A pressure-resistant air door device for coal mines

Abstract

The present invention discloses a pressure-resistant air door device for coal mines, including a door leaf, a column, a frame crossbeam, a fixed plate, and a flexible sealing plate. The door leaf and the column hinge form an integral body, and two door leaves and columns are provided. The top of the column is connected to the frame crossbeam, and at least two fixed plates are provided on the column. Two transverse horizontal grooves are provided on the fixed plate, and bolts are installed in the transverse horizontal grooves. The bolts are connected to the tunnel wall, and the bolts are located in the middle of the transverse horizontal grooves. A vertical groove is provided on the fixed plate, and the vertical groove is located at the column, and a bolt is provided in the middle of the vertical groove. A flexible sealing plate is installed in the gap between the door leaves, and the flexible sealing plates on both sides overlap each other. The present invention is reasonably designed; the transverse horizontal groove can ensure that the door leaf and the column can move in the horizontal direction, and the sliding shoe and the vertical groove can move in the vertical direction, thereby improving the pressure resistance.

Description

Technical Field

[0001] The invention relates to a pressure-resistant air door device for coal mines. Background Art

[0002] In the mining activities of underground coal mines, in order to reasonably allocate air volume and ensure the normal operation of the mine ventilation system, it is necessary to construct dampers in some tunnels affected by dynamic pressure. However, the movement of the tunnel surrounding rock will cause the dampers to deform, resulting in air leakage due to the inability to close the dampers normally. Under traditional technology, in order to prevent air leakage from the dampers, personnel need to be regularly arranged to reshape the dampers, and sometimes even the dampers need to be replaced, which consumes a lot of manpower and material resources. In addition, the ventilation system is unstable and there are certain safety hazards. Summary of the invention

[0003] The object of the present invention is to provide a pressure-resistant air door device for coal mines to solve the above-mentioned technical problems.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A pressure-resistant air door device for coal mines comprises a door leaf, a column, a frame crossbeam, a fixed plate and a flexible sealing plate. The door leaf and the column are hinged to form a whole. There are two door leaves and two columns. The top of the column is connected to the frame crossbeam. At least two fixed plates are provided on the column. Two transverse horizontal grooves are provided on the fixed plate. Bolts are installed in the transverse horizontal grooves. The bolts are connected to the tunnel wall and are located in the middle of the transverse horizontal grooves. Vertical grooves are provided on the fixed plate. The vertical grooves are located at the column. Bolts are provided in the middle of the vertical grooves. Flexible sealing plates are installed in the gaps between the door leaves. The flexible sealing plates on both sides overlap each other.

[0006] Preferably, a slanted panel is welded to the side of the door leaf away from the column, and the two slanted panels are staggered front and rear.

[0007] Preferably, a mounting groove is provided on the frame crossbeam, the column is connected to the mounting groove, and the column is installed close to the outer end of the mounting groove, a first spring is provided on the inner side of the column, a needle is installed in the first spring, the airbag is located in the mounting groove, and the airbag and the needle are on the same side, and the airbag is filled with fluorescent powder.

[0008] Preferably, a sliding shoe is provided at the bottom of the column, the column is connected to the sliding shoe, a guide groove is provided in the sliding shoe, both sides of the column are provided with integrally formed plugs, a spring sheet is provided at the bottom of the sliding shoe, a second spring is installed on the spring sheet, and the second spring is connected to the bottom of the column.

[0009] Preferably, a second needle is welded to the bottom of the spring sheet, and a warning bag is provided at the end of the spring sheet. The warning bag is bonded to the bottom of the sliding shoe, and the warning bag is filled with fluorescent powder.

[0010] Compared with the prior art, the present invention has the following advantages: the present invention is reasonably designed; the transverse horizontal grooves on the fixed plate and the installation grooves on the frame crossbeams can ensure that the columns can move in the horizontal direction to adapt to the increase in horizontal pressure in the tunnel, and the inclined panels at the door leaves can enable the door leaves to deform to a certain extent while ensuring sealing, thereby protecting the door leaves and saving replacement and maintenance costs; the sliding shoes and the vertical grooves can enable the door leaves to deform when subjected to vertical pressure to protect the door leaves; when the deformation force in the horizontal direction is large, the first spring compresses the needle to contact the airbag to puncture the airbag, and the fluorescent powder in the airbag is scattered to remind people; when the vertical deformation is large, the second spring and the spring leaf move downward, and the second needle on the spring leaf punctures the warning bag, and the fluorescent powder in the warning bag is scattered to remind the operator or maintenance person. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the pressure-resistant air door device for coal mines of the present invention.

[0012] Figure 2 It is a partial schematic diagram of the door leaf of the pressure-resistant air door device for coal mines of the present invention.

[0013] Figure 3 It is a schematic diagram of the columns and frame beams of the pressure-resistant air door device for coal mines of the present invention.

[0014] Figure 4 It is a schematic diagram of the column and the first spring of the pressure-resistant air door device for coal mines of the present invention.

[0015] Figure 5 It is a schematic diagram of the column and the sliding shoe of the pressure-resistant air door device for coal mines of the present invention.

[0016] Figure 6 It is a schematic diagram of the spring sheet and warning bag of the pressure-resistant air door device for coal mines of the present invention. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] like Figure 1-6As shown, a pressure-resistant air door device for coal mines comprises a door leaf 1, a column 2, a frame cross beam 3, a fixing plate 4, and a flexible sealing plate 7. The door leaf 1 and the column 2 are hinged to form a whole. The door leaf 1 and the column 2 are each provided with two. The top of the column 2 is connected to the frame cross beam 3. At least two fixing plates 4 are provided on the column 2. The fixing plate 4 is provided with two transverse horizontal grooves 5. Bolts are installed in the transverse horizontal grooves 5. The bolts are connected to the tunnel wall, and the bolts are located in the middle of the transverse horizontal grooves 5. The fixing plate 4 is provided with a vertical groove 6. The vertical groove 6 is located at the column 2, and a bolt is provided in the middle of the vertical groove 6. A flexible sealing plate 7 is installed in the gap between the door leaves 1. The flexible sealing plates 7 on both sides overlap each other. An inclined panel 8 is welded on the side of the door leaf 1 away from the column 2, and the two inclined panels 8 are staggered front and rear. A mounting groove 9 is provided on the frame crossbeam 3, the column 2 is connected to the mounting groove 9, and the column 2 is installed near the outer end of the mounting groove 9, a first spring 10 is provided on the inner side of the column 2, a needle 12 is installed in the first spring 10, an airbag 11 is located in the mounting groove 9, and the airbag 11 and the needle 12 are on the same side, the airbag 11 is filled with fluorescent powder, a sliding shoe 13 is provided at the bottom of the column 2, the column 2 is connected to the sliding shoe 13, a guide groove 14 is provided in the sliding shoe 13, an integrally formed plug 15 is provided on both sides of the column 2, a spring sheet 16 is provided at the bottom of the sliding shoe 13, a second spring 17 is installed on the spring sheet 16, the second spring 17 is connected to the bottom of the column 2, a second needle 18 is welded to the bottom of the spring sheet 16, a warning bag 19 is provided at the end of the spring sheet 16, the warning bag 19 is bonded to the bottom of the sliding shoe 13, and the warning bag 19 is filled with fluorescent powder.

[0019] The above is a preferred embodiment of the present invention. For ordinary technicians in this field, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the scope of protection of the present invention.

Claims

1. A pressure-resistant air door device for coal mines, comprising a door leaf (1), a column (2), a frame beam (3), a fixing plate (4), and a flexible sealing plate (7), characterized in that: The door leaf (1) and the column (2) are hinged to form a whole. The door leaf (1) and the column (2) are each provided with two. The top of the column (2) is connected to the frame crossbeam (3). At least two fixing plates (4) are provided on the column (2). The fixing plate (4) is provided with two transverse horizontal grooves (5). Bolts are installed in the transverse horizontal grooves (5). The bolts are connected to the tunnel wall and are located in the middle of the transverse horizontal grooves (5). The fixing plate (4) is provided with a vertical groove ( 6), the vertical groove (6) is located at the column (2), and a bolt is provided in the middle of the vertical groove (6), a flexible sealing plate (7) is installed in the gap between the door leaves (1), and the flexible sealing plates (7) on both sides overlap each other, and an inclined panel (8) is welded on the side of the door leaf (1) away from the column (2), and the two inclined panels (8) are staggered in front and back, and a mounting groove (9) is opened on the frame crossbeam (3), the column (2) is connected to the mounting groove (9), and the column (2) is connected to the mounting groove (9). The column (2) is installed near the outer end of the installation groove (9), a first spring (10) is provided on the inner side of the column (2), a needle (12) is installed in the first spring (10), an air bag (11) is located in the installation groove (9), and the air bag (11) and the needle (12) are on the same side, the air bag (11) is filled with fluorescent powder, a sliding shoe (13) is provided at the bottom of the column (2), the column (2) is connected to the sliding shoe (13), a guide groove (14) is provided in the sliding shoe (13), and the column (2) is provided with a plurality of guide grooves (14). An integrally formed plug block (15) is provided on both sides of the column (2), a spring sheet (16) is provided at the bottom of the sliding shoe (13), a second spring (17) is installed on the spring sheet (16), the second spring (17) is connected to the bottom of the column (2), a second needle (18) is welded to the bottom of the spring sheet (16), a warning bag (19) is provided at the end of the spring sheet (16), the warning bag (19) is bonded to the bottom of the sliding shoe (13), and the warning bag (19) is filled with fluorescent powder.

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