CN112901242B - Auxiliary explosion door system for coal mine air shaft air guide chamber - Google Patents
Auxiliary explosion door system for coal mine air shaft air guide chamber Download PDFInfo
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- CN112901242B CN112901242B CN202110273013.6A CN202110273013A CN112901242B CN 112901242 B CN112901242 B CN 112901242B CN 202110273013 A CN202110273013 A CN 202110273013A CN 112901242 B CN112901242 B CN 112901242B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/16—Shaft covers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/103—Dams, e.g. for ventilation
- E21F17/12—Dam doors
Abstract
The invention discloses an auxiliary explosion-proof door system for a wind tunnel of a coal mine, which is arranged on a top plate of a gallery section of the wind tunnel and comprises a base, supporting bars, a door body, upright posts, side buffering mechanisms, supporting rod mechanisms, top buffering mechanisms and a top cover, wherein the base is fixed on the top plate of the wind tunnel, the base is of a plate-shaped structure with a rectangular explosion venting hole in the middle, a plurality of groups of supporting bars are arranged in the rectangular explosion venting hole, the door body is positioned at the upper end of the rectangular explosion venting hole, a plurality of circular through holes are uniformly distributed on the door body, explosion-proof films are stuck on the door body, at least four groups of upright posts are vertically fixed on the base, the top of the upright posts is fixedly connected with the top buffering mechanisms, the top cover is sleeved on the upright posts and is installed at the lower end of the top buffering mechanisms through the supporting rod mechanisms, and the side buffering mechanisms are fixed on the base and are positioned at the side ends of the door body; the auxiliary explosion venting device has good auxiliary explosion venting effect, relatively simple overall structure, lower manufacturing, mounting and maintenance cost and easy popularization and application.
Description
Technical Field
The invention relates to the technical field of coal mine safety, in particular to an auxiliary explosion door system for a coal mine air shaft air guide chamber, which is used for reducing explosion impact suffered by a coal mine main ventilator.
Background
The main ventilation fan on the ground of the coal mine is used for conveying fresh air underground and exhausting toxic and harmful gases, is called as a 'mine lung', and is continuous, safe and reliable in operation and concerns the safety of the whole mine. In order to protect the main ventilator from being damaged by underground explosion shock waves, the main ventilator is usually arranged beside the wellhead of the air shaft, is communicated with the air shaft through a section of branch tunnel called an air guiding cave, and is provided with an explosion door at the wellhead of the air shaft. When gas and coal dust explosion happen underground, the explosion shock waves are separated to form two shock waves when passing through the intersection of the air shaft and the air guide cave, and the two shock waves continuously spread along the air shaft towards the wellhead, and the explosion door of the wellhead is opened by punching and is discharged to the atmosphere; and the other shock wave propagates along the wind tunnel and finally reaches the position of the main ventilator. Compared with the shock wave from underground, the shock wave entering the wind scooper is greatly attenuated, and the main ventilator is not damaged greatly. By the arrangement mode of the mine main ventilator, explosion impact wave energy can be mainly discharged from a wellhead, so that the main ventilator biased at the tail end of the wind guiding chamber is prevented from large impact.
However, a large number of coal mine explosion accident rescue cases show that when the explosion power is huge, besides the wellhead explosion door being flushed, the wind tunnel and the main ventilator are often severely damaged, such as wind tunnel burst, fan blade breakage, fan shell bulging and the like. This indicates that the existing main ventilator arrangement and its associated explosion vent have not been able to effectively protect the main ventilator under strong explosion conditions.
Aiming at the problems, the proposal of adding an auxiliary explosion venting channel and an auxiliary explosion door in the wind tunnel is proposed at home and abroad so as to further weaken the explosion impact of the main ventilator through the advanced explosion venting function of the auxiliary explosion venting channel. However, for a long time, people have not paid attention to, and the method for hopefully improving the safety protection level of the main ventilator obviously cannot be applied, and a specific and feasible technical implementation scheme is also seen.
Disclosure of Invention
In order to overcome the defects, the invention aims to provide an auxiliary explosion-proof door system for a wind tunnel of a coal mine.
In order to achieve the above purpose, the invention is implemented according to the following technical scheme:
the auxiliary explosion vent system for the wind tunnel of the coal mine is arranged on a top plate of a gallery section of the wind tunnel and comprises a base, supporting strips, a door body, upright posts, side buffering mechanisms, supporting rod mechanisms, top buffering mechanisms and a top cover, wherein the base is fixed on the top plate of the wind tunnel, the base is of a plate-shaped structure with a rectangular explosion venting hole in the middle, a plurality of groups of supporting strips are arranged in the rectangular explosion venting hole, the supporting strips are fixed on two side walls of the rectangular explosion venting hole, the door body is positioned at the upper end of the rectangular explosion venting hole, the outer ends of the two door bodies are hinged and fixed with the base through hinges, at least four groups of upright posts are vertically fixed on the base, the top of each upright post is fixedly connected with the top buffering mechanism, and the top cover is sleeved on the upright posts and is installed at the lower end of the top buffering mechanism through the supporting rod mechanisms;
further, the side buffering mechanism comprises a buffering seat and a buffering block, wherein the buffering seat is fixed at the upper end of the base and is positioned at the outer side end of the door body, and the buffering block is fixed at the upper part of the buffering seat;
further, the supporting rod mechanism comprises a supporting rod body, a base, supporting pins and pin shafts, wherein the supporting rod body is of a rod-shaped structure, the upper part of the supporting rod body is inwards bent, the bottom of the supporting rod body is fixedly connected with the base through the pin shafts, the base is fixed on the base, the top of the supporting rod body is inserted into a mounting hole of the top cover, and the supporting pins penetrate through the top of the supporting rod body and are used for lifting the top cover;
further, the top buffer mechanism comprises a tray and an annular buffer block which are fixedly connected together, the tray and the annular buffer block are sleeved on the stand column in a penetrating way, the tray is positioned at the top of the annular buffer block, and the tray is fixedly connected with the top of the stand column;
furthermore, a plurality of circular through holes are formed in the two door bodies, the circular through holes are distributed at equal intervals, and explosion-proof films are adhered to the two door bodies and used for covering the circular through holes in the door bodies and gaps between the two door bodies;
furthermore, sealing strips are arranged around the rectangular explosion venting holes and are adhered and fixed on the base;
further, guide sleeves are arranged around the top cover, the upright posts penetrate through the guide sleeves, two handles are symmetrically arranged at the upper end of the top cover, and a sealing plate is adhered to the lower part of the top cover;
further, the supporting bar comprises a steel wire rope, a slotted polyurethane sleeve and a steel wire rope lock catch, wherein the steel wire rope lock catch is fixed on the side wall of the rectangular explosion venting hole, the slotted polyurethane sleeve is sleeved outside the steel wire rope, and two ends of the steel wire rope are respectively fixed on the side wall of the rectangular explosion venting hole through two steel wire rope lock catches;
further, an elastic rope is arranged between the two door bodies and the base, one end of the elastic rope is fixed on the door body, and the other end of the elastic rope is fixed on the base;
further, be provided with the anti-wind lockhole that link up on the stand, the distance between anti-wind lockhole to the base is greater than the length of uide bushing, anti-wind lockhole is used for inserting anti-wind pin and fixes the top cap on the base under the anti-wind operating mode.
The technical principle of the invention is as follows:
(1) Under normal working conditions, the door body and the explosion-proof film are sucked on the base, and in a closed state, the auxiliary explosion venting channel of the wind-guiding chamber is covered and sealed, so that normal operation of a mine ventilation system is ensured, and when abnormal weather such as hail is met, the top cover can protect the explosion-proof film.
(2) Under the explosion working condition, the explosion shock wave firstly breaks through the explosion-proof membrane to realize the explosion venting in advance, then the door body is opened, the auxiliary explosion venting channel is completely opened, the explosion air flow is rapidly vented, and the shock wave which is towards the main ventilator can be obviously weakened, so that the auxiliary protection effect on the main ventilator is realized; the discharged explosion airflow impacts the top cover to move upwards, the top plate buffer structure is extruded to shrink, and meanwhile, the top cover and the supporting rod are separated; the separated stay bars can fall outwards only under the actions of base constraint, air flow and the like; when the explosion airflow is weakened, the door body is reset and closed under the traction action of the elastic rope, and the top cover falls down under the dead weight action and finally covers the door body, so that the auxiliary explosion venting channel is plugged in an emergency mode. The sieve mesh structure of the door body enables the door body to be subjected to small impact airflow resistance when reset, so that reset can be realized before the top cover falls down, and collision and clamping phenomena of the door body and the top cover in the reset process can be avoided. The guide sleeve on the top cover has a certain length, so that the occurrence of clamping between the top cover and the upright post can be reduced. In complex explosion conditions, jamming of the roof and the column is likely to occur. If the clamping is not serious, the top cover can be reset under the vibration action caused by ventilation negative pressure and wind flow. If the card is not serious, manual inspection and intervention are needed.
(3) Under the working condition of the reverse wind, the mine ventilation is switched from negative pressure ventilation to positive pressure ventilation, the top cover is required to be fallen down in advance manually and covered on the door body, and the top cover is fixed on the upright post by the reverse wind pin. Under the covering pressure effect of the top cover, the door body and the explosion-proof film can not be outwards opened, and normal implementation of mine anti-wind operation can be ensured.
(4) And under the working condition of wind stopping, the auxiliary explosion-proof door does not act.
Compared with the prior art, the invention has the following advantages:
(1) The invention adopts the door bodies with a plurality of circular through holes and the explosion-proof membrane to jointly block and seal the explosion venting channel, thereby realizing quick explosion venting. When the rupture disk is independently adopted, the rupture disk is made of a tearing-resistant material, so that the ventilation negative pressure effect can be resisted, and the corresponding rupture disk pressure can be higher, so that quick release explosion is not facilitated. When the metal plate is adopted alone to make the door body, the door body forms stronger reflection shock wave with the explosion shock wave in-process easily, and is unfavorable to protecting the main ventilation blower, and the impact that the door body received by itself is great, easily damaged. When the circular through hole door body and the explosion-proof film are used in combination, the requirement on the tear resistance of the material of the explosion-proof film can be greatly reduced due to the small suspended bearing area of the explosion-proof film, and the required film breaking pressure can be small, so that the explosion-proof film is beneficial to quick explosion release; the door body has smaller impact area, and the explosion-proof membrane is broken and explosion-relieved in advance, so that the door body has smaller impact and is not easy to damage in explosion; in the process of interaction of the explosion shock wave with the sieve tray door body and the explosion-proof film, the generated reflected shock wave is smaller.
(2) After explosion venting is completed, the door body and the top cover are automatically reset in sequence, so that the emergency blocking of an explosion venting channel is realized, and the ventilation and recovery work after disaster is not affected. The separation of the top cover and the supporting rod mechanism is realized by utilizing the action of explosion impact air flow; the door body is reset before the top cover by utilizing the characteristic of small wind resistance of the door body and the tension action of the elastic rope; the top cover is reset by gravity; for the unexpected clamping phenomenon, vibration caused by ventilation negative pressure and wind flow is eliminated. No additional resetting systems such as hydraulic and electromagnetic systems are used, and in most cases, no manual intervention is needed.
(3) The door body has small opening pressure and high explosion venting speed, is required to be installed at the turning position of the wind guiding tunnel, can play a remarkable auxiliary explosion venting effect, and can remarkably enhance the safety protection level of the main ventilation fan of the mine. The explosion shock wave can be reflected when passing through the turning part of the wind tunnel, and a pressure rising area is formed. The auxiliary explosion venting channel is arranged at the position, and the auxiliary explosion door with the characteristic of quick explosion venting is arranged, so that the strength of reflected shock waves can be effectively weakened, and the strength of the shock waves reaching the main ventilator can be obviously reduced.
(4) By using the auxiliary explosion door system, the additionally increased management and maintenance work is very small, the whole structure of the system is relatively simple, the manufacturing, mounting and maintenance cost is low, and the popularization and the application are easy.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic view of the structure of the present invention under normal working conditions;
FIG. 2 is a schematic view of the invention without rupture disc under normal conditions;
FIG. 3 is a schematic view of the structure of the present invention in an explosive condition;
FIG. 4 is a schematic diagram of the present invention in a post-disaster reset condition;
FIG. 5 is a schematic view of the structure of the present invention in a windward condition;
FIG. 6 is a schematic view of the mounting arrangement of the present invention;
FIG. 7 is a schematic illustration of the base and support bar assembly relationship of the present invention;
FIG. 8 is a schematic view of the top cover construction of the present invention;
FIG. 9 is a schematic illustration of the assembled relationship of the top cover and sealing plate of the present invention;
FIG. 10 is a schematic illustration of the strut mechanism of the present invention;
in the figure, a 1-base, a 2-supporting strip, a 3-door body, a 4-explosion-proof film, a 5-side buffer mechanism, a 6-upright post, a 7-top cover, an 8-supporting rod mechanism, a 9-top buffer mechanism, a 10-hinge, an 11-elastic rope, a 12-sealing plate, a 13-sealing strip, a 14-back wind pin, a 15-rectangular explosion venting hole, a 16-wind guiding chamber, a 17-main ventilator, a 18-upright wind shaft, a 19, a main explosion-proof door, a 201-thin steel wire rope, a 202-seamed polyurethane sleeve, a 203-steel wire rope lock catch, a 701-guiding sleeve, a 702-handle, a 801-supporting rod, a 802-base, 803-supporting pins, a 804-pin shaft, a 51-buffer seat, a 52-buffer block, a 31-circular through hole, a 91-tray, a 92-annular buffer block and a 61-back wind locking hole.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments, wherein the exemplary embodiments and descriptions of the invention are for purposes of illustration, but are not intended to be limiting.
The auxiliary explosion-proof door system for the coal mine air shaft air guide chamber is shown in fig. 1, and is arranged on a top plate of a gallery section of the air guide chamber 16, a main ventilator 17 is arranged at the tail end of the air guide chamber 16, the air guide chamber 16 is obliquely intersected with an upright air shaft 18, explosion waves can be split during blasting working conditions, a main explosion-proof door 19 is arranged at a wellhead of the upright air shaft 18, and the auxiliary explosion-proof door system of the embodiment is arranged on the top plate of the gallery section of the air guide chamber 16.
The auxiliary explosion vent system for the wind tunnel of the coal mine comprises a base 1, supporting strips 2, a door body 3, upright posts 6, side buffering mechanisms 5, supporting rod mechanisms 8, top buffering mechanisms 9 and a top cover 7, wherein the base 1 is fixed on a top plate of the wind tunnel, the base 1 is of a plate-shaped structure with a rectangular explosion venting hole 15 in the middle, the base 1 adopts a plate-shaped steel structure, a plurality of groups of supporting strips 2 are arranged in the rectangular explosion venting hole 15, the supporting strips 2 are fixed on two end side walls of the rectangular explosion venting hole 15, the door body 3 is positioned at the upper end of the rectangular explosion venting hole 15, the outer ends of the door bodies 3 are hinged and fixed with the base 1 through hinges 10, the upright posts 6 are four groups and are vertically fixed on the base 1, the tops of the upright posts 6 are fixedly connected with the top buffering mechanisms 9, and the upright posts 6 are of metal rod-shaped structures and are used for guiding up and down movements of the top cover 7 and supporting the top buffering mechanisms 9; the top cover 7 is sleeved on the upright post 6 and is arranged at the lower end of the top buffer mechanism 9 through the supporting rod mechanism 8, and the side buffer mechanism 5 is fixed on the base 1 and is positioned at the side end of the door body 3.
In this embodiment, the side buffer mechanism 5 includes a buffer seat 51 and a buffer block 52, the buffer seat 51 is fixed at the upper end of the base 1 and is located at the outer end of the door body 3, and the buffer block 52 is fixed at the upper portion of the buffer seat 51; the side cushioning mechanism 5 is used to provide cushioning protection for the door body 3 when it is opened by an explosion wave impact.
In this embodiment, the brace mechanism 8 includes a brace body 801, a base 802, a support pin 803 and a pin 804, all made of metal, where the brace body 801 is in a rod-shaped structure, and the upper portion is bent inward, the bottom of the brace body 801 is fixedly connected with the base 802 through the pin 804, the base 802 is fixed on the base 1, the top of the brace body 801 is inserted into a mounting hole of the top cover 7, and the support pin 803 penetrates through the top of the brace body 801 to lift the top cover 7; when the strut mechanism 8 explodes, the shock wave moves the top cover 7 upwards, and the strut body 801 tilts outwards, so that the top cover 7 covers the upper part of the rectangular explosion venting hole 15 downwards.
In this embodiment, the top buffer mechanism 9 includes a tray 91 and an annular buffer block 92 that are fixedly connected together, the tray 91 and the annular buffer block 92 are all sleeved on the upright post 6, the tray 91 is located at the top of the annular buffer block 92, and the tray 91 is fixedly connected with the top of the upright post 6.
In this embodiment, a plurality of circular through holes 31 are formed in the two door bodies 3, the circular through holes 31 are distributed at equal intervals, an explosion-proof film 4 is adhered to the two door bodies 3, and the explosion-proof film 4 is used for covering gaps between the circular through holes 31 on the door bodies 3 and the two door bodies 3.
In this embodiment, sealing strips 13 are disposed around the rectangular explosion venting hole 15, and the sealing strips are fixed on the base 1 in a pasting manner.
In this embodiment, a guide sleeve 701 is disposed around the top cover 7, the upright posts 6 penetrate through the guide sleeve 701, two handles 702 are symmetrically mounted at the upper end of the top cover 7, and a sealing plate 12 is adhered to the lower portion of the top cover 7.
In this embodiment, the supporting bar 2 includes a steel wire rope 201, a slotted polyurethane sleeve 202 and a steel wire rope lock 203, the steel wire rope lock 203 is fixed on the side wall of the rectangular explosion venting hole 15, the slotted polyurethane sleeve 202 is sleeved outside the steel wire rope 201, and two ends of the steel wire rope 201 are respectively fixed on the side wall of the rectangular explosion venting hole 15 through two steel wire rope locks 203; the slotted polyurethane sleeve 202 is used for increasing the supporting area of the steel wire rope 201, and can be automatically separated under the action of explosive air flow, so that the whole impact area of the supporting bar 2 is reduced, and the risk that the supporting bar 2 is damaged by shock waves is reduced.
In the embodiment, an elastic rope 11 is arranged between the two door bodies 3 and the base 1, one end of the elastic rope 11 is fixed on the door bodies 3, and the other end is fixed on the base 1; the elastic rope 11 is used for assisting the door body 3 to reset.
In this embodiment, the upright 6 is provided with a through anti-wind lock hole 61, a distance between the anti-wind lock hole 61 and the base 1 is greater than a length of the guide sleeve 701, and the anti-wind lock hole 61 is used for inserting the anti-wind pin 14 to fix the top cover 7 on the base 1 under an anti-wind working condition.
The installation and construction method of the embodiment comprises the following steps:
the embodiment is arranged at the top of the gallery section of the air guiding cave 16, and is preferably arranged near the junction of the axis extension line of the inclined gallery section of the air guiding cave 16 and the top surface of the gallery section. The required auxiliary explosion venting channels are excavated at the selected installation positions on the wind tunnel 16, and then the expansion bolts are used for installing and fixing the embodiment above the auxiliary explosion venting channels. For a newly built mine, an auxiliary explosion venting channel can be reserved when the wind tunnel 16 is constructed. Before installation, the auxiliary explosion vent is preassembled. When in assembly, the whole explosion-proof film 4 is stuck on the closed door body 3; the upright post 6 is smeared with lubricating grease. The maximum outer included angle between the stay bar body 801 and the base 1 is smaller than 90 degrees, a certain pretightening force exists between the stay bar 801 and the top cover 7 after installation, the stay bar 801 and the top cover 7 can be prevented from being separated due to the disturbance of natural strong wind, and the stay bar 801 can also have a trend of falling outwards under the explosion working condition. After installation, the gap between this embodiment and the wall of the air guiding chamber 16 is treated with polyurethane foam. During normal use, the auxiliary explosion vent can be checked regularly in combination with work such as mine anti-wind exercise, and the easily-aged parts such as the explosion-proof membrane 4, the elastic rope 11 and the like can be replaced regularly.
The technical principle of the auxiliary explosion door system provided by the invention is as follows:
under normal working conditions, the auxiliary explosion vent door body 3 and the explosion-proof membrane 4 are attracted onto the base 1 and are in a closed state, and the auxiliary explosion venting channel of the wind-guiding chamber 16 is covered and sealed, so that the normal operation of a mine ventilation system is ensured. When explosion occurs underground, the explosion shock wave firstly breaks the explosion-proof membrane 4 to realize the explosion venting in advance, then the door body 3 is opened, the auxiliary explosion venting channel is completely opened, the explosion air flow is rapidly vented, and the shock wave reaching the vicinity of the main ventilator is obviously weakened, so that the auxiliary protection effect on the main ventilator is realized; the blast air flow impacts the top cover 7 to move upwards, the top plate buffer structure 9 is extruded to shrink, and meanwhile, the top cover 7 and the supporting rod 801 are separated; the separated stay bar 801 can fall outwards only under the action of the restriction of the base 802, the air flow and the like; when the explosion airflow is weakened, the door body 3 is reset and closed under the action of the elastic rope 11, the top cover 7 falls under the action of dead weight and finally covers the door body 3, so that the auxiliary explosion venting channel is plugged in an emergency mode. Under the working condition of the reverse wind, the mine ventilation is switched from negative pressure ventilation to positive pressure ventilation, the top cover 7 is required to be manually dropped down in advance and covered on the door body 3, and the reverse wind pin 14 fixes the top cover 7 on the upright post 6. Under the covering pressure of the top cover 7, the door body 3 and the explosion-proof film 4 can not be outwards opened, and normal implementation of mine anti-wind operation can be ensured. And under the working condition of wind stopping, the auxiliary explosion-proof door does not act.
The key technical action implementation principle of the auxiliary explosion door system provided by the invention is as follows:
in the explosion venting and resetting process, the circular through hole 31 of the door body 3 enables the door body 3 to be subjected to small impact airflow resistance during resetting, and the elastic rope 11 is assisted in the shrinkage traction effect, so that the door body 3 and the top cover 7 can be reset before falling, and collision and clamping phenomena of the door body 7 and the top cover 7 in the resetting process can be avoided. The guide sleeve 701 on the top cover 7 has a certain length, so that the clamping between the top cover 7 and the upright post 6 can be reduced. In extreme adverse situations, jamming of the top cover 7 and the upright 6 may occur. If the clamping is not serious, the top cover 7 can be reset under the vibration action caused by ventilation negative pressure and wind flow. If the card is not serious, manual inspection and intervention are needed.
The technical scheme of the invention is not limited to the specific embodiment, and all technical modifications made according to the technical scheme of the invention fall within the protection scope of the invention.
Claims (8)
1. The auxiliary explosion vent system for the wind tunnel is arranged on a top plate of a roadway section of the wind tunnel and is characterized by comprising a base, supporting bars, a door body, at least four groups of upright posts, side buffering mechanisms, a supporting rod mechanism, a top buffering mechanism and a top cover, wherein the base is fixed on the top plate of the wind tunnel, the base is of a plate-shaped structure with a rectangular explosion venting hole in the middle, a plurality of groups of supporting bars are arranged in the rectangular explosion venting hole, the supporting bars are fixed on two side walls of the rectangular explosion venting hole, the door body is positioned at the upper end of the rectangular explosion venting hole, the door bodies are hinged and fixed with the base through hinges, at least four groups of upright posts are vertically fixed on the base, the top of each upright post is fixedly connected with the top buffering mechanism, the top cover is sleeved on the upright posts and is installed at the lower end of the top buffering mechanism through the supporting rod mechanism, the side buffering mechanism is fixed on the base and positioned at the side end of the door body, the side buffering mechanism comprises a buffer seat and a buffer seat is positioned at the outer side of the buffer seat and is fixed at the buffer seat; the supporting rod mechanism comprises a supporting rod body, a base, supporting pins and pin shafts, wherein the supporting rod body is of a rod-shaped structure, the upper portion of the supporting rod body is bent inwards, the bottom of the supporting rod body is fixedly connected with the base through the pin shafts, the base is fixed on the base, the top of the supporting rod body is inserted into a mounting hole of the top cover, and the supporting pins penetrate through the top of the supporting rod body and are used for lifting the top cover.
2. The auxiliary explosion vent system for the wind tunnel of the coal mine wind tunnel according to claim 1, wherein the top buffer mechanism comprises a tray and an annular buffer block which are fixedly connected together, the tray and the annular buffer block are sleeved on the upright post in a penetrating manner, the tray is positioned at the top of the annular buffer block, and the tray is fixedly connected with the top of the upright post.
3. The auxiliary explosion vent system for the wind tunnel of the coal mine according to any one of claims 1 or 2, wherein a plurality of circular through holes are formed in each of the two door bodies, the plurality of circular through holes are distributed at equal intervals, and explosion-proof films are adhered to the two door bodies and are used for covering the circular through holes in the door bodies and gaps between the two door bodies.
4. The auxiliary explosion vent system for the wind tunnel of the coal mine as claimed in claim 3, wherein sealing strips are arranged around the rectangular explosion venting holes, and the sealing strips are adhered and fixed on the base.
5. The auxiliary explosion door system for the wind tunnel of the coal mine wind shaft according to claim 3, wherein the guide sleeve is arranged around the top cover, the upright posts penetrate through the guide sleeve, two handles are symmetrically arranged at the upper end of the top cover, and the sealing plate is adhered to the lower part of the top cover.
6. The auxiliary explosion vent system for the wind tunnel of the coal mine wind shaft according to claim 3, wherein the supporting bar comprises a steel wire rope, a slotted polyurethane sleeve and steel wire rope locks, the steel wire rope locks are fixed on the side wall of the rectangular explosion venting hole, the slotted polyurethane sleeve is sleeved outside the steel wire rope, and two ends of the steel wire rope are fixed on the side wall of the rectangular explosion venting hole through two steel wire rope locks respectively.
7. An auxiliary explosion door system for a wind tunnel of a coal mine as claimed in claim 3, wherein an elastic rope is arranged between the two door bodies and the base, one end of the elastic rope is fixed on the door body, and the other end of the elastic rope is fixed on the base.
8. The auxiliary explosion vent system for the wind tunnel of the coal mine as set forth in claim 5, wherein the upright post is provided with a through anti-wind lock hole, the distance between the anti-wind lock hole and the base is greater than the length of the guide sleeve, and the anti-wind lock hole is used for inserting an anti-wind pin to fix the top cover on the base under the anti-wind working condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110273013.6A CN112901242B (en) | 2021-03-13 | 2021-03-13 | Auxiliary explosion door system for coal mine air shaft air guide chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110273013.6A CN112901242B (en) | 2021-03-13 | 2021-03-13 | Auxiliary explosion door system for coal mine air shaft air guide chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112901242A CN112901242A (en) | 2021-06-04 |
| CN112901242B true CN112901242B (en) | 2023-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110273013.6A Active CN112901242B (en) | 2021-03-13 | 2021-03-13 | Auxiliary explosion door system for coal mine air shaft air guide chamber |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074544B (en) * | 2014-06-18 | 2017-03-29 | 河南理工大学 | Vertical ventilating shaft Double door type explosion protection system |
| CN107152301B (en) * | 2017-07-25 | 2019-05-03 | 河南理工大学 | A kind of leading explosion venting device of explosion-proof door of coal miine vertical shaft and explosion proof door |
| CN111749732B (en) * | 2020-07-03 | 2022-02-01 | 河南理工大学 | Main and standby coal mine air shaft explosion door system |
| CN111810217B (en) * | 2020-07-22 | 2022-02-01 | 河南理工大学 | Auxiliary explosion-proof system for coal mine air shaft |
| CN112096444B (en) * | 2020-09-22 | 2022-06-21 | 扬州大学 | Self-recovery type inclined shaft pressure relief explosion-proof device and method for coal mine safety production |
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- 2021-03-13 CN CN202110273013.6A patent/CN112901242B/en active Active
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