CN220711818U - Linkage mechanism for preventing false door opening - Google Patents
Linkage mechanism for preventing false door opening Download PDFInfo
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- CN220711818U CN220711818U CN202322375382.3U CN202322375382U CN220711818U CN 220711818 U CN220711818 U CN 220711818U CN 202322375382 U CN202322375382 U CN 202322375382U CN 220711818 U CN220711818 U CN 220711818U
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- door
- explosion
- limiting
- rotating piece
- inner rotating
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- 230000007246 mechanism Effects 0.000 title claims abstract description 53
- 238000005452 bending Methods 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 abstract 1
- 230000008859 change Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- Switch Cases, Indication, And Locking (AREA)
Abstract
The utility model discloses a linkage mechanism for preventing false door opening, which comprises an explosion-proof shell and a door rotatably arranged on the explosion-proof shell, wherein an inner rotating piece and an outer rotating piece which synchronously rotates with the inner rotating piece are rotatably arranged on the explosion-proof shell; a limiting mechanism is arranged on the explosion-proof shell, and the limiting mechanism limits the rotation of the inner rotating member when the door is in an open state; the explosion-proof shell is also provided with a link mechanism driven by the inner rotating piece, the link mechanism is provided with a locking door hook, the door is provided with a shackle, and when the door is in a closed state, the locking door hook is hooked on the shackle; the dual security guarantee that the door can not be opened when the door is opened and the door can not be electrified when the door is opened is realized, the electrified door opening is avoided, and the security is improved.
Description
Technical Field
The utility model relates to the technical field of explosion-proof boxes of frequency converters, in particular to a linkage mechanism for preventing false door opening.
Background
The frequency converter comprises an explosion-proof shell and a door rotatably arranged on the explosion-proof shell, wherein the door and the explosion-proof shell are in a closed state and meet explosion-proof conditions, and a frequency converter core, a power switch and related electrical accessories are arranged in the explosion-proof shell. Under the internal power-on state, explosion protection can be ensured only by ensuring that the door is in a good closing state, and if the door is opened in the internal power-on state, a great hidden danger exists; thus, in practical applications, although the door is presented with "strictly prohibited live door opening", there are still cases where the live door opening is caused by negligence.
In order to solve the condition of opening the door with electricity, disclosed in chinese patent CN105118711a is a switch interlocking mechanism for quick-opening explosion-proof frequency converter, including interlocking mechanism, change over switch, card strip, flameproof housing, control the chamber door, be equipped with interlocking mechanism between the left and right chamber door of flameproof housing, the change over switch knob pivot of interlocking mechanism passes through the knob gear square hole between guide block and backing plate and is connected with the change over switch, the square shaft of the pivot end of change over switch knob is connected with the knob gear cooperation, the knob gear is connected with upper rack, lower rack meshing, the interlocking stretches out or the upper rack of indentation, lower rack other end respectively with control the left chamber door dog of fixing respectively on the chamber door, right chamber door dog cooperation position contact. The utility model can ensure that the door of the flameproof shell can be opened only when the power supply is turned off. The mechanism has the advantages of simple structure and high reliability, can realize the interlocking of a circuit and a box door, ensures the outage operation, and meets the outage requirement of the single-double quick-opening explosion-proof shell.
The above patent proposes that by implementing the power-off operation while opening the door, it is still possible that the reliable power-off operation is not implemented while opening the door, and there is a certain hidden danger, and further consideration is still required to avoid the risk of opening the door with electricity.
Disclosure of Invention
First technical problem
The utility model aims to provide a linkage mechanism for preventing false door opening, which realizes double safety guarantee that the door cannot be opened when the door is opened and the inside cannot be electrified when the door is opened, and avoids the problem of electrified door opening.
(II) technical scheme
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the linkage mechanism for preventing the false door opening comprises an explosion-proof shell and a door rotatably arranged on the explosion-proof shell, wherein an inner rotating piece and an outer rotating piece which synchronously rotates with the inner rotating piece are rotatably arranged on the explosion-proof shell, and a power switch which is driven by the inner rotating piece to realize the opening and the closing is arranged in the explosion-proof shell; a limiting mechanism is arranged on the explosion-proof shell, and the limiting mechanism limits the rotation of the inner rotating member when the door is in an open state; the explosion-proof shell is also provided with a connecting rod mechanism driven by the inner rotating piece, the connecting rod mechanism is provided with a locking door hook, a shackle is arranged on the door, and when the door is in a closed state, the locking door hook is hooked on the shackle.
Preferably, the limiting mechanism comprises a fixed block and a limiting block which are fixed on the explosion-proof shell and are arranged at intervals, a short rod is slidably arranged on the fixed block and the limiting block, a locking clamping block is arranged on the short rod, and a spring positioned between the fixed block and the locking clamping block is sleeved on the short rod; the spring pushes the locking clamping block to move and limit the rotation of the rotating piece.
Preferably, a limiting notch is arranged on the outer circumference of the inner rotating member, and a clamping groove matched with the limiting notch is arranged on the locking clamping block.
Preferably, the limiting notch is of a right-angle step structure.
Preferably, the inner rotating member is further provided with an arc-shaped strip hole for limiting the rotation range.
Preferably, the link mechanism comprises a square rod fixed on the inner rotating piece and a first link rod sleeved on the square rod, the first link rod penetrates through the limiting block and then is rotationally connected with a second link rod, and the second link rod is rotationally connected with a third link rod; two rotating shaft seats are arranged on the top plate of the explosion-proof shell at intervals, a rotating shaft is rotatably arranged on the rotating shaft seats, one end of the rotating shaft is fixed on the third connecting rod, and the other end of the rotating shaft is fixed with the locking door hook.
Preferably, the limiting block is provided with a sliding bar hole, and the first connecting rod penetrates through the sliding bar hole.
Preferably, the locking door hook comprises a body which is in threaded connection with the rotating shaft, a limiting plate with a bending structure is arranged on the body, and a limiting hook part is arranged on the limiting plate; when the body rotates, the limiting hook part stretches into the hook ring.
Preferably, the explosion-proof housing is provided with an indication part connected with the power switch.
Preferably, the outer rotating member is provided with a holding rod for pulling.
(III) beneficial effects
The limiting mechanism is used for stopping the inner rotating piece when the door is opened, and switching off the power switch, and the limiting mechanism is used for stopping the inner rotating piece when the door is closed, so that the power switch can be switched on; meanwhile, when the door is closed, the inner rotating piece is linked with the locking door hook through the connecting rod mechanism to lock with the shackle when rotating, the door is internally limited and cannot be opened, and the locking door hook can be separated from the shackle only when the inner rotating piece rotates along the direction of closing the power switch, so that the door can be opened;
therefore, through double safety guarantee measures, the situation that the power switch cannot be started when the door is opened and the door cannot be opened after the power switch is started when the door is closed is realized, the limiting condition for opening the door is improved, and the explosion-proof safety performance is improved.
Drawings
FIG. 1 is a schematic view of the internal partial structure of an embodiment of the present utility model;
FIG. 2 is a schematic view of an external partial structure of an embodiment of the present utility model;
FIG. 3 is a schematic view of an inner rotor according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram of a locking latch according to an embodiment of the present utility model;
FIG. 5 is a schematic view of a structure of a locking hook according to an embodiment of the present utility model;
in fig. 1 to 5, the correspondence between the component names or lines and the drawing numbers is:
explosion-proof housing 1, door 2, inner rotating member 3, limit notch 30, arc-shaped bar hole 31, outer rotating member 4, power switch 5, limit mechanism 6, fixed block 61, limit block 62, sliding bar hole 620, short bar 63, locking block 64, engagement groove 640, spring 65, link mechanism 7, square bar 71, first link 72, second link 73, third link 74, rotation shaft seat 75, rotation shaft 76, locking door hook 8, body 81, limit plate 82, limit hook 83, shackle 9, indication portion 10, and grip lever 11.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1 to 5, an embodiment of the present utility model proposes a linkage mechanism for preventing a door 2 from being opened by mistake, which includes an explosion-proof housing 1 and a door 2 rotatably mounted on the explosion-proof housing 1, wherein the door 2 is mounted on the explosion-proof housing 1 through a hinge, and the door 2 can be opened under the condition of satisfying explosion protection; an inner rotating member 3 and an outer rotating member 4 which rotates synchronously with the inner rotating member 3 are rotatably mounted on the explosion-proof housing 1, a power switch 5 which is driven by the inner rotating member 3 to realize opening and closing is mounted in the explosion-proof housing 1, and when the outer rotating member 4 rotates, the inner rotating member 3 synchronously rotates to control the power switch 5 to realize opening and closing; in order to satisfy the requirement that the power switch 5 is turned off in the opened state of the door 2, or that the door 2 cannot be turned on when the power switch 5 is turned on, the consideration of satisfying the explosion-proof safety is achieved, and the double safety guarantee is satisfied.
Specifically, the explosion-proof housing 1 is provided with the limiting mechanism 6, when the door 2 is in an open state, the limiting mechanism 6 limits the inner rotating member 3 to rotate, namely, when the door 2 is in an open state, the limiting mechanism 6 stops the rotation of the inner rotating member 3, and at the moment, the power switch 5 cannot be turned on, so that the first heavy safety guarantee is realized.
Meanwhile, a connecting rod mechanism 7 driven by the inner rotating piece 3 is further arranged on the explosion-proof shell 1, a locking door hook 8 is arranged on the connecting rod mechanism 7, a shackle 9 is arranged on the door 2, and when the door 2 is in a closed state, the locking door hook 8 is hooked on the shackle 9; namely, when the door 2 is closed (at the moment, the limiting mechanism 6 does not limit the rotation of the inner rotating member 3 any more), after the inner rotating member 3 is driven to rotate and turn on the power switch 5, the door 2 is locked by driving the locking door hook 8 and the shackle 9 to be matched with each other through the connecting rod mechanism 7, and the door 2 cannot be opened; the door hook 8 is disengaged from the shackle 9 only when the inner rotating member 3 is rotated in the direction of closing the power switch 5, and the door 2 can be opened, thereby achieving a second safety guarantee.
Specifically, the limiting mechanism 6 includes a fixed block 61 and a limiting block 62 fixed on the explosion-proof housing 1 and arranged at intervals, a short rod 63 is slidably mounted on the fixed block 61 and the limiting block 62, a locking clamping block is mounted on the short rod 63, a spring 65 located between the fixed block 61 and the locking clamping block is sleeved on the short rod 63, and the spring 65 pushes the locking clamping block to move and limits the rotation of the inner rotating member 3; after the door 2 is opened, the short lever 63 is pushed by the spring 65 to move with the locking block to stop the rotation of the inner rotator 3, and when the door 2 is closed, the short lever 63 is pushed to move and compress the spring 65 to release the locking block from the inner rotator 3, and at this time, the inner rotator 3 can be rotated.
Meanwhile, a limit notch 30 is arranged on the outer circumference of the inner rotating member 3, a clamping groove 640 matched with the limit notch 30 is arranged on the locking clamping block, the limit notch 30 is of a right-angle step structure, and good limit stop can be realized due to the right-angle step structure when the locking notch 640 moves and is matched with the limit notch 30.
Specifically, the rotation range of the opening and closing two rotation positions of the inner rotation member 3 is limited, so that only two positions can be ensured to be positioned, and the inner rotation member 3 is also provided with an arc-shaped strip hole 31 for limiting the rotation range, and the angle is 90 degrees.
The linkage between the inner rotating member 3 and the locking door hook 8 is realized through a link mechanism 7, the link mechanism 7 comprises a square rod 71 fixed on the inner rotating member 3 and a first link 72 sleeved on the square rod 71, the first link 72 passes through the limiting block 62 and then is rotationally connected with a second link 73, and the second link 73 is rotationally connected with a third link 74; simultaneously, two rotating shaft seats 75 are arranged on the top plate of the explosion-proof shell 1 at intervals, a rotating shaft 76 is rotatably arranged on the rotating shaft seat 75, one end of the rotating shaft 76 is fixed on the third connecting rod 74, and the other end of the rotating shaft 76 is fixed with the locking door hook 8; therefore, the two rotation directions with axes which are mutually perpendicular in space are linked under the action of the link mechanism 7, specifically, the square rod 71 is used for carrying the first link 72 to rotate, the first link 72 pulls the second link 73 to longitudinally move, the third link 74 pulls the rotating shaft 76 to rotate, and therefore the angle rotation of the locking door hook 8 is achieved, and the linkage process is completed.
The locking door hook 8 comprises a main body 81 in threaded connection with the rotating shaft 76, a limiting plate 82 in a bending structure is arranged on the main body 81, a limiting hook portion 83 is arranged on the limiting plate 82, and when the main body 81 rotates, the limiting hook portion 83 stretches into the shackle 9; the limiting hook 83 is used for ensuring that the hook ring 9 can be extended to form reliable limiting, and the main body 81 is connected to the rotating shaft 76 in a threaded manner, so that the position and the angle can be adjusted.
In order to make the first link 72 move in a limited manner during the rotation angle, specifically, a sliding bar hole 620 is formed on the limiting block 62, and the first link 72 passes through the sliding bar hole 620, so that the first link 72 can only slide in the sliding bar hole 620.
Specifically, the explosion-proof housing 1 is provided with an indication unit 10 connected to the power switch 5, and indicates the opening/closing of the power switch 5.
Meanwhile, the outer rotating member 4 is provided with a holding rod 11 for pulling, so that the outer rotating member 4 can be conveniently driven to rotate through the holding rod 11.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The utility model provides a prevent that mistake from opening door's link gear, includes explosion-proof housing and rotates the door of installing on explosion-proof housing, its characterized in that:
an inner rotating piece and an outer rotating piece which rotates synchronously with the inner rotating piece are rotatably arranged on the explosion-proof shell, and a power switch which is driven by the inner rotating piece to realize opening and closing is arranged in the explosion-proof shell;
a limiting mechanism is arranged on the explosion-proof shell, and the limiting mechanism limits the rotation of the inner rotating member when the door is in an open state;
the explosion-proof shell is also provided with a connecting rod mechanism driven by the inner rotating piece, the connecting rod mechanism is provided with a locking door hook, a shackle is arranged on the door, and when the door is in a closed state, the locking door hook is hooked on the shackle.
2. A linkage mechanism for preventing false door opening as claimed in claim 1, wherein: the limiting mechanism comprises a fixed block and a limiting block which are fixed on the explosion-proof shell and are arranged at intervals, a short rod is slidably arranged on the fixed block and the limiting block, a locking clamping block is arranged on the short rod, and a spring positioned between the fixed block and the locking clamping block is sleeved on the short rod;
the spring pushes the locking clamping block to move and limit the rotation of the rotating piece.
3. A linkage mechanism for preventing false door opening as claimed in claim 2, wherein: the inner rotating piece is characterized in that a limiting notch is formed in the outer circumference of the inner rotating piece, and a clamping groove matched with the limiting notch is formed in the locking clamping block.
4. A linkage mechanism for preventing false door opening as claimed in claim 3, wherein: the limiting notch is of a right-angle step structure.
5. The interlocking mechanism for preventing false door opening according to claim 4, wherein: the inner rotating member is also provided with an arc-shaped strip hole for limiting the rotation range.
6. A linkage mechanism for preventing false door opening according to any one of claims 2 to 5, wherein: the connecting rod mechanism comprises a square rod fixed on the inner rotating piece and a first connecting rod sleeved on the square rod, the first connecting rod penetrates through the limiting block and then is rotationally connected with a second connecting rod, and the second connecting rod is rotationally connected with a third connecting rod;
two rotating shaft seats are arranged on the top plate of the explosion-proof shell at intervals, a rotating shaft is rotatably arranged on the rotating shaft seats, one end of the rotating shaft is fixed on the third connecting rod, and the other end of the rotating shaft is fixed with the locking door hook.
7. The interlocking mechanism for preventing false door opening according to claim 6, wherein: the limiting block is provided with a sliding bar hole, and the first connecting rod penetrates through the sliding bar hole.
8. The interlocking mechanism for preventing false door opening according to claim 6, wherein: the locking door hook comprises a body which is in threaded connection with the rotating shaft, a limiting plate with a bending structure is arranged on the body, and a limiting hook part is arranged on the limiting plate;
when the body rotates, the limiting hook part stretches into the hook ring.
9. The interlocking mechanism for preventing false door opening according to claim 8, wherein: and the explosion-proof shell is provided with an indicating part connected with the power switch.
10. The interlocking mechanism for preventing false door opening according to claim 9, wherein: the outer rotating piece is provided with a holding rod for pulling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322375382.3U CN220711818U (en) | 2023-09-01 | 2023-09-01 | Linkage mechanism for preventing false door opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322375382.3U CN220711818U (en) | 2023-09-01 | 2023-09-01 | Linkage mechanism for preventing false door opening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220711818U true CN220711818U (en) | 2024-04-02 |
Family
ID=90448576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322375382.3U Active CN220711818U (en) | 2023-09-01 | 2023-09-01 | Linkage mechanism for preventing false door opening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220711818U (en) |
-
2023
- 2023-09-01 CN CN202322375382.3U patent/CN220711818U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |