CN111648811A - A high-reliability synchronous counterweight cover type mine explosion-proof door - Google Patents

Abstract

The invention discloses a high-reliability synchronous counterweight cover type mine explosion-proof door, which includes the explosion-proof cover, a well body, a diverter frame, a counterweight frame and a counterweight body of a traditional synchronous counterweight cover type explosion-proof door, and an explosion-proof door for improving synchronization The reliability of the counterweight cover explosion-proof door, the research and development of the guiding system, the buffer device, the condensate water deflector, the steel oil tank, etc. On the basis of analyzing the reliability of the traditional synchronous cover type explosion-proof door, in order to improve the reliability of the explosion-proof cover and the movement of the counterweight, the invention adds the explosion-proof cover and the counterweight guide system; For the impact of the counterweight when it falls to the ground, increase the buffer device of the explosion-proof cover and the counterweight; in order to avoid the air leakage and failure of the explosion-proof cover caused by the aging of rubber, and to improve the strength and rigidity of the explosion-proof cover, the seal between the fan-shaped blocks of the explosion-proof cover is changed. The rubber connection is a continuous weld. The synchronous counterweight explosion-proof door of the present invention has higher reliability.

Description

A high-reliability synchronous counterweight cover type mine explosion-proof door

technical field

The invention relates to the technical field of mine ventilation systems, in particular to a high-reliability synchronous counterweight cover type mine explosion-proof door.

Background technique

The explosion-proof door is one of the most important safety components of the mine ventilation system. It is a special sealing device installed in parallel with the main ventilator at the return air wellhead. During normal ventilation, the explosion-proof door is kept closed to prevent short circuit of air flow; when the main fan stops running, the explosion-proof door is automatically opened, so that the mine with a certain natural wind pressure can be ventilated by natural wind pressure; when an explosion occurs in the underground, the explosion-proof door is impacted by gas , automatically open to protect the fan from damage.

The main failure modes of traditional cover-type explosion-proof doors are as follows: because there is no limit and guide device, when an explosion occurs in the mine, the explosion-proof cover may be blown away, causing the explosion-proof cover to be distorted, deformed, or even damaged, and the explosion-proof cover may not be properly reset. When the explosion-proof cover is opened, the counterweight will have a huge impact on the ground; in long-term use, the rubber between the fan-shaped blocks of the explosion-proof cover will age, causing the explosion-proof cover to leak air and cannot be opened; the temperature inside the well is higher than the air temperature, and the inside of the explosion-proof cover A large amount of condensed water accumulates on the surface and flows into the oil tank, which will cause the sealing oil in the oil tank to be replaced by the condensed water, and the evaporation or freezing of the condensed water will prevent the explosion-proof cover from opening; the well body is made of cement, so that the sealing oil in the oil tank will seep The leakage of the sealing oil will cause the explosion-proof cover to fail to open.

SUMMARY OF THE INVENTION

The purpose of the present invention is to make up for the defects of the prior art, and to provide a high-reliability synchronous counterweight cover type mine explosion-proof door.

The present invention is achieved through the following technical solutions:

A high-reliability synchronous counterweight cover type mine explosion-proof door includes an explosion-proof cover, a plurality of redirecting frames, a counterweight frame, a counterweight body and a plurality of adjustment ropes, and a top edge of the explosion-proof cover is fixed with a A plurality of guide shoes, the number and position of the plurality of redirecting frames are corresponding to the first guiding shoes, and a guide rail is vertically installed on each redirecting frame, and the plurality of guide shoes are one They are respectively installed on the corresponding guide rails in a sliding fit. The first pulley mechanism is installed on the top of each diverter frame, the second pulley mechanism is installed on the top of the counterweight frame, and the lower part of the counterweight frame is installed with Pulley mechanism 3, the counterweight body is slidably installed on the counterweight frame, the number of the adjustment ropes is the same as the number of the diverter frame, one end of the adjustment rope is fixed on the explosion-proof cover, and the other end passes through the pulley mechanism 1 in turn. , the third pulley mechanism and the second pulley mechanism are fixed on the counterweight.

The number of the redirecting frame, the first guide shoe and the adjusting rope are all four, and the first guide shoe is evenly distributed at the edge of the explosion-proof cover.

The explosion-proof cover includes a plurality of frames, one end of the plurality of frames is fixedly connected, the other end is radially distributed, and the ends are bent downward, and steel plates are welded between two adjacent frames.

The first guide shoe is fixed on the first guide shoe mounting plate, the explosion-proof cover is provided with double skeletons at the positions corresponding to the four guide shoes 1, and the four guide shoe mounting plates 1 are respectively fixed on the four double skeletons.

The diverter frame includes a diverter frame strut, the pulley mechanism is installed on the top of the diverter frame strut, and a diverter frame reinforcement is fixed on the side of the diverter frame strut along the length direction of the diverter frame strut. A guide rail mounting plate is fixed on the steering frame reinforcing plate, and the guide rail is first installed on the guide rail mounting plate.

The guide rail mounting plate is U-shaped channel steel, one side is fixed on the reinforcing plate of the diverter frame by bolts, and the other side is fixed on the guide rail one; on the diverter frame pillar along its width direction, a limit plate is installed, and the limit plate is located on the guide rail. A buffer rubber pad is fixedly installed under the end of the limit plate at the top of the first one; the bottom of the diverter frame is fixed with a diverter post fixed seat, and the diverter post fixed seat is fixed on the mine shaft.

The counterweight frame includes a counterweight frame pillar, the second pulley mechanism is installed on the top of the counterweight frame pillar, the third pulley mechanism is installed on the lower part of the counterweight frame pillar, and a counterweight body bottom plate is fixed under the counterweight body. , Guide shoe mounting plate II is fixed on the left and right sides of the base plate of the counterweight body, guide shoe II is fixedly installed on the guide shoe mounting plate II, and guide rails are installed vertically on the left and right side of the counterweight frame column where the counterweight body is located. Second, the two guide shoes on the left and right sides of the counterweight are respectively installed on the two guide rails on both sides in a sliding fit; the counterweight cushion is fixed on the ground directly below the counterweight.

Two support rods are fixed on the bottom plate of the counterweight body, the support rods pass through the counterweight body and extend upward, a groove-shaped steel plate is fixed on the top of the support rod, and a plurality of adjusting rope fixing blocks are fixed on the groove-shaped steel plate; The bottom of the counterweight frame pillar is fixedly installed with a counterweight frame pillar fixing seat, and the counterweight frame pillar fixing seat is fixed on the ground.

The inner wall of the mine shaft is provided with an annular steel oil groove, and a condensate water guide plate with the same shape as the explosion-proof cover and smaller than the explosion-proof cover is welded inside the explosion-proof cover, and the radius of the condensed water guide plate is smaller than that of the annular steel Sump radius.

The outer wall of the mine shaft is provided with a plurality of groups of guide pulley units corresponding to the plurality of redirecting frames, each group of guide pulley units includes a plurality of pulley assemblies arranged at intervals and located at the same height, and the adjustment rope After passing through the pulley mechanism 1, it is guided by the corresponding guide pulley unit and enters the pulley mechanism 3.

The advantages of the present invention are: 1. The present invention adds guide rails and guide shoes for the explosion-proof cover and the counterweight, which solves the problem of unbalanced rise or fall of the explosion-proof cover and the counterweight;

2. In the present invention, a limit buffer device is installed on the diverter frame to avoid the possibility of the explosion-proof cover being blown away when an explosion occurs in the mine.

3. In the present invention, a buffer pad is added to the counterweight to avoid the impact when the counterweight falls to the ground.

4. The present invention removes the rubber between each sector block of the explosion-proof cover, and avoids the failure of the explosion-proof cover due to air leakage caused by the aging of the rubber.

5. The present invention adds a condensed water deflector, so that the condensed water directly falls into the wellbore, avoiding the phenomenon that the sealing oil is replaced, thereby avoiding the phenomenon that the explosion-proof cover fails due to air leakage from the oil tank.

6. The present invention is equipped with a steel oil tank to prevent the leakage of the sealing oil, thereby avoiding the phenomenon that the explosion-proof cover cannot be opened due to the leakage of the sealing oil.

Description of drawings

Figure 1 is a directed sequence diagram of the failure mode of traditional synchronous counterweight explosion-proof door and its influence relationship;

Fig. 2 is a directed sequence diagram of the failure mode of the synchronous counterweight explosion-proof door of the present invention and its influence relationship;

Figure 3 is a schematic diagram of the overall assembly of the explosion-proof door;

Figure 4 is the overall frame diagram of the explosion-proof cover;

Fig. 5 is a partial enlarged view of Fig. 4;

Figure 6 is the overall assembly diagram of the explosion-proof cover;

Figure 7 is a schematic diagram of the assembly of the explosion-proof cover guide shoe;

Figure 8 is a schematic diagram of the overall assembly of the redirector;

9 is a schematic diagram of the assembly of a counterweight frame and a counterweight body;

Figure 10 is a schematic diagram of the assembly of the counterweight guide rail guide shoe;

Figure 11 is a schematic diagram of the assembly of the drainage plate;

Figure 12 is a schematic diagram of a well body and a steel oil tank.

Detailed ways

As shown in FIG. 3 , a high-reliability synchronous counterweight cover type mine explosion-proof door includes an explosion-proof cover 1 , a plurality of diverting frames 2 , a counterweight frame 3 , a counterweight body 4 and a plurality of adjustment ropes 5 . The upper edge of the explosion-proof cover 1 is fixed with a plurality of guide shoes 1 6, and the number and position of the plurality of redirection frames 2 are corresponding to the guide shoes 1 6. On each of the redirection frames 2 Guide rails one 7 are installed vertically, and the plurality of guide shoes one 6 are respectively installed on the corresponding guide rails one 7 in a sliding fit, and a pulley mechanism one 8 is installed on the top of each diverter frame 2. The top of the counterweight frame 3 is provided with a pulley mechanism 2 9, the lower part of the counterweight frame 3 is provided with a pulley mechanism 3 10, the counterweight body 4 is slidably installed on the counterweight frame 3, and the adjustment rope 5 One end of the adjusting rope 5 is fixed on the explosion-proof cover 1, and the other end passes through the pulley mechanism one 8, the pulley mechanism three 10 and the pulley mechanism two 9 in turn and is fixed on the counterweight body 4.

The number of the diverter frame 2 , the guide shoe one 6 and the adjusting rope 5 are all four, and the guide shoe one 6 is evenly distributed on the edge of the explosion-proof cover 1 .

As shown in Figures 4, 5, 6 and 7, the explosion-proof cover includes a plurality of skeletons 11, one end of the plurality of skeletons 11 is fixedly connected, the other end is radially distributed, and the ends are bent downwards. A steel plate 12 is welded between the two skeletons 11.

The guide shoe one 6 is fixed on the guide shoe mounting plate one 13, and the positions corresponding to the four guide shoes one 6 on the explosion-proof cover 1 are provided with double frames 34. As shown in Figures 4 and 5, the four guide shoes are installed. The first plate is fixed on the four double frames 34 respectively. Increase the strength of the explosion-proof cover 1 to prevent the skeleton from breaking when the explosion-proof cover 1 is pulled up.

As shown in FIG. 8 , the diverter frame 2 includes a diverter frame strut 14 , and the pulley mechanism 1 8 is installed on the top of the diverter frame strut 14 , along the side of the diverter frame strut 14 . A diverter frame reinforcing plate 15 is fixed along the length direction of the frame pillar 14 , a guide rail mounting plate 16 is fixed on the diverter frame reinforcing plate 15 , and the guide rail 1 7 is installed on the guide rail installation plate 16 .

The guide rail mounting plate 16 is U-shaped channel steel, one side is fixed on the diverter frame reinforcing plate 15 by bolts, and the other side is fixed on the guide rail one 7; on the diverter frame pillar 14 along its width direction, a limit plate 17 is installed, The limit plate 17 is located in the upper middle of the guide rail 7, and a buffer rubber pad 18 is fixedly installed under the end of the limit plate 17; The support post 14 is fixed on the shaft body 20 of the mine.

As shown in FIG. 9 , the counterweight frame 3 includes a counterweight frame column 21 , the second pulley mechanism 9 is installed on the top of the counterweight frame column 21 , and the pulley mechanism 3 10 is installed on the top of the counterweight frame column 21 . In the lower part, a counterweight body bottom plate 22 is fixed under the counterweight body 4, a guide shoe mounting plate two 23 is fixed on the left and right sides of the counterweight body bottom plate 22, and a guide shoe two 24 is fixedly mounted on the guide shoe mounting plate two 23. Two guide rails 25 are installed vertically on the left and right counterweight frame pillars where the counterweight body 4 is located, respectively, and the two guide shoes 24 on the left and right sides of the counterweight body 4 are installed on the two guide rails 25 on both sides in a sliding fit; A counterweight body cushion 26 is fixed to the ground directly below the weight body 4 .

As shown in Figures 9 and 10, two support rods 27 are fixed on the counterweight body bottom plate 22, the support rods 27 pass through the counterweight body 4 and extend upward, and a grooved steel plate 28 is fixed on the top of the support rods 27, A plurality of adjusting rope fixing blocks 29 are fixed on the grooved steel plate 28 ; a counterweight frame column fixing seat 30 is fixedly installed at the bottom of the counterweight frame column 21 , and the counterweight frame column fixing seat 30 is fixed on the ground.

As shown in Figures 11 and 12, an annular steel oil groove 31 is provided on the inner wall of the mine shaft 20, and a condensed water deflector 32 having the same shape as the explosion-proof cover and a size smaller than the explosion-proof cover is welded inside the explosion-proof cover 1, so The radius of the condensed water guide plate 32 is smaller than the radius of the annular steel oil groove 31 . Make the condensed water flow into the well body along the condensed water guide plate to prevent it from flowing into the oil tank.

A plurality of sets of guide pulley units 33 corresponding to a plurality of redirecting frames are provided on the outer wall of the mine shaft 20, and each set of guide pulley units 33 includes a plurality of pulley assemblies arranged at intervals and located at the same height , the adjusting rope 5 passes through the pulley mechanism one 8 and then passes through the guide of the corresponding guide pulley unit 33 , and enters the pulley mechanism three 10 . Make sure that the adjustment rope goes out vertically from the pulley mechanism 1 and penetrates into the pulley mechanism 3 horizontally.

The directed order diagram of the failure mode of the traditional synchronous counterweight explosion-proof door and its influence relationship analyzed by the present invention is shown in FIG. 1 .

In the figure, T explosion-proof door fails, M1_1 counterweight device fails, M1_2 explosion-proof cover fails, M1_3 seal fails, M2_1 shell deformation is too large, M2_2 cannot be opened, M2_3 shell leaks, M3_2 seal is damaged, B1 return error, B2 steel wire rope Rusty, B3 pulley corroded, B4 poor lubrication, B5 opening shock, B6 water replacing oil and evaporating, B7 oil leaking, B8 reset error, B9 closing shock, B10 steel plate thickness not enough, B11 severe corrosion, B12 water replacing oil And icing, B13 seal aging, B15 lubrication effect is not good.

The directed sequence diagram of the failure mode of the synchronous counterweight explosion-proof door of the present invention and its influence relationship is shown in FIG. 2 .

The symbols in the figure are the same as above

It can be seen from the reliability analysis of the explosion-proof door in FIG. 1 and FIG. 2 that the factors causing the failure of the synchronous counterweight explosion-proof door of the present invention are greatly reduced, and the reliability is greatly improved.

On the basis of the original explosion-proof cover, the rubber between the double skeletons 34 is removed, and a guide shoe mounting plate 13, a guide shoe 6, and a condensate water guide plate 32 are added. The guide shoe mounting plate one 13 is a rectangular plate, one end of the guide shoe mounting plate one 13 is welded on the peripheral plane of the explosion-proof cover 1, and the other end is fixed with the guide shoe one 6 by bolts; the guide shoe one 6 is a standard part; The condensed water guide plate 32 is welded on the inner side of the explosion-proof cover steel plate.

See Figure 8. In the redirection frame 2, a guide rail mounting plate 16, a guide rail one 7, a limit plate 17, and a buffer rubber pad 18 are added. The guide rail mounting plate 16 is a U-shaped channel steel, one side of which is fixed on the reinforcing plate 15 by bolts, and the other side is fixed to the guide rail 1 7, and the guide rail 1 is a T-shaped standard guide rail; One side is fixed and installed on the steering frame pillar by bolts, and the other side is installed with a buffer rubber pad. The buffer rubber pad is rectangular and fixed on the lower surface of the limit plate by screws.

In the counterweight frame 3, two guide rails 25 and a counterweight body buffer pad 26 are added. The second guide rail 25 is a T-shaped standard guide rail, which is fixed on the counterweight frame pillar 21 by bolts; the counterweight body buffer pad 26 is rectangular, and is fixed on the ground by anchor bolts pre-buried on the ground.

See Figure 9 and Figure 10. For the counterweight, a guide shoe mounting plate two 23 and a guide shoe two 24 are added. The second guide shoe mounting plate 23 is a rectangular plate, one end of which is fixed on the counterweight bottom plate 22 by bolts, and the other end is fixed by bolts to the second guide shoe; the second guide shoe 24 is a standard part.

See Figure 12. In the well body 20, a steel oil tank 31 is added.

The working principle of the present invention:

1. See Figure 3. When the fan in the air shaft draws air normally, the air in the shaft is in a negative pressure state, the combined force of the atmospheric pressure on the explosion-proof cover and the self-weight of the explosion-proof cover is greater than the weight of the counterweight, and the explosion-proof cover is in a normal closed state. When the main ventilator in the mine is damaged or a gas explosion occurs in the mine, due to the weight of the counterweight and the shock wave of the explosion in the mine, the explosion-proof cover is automatically opened along the guide rail under the guidance of the guide rail, and rises to the height of the limit plate to stop rising. Under the action of rubber at the limit plate, the explosion-proof cover stops smoothly and remains open.

two. See Figure 9. The explosion-proof cover rises, and the counterweight descends along the guide rail under the guiding action of the guide rail. When it descends to the lowest point, the counterweight body falls smoothly under the action of the buffer pad.

three. See Figure 4 and Figure 5. The rubber between the double skeletons of the explosion-proof cover is removed and replaced by continuous welding, which avoids the phenomenon that the explosion-proof cover cannot be opened due to air leakage due to the aging of the rubber.

Four. See Figure 11. The condensed water deflector is added to avoid the phenomenon that the condensed water flows into the oil tank to replace the water, which causes freezing or evaporation and prevents the explosion-proof cover from being opened.

five. See Figure 12. The steel oil tank is added to avoid the phenomenon that the sealing oil in the oil tank leaks into the wall and the explosion-proof cover cannot be opened.

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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