A device for preventing collision and sudden air door in underground coal mine and its use method

Abstract

The invention discloses an anti-collision and anti-burst wind door device for underground coal mines, belonging to the technical field of mine rail transportation devices, and comprises a monorail hanging track arranged in a mine tunnel along its extension direction and an anti-burst wind door arranged on a cross section of the mine tunnel and openable and closable; a monorail hanging locomotive is installed on the monorail hanging track; the invention is characterized in that: a limit baffle which can move up and down along a direction perpendicular to the monorail hanging track is arranged at a position close to the anti-burst wind door on the monorail hanging track; a travel switch matched with the limit baffle is installed at the end of the monorail hanging locomotive; the travel switch is electrically connected to an emergency stop device on the monorail hanging locomotive; a pulley is also installed on the inner top of the mine tunnel; a steel wire rope is connected to the limit baffle through one end of the pulley, and the other end is fixed on the anti-burst wind door; a voice prompt device is also installed in the mine tunnel; the voice prompt device is connected to an external power supply through a wire, and a switch is also arranged on the wire connecting the external power supply and the voice prompt device.

Description

Technical Field

[0001] The invention relates to the technical field of mine rail transportation devices, and in particular to a device for anti-collision and anti-burst air door used in underground coal mines and a method for using the device. Background Art

[0002] The anti-blowout damper is a damper installed as a safety measure during mining operations in a mine. It can ensure the safety of miners and is a protective umbrella for miners. Currently, most of the anti-blowout dampers can only be opened and closed manually by workers. When transporting equipment or materials through the anti-blowout damper underground in a coal mine, if the driver is not concentrating and other staff members do not open the anti-blowout damper, it is easy for a monorail crane locomotive to directly hit the anti-blowout damper, damaging it and causing airflow short circuit or other accidents. This is the problem that needs to be solved at present. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a device for anti-collision and anti-burst wind door for underground coal mines and a method for using the device, so as to solve the problem that the anti-burst wind door is easily damaged by a monorail crane during transportation underground in the mine.

[0004] To solve the above problems, the present invention provides the following technical solutions:

[0005] A device for preventing collision and sudden air door in underground coal mines, comprising a monorail hanging track arranged in the mine tunnel along its extension direction and a sudden air door arranged on the cross section of the mine tunnel and openable and closable; a monorail hanging locomotive is installed on the monorail hanging track; a limit baffle which can move up and down in the direction perpendicular to the monorail hanging track is arranged at a position near the sudden air door on the monorail hanging track; a travel switch matched with the limit baffle is installed at the end of the monorail hanging locomotive; the travel switch is electrically connected to the emergency stop device on the monorail hanging locomotive; a pulley is also installed on the inner top of the mine tunnel; a steel wire rope is connected to the limit baffle through one end of the pulley, and the other end is fixed to the sudden air door; a voice prompt device is also installed in the mine tunnel; the voice prompt device is connected to an external power supply through a wire; and a switch is also arranged on the wire connecting the external power supply and the voice prompt device.

[0006] Preferably, the pulleys are two fixed pulleys; one of the fixed pulleys is arranged on the top of the travel switch; and the other fixed pulley is arranged between the limit baffle and the anti-burst damper.

[0007] Preferably, the distance between the limit baffle and the anti-burst damper is not less than 5m.

[0008] Preferably, the switch component of the anti-blowout door is a door leaf; the switch is a push-type normally open contact switch, and the switch is arranged at a position where the door leaf of the anti-blowout door contacts the inner wall of the mine tunnel after the door leaf of the anti-blowout door is opened.

[0009] A method for using an anti-collision and anti-burst air door device for underground coal mines comprises the following steps:

[0010] S1. The staff drives the monorail crane locomotive along the monorail crane track to approach the sudden air door; if the sudden air door is in a fully open state, enter S6;

[0011] S2, the travel switch on the top of the monorail crane collides with the limit baffle on the monorail crane track, and the travel switch controls the emergency stop device to perform an emergency stop brake operation on the monorail crane;

[0012] S3. After the monorail crane completely stops moving, the staff manually opens the anti-air blowout door until the door leaf of the anti-air blowout door presses on the switch set on the inner wall of the mine tunnel;

[0013] S4. The door leaf of the anti-burst door drives the limit baffle to rise through the wire rope, and the switch is closed to connect the external power supply and the voice prompt device; the voice prompt device issues a voice command prompt;

[0014] S5. After receiving the voice prompt from the voice prompt device, the staff manually closes the emergency stop device on the monorail crane, and starts the monorail crane after resetting the travel switch;

[0015] S6. Drive the monorail crane locomotive through the sudden air door.

[0016] Beneficial effects of the present invention:

[0017] The present invention improves the position of the anti-burst air door, the hanging rail track and the crane in the mine tunnel, and effectively solves the problem that the anti-burst air door is easily damaged by the monorail crane during underground transportation in the mine by arranging a limit baffle and an emergency stop device; at the same time, the present invention also provides a method for using the device, which can enable the monorail crane to safely pass through the anti-burst air door, has a simple structure, is easy to modify, has safe braking, and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention in an embodiment;

[0019] Figure 2 It is a working flow chart of the use of the device of the present invention;

[0020] Explanation of the accompanying reference numerals: 1. pulley, 2. limit baffle, 3. travel switch, 4. voice prompt device, 5. anti-sudden air door, 6. wire rope, 7. emergency stop device, 8. monorail crane locomotive, 9. monorail crane track, 10. mine tunnel, 11. switch. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0022] Example:

[0023] Reference Figure 1 It includes a monorail hanging track 9 arranged in the extension direction of the mine tunnel 10 and an openable and closable anti-burst wind door 5 arranged on the cross section of the mine tunnel 10; the monorail hanging track 8 is installed on the monorail hanging track 8; a limit baffle 2 which can move up and down along the direction perpendicular to the monorail hanging track 9 is arranged at a position close to the anti-burst wind door 5 on the monorail hanging track 9; in this embodiment, a through hole is opened on the monorail hanging track 9 along its vertical direction; the limit baffle 2 is movably installed on the monorail hanging track 9 through the through hole, and the through hole and the limit baffle 2 are both T-shaped structures of different sizes, so as to prevent the limit baffle 2 from sliding out of the through hole; a travel switch 3 matching the limit baffle 2 is installed at the end of the monorail hanging track 8; the travel switch 3 is electrically connected to the emergency stop device 7 on the monorail hanging track 8. After the emergency stop device 7 is electrically connected to the travel switch 3, the emergency stop device 7 is controlled by the travel switch 3, and can realize the emergency stop of the monorail crane; a pulley 1 is also installed on the inner top of the mine tunnel 10; the wire rope 6 is connected to the limit baffle 2 through one end of the pulley, and the other end is fixed on the anti-burst wind gate 5; the connection between the limit baffle 2 and the anti-burst wind gate is realized through the pulley 1 and the wire rope 6. When the anti-burst wind gate is opened, the wire rope 6 will drive the limit baffle 2 to rise to a position separated from the travel switch 3 on the monorail crane 8 through the pulley 1, so that the monorail crane 8 can continue to be transported through the anti-burst wind gate 5 after the anti-burst wind gate 5 is opened; in this embodiment, when the anti-burst wind gate 5 is fully opened, the limit position driven by the wire rope 6 to lift the limit baffle 2 upward does not fall out of the through hole for installing the limit baffle 2 on the monorail crane track. A voice prompt device 4 is also installed in the mine tunnel 10 ; the voice prompt device 4 is connected to an external power source via a wire; and a switch 11 is also provided on the wire connecting the external power source and the voice prompt device 4 .

[0024] The pulley 1 is composed of two fixed pulleys, one of which is arranged on the top of the travel switch 3, and the other fixed pulley is arranged between the limit baffle 2 and the anti-surge damper 5. Arranging the fixed pulley on the top of the limit baffle 2 can reduce the friction between the limit baffle 2 and the monorail hanging track, thereby increasing the service life of the device.

[0025] The distance between the limit baffle 2 and the anti-sudden wind door 5 is not less than 5m. The distance between the limit baffle 2 and the anti-sudden wind door is to prevent the monorail crane 8 from being too heavy and the limit baffle 2 triggers the travel switch to brake the emergency stop device 7, but the brake cannot be completed before colliding with the anti-sudden wind door 5. In most mine transportation rail vehicles, 5m is a relatively sufficient braking distance.

[0026] The switch component of the anti-sudden wind door 3 is a door leaf; the switch 11 is a push-type normally open contact switch, and the switch 11 is set at the position where the door leaf of the anti-sudden wind door 3 contacts the inner wall of the mine tunnel 10 after it is opened. The voice prompt device 4 in this embodiment is a recording speaker, and the voice prompt device 4 can prompt the staff on the monorail crane 8 to start the crane to continue transportation; and the push-type normally open contact switch 11 is set at the position where the door leaf of the anti-sudden wind door 3 contacts the inner wall of the mine tunnel 10 after it is opened, which can ensure that the voice prompt device 4 can be powered on for prompting only after the anti-sudden wind door 3 is fully opened.

[0027] Reference Figure 2 This embodiment also provides a method for using an anti-collision and anti-burst air door device for use in underground coal mines, comprising the following steps:

[0028] S1, the staff drives the monorail crane 8 to travel along the monorail crane track 9 to approach the anti-sudden wind door 5; if the anti-sudden wind door 5 is in a fully open state, enter S6;

[0029] S2, the travel switch 3 on the top of the monorail crane 8 collides with the limit baffle 2 on the monorail crane track 9, and the travel switch 3 controls the emergency stop device 7 to perform an emergency stop braking operation on the monorail crane 8;

[0030] S3, after the monorail crane 8 completely stops moving, the staff manually opens the anti-air door 5 until the door leaf of the anti-air door 5 presses the switch 11 arranged on the inner wall of the mine tunnel 10;

[0031] S4, the door leaf of the anti-sudden wind door 5 drives the limit baffle 2 to rise through the wire rope 6, and the switch 11 is closed to connect the external power supply and the voice prompt device 4; the voice prompt device 4 issues a voice command prompt;

[0032] S5, after receiving the voice command prompt from the voice prompt device 4, the staff manually closes the emergency stop device 7 on the monorail crane, and resets the travel switch 3 and starts the monorail crane 8;

[0033] S6, driving the monorail crane 8 through the anti-sudden wind door 5.

Claims

1. A device for preventing collision and sudden wind door in underground coal mines, comprising a monorail hanging track (9) arranged in a mine tunnel (10) along its extension direction and an anti-sudden wind door (5) arranged on a cross section of the mine tunnel (10) and openable and closable; a monorail hanging locomotive (8) is installed on the monorail hanging track (9); characterized in that: A limit baffle (2) is provided on the monorail track (9) at a position near the anti-burst wind door (5) and can move up and down in a direction perpendicular to the monorail track (9); a through hole is opened on the monorail track (9) along its vertical direction; the limit baffle (2) is movably installed on the monorail track (9) through the through hole, and the through hole and the limit baffle (2) are both T-shaped structures of different sizes, so as to prevent the limit baffle (2) from sliding out of the through hole; a matching limit baffle (2) is installed at the end of the monorail locomotive (8) The travel switch (3) is electrically connected to the emergency stop device (7) on the monorail crane (8); the emergency stop device (7) is controlled by the travel switch (3), and the emergency stop device (7) is used to control the emergency stop operation of the monorail crane; a pulley (1) is also installed on the inner top of the mine tunnel (10); one end of the wire rope (6) is connected to the limit baffle (2) through the pulley, and the other end is fixed to the anti-burst wind door (5); when the anti-burst wind door is opened, the wire rope (6) drives the limit baffle (2) to rise to the position corresponding to the limit baffle (2) through the pulley (1). The travel switch (3) on the monorail crane (8) is at a position where it is separated, so that the monorail crane (8) can continue to be transported through the anti-burst wind door (5) after the anti-burst wind door (5) is opened; when the anti-burst wind door (5) is fully opened, the limit position of the limit baffle (2) driven by the steel wire rope (6) does not fall out of the through hole on the monorail crane track where the limit baffle (2) is installed; a voice prompt device (4) is also installed in the mine tunnel (10); the voice prompt device (4) is connected to an external power supply through a wire; and when the external power supply is connected to the voice prompt device (4), the voice prompt device (4) is connected to the external power supply through a wire. A switch (11) is also provided on the wire of the sound prompt device (4); the pulley (1) is two fixed pulleys; one of the fixed pulleys is provided on the top of the travel switch (3); the other fixed pulley is provided between the limit baffle (2) and the anti-sudden wind door (5); the switch component of the anti-sudden wind door (5) is a door leaf; the switch (11) is a push-type normally open contact switch, and the switch (11) is provided at a position where the door leaf of the anti-sudden wind door (5) contacts the inner wall of the mine tunnel (10) after the door leaf is opened; the method for using the device comprises the following steps: S1, the staff drives the monorail crane (8) to travel along the monorail crane track (9) to approach the sudden wind door (5); if the sudden wind door (5) is in a fully open state, then enter S6; S2, the travel switch (3) on the top of the monorail crane (8) collides with the limit baffle (2) on the monorail crane track (9), and the travel switch (3) controls the emergency stop device (7) to perform an emergency stop brake operation on the monorail crane (8); S3, after the monorail crane (8) completely stops moving, the staff manually opens the anti-air blast door (5) until the door leaf of the anti-air blast door (5) presses against the switch (11) provided on the inner wall of the mine tunnel (10); S4, the door leaf of the anti-sudden wind door (5) drives the limit baffle (2) to rise via the steel wire rope (6), and the switch (11) is closed to connect the external power supply and the voice prompt device (4); the voice prompt device (4) issues a voice command prompt; S5, after receiving the voice command prompt from the voice prompt device (4), the staff manually closes the emergency stop device (7) on the monorail crane, and resets the travel switch (3) to start the monorail crane (8); S6, driving the monorail crane vehicle (8) through the anti-surge damper (5).

2. The device for anti-collision and anti-burst air door for underground coal mine according to claim 1 is characterized in that: The distance between the limit baffle (2) and the anti-burst door (5) is not less than 5m.

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