CN111648811A - High-reliability synchronous counterweight cover type mine explosion door - Google Patents
High-reliability synchronous counterweight cover type mine explosion door Download PDFInfo
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- CN111648811A CN111648811A CN202010353788.XA CN202010353788A CN111648811A CN 111648811 A CN111648811 A CN 111648811A CN 202010353788 A CN202010353788 A CN 202010353788A CN 111648811 A CN111648811 A CN 111648811A
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- 238000004880 explosion Methods 0.000 title claims abstract description 43
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 6
- 230000032683 aging Effects 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 241000221535 Pucciniales Species 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035939 shock Effects 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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- 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
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
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- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The invention discloses a high-reliability synchronous counter weight cover type mine explosion door which comprises an explosion cover, a well body, a redirection frame, a counter weight frame and a counter weight body of a traditional synchronous counter weight cover type explosion door, and a guide system, a buffer device, a condensate water guide plate, a steel oil groove and the like which are researched and developed for improving the reliability of the synchronous counter weight cover type explosion door. On the basis of analyzing the reliability of the traditional synchronous cover type explosion-proof door, in order to improve the movement reliability of the explosion-proof cover and the counterweight body, a guide system of the explosion-proof cover and the counterweight body is added; in order to reduce the possibility that the explosion-proof cover is blown away due to explosion and the impact when the counterweight body falls to the ground, a buffer device of the explosion-proof cover and the counterweight body is added; in order to avoid the phenomenon of air leakage and failure of the explosion-proof cover caused by rubber aging and improve the strength and rigidity of the explosion-proof cover, the sealing rubber connection among the fan-shaped blocks of the explosion-proof cover is changed into continuous welding. The synchronous counterweight explosion-proof door has higher reliability.
Description
Technical Field
The invention relates to the technical field of mine ventilation systems, in particular to a high-reliability synchronous counter weight cover type mine explosion door.
Background
Explosion vents are one of the most important safety components of mine ventilation systems, and are special seals installed in parallel with the main ventilator at the return air wellhead. When normal ventilation is carried out, the explosion door is kept closed, so that short circuit of wind current is prevented; when the main ventilator stops running, the explosion-proof door is automatically opened, so that a mine with certain natural wind pressure is ventilated by using natural wind pressure; when the underground explosion happens, the explosion-proof door is impacted by gas and automatically opened, so that the fan is protected from being damaged.
The main failure modes of the traditional cover type explosion-proof door are as follows: due to the fact that the limiting and guiding devices are not arranged, when explosion happens in a mine, the explosion-proof cover can be blown away, the explosion-proof cover is distorted, deformed and even damaged, and the explosion-proof cover cannot be reset correctly at a large probability; when the explosion-proof cover is opened, the counterweight body can generate huge impact on the ground; when the explosion-proof cover is used for a long time, rubber among all the fan-shaped blocks of the explosion-proof cover is aged, so that the explosion-proof cover leaks air and cannot be opened; the temperature in the well body is higher than the temperature of air, a large amount of condensed water is accumulated on the inner surface of the explosion-proof cover and flows into the oil groove, so that sealing oil in the oil groove is replaced by the condensed water, and the explosion-proof cover cannot be opened due to evaporation or freezing of the condensed water; the well body is formed by cement pouring for sealed oil can the seepage in the oil groove, and sealed oil's seepage can lead to explosion-proof cover unable opening.
Disclosure of Invention
The invention aims to make up for the defects of the prior art and provides a high-reliability synchronous counterweight cover type mine explosion door.
The invention is realized by the following technical scheme:
a high-reliability synchronous counterweight cover type mine explosion door comprises an explosion cover, a plurality of direction-changing frames, a counterweight frame, a counterweight body and a plurality of adjusting ropes, a plurality of first guide shoes are fixed at the edge part of the upper surface of the explosion-proof cover, the number and the positions of the plurality of redirection frames correspond to the first guide shoes, a first guide rail is vertically arranged on each direction-changing frame, the guide shoes are respectively arranged on the corresponding first guide rails in a sliding fit manner, the top of each redirection frame is provided with a pulley mechanism I, the top of the counterweight frame is provided with a pulley mechanism II, a third pulley mechanism is arranged at the lower part of the counterweight frame, the counterweight body is arranged on the counterweight frame in a sliding way, the number of the adjusting ropes is the same as that of the direction changing frames, one end of each adjusting rope is fixed on the explosion-proof cover, and the other end of each adjusting rope sequentially penetrates through the pulley mechanism I, the pulley mechanism III and the pulley mechanism II and is fixed on the counterweight body.
The number of the direction changing frame, the number of the first guide shoe and the number of the adjusting ropes are all 4, and the first guide shoe is uniformly distributed at the edge of the explosion-proof cover.
The explosion-proof cover comprises a plurality of frameworks, one ends of the frameworks are fixedly connected, the other ends of the frameworks are distributed in a radial mode, the end portions of the frameworks are bent downwards, and steel plates are welded between every two adjacent frameworks.
The first guide shoe is fixed on the first guide shoe mounting plate, double frameworks are arranged at positions, corresponding to the four first guide shoes, on the explosion-proof cover, and the four first guide shoe mounting plates are respectively fixed on the four double frameworks.
The first direction-changing frame comprises a first direction-changing frame support, the first pulley mechanism is installed at the top of the first direction-changing frame support, a first direction-changing frame reinforcing plate is fixed on the side face of the first direction-changing frame support along the length direction of the first direction-changing frame support, a guide rail mounting plate is fixed on the first direction-changing frame reinforcing plate, and the first guide rail is installed on the guide rail mounting plate.
The guide rail mounting plate is a U-shaped channel steel, one surface of the U-shaped channel steel is fixed on a bend frame reinforcing plate through bolts, and the other surface of the U-shaped channel steel is fixed with a first guide rail; a limiting plate is arranged on the bend frame strut along the width direction of the bend frame strut, the limiting plate is positioned above the middle upper part of the first guide rail, and a cushion rubber pad is fixedly arranged below the end part of the limiting plate; the bottom of the bend rack support is fixed with a bend rack support fixing seat which is fixed on the mine body.
The counterweight frame comprises counterweight frame pillars, the second pulley mechanism is arranged at the tops of the counterweight frame pillars, the third pulley mechanism is arranged at the lower parts of the counterweight frame pillars, a counterweight body bottom plate is fixed below the counterweight body, the left side and the right side of the counterweight body bottom plate are respectively fixed with a second guide shoe mounting plate, the second guide shoe mounting plate is fixedly arranged on the second guide shoe mounting plate, the left side and the right side of the counterweight body on which the counterweight body is positioned are respectively vertically provided with a second guide rail, and the two guide shoes on the left side and the right side of the counterweight body are respectively arranged on the second guide rails on the two sides in a sliding fit manner; and a buffer pad of the counterweight body is fixed on the ground right below the counterweight body.
Two support rods are fixed on the bottom plate of the counterweight body, penetrate through the counterweight body and extend upwards, a slotted steel plate is fixed at the top of each support rod, and a plurality of adjusting rope fixing blocks are fixed on the slotted steel plate; the bottom of the counterweight frame strut is fixedly provided with a counterweight frame strut fixing seat which is fixed on the ground.
The inner wall of the mine well body is provided with an annular steel oil groove, a condensed water guide plate which is smaller than the explosion-proof cover in the same size with the explosion-proof cover in shape is welded inside the explosion-proof cover, and the radius of the condensed water guide plate is smaller than that of the annular steel oil groove.
The outer wall of the mine well body is provided with a plurality of groups of guide pulley units respectively corresponding to the plurality of direction changing frames, each group of guide pulley units comprises a plurality of pulley assemblies which are arranged at intervals and located at the same height, and the adjusting rope passes through the pulley mechanism I and then enters the pulley mechanism III through the guide of the guide pulley unit corresponding to the adjusting rope.
The invention has the advantages that: 1. the invention adds the guide rail and the guide shoe on the anti-explosion cover and the counterweight body, thus solving the problem of unbalance ascending or descending of the anti-explosion cover and the counterweight body;
2. the limiting buffer device is additionally arranged on the direction change frame, so that the possibility that the explosion-proof cover is blown away when explosion occurs in a mine is avoided.
3. The invention adds the buffer pad on the counterweight body, thereby avoiding the impact when the counterweight body falls to the ground.
4. The invention removes the rubber among the fan-shaped blocks of the explosion-proof cover and avoids the phenomenon of failure of the explosion-proof cover due to air leakage caused by rubber aging.
5. The invention adds the condensate water guide plate, so that the condensate water directly falls into the shaft, and the phenomenon that the sealing oil is replaced is avoided, thereby avoiding the phenomenon that the explosion-proof cover fails due to air leakage of the oil groove.
6. The anti-explosion cover is additionally provided with the steel oil groove, so that the leakage of sealing oil is prevented, and the phenomenon that the anti-explosion cover cannot be opened due to the leakage of the sealing oil is avoided.
Drawings
FIG. 1 is a sequence diagram of the failure modes and their impact relationships of a conventional synchronous counterweight explosion vent;
FIG. 2 is a sequence chart of the failure modes and their impact relationships of the synchronous counterweight vent of the present invention;
FIG. 3 is a schematic view of the overall assembly of the vent;
FIG. 4 is an overall frame view of the explosion proof cover;
FIG. 5 is an enlarged view of a portion of FIG. 4;
FIG. 6 is an assembled view of the explosion proof cover;
FIG. 7 is a schematic view of the assembly of the explosion proof cover guide shoe;
FIG. 8 is an overall assembly view of the bend bracket;
fig. 9 is a schematic view of the counterweight carrier and counterweight body assembly;
FIG. 10 is a schematic view of counterweight guide rail shoe assembly;
FIG. 11 is a schematic view of the assembly of a flow guide plate;
FIG. 12 is a schematic view of a well body and steel oil sump.
Detailed Description
As shown in fig. 3, a high-reliability synchronous counterweight cover type mine explosion vent comprises an explosion vent cover 1, a plurality of redirection frames 2, counterweight frames 3, counterweight bodies 4 and a plurality of adjusting ropes 5, wherein a plurality of guide shoes 6 are fixed at the edge part of the upper surface of the explosion vent cover 1, the number and the positions of the redirection frames 2 correspond to the guide shoes 6, a guide rail 7 is vertically installed on each redirection frame 2, the guide shoes 6 are respectively installed on the guide rails 7 corresponding to the guide rails in a sliding fit manner, a pulley mechanism 8 is installed at the top of each redirection frame 2, a pulley mechanism two 9 is installed at the top of the counterweight frame 3, a pulley mechanism three 10 is installed at the lower part of the counterweight frame 3, the counterweight bodies 4 are installed on the counterweight frame 3 in a sliding manner, the number of the adjusting ropes 5 is the same as that of the redirection frames 2, one end of the adjusting ropes 5 is fixed on the explosion vent cover 1, the other end of the pulley mechanism penetrates through the pulley mechanism I8, the pulley mechanism III 10 and the pulley mechanism II 9 in sequence and is fixed on the counterweight body 4.
The number of the direction changing frame 2, the number of the guide shoes 6 and the number of the adjusting ropes 5 are all 4, and the guide shoes 6 are uniformly distributed at the edge of the explosion-proof cover 1.
As shown in fig. 4, 5, 6, and 7, the explosion-proof cover includes a plurality of frameworks 11, one end of each of the plurality of frameworks 11 is fixedly connected, the other end is radially distributed, the end is bent downward, and a steel plate 12 is welded between two adjacent frameworks 11.
The first guide shoe 6 is fixed on the first guide shoe mounting plate 13, the explosion-proof cover 1 is provided with two frameworks 34 at positions corresponding to the four first guide shoes 6, and as shown in fig. 4 and 5, the four first guide shoe mounting plates are respectively fixed on the four double frameworks 34. The strength of the explosion-proof cover 1 is increased, and the framework is prevented from being broken when the explosion-proof cover 1 is pulled up.
As shown in fig. 8, the direction-changing rack 2 includes a direction-changing rack support 14, the pulley mechanism one 8 is mounted on the top of the direction-changing rack support 14, a direction-changing rack reinforcing plate 15 is fixed on the side surface of the direction-changing rack support 14 along the length direction of the direction-changing rack support 14, a guide rail mounting plate 16 is fixed on the direction-changing rack reinforcing plate 15, and the guide rail one 7 is mounted on the guide rail mounting plate 16.
The guide rail mounting plate 16 is a U-shaped channel steel, one surface of the U-shaped channel steel is fixed on the bend frame reinforcing plate 15 through bolts, and the other surface of the U-shaped channel steel is fixed with the first guide rail 7; a limiting plate 17 is arranged on the turnabout frame strut 14 along the width direction of the turnabout frame strut, the limiting plate 17 is positioned above the middle of the first guide rail 7, and a cushion rubber pad 18 is fixedly arranged below the end part of the limiting plate 17; the bottom of the bend-frame support 14 is fixed with a bend-frame support fixing seat 19, and the bend-frame support 14 fixing seat is fixed on a mine shaft body 20.
As shown in fig. 9, the counterweight frame 3 includes a counterweight frame support column 21, the second pulley mechanism 9 is installed on the top of the counterweight frame support column 21, the third pulley mechanism 10 is installed on the lower portion of the counterweight frame support column 21, a counterweight body base plate 22 is fixed below the counterweight body 4, two guide shoe installation plates 23 are respectively fixed on the left side and the right side of the counterweight body base plate 22, two guide shoes 24 are fixedly installed on the two guide shoe installation plates 23, two guide rails 25 are respectively vertically installed on the left and the right counterweight frame support columns at the position of the counterweight body 4, and the two guide shoes 24 on the left and the right sides of the counterweight body 4 are respectively installed on the two guide rails 25 on the two sides in a sliding fit manner; a counterweight body cushion pad 26 is fixed on the ground right below the counterweight body 4.
As shown in fig. 9 and 10, two support rods 27 are fixed on the bottom plate 22 of the counterweight body, the support rods 27 penetrate through the counterweight body 4 and extend upwards, a slotted steel plate 28 is fixed on the top of the support rods 27, and a plurality of adjusting rope fixing blocks 29 are fixed on the slotted steel plate 28; the bottom of the counterweight frame strut 21 is fixedly provided with a counterweight frame strut fixing seat 30, and the counterweight frame strut fixing seat 30 is fixed on the ground.
As shown in fig. 11 and 12, an annular steel oil groove 31 is formed in the inner wall of the mine well body 20, a condensed water guide plate 32 which is the same as the explosion-proof cover in shape and size and smaller than the explosion-proof cover is welded in the explosion-proof cover 1, and the radius of the condensed water guide plate 32 is smaller than that of the annular steel oil groove 31. The condensed water flows into the well body along the condensed water guide plate and is prevented from flowing into the oil groove.
The outer wall of the mine well body 20 is provided with a plurality of groups of guide pulley units 33 corresponding to the plurality of direction changing frames, each group of guide pulley units 33 comprises a plurality of pulley assemblies which are arranged at intervals and located at the same height, and the adjusting rope 5 passes through the pulley mechanism I8 and then enters the pulley mechanism III 10 through the guide of the corresponding guide pulley unit 33. The adjusting rope vertically penetrates out of the first pulley mechanism and horizontally penetrates into the third pulley mechanism.
The invention analyzes the failure mode of the traditional synchronous counterweight explosion-proof door and the directed sequence diagram of the influence relationship of the failure mode as shown in figure 1.
In the figure, a T explosion vent fails, an M1_1 counterweight device fails, an M1_2 explosion-proof cover fails, an M1_3 seal fails, an M2_1 shell deforms too much, an M2_2 cannot be opened, an M2_3 shell leaks air, an M3_2 seal is damaged, a B1 return error, a B2 steel wire rope rusts, B3 pulley rusts, B4 has poor lubricating effect, B5 opens and impacts, B6 water replaces oil and evaporates, B7 oil leaks, a B8 reset error, B9 closes and impacts, B10 steel plate has insufficient thickness, B11 corrodes seriously, B12 water replaces oil and freezes, B13 seal is aged, and B15 lubricating effect is poor.
The failure mode of the synchronous counterweight explosion-proof door and the directed sequence diagram of the influence relationship of the failure mode are shown in figure 2.
The symbols in the drawings are as above
As can be seen from the reliability analysis of the explosion vent shown in the figures 1 and 2, the failure factors of the synchronous counterweight explosion vent are greatly reduced, and the reliability is greatly improved.
On the basis of the original explosion-proof cover, rubber between double frameworks 34 is removed, and a guide shoe mounting plate I13, a guide shoe I6 and a condensate water guide plate 32 are added. The first guide shoe mounting plate 13 is a rectangular plate, one end of the first guide shoe mounting plate 13 is welded on the peripheral plane of the explosion-proof cover 1, and the other end of the first guide shoe mounting plate 13 is fixed with the first guide shoe 6 through a bolt; the guide shoe I6 is a standard part; the condensate guide plate 32 is welded on the inner side of the steel plate of the explosion-proof cover.
See fig. 8. The direction changing frame 2 is additionally provided with a guide rail mounting plate 16, a first guide rail 7, a limiting plate 17 and a buffer rubber pad 18. The guide rail mounting plate 16 is a U-shaped channel steel, one surface of the U-shaped channel steel is fixed on the reinforcing plate 15 through bolts, and the other surface of the U-shaped channel steel is fixed with a first guide rail 7 which is a T-shaped standard guide rail; the limiting plate is L-shaped, one side of the limiting plate is fixedly installed on the bend frame support through bolts, and the other side of the limiting plate is provided with a buffer rubber pad which is rectangular and fixed on the lower surface of the limiting plate through screws.
The second guide rail 25 and the buffer cushion 26 of the counterweight body are added on the counterweight frame 3. The second guide rail 25 is a T-shaped standard guide rail and is fixed on the counterweight frame strut 21 by a bolt; the counterweight cushion pad 26 is rectangular and is fixed on the ground by anchor bolts embedded in the ground.
See fig. 9, 10. And a second guide shoe mounting plate 23 and a second guide shoe 24 are additionally arranged on the counterweight body. The second guide shoe mounting plate 23 is a rectangular plate, one end of the second guide shoe mounting plate is fixed on the counterweight body bottom plate 22 through a bolt, and the other end of the second guide shoe mounting plate is fixed on the second guide shoe through a bolt; the second guide shoe 24 is a standard component.
See fig. 12. The well body 20 is added with a steel oil groove 31.
The working principle of the invention is as follows:
see fig. 3. When the fan in the air shaft normally pumps air, the air in the shaft is in a negative pressure state, the resultant force of the pressure of the atmospheric pressure on the explosion-proof cover and the dead weight of the explosion-proof cover is greater than the gravity of the counterweight body, and the explosion-proof cover is in a normal closed state. When the main ventilator in the mine is damaged or gas explosion occurs in the mine, due to the gravity of the counterweight body and the explosion shock wave in the mine, the explosion-proof cover is automatically opened along the guide rail under the guide effect of the guide rail and rises to the height of the limiting plate to stop rising, and under the rubber effect of the limiting plate, the explosion-proof cover stably stops and keeps an opening state.
See fig. 9. The explosion-proof cover rises, and the counter weight body descends along the guide rail under the guide rail guiding effect, when descending to the minimum, under the blotter effect, the counter weight body steadily falls to the ground.
And thirdly, see fig. 4 and 5. The rubber between the double frameworks of the explosion-proof cover is removed and is changed into continuous welding, so that the phenomenon that the explosion-proof cover cannot be opened due to air leakage caused by rubber aging is avoided.
See figure 11. And a condensate water guide plate is added, so that the phenomenon that the explosion-proof cover cannot be opened due to icing or evaporation caused by the fact that condensate water flows into an oil groove to replace water is avoided.
See fig. 12. The steel oil groove is added, and the phenomenon that the explosion-proof cover cannot be opened due to the fact that sealing oil in the oil groove leaks into the wall body is avoided.
Claims (10)
1. The utility model provides a synchronous counter weight lid formula mine explosion vent of high reliability which characterized in that: including explosion-proof lid, a plurality of change to frame, counter weight frame, the counter weight body and many regulation ropes the above-mentioned edge part of explosion-proof lid be fixed with a plurality of boots one of leading, a plurality of change to frame quantity and position all with lead boot one corresponding, change to every and put up equal vertical guide rail of installing, a plurality of boots one respectively sliding fit install on the guide rail one rather than corresponding, change to the top of frame and all install pulley mechanism one at every, the top of counter weight frame install pulley mechanism two, install pulley mechanism three in the lower part of counter weight frame, counter weight body slidable mounting on the counter weight frame, the quantity of regulation rope with change to the quantity of frame the same, the one end of adjusting the rope is fixed on explosion-proof lid, the other end passes pulley mechanism one in proper order, pulley mechanism three and pulley mechanism two and fixes on the counter weight body.
2. The high-reliability synchronous counterweight cover type mine explosion door according to claim 1, is characterized in that: the number of the direction changing frame, the number of the first guide shoe and the number of the adjusting ropes are all 4, and the first guide shoe is uniformly distributed at the edge of the explosion-proof cover.
3. The high-reliability synchronous counterweight cover type mine explosion door according to claim 2, is characterized in that: the explosion-proof cover comprises a plurality of frameworks, one ends of the frameworks are fixedly connected, the other ends of the frameworks are distributed in a radial mode, the end portions of the frameworks are bent downwards, and steel plates are welded between every two adjacent frameworks.
4. A highly reliable synchronous counterweight cover type mine explosion vent according to claim 3, wherein: the first guide shoe is fixed on the first guide shoe mounting plate, double frameworks are arranged at positions, corresponding to the four first guide shoes, on the explosion-proof cover, and the four first guide shoe mounting plates are respectively fixed on the four double frameworks.
5. A highly reliable synchronous counterweight cover type mine explosion vent according to claim 3, wherein: the first direction-changing frame comprises a first direction-changing frame support, the first pulley mechanism is installed at the top of the first direction-changing frame support, a first direction-changing frame reinforcing plate is fixed on the side face of the first direction-changing frame support along the length direction of the first direction-changing frame support, a guide rail mounting plate is fixed on the first direction-changing frame reinforcing plate, and the first guide rail is installed on the guide rail mounting plate.
6. The high-reliability synchronous counterweight cover type mine explosion door according to claim 5, is characterized in that: the guide rail mounting plate is a U-shaped channel steel, one surface of the U-shaped channel steel is fixed on a bend frame reinforcing plate through bolts, and the other surface of the U-shaped channel steel is fixed with a first guide rail; a limiting plate is arranged on the bend frame strut along the width direction of the bend frame strut, the limiting plate is positioned above the middle upper part of the first guide rail, and a cushion rubber pad is fixedly arranged below the end part of the limiting plate; the bottom of the bend rack support is fixed with a bend rack support fixing seat which is fixed on the mine body.
7. The high-reliability synchronous counterweight cover type mine explosion door according to claim 1, is characterized in that: the counterweight frame comprises counterweight frame pillars, the second pulley mechanism is arranged at the tops of the counterweight frame pillars, the third pulley mechanism is arranged at the lower parts of the counterweight frame pillars, a counterweight body bottom plate is fixed below the counterweight body, the left side and the right side of the counterweight body bottom plate are respectively fixed with a second guide shoe mounting plate, the second guide shoe mounting plate is fixedly arranged on the second guide shoe mounting plate, the left side and the right side of the counterweight body on which the counterweight body is positioned are respectively vertically provided with a second guide rail, and the two guide shoes on the left side and the right side of the counterweight body are respectively arranged on the second guide rails on the two sides in a sliding fit manner; and a buffer pad of the counterweight body is fixed on the ground right below the counterweight body.
8. The high-reliability synchronous counterweight cover type mine explosion door according to claim 7, wherein: two support rods are fixed on the bottom plate of the counterweight body, penetrate through the counterweight body and extend upwards, a slotted steel plate is fixed at the top of each support rod, and a plurality of adjusting rope fixing blocks are fixed on the slotted steel plate; the bottom of the counterweight frame strut is fixedly provided with a counterweight frame strut fixing seat which is fixed on the ground.
9. The high-reliability synchronous counterweight cover type mine explosion door according to claim 6, wherein: the inner wall of the mine well body is provided with an annular steel oil groove, a condensed water guide plate which is smaller than the explosion-proof cover in the same size with the explosion-proof cover in shape is welded inside the explosion-proof cover, and the radius of the condensed water guide plate is smaller than that of the annular steel oil groove.
10. The high-reliability synchronous counterweight cover type mine explosion door according to claim 6, wherein: the outer wall of the mine well body is provided with a plurality of groups of guide pulley units respectively corresponding to the plurality of direction changing frames, each group of guide pulley units comprises a plurality of pulley assemblies which are arranged at intervals and located at the same height, and the adjusting rope passes through the pulley mechanism I and then enters the pulley mechanism III through the guide of the guide pulley unit corresponding to the adjusting rope.
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| CN202010353788.XA CN111648811B (en) | 2020-04-29 | 2020-04-29 | High-reliability synchronous counterweight cover type mine explosion door |
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| CN202010353788.XA CN111648811B (en) | 2020-04-29 | 2020-04-29 | High-reliability synchronous counterweight cover type mine explosion door |
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