CN113153407A - Mine ventilation explosion-proof well lid - Google Patents
Mine ventilation explosion-proof well lid Download PDFInfo
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- CN113153407A CN113153407A CN202110486973.0A CN202110486973A CN113153407A CN 113153407 A CN113153407 A CN 113153407A CN 202110486973 A CN202110486973 A CN 202110486973A CN 113153407 A CN113153407 A CN 113153407A
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- 238000009423 ventilation Methods 0.000 title claims abstract description 36
- 230000003139 buffering effect Effects 0.000 claims abstract description 10
- 210000002105 tongue Anatomy 0.000 claims description 40
- 239000000872 buffer Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000013013 elastic material Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000004880 explosion Methods 0.000 abstract description 16
- 239000003245 coal Substances 0.000 abstract description 8
- 238000013459 approach Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention provides a mine ventilation explosion-proof well cover, and relates to the technical field of mine equipment. The mine ventilation explosion-proof well lid comprises an outer well lid, an inner well lid, a first sliding rod, a first elastic part, a supporting rod, a sliding sleeve, a second sliding rod, a second elastic part, a first fixed pulley, a second fixed pulley, a limiting sleeve, a limiting tongue, a pulley bracket, a third fixed pulley, a first rope, a second rope and a balancing weight. According to the mine ventilation explosion-proof well lid, the outer well lid and the well mouth are sealed in a normal operation state; when explosion occurs in a coal mine, the buffering of the outer well cover and the inner well cover is realized, the damage of the outer well cover is avoided, and high-pressure blast is discharged from a well mouth; after the explosion is finished, the outer well cover is sealed on the well mouth again; when the wind is reversed, the outer well cover and the well mouth are kept closed; when the ventilator breaks down, the outer well cover is quickly opened, and the natural ventilation of the mine is realized under natural wind pressure.
Description
Technical Field
The invention relates to the technical field of mining equipment, in particular to a mine ventilation explosion-proof well lid.
Background
The explosion-proof well lid of return air vertical shaft well head installation in colliery, when normal operating condition, explosion-proof well lid and well head are airtight, and when the explosion such as gas, coal dust takes place in the colliery, the high-pressure blast of explosion production strikes explosion-proof well lid and opens to avoid high-pressure blast to strike and destroy the ventilation blower, after the explosion, with explosion-proof well lid reseal on the well head, make the ventilation blower continue normal operating, ensure the ventilation normal operating in the pit. Present explosion-proof well lid, after the emergence explosion, explosion-proof well lid is impacted the well head far away position by high-pressure gas wave, resets explosion-proof well lid again sealed need consume longer time on the well head, and what is more, explosion-proof well lid is damaged by high-pressure gas wave impact, more can not in time realize the airtight of well head, and this ventilation safety that has seriously influenced the mine.
The regulation of coal mine safety regulations stipulates that a main ventilator of a production mine must be provided with a back draft facility and can change the air volume direction in a roadway within 10 min. At present, a plurality of metal pressing plates are generally arranged in a coal mine, when the coal mine runs normally, the metal pressing plates are located beside an anti-explosion well cover, and when the coal mine runs against the wind, the metal pressing plates are pressed in a pressing groove of the anti-explosion well cover and are fastened and fixed through bolts. Under the special condition without any preparation, if a fire disaster dangerous situation occurs at a certain position of an underground air inlet roadway, mine air reversing is needed. At this time, because no preparation is available, a driver of the ventilator cannot complete the compression of the explosion-proof well cover and the reversal operation of the ventilator within 10min, and the requirement of changing the direction of wind flow in a roadway within 10min cannot be met, so that the safety of a mine is affected.
In addition, when the ventilation blower breaks down, explosion-proof well lid can be opened fast, ensures to realize the natural draft of mine under natural wind pressure.
Disclosure of Invention
The invention aims to provide a mine ventilation explosion-proof well lid, which realizes the sealing of the explosion-proof well lid and a well mouth in a normal operation state, buffers the explosion-proof well lid during explosion and avoids the damage of the explosion-proof well lid, the explosion-proof well lid is reset in time after the explosion is finished, the explosion-proof well lid keeps the sealing with the well mouth in a counter wind state, and the explosion-proof well lid is quickly opened when a ventilator fails.
In order to achieve the above purpose, the technical solution adopted by the invention is as follows:
a mine ventilation explosion-proof well lid comprises an outer well lid, an inner well lid, a first sliding rod, a first elastic part, a supporting rod, a sliding sleeve, a second sliding rod, a second elastic part, a first fixed pulley, a second fixed pulley, a limiting sleeve, a limiting tongue, a pulley bracket, a third fixed pulley, a first rope, a second rope and a balancing weight;
an inner well cover is arranged in the outer well cover, a space is reserved between the outer well cover and the inner well cover, the outer well cover covers the well mouth, and the inner well cover is not in contact with the well mouth;
a first sliding rod is arranged at the central position above the inner well cover, a first sliding hole is formed in the central position of the outer well cover, the first sliding rod penetrates through the first sliding hole and is connected with the first sliding hole in a sliding mode, a baffle is arranged at the upper end of the first sliding rod and is located on the upper surface of the outer well cover, a first elastic piece is arranged between the lower portion of the outer well cover and the upper portion of the inner well cover, the first elastic piece is extruded to achieve buffering between the inner well cover and the outer well cover when the inner well cover is close to the outer well cover, and a sealing piece is arranged on the outer well cover at the position of the first sliding hole;
the upper end of the first sliding rod is connected with a plurality of supporting rods, the supporting rods extend to the periphery, the supporting rods are arranged at equal intervals along the circumferential direction, the tail ends of the supporting rods are provided with sliding sleeves, second sliding rods with the same number as the sliding sleeves are arranged at equal intervals around a wellhead, the edge position of the outer well cover is provided with second sliding holes corresponding to the second sliding rods, the second sliding rods penetrate through the second sliding holes and are connected with the second sliding holes in a sliding mode, the sliding sleeves are connected to the second sliding rods in a sliding mode, the upper ends of the second sliding rods are provided with second elastic pieces, and the second elastic pieces are extruded to achieve buffering between the sliding sleeves and the second sliding rods when the sliding sleeves are close to the upper ends of the second sliding rods;
the edge of the outer well cover is positioned on the outer side of the second sliding hole and is provided with first fixed pulleys with the same number as the second sliding hole at equal intervals, second fixed pulleys with the same number as the first fixed pulleys are arranged on the periphery of the well mouth at equal intervals, a limiting sleeve is arranged on the periphery of the well mouth at the inner side of the second fixed pulleys and is positioned on a connecting line of the first fixed pulleys and the second fixed pulleys, limiting tongues can be inserted into the limiting sleeve from two sides of the limiting sleeve and can also be separated from two sides of the limiting sleeve, when the limiting tongues are inserted into the limiting sleeve, the limiting tongues can be exposed out of the limiting sleeve to enable one end of the limiting tongues to be pressed on the edge of the outer well cover, pulley supports with the same number as the second fixed pulleys are arranged on the periphery of the well mouth at equal intervals on the outer side of the second fixed pulleys, and at least one third fixed pulley is arranged on each pulley support;
one end of the first rope is connected with the sliding sleeve, the other end of the first rope is connected with one end of the limiting tongue through the first fixed pulley, one end of the second rope is connected with the other end of the limiting tongue, and the other end of the second rope is connected with the balancing weight through the second fixed pulley and the third fixed pulley in sequence.
Preferably, the first elastic piece is a pressure spring, a first assembling groove is formed in the center of the lower portion of the outer well cover, a second assembling groove is formed in the center of the upper portion of the inner well cover, the first sliding rod penetrates through the pressure spring from the inside, and two ends of the pressure spring are assembled in the first assembling groove and the second assembling groove respectively.
Preferably, the sealing member sets up to the sleeve of making by elastic material, and the sleeve is located between well lid and the interior well lid, first slide bar passes from telescopic inside, and outer well lid and interior well lid are connected respectively at telescopic both ends, and the hookup location of sleeve and outer well lid encircles first slide opening.
Preferably, the second elastic part is a pressure spring, the second sliding rod penetrates through the pressure spring from the inside, one end of the pressure spring is connected with the upper end of the second sliding rod, the other end of the pressure spring is provided with an upper buffer seat, and the upper end of the sliding sleeve is provided with a lower buffer seat.
Preferably, the number of the supporting rods is four.
Preferably, the number of the third fixed pulleys is two.
Preferably, the other end of the second rope is connected with a tray, and a plurality of balancing weights are placed on the tray.
Preferably, the lower part of the inner well cover is bent inwards to form a half-opening space.
Preferably, the first rope and the second rope are both provided as steel cords.
Preferably, the stop collar is fixed around the wellhead through the anchor rod.
The beneficial technical effects of the invention are as follows:
according to the mine ventilation explosion-proof well lid, in a normal operation state, the limiting tongue is inserted into the limiting sleeve, one end of the limiting tongue is pressed on the edge of the outer well lid, the outer well lid is sealed with a well mouth, and short circuit of mine ventilation airflow is avoided; when explosion happens in a coal mine, the inner well cover absorbs most of impact energy of high-pressure gas waves, the impact of the high-pressure gas waves on the outer well cover is reduced, the outer well cover is prevented from being damaged by the impact of the high-pressure gas waves, the first elastic piece achieves buffering between the inner well cover and the outer well cover, meanwhile, the second elastic piece achieves buffering of the sliding sleeve and the second sliding rod, when the sliding sleeve slides upwards, the limiting tongue is separated from one side of the limiting sleeve, the outer well cover is opened, the outer well cover slides upwards along the second sliding rod, and the high-pressure gas waves are discharged from a well mouth; after the explosion is finished, the limiting tongue is inserted into the limiting sleeve again, and the outer well cover is sealed on the well mouth again; when in a backwind, the limiting tongue is kept in the limiting sleeve, one end of the limiting tongue is kept to be pressed on the edge of the outer well cover, the outer well cover and the well mouth are kept to be sealed, the outer well cover is prevented from being flushed by a backwind positive wind pressure, and a backwind failure caused by a mine ventilation wind current short circuit is avoided; when the ventilation blower breaks down, the inside and outside atmospheric pressure of outer well lid is the same, and under the effect of balancing weight gravity, spacing tongue breaks away from the opposite side of stop collar, and the one end of spacing tongue breaks away from outer well lid, makes outer well lid open fast, drives outer well lid, interior well lid rebound, realizes the natural draft of mine under natural wind pressure.
Drawings
FIG. 1 is a top view of a mine ventilation explosion-proof well cover according to an embodiment of the invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is an enlarged view of a portion of FIG. 3 at C;
fig. 5 is a partial enlarged view of fig. 3 at D.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings in combination with the specific embodiments. Certain embodiments of the invention now will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. Indeed, various embodiments of the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements.
In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In an embodiment of the present invention, a ventilation and explosion-proof well lid for a mine is provided, please refer to fig. 1 to 5.
A mine ventilation explosion-proof well lid comprises an outer well lid 11, an inner well lid 12, a first sliding rod 21, a second sliding rod 22, a supporting rod 23, a first elastic part 31, a second elastic part 32, a sliding sleeve 4, a first fixed pulley 51, a second fixed pulley 52, a third fixed pulley 53, a limiting sleeve 61, a limiting tongue 62, a pulley bracket 7, a first rope 81, a second rope 82, a balancing weight 9 and the like.
Well lid 12 in the inside setting of outer well lid 11 leaves the space between outer well lid 11 and the interior well lid 12, and this space is used for outer well lid 11 and interior well lid 12 buffer space when being close to each other. The outer well cover 11 is covered on the well mouth 10, so that the outer well cover 11 and the well mouth 10 are closed, and the inner well cover 12 is not contacted with the well mouth 10.
The lower part of the inner well lid 12 is bent inwards to form a half-opening space which is used for accommodating high-pressure air waves, so that the thrust generated by the high-pressure air waves to the inner well lid 12 is focused on the position of the first slide rod 21, and the first slide rod 21 moves upwards along the vertical direction.
The central point of interior well lid 12 top sets up first slide bar 21, and is concrete, and the lower extreme of first slide bar 21 sets up the external screw thread, and the lower extreme of first slide bar 21 passes interior well lid 12 and assembles lock nut 211 fixed, makes first slide bar 21 can dismantle with interior well lid 12 and be connected. Under special conditions, the high-pressure blast impacts and damages the inner well cover 12, and timely replacement of the inner well cover 12 can be realized. Of course, even if the inner well lid 12 is damaged by impact, the normal sealing between the outer well lid 11 and the well head 10 is not affected, and the inner well lid 12 can be replaced before normal production operation after the coal mine explosion is finished. A first sliding hole is formed in the center of the outer well cover 11, the first sliding rod 21 penetrates through the first sliding hole, the first sliding rod 21 is connected with the first sliding hole in a sliding mode, and the first sliding rod 21 can move in the vertical direction relative to the first sliding hole. The inner manhole cover 12 moves in a vertical direction in synchronism with the first slide bar 21 relative to the outer manhole cover 11.
The upper end of the first sliding rod 21 is provided with a baffle 212, and the baffle 212 is located on the upper surface of the outer well lid 11, so that the inner well lid 12 is lapped on the outer well lid 11 through the first sliding rod 21 and the baffle 212. A first elastic member 31 is disposed between the lower side of the outer well cover 11 and the upper side of the inner well cover 12. Interior well lid 12 receives the impact of high-pressure gas wave to move up along vertical direction, and first elastic component 31 is extrudeed when interior well lid 12 is close to outer well lid 11 and is realized the buffering between the two (outer well lid 11, interior well lid 12). Specifically, the first elastic piece 31 is set to be a pressure spring I, a first assembling groove is formed in the central position below the outer well cover 11, a second assembling groove is formed in the central position above the inner well cover 12, the first sliding rod 21 penetrates through the pressure spring I, and two ends of the pressure spring I are assembled in the first assembling groove and the second assembling groove respectively. When the inner well lid 12 is close to the outer well lid 11, the pressure spring I is extruded.
The outer well lid 11 is provided with a sealing member 213 at the position of the first sliding hole to prevent the first sliding hole of the outer well lid 11 from leaking air. Specifically, the sealing member 213 is configured as a sleeve made of an elastic material, such as elastic plastic, the sleeve is located between the outer well lid 11 and the inner well lid 12, the first sliding rod 21 penetrates through the sleeve, two ends of the sleeve are respectively connected to the outer well lid 11 and the inner well lid 12, and a connection position of the sleeve and the outer well lid 11 surrounds the first sliding hole.
Four bracing pieces 23 are connected to the upper end of first slide bar 21, and bracing piece 23 extends to all around, and four bracing pieces 23 are arranged along circumferencial direction equidistant, and the end of bracing piece 23 sets up sliding sleeve 4. Four second sliding rods 22 are arranged around the wellhead 10 at equal intervals, second sliding holes are formed in the edge of the outer well cover 11, and the second sliding holes correspond to the second sliding rods 22 in position. The second slide bar 22 passes through the second slide hole, and the second slide bar 22 is slidably connected with the second slide hole. The manhole cover 11 can move in the vertical direction relative to the second sliding rod 22, and the second sliding rod 22 guides the movement of the manhole cover 11 in the vertical direction. The sliding sleeve 4 is slidably connected to the second sliding rod 22, and the sliding sleeve 4 can move in a vertical direction relative to the second sliding rod 22.
The second elastic element 32 is arranged at the upper end of the second sliding rod 22, and when the sliding sleeve 4 approaches the upper end of the second sliding rod 22, the second elastic element 32 is squeezed to realize the buffering between the sliding sleeve 4 and the second sliding rod 22. Specifically, the second elastic member is a pressure spring ii, the second sliding rod 22 penetrates through the pressure spring ii, one end of the pressure spring ii is connected with the upper end of the second sliding rod 22, the other end of the pressure spring ii is provided with an upper buffer seat 221, and the upper end of the sliding sleeve 4 is provided with a lower buffer seat 222. When the sliding sleeve 4 approaches the upper end of the second sliding rod 22, the upper buffer seat 221 impacts the lower buffer seat 222, and the pressure spring II is extruded.
The border position of outer well lid 11 sets up four first fixed pulleys 51 in the outside of second slide opening equidistant, and well head 10 equidistant sets up four second fixed pulleys 52 all around. A limiting sleeve 61 is arranged on the periphery of the wellhead 10 and on the inner side of the second fixed pulley 52, and the limiting sleeve 61 is positioned on a connecting line of the first fixed pulley 51 and the second fixed pulley 52. The limiting tongues 62 can be inserted into the limiting sleeve 61 from two sides of the limiting sleeve 61, the limiting tongues 62 can also be separated from two sides of the limiting sleeve 61, and when the limiting tongues 62 are inserted into the limiting sleeve 61, the limiting tongues 62 can be exposed from the limiting sleeve 61, so that one ends of the limiting tongues 62 are pressed on the edge of the outer well cover 11. Wherein, stop collar 61 is fixed in well head 10 all around through the stock to make stop collar 61 firmly fixed.
Four pulley supports 7 are arranged on the periphery of the wellhead 10 at equal intervals outside the second fixed pulleys 52, and two third fixed pulleys 53 are arranged at the top ends of the pulley supports 7.
In this embodiment, the first rope 81 and the second rope 82 are both provided as steel ropes. One end of the first rope 81 is connected with the outer side wall of the sliding sleeve 4, the other end of the first rope 81 is connected with one end of the limiting tongue 62 through the first fixed pulley 51, one end of the second rope 82 is connected with the other end of the limiting tongue 62, the other end of the second rope 82 is connected with the tray through the second fixed pulley 52 and the third fixed pulley 53 in sequence, and a plurality of balancing weights 9 are placed on the tray. The first rope 81 is attached to the lower side of the first fixed pulley 51, the second rope 82 is attached to the lower side of the second fixed pulley 52, and the second rope 82 is attached to the upper sides of the two third fixed pulleys 53.
Up to this point, the present embodiment has been described in detail with reference to the accompanying drawings. From the above description, those skilled in the art should clearly understand the mine ventilation explosion-proof well cover of the present invention. According to the mine ventilation explosion-proof well lid, in a normal operation state, the limiting tongue 62 is inserted into the limiting sleeve 61, one end of the limiting tongue 62 is pressed on the edge of the outer well lid 11, so that the outer well lid 11 and the well mouth 10 are sealed, and short circuit of mine ventilation airflow is avoided; when explosion occurs in a coal mine, high-pressure gas waves generated by the explosion impact the inner well lid 12, the inner well lid 12 absorbs most of impact energy of the high-pressure gas waves, the impact of the high-pressure gas waves on the outer well lid 11 is reduced, the outer well lid 11 is prevented from being damaged by the impact of the high-pressure gas waves, the inner well lid 12 is upward close to the outer well lid 11 after being impacted by the high-pressure gas waves, the first elastic piece 31 is extruded to realize the buffer between the inner well lid and the outer well lid, meanwhile, the first slide bar 21 drives the sliding sleeve 4 to slide upwards along the second slide bar 22 through the support bar 23, the second elastic member 32 is squeezed to realize the buffering between the sliding sleeve 4 and the second slide bar 22 when the sliding sleeve 4 approaches the upper end of the second slide bar 22, when the sliding sleeve 4 slides upwards, the first rope 81 drives the limiting tongue 62 to separate from one side of the limiting sleeve 61, the separation direction faces towards the inner side, after the limiting tongue 62 separates from the limiting sleeve 61, the outer well lid 11 is opened, the outer well lid 11 slides upwards along the second slide bar 22, and high-pressure air waves are discharged from the wellhead 10; after the explosion is finished, the balancing weight 9 drives the limiting tongue 62 to be inserted into the limiting sleeve 61 again through the second rope 82, meanwhile, the first rope 81 drives the outer well lid 11 and the inner well lid 12 to descend, meanwhile, the outer well lid 11 and the inner well lid 12 descend under the action of self gravity, one end of the limiting tongue 62 is pressed on the edge of the outer well lid 11 again, and the outer well lid 11 is sealed on the well mouth 10 again; when in a back wind, the limiting tongue 62 is kept in the limiting sleeve 61, one end of the limiting tongue 62 is kept to be pressed on the edge of the outer well lid 11, the outer well lid 11 and the well mouth 10 are kept to be sealed, the outer well lid 11 is prevented from being flushed by the back wind positive wind pressure, and the back wind failure caused by the short circuit of mine ventilation wind current is avoided; when the ventilation blower breaks down, the inside and outside atmospheric pressure of outer well lid 11 is the same, and under the effect of balancing weight 9 gravity, balancing weight 9 drives spacing tongue 62 through second rope 82 and breaks away from the opposite side of stop collar 61, breaks away from the direction towards the outside, and the one end of spacing tongue 62 breaks away from outer well lid 11, makes outer well lid 11 open fast, drives outer well lid 11, interior well lid 12 upward movement simultaneously, realizes the natural draft of mine under natural wind pressure.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a mine ventilation explosion-proof well lid which characterized in that: the device comprises an outer well cover, an inner well cover, a first sliding rod, a first elastic part, a supporting rod, a sliding sleeve, a second sliding rod, a second elastic part, a first fixed pulley, a second fixed pulley, a limiting sleeve, a limiting tongue, a pulley bracket, a third fixed pulley, a first rope, a second rope and a balancing weight;
an inner well cover is arranged in the outer well cover, a space is reserved between the outer well cover and the inner well cover, the outer well cover covers the well mouth, and the inner well cover is not in contact with the well mouth;
a first sliding rod is arranged at the central position above the inner well cover, a first sliding hole is formed in the central position of the outer well cover, the first sliding rod penetrates through the first sliding hole and is connected with the first sliding hole in a sliding mode, a baffle is arranged at the upper end of the first sliding rod and is located on the upper surface of the outer well cover, a first elastic piece is arranged between the lower portion of the outer well cover and the upper portion of the inner well cover, the first elastic piece is extruded to achieve buffering between the inner well cover and the outer well cover when the inner well cover is close to the outer well cover, and a sealing piece is arranged on the outer well cover at the position of the first sliding hole;
the upper end of the first sliding rod is connected with a plurality of supporting rods, the supporting rods extend to the periphery, the supporting rods are arranged at equal intervals along the circumferential direction, the tail ends of the supporting rods are provided with sliding sleeves, second sliding rods with the same number as the sliding sleeves are arranged at equal intervals around a wellhead, the edge position of the outer well cover is provided with second sliding holes corresponding to the second sliding rods, the second sliding rods penetrate through the second sliding holes and are connected with the second sliding holes in a sliding mode, the sliding sleeves are connected to the second sliding rods in a sliding mode, the upper ends of the second sliding rods are provided with second elastic pieces, and the second elastic pieces are extruded to achieve buffering between the sliding sleeves and the second sliding rods when the sliding sleeves are close to the upper ends of the second sliding rods;
the edge of the outer well cover is positioned on the outer side of the second sliding hole and is provided with first fixed pulleys with the same number as the second sliding hole at equal intervals, second fixed pulleys with the same number as the first fixed pulleys are arranged on the periphery of the well mouth at equal intervals, a limiting sleeve is arranged on the periphery of the well mouth at the inner side of the second fixed pulleys and is positioned on a connecting line of the first fixed pulleys and the second fixed pulleys, limiting tongues can be inserted into the limiting sleeve from two sides of the limiting sleeve and can also be separated from two sides of the limiting sleeve, when the limiting tongues are inserted into the limiting sleeve, the limiting tongues can be exposed out of the limiting sleeve to enable one end of the limiting tongues to be pressed on the edge of the outer well cover, pulley supports with the same number as the second fixed pulleys are arranged on the periphery of the well mouth at equal intervals on the outer side of the second fixed pulleys, and at least one third fixed pulley is arranged on each pulley support;
one end of the first rope is connected with the sliding sleeve, the other end of the first rope is connected with one end of the limiting tongue through the first fixed pulley, one end of the second rope is connected with the other end of the limiting tongue, and the other end of the second rope is connected with the balancing weight through the second fixed pulley and the third fixed pulley in sequence.
2. The mine ventilation explosion-proof well lid of claim 1, wherein: the first elastic piece is a pressure spring, a first assembling groove is formed in the central position of the lower portion of the outer well cover, a second assembling groove is formed in the central position of the upper portion of the inner well cover, the first sliding rod penetrates through the pressure spring from the inside, and two ends of the pressure spring are assembled in the first assembling groove and the second assembling groove respectively.
3. The mine ventilation explosion-proof well lid of claim 1, wherein: the sealing member sets up to the sleeve of making by elastic material, and the sleeve is located between well lid and the interior well lid, first slide bar passes from telescopic inside, and outer well lid and interior well lid are connected respectively at telescopic both ends, and the hookup location of sleeve and outer well lid encircles first slide opening.
4. The mine ventilation explosion-proof well lid of claim 1, wherein: the second elastic piece is set to be a pressure spring, the second sliding rod penetrates through the pressure spring from the inside, one end of the pressure spring is connected with the upper end of the second sliding rod, the other end of the pressure spring is provided with an upper buffer seat, and the upper end of the sliding sleeve is provided with a lower buffer seat.
5. The mine ventilation explosion-proof well lid of claim 1, wherein: the number of the supporting rods is four.
6. The mine ventilation explosion-proof well lid of claim 1, wherein: the number of the third fixed pulleys is two.
7. The mine ventilation explosion-proof well lid of claim 1, wherein: the other end of the second rope is connected with a tray, and a plurality of balancing weights are placed on the tray.
8. The mine ventilation explosion-proof well lid of claim 1, wherein: the lower part of the inner well lid is bent inwards to form a half-opening space.
9. The mine ventilation explosion-proof well lid of claim 1, wherein: the first rope and the second rope are both set to be steel wire ropes.
10. The mine ventilation explosion-proof well lid of claim 1, wherein: the stop collar is fixed in around the well head through the stock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110486973.0A CN113153407B (en) | 2021-05-03 | 2021-05-03 | Mine ventilation explosion-proof well lid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110486973.0A CN113153407B (en) | 2021-05-03 | 2021-05-03 | Mine ventilation explosion-proof well lid |
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| CN113153407A true CN113153407A (en) | 2021-07-23 |
| CN113153407B CN113153407B (en) | 2023-08-15 |
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| JP6860760B1 (en) * | 2019-11-06 | 2021-04-21 | 青島▲か▼唯鎖業有限公司 | Anti-theft valve for oil well mouth |
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| CN110287635A (en) * | 2019-07-03 | 2019-09-27 | 合肥工业大学 | A kind of synchronous counterweight lid formula explosion proof door design method |
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