first push rod (31), a second push rod (32), a displacement fixing plate (33) and a reversing fixing plate (34), wherein the first push rod (31) is in transmission connection with the rear door locking plate (11) sequentially through the displacement fixing plate (33), the second push rod (32), the reversing fixing plate (34) and the locking rod (41).

2. A safe and reliable mechanical front and rear door locking device for a switch cabinet as claimed in claim 1, wherein the displacement fixing plate (33) is arranged on the side wall of the switch cabinet near the front door (1), the displacement fixing plate (33) is provided with a limiting block, the first push rod (31) is limited and fixed with the limiting block, one side of the first push rod (31) far from the front door (1) is rotationally fixed with a displacement change plate (35), and the other side of the displacement change plate (35) is rotationally connected with the second push rod (32).

3. The safe and reliable mechanical locking device for the front door and the rear door of the switch cabinet as claimed in claim 2, wherein a reversing main shaft (36) is arranged on the reversing fixing plate (34), a first reversing crank arm (37) is fixedly connected to the lower side of the reversing main shaft (36), a second reversing crank arm (38) is fixedly connected to the upper side of the reversing main shaft (36), the other end of the first reversing crank arm (37) is rotatably connected with the second push rod (32), and the other end of the second reversing crank arm (38) is rotatably connected with the locking rod (41).

4. A safe and reliable mechanical front and rear door locking device for switch cabinets according to claim 3, characterized in that two vertical guide slots are formed on the left and right sides of the fixing plate (34), a locking rod guide (341) is provided directly above the left guide slot, and a second push rod guide (342) is provided directly below the right guide slot.

5. A safe and reliable mechanical front and rear door locking device for a switch cabinet as claimed in claim 3, wherein the first reversing crank arm (37) is provided with a rectangular hole at the connection with the second push rod (32), and the second reversing crank arm (38) is provided with a rectangular hole at the connection with the locking lever (41).

6. The safe and reliable front and rear door mechanical locking device for the switch cabinet according to claim 5, characterized in that the locking assembly (4) further comprises a locking rod baffle (42), a locking reset rod (43) is arranged in the locking rod baffle (42), a locking reset spring (44) is arranged in the locking reset rod (43), a connecting plate (45) is connected to the side surface of the locking rod baffle (42), and the other end of the connecting plate (45) is in limit connection with the locking rod (41).

7. A safe and reliable switch cabinet front and rear door mechanical locking device according to claim 6, characterized in that the rear door locking plate (11) is provided with a circular hole, and the locking lever baffle (42) is provided with a circular hole at the same level as the locking lever (41).

8. A safe and reliable mechanical front and rear door locking device for a switchgear cabinet as claimed in claim 3, characterized in that the second push rod (32) is provided with two shutters, between which a compression spring (39) is provided.

9. A safe and reliable mechanical front and rear door locking device for switchgear cabinets as claimed in claim 1, characterized in that said front door (1) is provided with a stop at the contact with the first push rod (31).