CN113153407B - Mine ventilation explosion-proof well lid - Google Patents
Mine ventilation explosion-proof well lid Download PDFInfo
- Publication number
- CN113153407B CN113153407B CN202110486973.0A CN202110486973A CN113153407B CN 113153407 B CN113153407 B CN 113153407B CN 202110486973 A CN202110486973 A CN 202110486973A CN 113153407 B CN113153407 B CN 113153407B
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- Prior art keywords
- sliding
- well cover
- sleeve
- well lid
- outer well
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- 238000009423 ventilation Methods 0.000 title claims abstract description 34
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 230000003139 buffering effect Effects 0.000 claims abstract description 12
- 210000002105 tongue Anatomy 0.000 claims description 40
- 239000000872 buffer Substances 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 14
- 239000003245 coal Substances 0.000 abstract description 8
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 238000013459 approach Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- 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 piece, a supporting rod, a sliding sleeve, a second sliding rod, a second elastic piece, a first fixed pulley, a second fixed pulley, a limiting sleeve, a limiting tongue, a pulley support, a third fixed pulley, a first rope, a second rope and a balancing weight. The mine ventilation explosion-proof well lid realizes the sealing between the outer well lid and the well mouth in a normal running state; when explosion occurs in underground 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 air waves are discharged from a well mouth; after the explosion is finished, the outer well cover is resealed on the well mouth; when the wind is reversed, the outer well cover and the well mouth are kept airtight; when the ventilator fails, the outer well cover is opened quickly, and natural ventilation of the mine is realized under natural wind pressure.
Description
Technical Field
The invention relates to the technical field of mine equipment, in particular to a mine ventilation explosion-proof well cover.
Background
The explosion-proof well lid is installed at the return air vertical well mouth of the coal mine, and in a normal operation state, the explosion-proof well lid is airtight with the well mouth, when explosion such as gas, coal dust and the like occurs in the underground coal mine, high-pressure air waves generated by the explosion impact the explosion-proof well lid to be opened, so that the ventilator is prevented from being damaged by the high-pressure air waves, and after the explosion is finished, the explosion-proof well lid is resealed on the well mouth, so that the ventilator continues to normally operate, and the ventilation normal operation in the underground is ensured. At present, after explosion, the explosion-proof well lid is impacted to the well head far away by high-pressure blast, and it takes a long time to reset the explosion-proof well lid and seal on the well head, and furthermore, the explosion-proof well lid is impacted and damaged by high-pressure blast, and the well head can not be closed in time, which seriously affects the ventilation safety of the mine.
The coal mine safety regulations prescribe that a main ventilator of a production mine must be provided with a back-wind facility and the direction of the air quantity in a tunnel can be changed within 10 minutes. At present, a plurality of metal pressing plates are generally arranged in a coal mine, and are positioned beside an explosion-proof well lid in a normal operation state, and are pressed in a pressing groove of the explosion-proof well lid in a reverse wind state and fastened and fixed by bolts. Under the special condition without any preparation, under the assumption that a fire disaster occurs at a certain position of the underground air inlet tunnel, mine upwind is needed. At this time, because no preparation exists, a ventilator driver cannot complete the compaction and fan reversal operation of the explosion-proof well cover within 10min, and the requirement of changing the wind flow direction in a roadway within 10min cannot be met, so that the safety of a mine is affected.
In addition, when the ventilator breaks down, the explosion-proof well lid can be opened fast, ensures to realize the natural ventilation 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, avoids the damage of the explosion-proof well lid, resets the explosion-proof well lid in time after the explosion is finished, keeps the sealing with the well mouth during the reverse wind, and opens the explosion-proof well lid rapidly when a ventilator breaks down.
In order to achieve the above purpose, the technical solution adopted by the present 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 piece, a supporting rod, a sliding sleeve, a second sliding rod, a second elastic piece, a first fixed pulley, a second fixed pulley, a limiting sleeve, a limiting tongue, a pulley support, 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 contacted with the well mouth;
the central position above the inner well cover is provided with a first sliding rod, the central position of the outer well cover is provided with a first sliding hole, the first sliding rod penetrates through the first sliding hole and is connected with the first sliding hole in a sliding mode, the upper end of the first sliding rod is provided with a baffle plate, the baffle plate is positioned on the upper surface of the outer well cover, a first elastic piece is arranged between the lower part of the outer well cover and the upper part of the inner well cover, the first elastic piece is extruded when the inner well cover is close to the outer well cover to realize buffering between the outer well cover and the first sliding hole, and the outer well cover is provided with a sealing piece 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 plurality of supporting rods are arranged at equal intervals along the circumferential direction, sliding sleeves are arranged at the tail ends of the supporting rods, second sliding rods with the same number as the sliding sleeves are arranged at equal intervals around a wellhead, second sliding holes corresponding to the positions of the second sliding rods are formed in the edge positions of the outer well cover, the second sliding rods penetrate through the second sliding holes and are in sliding connection with the second sliding holes, the sliding sleeves are in sliding connection with the second sliding rods, second elastic pieces are arranged at the upper ends of the second sliding rods, and when the sliding sleeves are close to the upper ends of the second sliding rods, the second elastic pieces are extruded to realize buffering between the second sliding rods and the second sliding rods;
the edge of the outer well cover is positioned at the outer side of the second sliding hole, first fixed pulleys with the same number as the second sliding holes are arranged at equal intervals, second fixed pulleys with the same number as the first fixed pulleys are arranged at the periphery of the well head at equal intervals, a limiting sleeve is arranged at the inner side of the second fixed pulleys, the limiting sleeve 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 be separated from two sides of the limiting sleeve, when the limiting tongues are inserted into the limiting sleeve, one ends of the limiting tongues can be exposed from the limiting sleeve to enable one ends of the limiting tongues to be pressed on the edge position of the outer well cover, pulley supports with the same number as the second fixed pulleys are arranged at equal intervals at the periphery 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 set as a pressure spring, a first assembly groove is formed in the central position below the outer well cover, a second assembly groove is formed in the central position above the inner well cover, the first sliding rod penetrates through the pressure spring, and two ends of the pressure spring are respectively assembled in the first assembly groove and the second assembly groove.
Preferably, the sealing element is a sleeve made of elastic materials, the sleeve is located between the outer well cover and the inner well cover, the first sliding rod penetrates through the sleeve, two ends of the sleeve are respectively connected with the outer well cover and the inner well cover, and the connecting position of the sleeve and the outer well cover surrounds the first sliding hole.
Preferably, the second elastic piece is set as the pressure spring, the second slide bar passes from the inside of pressure spring, and the upper end of second slide bar is connected to the one end of pressure spring, and the other end of pressure spring is provided with the buffer seat, and the upper end of sliding sleeve is provided with down the buffer seat.
Preferably, the number of the support 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, both the first rope and the second rope are provided as steel cords.
Preferably, the limit sleeve is fixed on the periphery of 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 running state, the limiting tongue is inserted into the limiting sleeve, one end of the limiting tongue is pressed and covered on the edge position of the outer well lid, so that the sealing between the outer well lid and a well mouth is realized, and the ventilation air flow short circuit of a mine is avoided; when explosion occurs in a coal mine underground, the inner well cover absorbs most of impact energy of high-pressure air waves, so that the impact of the high-pressure air waves on the outer well cover is reduced, the outer well cover is prevented from being damaged by the impact of the high-pressure air 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 air waves are discharged from a wellhead; after the explosion is finished, the limit tongue is reinserted into the limit sleeve, and the outer well lid is resealed on the well mouth; when the wind is reversed, the limit tongue is kept in the limit sleeve, one end of the limit tongue is kept to be pressed on the edge position of the outer well cover, the sealing of the outer well cover and the well mouth is kept, the phenomenon that the outer well cover is flushed by the wind pressure in the reverse wind and the wind pressure in the forward direction are avoided, and the failure of the reverse wind caused by the short circuit of the ventilation wind flow of the mine is avoided; when the ventilator breaks down, the air pressure inside and outside the outer well lid is the same, under the action of the gravity of the balancing weight, the limiting tongue is separated from the other side of the limiting sleeve, one end of the limiting tongue is separated from the outer well lid, the outer well lid is enabled to be opened rapidly, the outer well lid and the inner well lid are driven to move upwards, and natural ventilation of a mine is achieved under natural wind pressure.
Drawings
FIG. 1 is a top view of a mine ventilation explosion-proof well lid in accordance with an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a cross-sectional view 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 at D in fig. 3.
Detailed Description
The present invention will be further described in detail below with reference to specific embodiments and with reference to the accompanying drawings, in order to make the objects, technical solutions and advantageous effects of the present invention more apparent. Some embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments 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 directions or positional relationships indicated by the terms "inner", "outer", "upper", "lower", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In an embodiment of the invention, a mine ventilation explosion-proof well lid is provided, and 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 piece 31, a second elastic piece 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.
The inside of outer well lid 11 sets up interior well lid 12, 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 buffering 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 is sealed with the well mouth 10, and the inner well cover 12 is not contacted with the well mouth 10.
The lower part of the inner well cover 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 on the inner well cover 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 first slide bar 21 is arranged at the central position above the inner well lid 12, specifically, the lower end of the first slide bar 21 is provided with external threads, and the lower end of the first slide bar 21 penetrates through the inner well lid 12 and is fixed by assembling the locking nut 211, so that the first slide bar 21 is detachably connected with the inner well lid 12. In special cases, the inner well cover 12 is damaged by the impact of high-pressure air waves, so that the inner well cover 12 can be replaced in time. Of course, even if the inner well cover 12 is damaged by impact, the normal sealing of the outer well cover 11 and the well mouth 10 is not affected, and the inner well cover 12 is replaced before normal production operation after the coal mine explosion is finished. The central position of the outer well cover 11 is provided with a first sliding hole, 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 well lid 12 moves in the vertical direction with respect to the outer well lid 11 in synchronization with the first slide bar 21.
The upper end of first slide bar 21 is provided with baffle 212, and baffle 212 is located the upper surface of outer well lid 11, makes interior well lid 12 overlap joint on outer well lid 11 through first slide bar 21, baffle 212. A first elastic member 31 is provided between the lower side of the outer manhole cover 11 and the upper side of the inner manhole cover 12. The inner well lid 12 is impacted by high-pressure air waves to move upwards along the vertical direction, and when the inner well lid 12 approaches the outer well lid 11, the first elastic piece 31 is extruded to realize buffering between the two (the outer well lid 11 and the inner well lid 12). Specifically, the first elastic member 31 is set to be a compression spring i, the first assembly groove is formed in the central position below the outer well cover 11, the second assembly groove is formed in the central position above the inner well cover 12, the first sliding rod 21 penetrates through the compression spring i, and two ends of the compression spring i are respectively assembled in the first assembly groove and the second assembly groove. When the inner well cover 12 is close to the outer well cover 11, the pressure spring I is extruded.
The sealing piece 213 is arranged on the outer well cover 11 at the position of the first sliding hole so as to avoid air leakage at the position of the first sliding hole of the outer well cover 11. Specifically, the sealing member 213 is provided as a sleeve made of an elastic material, such as an elastic plastic, and the sleeve is located between the outer well lid 11 and the inner well lid 12, the first sliding rod 21 passes through the interior of the sleeve, two ends of the sleeve are respectively connected with the outer well lid 11 and the inner well lid 12, and the connection position of the sleeve and the outer well lid 11 surrounds the first sliding hole.
The upper end of the first slide bar 21 is connected with four support rods 23, the support rods 23 extend to the periphery, the four support rods 23 are arranged at equal intervals along the circumferential direction, and the tail ends of the support rods 23 are provided with sliding sleeves 4. Four second slide bars 22 are arranged at equal intervals around the wellhead 10, and second slide holes are formed in the edge positions of the outer well cover 11 and correspond to the positions of the second slide bars 22. The second slide bar 22 passes through the second slide hole, and the second slide bar 22 is slidably connected to the second slide hole. The outer well cover 11 can move in the vertical direction relative to the second slide bar 22, and the second slide bar 22 guides the outer well cover 11 to move 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 piece 32 is arranged at the upper end of the second slide bar 22, and when the slide sleeve 4 approaches to the upper end of the second slide bar 22, the second elastic piece 32 is extruded to realize buffering between the slide sleeve 4 and the second slide bar 22. Specifically, the second elastic component is set to a compression spring ii, the second slide bar 22 passes through from the inside of the compression spring ii, one end of the compression spring ii is connected to the upper end of the second slide bar 22, the other end of the compression 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 to the upper end of the second sliding rod 22, the upper buffer seat 221 impacts the lower buffer seat 222, and the compression spring ii is extruded.
Four first fixed pulleys 51 are arranged at equal intervals on the outer side of the second sliding hole at the edge of the outer well cover 11, and four second fixed pulleys 52 are arranged at equal intervals on the periphery of the well head 10. 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 the connecting line of the first fixed pulley 51 and the second fixed pulley 52. The limit tongue 62 can be inserted into the limit sleeve 61 from two sides of the limit sleeve 61, the limit tongue 62 can also be separated from two sides of the limit sleeve 61, and when the limit tongue 62 is inserted into the limit sleeve 61, the limit tongue 62 can be exposed from the limit sleeve 61, so that one end of the limit tongue 62 is pressed and covered at the edge position of the outer well cover 11. The limit sleeve 61 is fixed around the wellhead 10 through an anchor rod, so that the limit sleeve 61 is firmly fixed.
Four pulley brackets 7 are arranged at equal intervals on the periphery of the wellhead 10 and outside the second fixed pulleys 52, and two third fixed pulleys 53 are arranged at the top ends of the pulley brackets 7.
In the present embodiment, both the first rope 81 and the second rope 82 are provided as steel wire 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 a 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. Wherein the first rope 81 is attached to the lower side of the first fixed sheave 51, the second rope 82 is attached to the lower side of the second fixed sheave 52, and the second rope 82 is attached to the upper sides of the two third fixed sheaves 53.
The present embodiment has been described in detail with reference to the accompanying drawings. From the foregoing description, those skilled in the art will be aware of the mine ventilation explosion-proof well lid of the present invention. According to the mine ventilation explosion-proof well lid, in a normal running state, the limit tongue 62 is inserted into the limit sleeve 61, one end of the limit tongue 62 is pressed and covered on the edge position of the outer well lid 11, so that the sealing between the outer well lid 11 and the well mouth 10 is realized, and the ventilation air flow short circuit of a mine is avoided; when explosion occurs in underground coal mine, the inner well cover 12 is impacted by high-pressure air waves generated by the explosion, the inner well cover 12 absorbs most impact energy of the high-pressure air waves, impact of the high-pressure air waves to the outer well cover 11 is reduced, the outer well cover 11 is prevented from being damaged by the impact of the high-pressure air waves, the inner well cover 12 is upwards close to the outer well cover 11 after being impacted by the high-pressure air waves, the first elastic piece 31 is extruded to realize buffering between the two, meanwhile, the first sliding rod 21 drives the sliding sleeve 4 to upwards slide along the second sliding rod 22 through the supporting rod 23, the second elastic piece 32 is extruded to realize buffering between the two when the sliding sleeve 4 is close to the upper end of the second sliding rod 22, the first rope 81 drives the limit tongue 62 to separate from one side of the limit sleeve 61 in the separating direction towards the inner side, the outer well cover 11 is opened after the limit tongue 62 is separated from the limit sleeve 61, the outer well cover 11 upwards slides along the second sliding rod 22, and the high-pressure air waves are discharged from the wellhead 10; after the explosion is finished, the balancing weight 9 drives the limit tongue 62 to reinsert the limit sleeve 61 through the second rope 82, simultaneously drives the outer well cover 11 and the inner well cover 12 to descend through the first rope 81, simultaneously, the outer well cover 11 and the inner well cover 12 descend under the action of self gravity, one end of the limit tongue 62 is pressed on the edge position of the outer well cover 11 again, and the outer well cover 11 is sealed on the wellhead 10 again; when in reverse wind, the limit tongue 62 is kept in the limit sleeve 61, one end of the limit tongue 62 is kept to be pressed at the edge position of the outer well cover 11, the outer well cover 11 is kept to be airtight with the well mouth 10, the outer well cover 11 is prevented from being flushed away by reverse wind positive wind pressure, and reverse wind failure caused by mine ventilation wind flow short circuit is avoided; when the ventilator fails, the air pressure inside and outside the outer well cover 11 is the same, under the action of gravity of the balancing weight 9, the balancing weight 9 drives the limit tongue 62 to separate from the other side of the limit sleeve 61 through the second rope 82, the separating direction faces to the outer side, one end of the limit tongue 62 is separated from the outer well cover 11, the outer well cover 11 is enabled to be opened quickly, meanwhile, the outer well cover 11 and the inner well cover 12 are driven to move upwards, and natural ventilation of a mine is achieved under natural wind pressure.
While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the 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 piece, a supporting rod, a sliding sleeve, a second sliding rod, a second elastic piece, 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 contacted with the well mouth;
the central position above the inner well cover is provided with a first sliding rod, the central position of the outer well cover is provided with a first sliding hole, the first sliding rod penetrates through the first sliding hole and is connected with the first sliding hole in a sliding mode, the upper end of the first sliding rod is provided with a baffle plate, the baffle plate is positioned on the upper surface of the outer well cover, a first elastic piece is arranged between the lower part of the outer well cover and the upper part of the inner well cover, the first elastic piece is extruded when the inner well cover is close to the outer well cover to realize buffering between the outer well cover and the first sliding hole, and the outer well cover is provided with a sealing piece 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 plurality of supporting rods are arranged at equal intervals along the circumferential direction, sliding sleeves are arranged at the tail ends of the supporting rods, second sliding rods with the same number as the sliding sleeves are arranged at equal intervals around a wellhead, second sliding holes corresponding to the positions of the second sliding rods are formed in the edge positions of the outer well cover, the second sliding rods penetrate through the second sliding holes and are in sliding connection with the second sliding holes, the sliding sleeves are in sliding connection with the second sliding rods, second elastic pieces are arranged at the upper ends of the second sliding rods, and when the sliding sleeves are close to the upper ends of the second sliding rods, the second elastic pieces are extruded to realize buffering between the second sliding rods and the second sliding rods;
the edge of the outer well cover is positioned at the outer side of the second sliding hole, first fixed pulleys with the same number as the second sliding holes are arranged at equal intervals, second fixed pulleys with the same number as the first fixed pulleys are arranged at the periphery of the well head at equal intervals, a limiting sleeve is arranged at the inner side of the second fixed pulleys, the limiting sleeve 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 be separated from two sides of the limiting sleeve, when the limiting tongues are inserted into the limiting sleeve, one ends of the limiting tongues can be exposed from the limiting sleeve to enable one ends of the limiting tongues to be pressed on the edge position of the outer well cover, pulley supports with the same number as the second fixed pulleys are arranged at equal intervals at the periphery 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 arranged to be a pressure spring, a first assembly groove is formed in the central position below the outer well cover, a second assembly groove is formed in the central position above the inner well cover, the first sliding rod penetrates through the pressure spring, and two ends of the pressure spring are assembled in the first assembly groove and the second assembly groove respectively.
3. The mine ventilation explosion-proof well lid of claim 1, wherein: the sealing element is arranged as a sleeve made of elastic materials, the sleeve is positioned between the outer well cover and the inner well cover, the first sliding rod penetrates through the sleeve, the two ends of the sleeve are respectively connected with the outer well cover and the inner well cover, and the connecting position of the sleeve and the outer well cover surrounds the first sliding hole.
4. The mine ventilation explosion-proof well lid of claim 1, wherein: the second elastic piece is arranged as a pressure spring, the second sliding rod penetrates through the pressure spring, 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 cover 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 arranged as steel wire ropes.
10. The mine ventilation explosion-proof well lid of claim 1, wherein: the limit sleeve is fixed on the periphery of the wellhead through the anchor rod.
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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
|---|---|
| CN113153407A CN113153407A (en) | 2021-07-23 |
| CN113153407B true CN113153407B (en) | 2023-08-15 |
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| CN202110486973.0A Active CN113153407B (en) | 2021-05-03 | 2021-05-03 | Mine ventilation explosion-proof well lid |
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