CN219809035U - Automatic locking device for air door under underground air-break state - Google Patents
Automatic locking device for air door under underground air-break state Download PDFInfo
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- CN219809035U CN219809035U CN202321297998.7U CN202321297998U CN219809035U CN 219809035 U CN219809035 U CN 219809035U CN 202321297998 U CN202321297998 U CN 202321297998U CN 219809035 U CN219809035 U CN 219809035U
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- 230000000694 effects Effects 0.000 abstract description 13
- 230000000903 blocking effect Effects 0.000 description 9
- 238000009423 ventilation Methods 0.000 description 7
- 239000003245 coal Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
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Abstract
The utility model discloses an automatic locking device for an air door in an underground air-break state. The device of the utility model comprises: the first locking cylinder is connected with one door body of the first air door, the second locking cylinder is connected with one door body of the second air door, the first switching valve is connected with a first air port of the first cylinder and a first manual exhaust valve, and the first manual exhaust valve is connected with a seventh air port of the second locking cylinder; the second switching valve is connected with a second air port of the first air cylinder and a second manual exhaust valve, and the second manual exhaust valve is connected with an eighth air port of the second locking air cylinder; the fourth switching valve is connected with a fourth air port of the second air cylinder and a fourth manual exhaust valve, and the fourth manual exhaust valve is connected with a sixth air port of the first locking air cylinder; the third switching valve is connected with a third air port of the second cylinder and a third manual exhaust valve, and the third manual exhaust valve is connected with a fifth air port of the first locking cylinder. The utility model can realize self-locking effect by using fewer parts and ensure self-locking stability.
Description
Technical Field
The utility model relates to the technical field of coal mine ventilation systems, in particular to an automatic locking device for an air door under an underground air-break state.
Background
In underground coal mine, pedestrians and travelling crane can influence a roadway ventilation system, if two air doors in the roadway are simultaneously opened, the air inlet air flow is short-circuited, partial areas and working surfaces are in a breeze or no-wind state, gas accumulation overrun is caused, and life safety of workers is threatened.
At present, most of air doors of underground ventilation systems of coal mines in China are in a single-door or double-door mode, and the air doors are automatically opened and closed through taking an air cylinder as a power source, but an air source of the air cylinder needs to be stably input, if the air source is interrupted due to special conditions, accidents or unreliability, and the underground air source is in an air-break state, the air doors cannot be automatically opened and closed, only manual door opening is performed, but the locking effect of two air doors cannot be achieved under the condition of manual door opening, and ventilation short circuit is further caused.
The prior art scheme adopts mechanical mode to realize the air door locking effect more, for example, the colliery air door mechanical automatic locking device of application publication number CN 103696796A, including wire rope, a pair of fixed pulley, structural frame, a pair of solid weight and self-locking pin, the fixed pulley sets up in structural frame upper portion both sides, the air door connecting rod is connected to wire rope one end, the other end passes fixed pulley fixed suspension and connects solid weight, self-locking pin lock locates in the middle of two solid weights in frame middle part, utilize the weight dead weight, through self-locking pin with wire rope taut, prevent another air door from opening, reach the self-locking effect, this mechanical structure contains too much spare part, need the close fit of each spare part, just can realize the self-locking effect, although be in under the state of cutting off the air in the pit, this locking device still can play the effect, but if damage appears in a certain spare part, just unable auto-lock causes the ventilation short circuit, self-locking structure's stability can not be guaranteed.
If the application publication number is CN 102135007A, through a triangle-shaped steel plate piece and two sliding bodies that take the counter weight, two sliding bodies are connected with the air door through wire rope respectively, first air door is opened, drive first sliding body and rise the collision locking piece, the locking piece turns to the second sliding body, restrict the second sliding body and rise, and then prevent that the second air door from opening simultaneously, although be in down-hole under the state of cutting off the air, this kind of mode that realizes the auto-lock effect through mechanical structure still contains too many spare part, self-locking stability can't be guaranteed, if damage appears in a certain spare part, just unable auto-lock causes ventilation short circuit.
In order to solve the technical problems, the utility model provides an automatic locking device for an air door in an underground air-break state.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, and provides an automatic locking device for an air door in an underground air-break state, which can realize a self-locking effect by using fewer parts and ensure the stability of self locking.
In order to achieve the above object, the present utility model proposes the following technical scheme:
an automatic locking device for an air door in an underground air-break state comprises a first air cylinder, a second air cylinder, a first locking air cylinder, a second locking air cylinder, a first locking control box and a second locking control box;
the first air door comprises two door bodies which are linked and controlled to be opened and closed by a first air cylinder; the first air door is in an open state, the second air port is out, the first air cylinder is in a shortened state, and the first air door is in a closed state;
the second air door comprises two door bodies which are linked and controlled to be opened and closed by a second air cylinder; when the fourth air port is used for air inlet and the third air port is used for air outlet, the second air cylinder is in an extension state, and the second air door is in an opening state; when the third air port of the second air cylinder is in air inlet and the fourth air port is out of air, the second air cylinder is in a shortened state, and the second air door is in a closed state;
the first locking cylinder is connected with one door body of the first air door, a bayonet matched with the first locking cylinder is arranged above the door body, when the first locking cylinder is in an extending state, a cylinder rod extends into the bayonet, so that the door bodies cannot be opened, and the two door bodies are in a linkage state, so that the first air door cannot be opened; when the fifth air port of the first locking cylinder is used for air inlet and the sixth air port is used for air outlet, the first locking cylinder is in an extension state, and the first air door is in a locking state; when the sixth air port of the first locking cylinder is used for air inlet and the fifth air port is used for air outlet, the first locking cylinder is in a shortened state, and the first air door is in an openable state;
the second locking cylinder is connected with one door body of the second air door, a bayonet matched with the second locking cylinder is arranged above the door body, when the second locking cylinder is in an extension state, a cylinder rod extends into the bayonet, so that the door bodies cannot be opened, and the two door bodies are in a linkage state, so that the second air door cannot be opened; the second locking cylinder is in an extension state when the eighth air port of the second locking cylinder is in air inlet and the seventh air port is out of air, and the second air door is in a locking state; when the seventh air port of the second locking cylinder is in air inlet and the eighth air port is out of air, the second locking cylinder is in a shortened state, and the second air door is in an openable state;
the first locking control box comprises a first switching valve, a second switching valve, a first manual exhaust valve and a second manual exhaust valve;
the second locking control box comprises a third switching valve, a fourth switching valve, a third manual exhaust valve and a fourth manual exhaust valve;
the first air port of the first air cylinder is connected with a first switching valve, the first switching valve is connected with a first manual exhaust valve, and the first manual exhaust valve is connected with a seventh air port of the second locking air cylinder;
the second air port of the first air cylinder is connected with a second switching valve, the second switching valve is connected with a second manual exhaust valve, and the second manual exhaust valve is connected with an eighth air port of the second locking air cylinder;
the fourth air port of the second air cylinder is connected with a fourth switching valve, the fourth switching valve is connected with a fourth manual exhaust valve, and the fourth manual exhaust valve is connected with the sixth air port of the first locking air cylinder;
the third air port of the second air cylinder is connected with a third switching valve, the third switching valve is connected with a third manual exhaust valve, and the third manual exhaust valve is connected with the fifth air port of the first locking air cylinder;
the first switching valve, the second switching valve, the third switching valve and the fourth switching valve are all connected with a total air source.
Preferably, a control box and a linkage control box are arranged between the total air source and the first cylinder and the second cylinder;
the total air source is respectively connected with a first control box and a second control box, the first control box is connected with a first linkage control box, the second control box is connected with a second linkage control box, and an interlocking linkage line and an unlocking linkage line are arranged between the first linkage control box and the second linkage control box;
under the normal air supply state, the total air source conveys the air source to the first air cylinder through the first control box and the first linkage control box, and the total air source conveys the air source to the second air cylinder through the second control box and the second linkage control box;
an opening, closing, interlocking and unlocking operation control program is arranged in the first control box, the first linkage control box is required to be controlled when each program is executed, the first linkage control box and the second linkage control box are required to be in linkage control when interlocking and unlocking instructions are executed, and the first linkage control box sends any interlocking or unlocking instruction to the second linkage control box according to the instructions of the first control box; the second linkage control box executes the second linkage control box, the interlocking instruction prohibits the air source from entering the second cylinder from the fourth air port and simultaneously the air source from entering the second cylinder from the third air port, the cylinder rod is kept in a shortened state, namely the second air door is prohibited from opening, the unlocking instruction resumes the free input of the air source and simultaneously stops the air supply from the third air port to the second cylinder, namely the second air door can be opened;
when executing opening and closing instructions, the first linkage control box controls the flow direction of the air source, the opening instruction is executed, namely the air source enters the first air cylinder through the first switching valve and the first air port, and the closing instruction is executed, namely the air source enters the first air cylinder through the second switching valve and the second air port; normally, the opening, interlocking, closing and unlocking are sequentially carried out;
an opening, closing, interlocking and unlocking operation control program is arranged in the second control box, the second linkage control box is required to be controlled when each program is executed, the second linkage control box and the first linkage control box are required to be in linkage control when the interlocking and unlocking instructions are executed, and the second linkage control box sends any interlocking or unlocking instruction to the first linkage control box according to the instructions of the second control box; the first linkage control box executes the first linkage control box, the interlocking instruction prohibits the air source from entering the first air cylinder from the first air port and simultaneously prohibits the air source from entering the first air cylinder from the second air port, the cylinder rod is kept in a shortened state, namely the first air door is prohibited from opening, the unlocking instruction resumes the free input of the air source and simultaneously stops the air supply from the second air port to the first air cylinder, namely the first air door can be opened;
when executing the opening and closing instructions, the second linkage control box controls the flow direction of the air source, the opening instruction is executed, namely the air source enters the second air cylinder through the fourth switching valve and the fourth air port, and the closing instruction is executed, namely the air source enters the second air cylinder through the third switching valve and the third air port; typically, the opening-interlocking-closing-unlocking is performed sequentially.
Specifically, under normal air supply conditions:
the first switching valve internal channel is used for communicating the first air port of the first air cylinder with a total air source; the second switching valve internal channel is used for communicating the second air port of the first air cylinder with the total air source; the internal channel of the third switching valve is used for communicating the third air port of the second air cylinder with a total air source; the internal channel of the fourth switching valve is used for communicating the fourth air port of the second air cylinder with a total air source;
when the first air door needs to be opened, the first control box sends an opening instruction to the first linkage control box, and the total air source is used for conveying the air source to the first air port of the first air cylinder, so that the cylinder rod of the first air cylinder is extended, and the first air door is opened; at the moment, the first control box sends an interlocking instruction to the first linkage control box, the first linkage control box feeds back the instruction to the second linkage control box through the interlocking linkage line, and the second linkage control box prohibits the second air door from opening;
when the first air door needs to be closed, the first control box sends a closing instruction to the first linkage control box, and then the total air source transmits the air source to the second air port of the first air cylinder, so that the cylinder rod of the first air cylinder is shortened, and the first air door is closed; at the moment, the first control box sends an unlocking instruction to the first linkage control box, the first linkage control box feeds back the instruction to the second linkage control box through the unlocking linkage line, and the second linkage control box unblocks the second air door;
when the second air door needs to be opened, the second control box sends an opening instruction to the second linkage control box, and then the total air source transmits the air source to the fourth air port of the second air cylinder, so that the cylinder rod of the second air cylinder is extended, and the second air door is opened; at the moment, the second control box sends an interlocking instruction to the second linkage control box, the second linkage control box feeds back the instruction to the first linkage control box through the interlocking linkage line, and the first linkage control box prohibits the first air door from opening;
when the second air door needs to be closed, the second control box sends a closing instruction to the second linkage control box, and then the total air source transmits the air source to the third air port of the second air cylinder, so that the cylinder rod of the second air cylinder is shortened, and the second air door is closed; at the moment, the second control box sends an unlocking instruction to the second linkage control box, the second linkage control box feeds back the instruction to the first linkage control box through the unlocking linkage line, and the first linkage control box unblocks the first air door;
under the condition of gas interruption:
the internal channel of the first switching valve is switched, so that the first air port of the first cylinder is connected with the seventh air port of the second locking cylinder through the first manual exhaust valve;
the internal channel of the second switching valve is switched, so that the second air port of the first air cylinder is connected with the eighth air port of the second locking air cylinder through the second manual exhaust valve;
the internal channel of the third switching valve is switched, so that the third air port of the second cylinder is connected with the fifth air port of the first locking cylinder through the third manual exhaust valve;
the internal channel of the fourth switching valve is switched, so that the fourth air port of the second air cylinder is connected with the sixth air port of the first locking air cylinder through a fourth manual exhaust valve;
at the moment, the first air door or the second air door can be opened manually, when the first air door is opened, the cylinder rod of the first air cylinder is stretched and prolonged manually, and gas stored in the first air cylinder enters the second locking air cylinder through the second air port, the second switching valve, the second manual exhaust valve and the eighth air port, so that the cylinder rod of the second locking air cylinder is stretched, the second air door is controlled to be in a locking state, and cannot be opened, and a locking effect is achieved;
in the process, the second manual exhaust valve can perform manual exhaust according to the difference of the gas containing amounts of the first cylinder and the second locking cylinder so as to ensure safety and stability;
after passing a pedestrian or a travelling crane, manually closing the first air door, wherein the cylinder rod of the first air cylinder is manually shortened, and air stored in the first air cylinder enters the second locking air cylinder through the first air port, the first switching valve, the first manual exhaust valve and the seventh air port, so that the cylinder rod of the second locking air cylinder is shortened, the blocking of the second air door is further released, and the second air door can be opened;
similarly, after the second air door is opened, the cylinder rod of the second air cylinder is manually stretched and prolonged, and the air stored in the second air cylinder enters the first locking air cylinder through the third air port, the third switching valve, the third manual exhaust valve and the fifth air port, so that the cylinder rod of the first locking air cylinder is stretched, the first air door is controlled to be in a locking state and cannot be opened, and a locking effect is achieved;
in the process, the third manual exhaust valve can perform manual exhaust according to the difference of the gas containing amounts of the second cylinder and the first locking cylinder so as to ensure safety and stability;
after the pedestrian or the travelling crane passes through, the second air door is manually closed, at the moment, the cylinder rod of the second air cylinder is manually shortened, and air stored in the second air cylinder enters the first locking air cylinder through the fourth air port, the fourth switching valve, the fourth manual exhaust valve and the sixth air port, so that the cylinder rod of the first locking air cylinder is shortened, the locking of the first air door is further released, and the first air door can be opened.
The utility model has the beneficial effects that:
according to the utility model, the switching valve, the manual exhaust valve and the locking cylinder are arranged to form a locking loop, and the locking and unlocking of the other air door are triggered by manually opening and closing the air door under the condition of air failure, so that the locking state of the air door under the condition of air failure is ensured, and two air doors are prevented from being simultaneously opened to form a ventilation short circuit;
according to the utility model, the manual exhaust valve is arranged in the closed loop, so that the manual exhaust can be performed, and the safety and stability of the whole gas path pipeline are further ensured;
the utility model forms the locking device by arranging the switching valve, the manual exhaust valve and the locking cylinder, has fewer parts, does not need a complex mechanical structure, is more stable than the mechanical structure, and is simpler to install and use.
By adopting the scheme, the self-locking device can realize the self-locking effect by using fewer parts and ensure the stability of self locking.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a simple structure of a locking device in an air-break state of the present utility model.
Fig. 2 is a schematic view of the overall simple structure of the present utility model in the air-break state and in the normal air-supply state.
In the figure, a first cylinder, a second cylinder, a first locking cylinder, a second locking cylinder, a first locking control box and a second locking control box are respectively arranged in the figures, wherein the first locking control box is a first locking control box, the second locking control box is a second locking control box;
11-a first gas port, 12-a second gas port; 21-third port, 22-fourth port;
31-fifth port, 32-sixth port; 41-seventh port, 42-eighth port;
51-first switching valve, 52-second switching valve, 53-first manual exhaust valve, 54-second manual exhaust valve
61-third switching valve, 62-third manual exhaust valve, 63-fourth switching valve, 64-fourth manual exhaust valve;
7-total air source, 8-first control box, 9-second control box, 10-first linkage control box, 11-second linkage control box, 12-interlocking linkage line, 13-unlocking linkage line.
Description of the embodiments
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
As shown in fig. 1, an automatic locking device for an air door in a downhole air-break state comprises a first air cylinder 1, a second air cylinder 2, a first locking air cylinder 3, a second locking air cylinder 4, a first locking control box 5 and a second locking control box 6;
the first air door comprises two door bodies which are linked and controlled to be opened and closed by a first air cylinder 1; when the first air port 11 of the first air cylinder 1 is in an extended state and the second air port 12 is out of air, the first air door is in an opened state, when the second air port 12 is out of air and the first air port 11 is out of air, the first air cylinder 1 is in a shortened state, and the first air door is in a closed state;
the second air door comprises two door bodies which are linked and controlled to be opened and closed by a second air cylinder 2; when the fourth air port 22 is used for air intake and the third air port 21 is used for air exhaust, the second air cylinder 2 is in an extension state, and the second air door is in an opening state; when the third air port 21 of the second air cylinder 2 is in air inlet and the fourth air port 22 is out of air, the second air cylinder 2 is in a shortened state, and the second air door is in a closed state;
the first locking cylinder 3 is connected with one door body of the first air door, a bayonet matched with the first locking cylinder 3 is arranged above the door body, when the first locking cylinder 3 is in an extending state, a cylinder rod extends into the bayonet, so that the door body cannot be opened, and the two door bodies are in a linkage state, so that the first air door cannot be opened; when the fifth air port 31 of the first locking cylinder 3 is used for air inlet and the sixth air port 32 is used for air outlet, the first locking cylinder 3 is in an extension state, and the first air door is in a locking state; when the sixth air port 32 of the first locking cylinder 3 is in air inlet and the fifth air port 31 is out of air, the first locking cylinder is in a shortened state, and the first air door is in an openable state;
the second locking cylinder 4 is connected with one door body of the second air door, a bayonet matched with the second locking cylinder 4 is arranged above the door body, when the second locking cylinder 4 is in an extension state, a cylinder rod extends into the bayonet, so that the door body cannot be opened, and the two door bodies are in a linkage state, so that the second air door cannot be opened; the second locking cylinder 4 is in an extension state when the eighth air port 42 of the second locking cylinder 4 is in air inlet and the seventh air port 41 is out of air, and the second air door is in a locking state; when the seventh air port 41 of the second locking air cylinder 4 is in air inlet and the eighth air port 42 is out of air, the second locking air cylinder 4 is in a shortened state, and the second air door is in an openable state;
the first locking control box 5 comprises a first switching valve 51, a second switching valve 52, a first manual exhaust valve 53 and a second manual exhaust valve 54;
the second blocking control box 6 comprises a third switching valve 61, a fourth switching valve 63, a third manual exhaust valve 62 and a fourth manual exhaust valve 64;
the first port 11 of the first cylinder 1 is connected to a first switching valve 51, the first switching valve 51 is connected to a first manual exhaust valve 53, and the first manual exhaust valve 53 is connected to the seventh port 41 of the second blocking cylinder 4;
the second port 12 of the first cylinder 1 is connected to the second switching valve 52, the second switching valve 52 is connected to the second manual exhaust valve 54, and the second manual exhaust valve 54 is connected to the eighth port 42 of the second blocking cylinder 4;
the fourth port 22 of the second cylinder 2 is connected to a fourth switching valve 63, the fourth switching valve 63 is connected to a fourth manual exhaust valve 64, and the fourth manual exhaust valve 64 is connected to the sixth port 32 of the first blocking cylinder 3;
the third gas port 21 of the second cylinder 2 is connected with a third switching valve 61, the third switching valve 1 is connected with a third manual exhaust valve 62, and the third manual exhaust valve 62 is connected with the fifth gas port 31 of the first locking cylinder 3;
the first switching valve 51, the second switching valve 52, the third switching valve 61 and the fourth switching valve 63 are all connected to the total air supply.
As shown in fig. 2, a control box and a linkage control box are arranged between the total air source and the first air cylinder 1 and the second air cylinder 2;
the total air source is respectively connected with a first control box 8 and a second control box 9, the first control box 8 is connected with a first linkage control box 10, the second control box 9 is connected with a second linkage control box 11, and an interlocking linkage line 12 and an unlocking linkage line 13 are arranged between the first linkage control box 10 and the second linkage control box 11;
in a normal air supply state, the total air source is used for conveying the air source to the first air cylinder 1 through the first control box 8 and the first linkage control box 10, and the total air source is used for conveying the air source to the second air cylinder 2 through the second control box 9 and the second linkage control box 11;
an opening, closing, interlocking and unlocking operation control program is arranged in the first control box 8, the first linkage control box 10 is required to be controlled when each program is executed, the first linkage control box 10 and the second linkage control box 11 are required to be in linkage control when interlocking and unlocking instructions are executed, and the first linkage control box 11 sends any interlocking or unlocking instruction to the second linkage control box 11 according to the instruction of the first control box 8; the second linkage control box 11 executes the linkage instruction, namely, the gas source is forbidden to enter the second cylinder 2 from the fourth gas port 22 and enter the second cylinder 2 from the third gas port 21, the cylinder rod is kept in a shortened state, namely, the second air door is forbidden to be opened, the unlocking instruction is used for recovering the free input of the gas source and stopping the gas supply from the third gas port 21 to the second cylinder 2, namely, the second air door can be opened;
when executing opening and closing instructions, the first linkage control box 10 controls the flow direction of the air source, the opening instructions are executed, namely the air source enters the first air cylinder 1 through the first switching valve 51 and the first air port 11, and the closing instructions are executed, namely the air source enters the first air cylinder 1 through the second switching valve 52 and the second air port 12; normally, the opening, interlocking, closing and unlocking are sequentially carried out;
an opening, closing, interlocking and unlocking operation control program is arranged in the second control box 9, the second linkage control box 11 is required to be controlled when each program is executed, the second linkage control box 11 is required to be in linkage control with the first linkage control box 10 when the interlocking and unlocking instructions are executed, and the second linkage control box 11 sends any interlocking or unlocking instruction to the first linkage control box 10 according to the instructions of the second control box 9; the first linkage control box 10 executes the interlocking instruction, namely, the air source is prohibited from entering the first air cylinder 1 from the first air port 11 and the air source is prohibited from entering the first air cylinder 1 from the second air port 12, the cylinder rod is kept in a shortened state, namely, the first air door is prohibited from being opened, the unlocking instruction is a free input of the air source is restored, and the air source is stopped from being supplied to the first air cylinder 1 from the second air port 12, namely, the first air door can be opened;
when executing the opening and closing instructions, the second linkage control box 11 controls the flow direction of the air source, the opening instruction is executed, namely the air source enters the second air cylinder 2 through the fourth switching valve 63 and the fourth air port 22, and the closing instruction is executed, namely the air source enters the second air cylinder 2 through the third switching valve 61 and the third air port 21; typically, the opening-interlocking-closing-unlocking is performed sequentially.
Specifically, under normal air supply conditions:
the first switching valve 51 has an internal passage communicating the first air port 11 of the first cylinder 1 with the total air source; the second switching valve 52 has an internal passage for communicating the second port 12 of the first cylinder 1 with the total air source; the third switching valve 61 has an internal passage for communicating the third port 21 of the second cylinder 2 with the total air source; the internal channel of the fourth switching valve 63 communicates the fourth air port 22 of the second cylinder 2 with the total air source;
when the first air door needs to be opened, the first control box 8 sends an opening instruction to the first linkage control box 10, and then the total air source is used for conveying the air source to the first air port 11 of the first air cylinder 1, so that the cylinder rod of the first air cylinder 1 is extended, and the first air door is opened; at this time, the first control box 8 sends an interlocking instruction to the first linkage control box 10, the first linkage control box 10 feeds back the instruction to the second linkage control box 11 through the interlocking linkage line 12, and the second linkage control box 11 prohibits the second air door from opening;
when the first air door needs to be closed, the first control box 8 sends a closing instruction to the first linkage control box 9, and then the total air source is used for conveying the air source to the second air port 12 of the first air cylinder 1, so that the cylinder rod of the first air cylinder 1 is shortened, and the first air door is closed; at this time, the first control box 8 sends an unlocking instruction to the first linkage control box 10, the first linkage control box 10 feeds back the instruction to the second linkage control box 11 through the unlocking linkage line 13, and the second linkage control box 11 unblocks the second air door;
when the second air door needs to be opened, the second control box 9 sends an opening instruction to the second linkage control box 11, and then the total air source is used for conveying the air source to the fourth air port 22 of the second air cylinder 2, so that the cylinder rod of the second air cylinder 2 is extended, and the second air door is opened; at this time, the second control box 9 sends an interlocking instruction to the second linkage control box 11, the second linkage control box 11 feeds back the instruction to the first linkage control box 10 through the interlocking linkage line 12, and the first linkage control box 10 prohibits the first air door from opening;
when the second air door needs to be closed, the second control box 9 sends a closing instruction to the second linkage control box 11, and then the total air source is used for conveying the air source to the third air port 21 of the second air cylinder 2, so that the cylinder rod of the second air cylinder 2 is shortened, and the second air door is closed; at this time, the second control box 9 sends an unlocking instruction to the second linkage control box 11, the second linkage control box 11 feeds back the instruction to the first linkage control box 10 through the unlocking linkage line 13, and the first linkage control box 10 unblocks the first air door;
under the condition of gas interruption:
the internal passage of the first switching valve 51 is switched so that the first port 11 of the first cylinder 1 is connected to the seventh port 41 of the second blocking cylinder 4 via the first manual exhaust valve 51;
the internal passage of the second switching valve 52 is switched so that the second port 12 of the first cylinder 1 is connected to the eighth port 42 of the second blocking cylinder 4 via the second manual exhaust valve 52;
the internal passage of the third switching valve 61 is switched so that the third port 21 of the second cylinder 2 is connected to the fifth port 31 of the first latching cylinder 3 via the third manual exhaust valve 63;
the internal passage of the fourth switching valve 63 is switched so that the fourth port 22 of the second cylinder 2 is connected to the sixth port 32 of the first latching cylinder 3 via the fourth manual exhaust valve 63;
at this time, the first air door or the second air door can be opened manually, when the first air door is opened, the cylinder rod of the first air cylinder 1 is stretched and prolonged manually, and the gas stored in the first air cylinder 1 enters the second locking air cylinder 4 through the second air port 12, the second switching valve 52, the second manual exhaust valve 54 and the eighth air port 42, so that the cylinder rod of the second locking air cylinder 4 extends, the second air door is controlled to be in a locking state, and cannot be opened, and a locking effect is realized;
in this process, the second manual exhaust valve 54 may perform manual exhaust according to the difference in the gas containing amounts of the first cylinder 1 and the second latching cylinder 4 to ensure safety and stability;
after passing by a pedestrian or a travelling crane, manually closing the first air door, wherein the cylinder rod of the first air cylinder 1 is manually shortened, air stored in the first air cylinder 1 enters the second locking air cylinder 4 through the first air port 11, the first switching valve 51, the first manual exhaust valve 53 and the seventh air port 41, so that the cylinder rod of the second locking air cylinder 4 is shortened, the blocking of the second air door is further released, and the second air door can be opened;
similarly, when the second air door is opened, the cylinder rod of the second air cylinder 2 is manually stretched and lengthened, and the air stored in the second air cylinder 2 enters the first locking air cylinder 3 through the third air port 21, the third switching valve 61, the third manual exhaust valve 62 and the fifth air port 31, so that the cylinder rod of the first locking air cylinder 3 is lengthened, and the first air door is controlled to be in a locking state and cannot be opened, so that a locking effect is achieved;
in this process, the third manual exhaust valve 62 may perform manual exhaust according to the difference in the gas accommodation amounts of the second cylinder 2 and the first latching cylinder 3 to ensure safety and stability;
after the pedestrian or the travelling crane passes, the second air door is manually closed, at the moment, the cylinder rod of the second air cylinder 2 is manually shortened, and the air stored in the second air cylinder 2 enters the first locking air cylinder 3 through the fourth air port 22, the fourth switching valve 63, the fourth manual exhaust valve 64 and the sixth air port 32, so that the cylinder rod of the first locking air cylinder 3 is shortened, the blocking of the first air door is further released, and the first air door can be opened.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (4)
1. The automatic locking device for the air door in the underground air-break state comprises a first air cylinder and a second air cylinder, wherein the first air door comprises two door bodies which are linked, the opening and the closing of the first air cylinder are controlled, the second air door comprises two door bodies which are linked, and the opening and the closing of the second air cylinder are controlled; the method is characterized in that: the air conditioner further comprises a first locking air cylinder, a second locking air cylinder, a first locking control box and a second locking control box, wherein the first locking air cylinder is connected with one door body of the first air door, a bayonet matched with the first locking air cylinder is arranged above the door body, the second locking air cylinder is connected with one door body of the second air door, a bayonet matched with the second locking air cylinder is arranged above the door body, the first locking control box comprises a first switching valve, a second switching valve, a first manual exhaust valve and a second manual exhaust valve, and the second locking control box comprises a third switching valve, a fourth switching valve, a third manual exhaust valve and a fourth manual exhaust valve; the first switching valve is respectively connected with a first air port of the first air cylinder and a first manual exhaust valve, and the first manual exhaust valve is respectively connected with a seventh air port of the second locking air cylinder; the second switching valve is respectively connected with a second air port of the first air cylinder and a second manual exhaust valve, and the second manual exhaust valve is connected with an eighth air port of the second locking air cylinder; the fourth switching valve is respectively connected with a fourth air port of the second air cylinder and a fourth manual exhaust valve, and the fourth manual exhaust valve is connected with a sixth air port of the first locking air cylinder; the third switching valve is respectively connected with a third air port of the second cylinder and a third manual exhaust valve, and the third manual exhaust valve is connected with a fifth air port of the first locking cylinder; the first switching valve, the second switching valve, the third switching valve and the fourth switching valve are all connected with a total air source.
2. An automatic damper locking device for use in a downhole air break condition as claimed in claim 1, wherein: a control box and a linkage control box are arranged between the total air source and the first air cylinder as well as between the total air source and the second air cylinder, the total air source is respectively connected with the first control box and the second control box, the first control box is connected with the first linkage control box, the second control box is connected with the second linkage control box, and an interlocking linkage line and an unlocking linkage line are arranged between the first linkage control box and the second linkage control box.
3. An automatic damper locking device for use in a downhole air break condition as claimed in claim 2, wherein: the first control box is internally provided with an opening, closing, interlocking and unlocking operation control program, the first linkage control box is required to be controlled when each program is executed, and the first linkage control box and the second linkage control box are required to be in linkage control when the interlocking and unlocking instructions are executed.
4. A damper automatic locking device for use in a downhole air break condition as claimed in claim 3, wherein: the second control box is internally provided with an opening, closing, interlocking and unlocking operation control program, the second linkage control box is required to be controlled when each program is executed, and the second linkage control box and the first linkage control box are required to be in linkage control when the interlocking and unlocking instructions are executed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321297998.7U CN219809035U (en) | 2023-05-26 | 2023-05-26 | Automatic locking device for air door under underground air-break state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321297998.7U CN219809035U (en) | 2023-05-26 | 2023-05-26 | Automatic locking device for air door under underground air-break state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219809035U true CN219809035U (en) | 2023-10-10 |
Family
ID=88216652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321297998.7U Active CN219809035U (en) | 2023-05-26 | 2023-05-26 | Automatic locking device for air door under underground air-break state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219809035U (en) |
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2023
- 2023-05-26 CN CN202321297998.7U patent/CN219809035U/en active Active
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