Linkage interlocking protection device for coal mine combined roadway air door

Abstract

The invention relates to a coal mine combined roadway air door linkage interlocking protection device which comprises two interlocking parts, each interlocking part comprises a box body, and a first gear and a second gear are installed in each box body; the first gear and the second gear are meshed with each other; the lower portion of the second gear is meshed with a rack. A first winding roller and a second winding roller are respectively fixed on the first gear and the second gear; a first drawing line and a second drawing line are respectively wound on the first winding roller and the second winding roller; and in the process of opening the second door leaf of the first air door or the first door leaf of the second air door, the second drawing line can move in the direction away from the box body, so that the second winding roller rotates, and the rack is inserted into the bolt guide rail box. The first gear and the second gear are adopted for transmission, the second gear and the gear are adopted for transmission, the problem that the two air doors are opened at the same time when personnel or vehicles pass through the air doors can be effectively solved by pulling the second drawing line, and the device is safe, reliable and easy to use.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine equipment, and in particular relates to a coal mine tunnel air door linkage interlocking protection device. Background Art

[0002] Generally, two dampers are arranged in the joint lanes of coal mines. On the one hand, this is to avoid local airflow short circuit during the passage, which will cause too much disturbance of the airflow at the working face; on the other hand, this is to avoid the problem that the damper cannot be opened due to the pressure difference between the inside and outside of the door caused by the wind pressure. Therefore, in actual use, the opening and closing of the damper is automatically completed by the electrical control system, which reduces the intensity and safety of manual opening of the damper. The two dampers are interlocked in the electrical control system, reducing the risk of local airflow short circuit. In actual use, the electrical interlocking only adds interlocking points to the electrical logic circuit, and does not realize the mechanical interlocking between the dampers, resulting in the situation where the two dampers are opened together during pedestrians or driving, causing local airflow short circuit, airflow disturbance at the working face, and affecting the stability of the overall ventilation of the mine mining area. Summary of the invention

[0003] The purpose of the present invention is to provide a coal mine joint tunnel air door linkage interlocking protection device, which can provide a safe and reliable air door interlocking device;

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A coal mine tunnel air door linkage interlocking protection device comprises two interlocking components.

[0006] The two interlocking components are respectively installed on the side of the first damper and the second damper close to each other, and are respectively arranged obliquely symmetrically on the first door leaf of the first damper and the second door leaf of the second damper; the interlocking component includes a box body,

[0007] A first gear and a second gear are installed inside the box; the first gear and the second gear are meshed with each other; a rack is meshed under the second gear; the rack runs through the box and is slidably arranged at the bottom of the box; a latch guide box is fixed on the second door leaf of the first damper and the first door leaf of the second damper; the latch guide box cooperates with the rack.

[0008] The first gear and the second gear are concentrically welded and fixed to one side with a first winding drum and a second winding drum respectively; the first winding drum and the second winding drum are respectively wound with a first pulling wire and a second pulling wire; one end of the first pulling wire is connected to the first winding drum, and the other end passes through the box and extends downward through the pulley; the end of the first pulling wire away from the first winding drum is connected to a weight; one end of the second pulling wire is connected to the second winding drum, and the other end passes through the box and extends outward; the direction in which the first pulling wire and the second pulling wire pass through the box is opposite to the direction of the latch guide rail box; the end of the second pulling wire on the first damper away from the second winding drum is connected to the first door leaf of the second damper through the pulley; the end of the second pulling wire on the second damper away from the second winding drum is connected to the second door leaf of the first damper, and in the process of opening the second door leaf of the first damper or the first door leaf of the second damper, the second pulling wire can move in a direction away from the box, so that the second winding drum rotates, and the rack is inserted into the latch guide rail box.

[0009] Preferably, the diameter of the first gear is larger than the diameter of the second gear; the diameter of the first winding drum is larger than the diameter of the second winding drum.

[0010] Preferably, a box cover is connected to one side of the box; two bearing holes are provided on the box cover; bearings of the first gear and the second gear are respectively arranged in the two bearing holes, and two bearing caps are respectively connected to the side of the two bearing holes away from the box.

[0011] The present invention adopts the first gear and the second gear transmission, the second gear and the gear transmission, when the first air door is opened, the second drawing wire of the second air door moves away from the box body, the second winding drum rotates clockwise, the second gear rotates clockwise accordingly, the rack is inserted into the latch guide rail box, the second air door is locked and cannot be opened, the first gear rotates counterclockwise, the weight rises, when the first air door is closed, the second drawing wire of the second air door is relaxed, the weight falls according to gravity, the first gear rotates clockwise, the second gear rotates counterclockwise, the rack moves away from the latch guide rail box, and the second air door is released It can be opened after leaving the locked state, which can effectively solve the problem of two dampers opening at the same time when people or vehicles pass between the dampers. When people or vehicles enter the main transport lane from the auxiliary transport lane through the connecting lane, the mechanism starts to operate when the side damper of the auxiliary transport lane is pushed. At this time, the side damper pin of the main transport lane is locked, and the side damper of the main transport lane cannot be opened. When people and vehicles enter the connecting lane, the side damper of the auxiliary transport lane begins to close under the traction of the heavy hammer. After the closing is completed, the side damper of the main transport lane is unlocked and can be opened. The procedure for entering the auxiliary transport lane from the main transport lane is the opposite. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention;

[0013] Figure 2 It is a schematic diagram of the structure of two interlocking components on the first damper and the second damper;

[0014] Figure 3 It is an exploded view of the present invention;

[0015] Figure 4 It is a schematic diagram of the box cover structure. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] like Figure 1-4 As shown, a coal mine tunnel air door linkage interlocking protection device of the present invention comprises two interlocking components 1,

[0018] The two interlocking components 1 are respectively installed on the side of the first damper 2 and the second damper 3 close to each other, and are respectively arranged obliquely symmetrically on the first door leaf of the first damper 2 and the second door leaf of the second damper 3; the interlocking component 1 includes a box body 11,

[0019] A first gear 12 and a second gear 13 are installed inside the box body 11 through a gear shaft 14 and a bearing 15; the first gear 12 and the second gear 13 are meshed with each other; a rack 16 is meshed below the second gear 13, wherein the rack 16 is slidably set in a rack guide rail 161, and the rack guide rail is fixed in the box body 11; the rack 16 runs through the box body 11 and is slidably set at the bottom of the box body 11; a latch guide rail box 4 is fixed on the second door leaf of the first damper 2 and the first door leaf of the second damper 3; the latch guide rail box 4 cooperates with the rack 16, and the rack 16 can be inserted into the latch guide rail box 4, and when the first gear 12 and the second gear 13 rotate and the rack 16 is inserted into the latch guide rail box 4, the door leaf of the damper cannot be opened.

[0020] A first winding drum 121 and a second winding drum 131 are concentrically welded and fixed to one side of the first gear 12 and the second gear 13, wherein the gear shafts 14 of the first gear 12 and the second gear 13 pass through the first winding drum 121 and the second winding drum 131; the first winding drum 121 and the second winding drum 131 are respectively wound with a first pulling wire 122 and a second pulling wire 132, wherein the first pulling wire 122 and the second pulling wire 132 can be steel wire ropes; one end of the first pulling wire 122 is connected to the first winding drum 121, and the other end passes through The box 11 extends downward through the pulley; the first pulling wire 122 is connected to a weight 5 at one end away from the first winding drum 121, and the weight 5 moves up and down, so that the first pulling wire 122 can move, thereby rotating the first winding drum 121, and the first gear 12 and the second gear 13 rotate accordingly, thereby moving the rack 16; one end of the second pulling wire 132 is connected to the second winding drum 131, and the other end passes through the box 11 and extends outward; the direction in which the first pulling wire 122 and the second pulling wire 132 pass through the box 11 is opposite to the direction of the latch guide box 4;

[0021] like Figure 2 As shown, one end of the second pull-wire 132 on the first damper 2 away from the second winding drum 131 is connected to the first door leaf of the second damper 3 through a pulley; one end of the second pull-wire 132 on the second damper 3 away from the second winding drum 131 is connected to the second door leaf of the first damper 2, and in the process of opening the second door leaf of the first damper 2 or the first door leaf of the second damper 3, the second pull-wire 132 can move in the direction away from the box body 11, so that the second winding drum 131 rotates, and the rack 16 is inserted into the latch guide rail box 4.

[0022] In this embodiment, if Figure 3 As shown, when the first damper 2 is opened, the second pull-wire 132 of the second damper 3 moves away from the box body 11, the second winding drum 131 rotates clockwise, the second gear 13 rotates clockwise accordingly, the rack 16 is inserted into the latch guide rail box 4, the second damper 3 is locked and cannot be opened, the first gear 12 rotates counterclockwise, and the weight 5 rises. When the first damper 2 is closed, the second pull-wire 132 of the second damper 3 is relaxed, the weight 5 descends according to gravity, the first gear 12 rotates clockwise, the second gear 13 rotates counterclockwise, the rack 16 moves away from the latch guide rail box 4, the second damper 3 is out of the locked state and can be opened. After the second damper 3 is opened, the locking principle of the first damper 2 is the same.

[0023] In this embodiment, the diameter of the first gear 12 is larger than that of the second gear 13; the diameter of the first winding drum 121 is larger than that of the second winding drum 131. The lifting speed of the weight 5 is reduced by the large gear and the large winding drum to avoid dangerous accidents.

[0024] In this embodiment, Figure 3 and Figure 4 As shown, a box cover 17 is connected to one side of the box 11; two bearing holes 171 are provided on the box cover 17; the two bearing holes 171 are respectively provided with bearings 15 of the first gear 12 and the second gear 13, and two bearing caps 172 are respectively connected to the side of the two bearing holes 171 away from the box 11. By arranging the bearing caps 172 of the first gear 12 and the second gear 13 on the outside of the box cover 17, it is convenient for the staff to open the cover regularly to fill oil into the bearings 15.

Claims

1. A coal mine tunnel air door linkage interlocking protection device, characterized in that: comprising two interlocking parts (1), The two interlocking components (1) are respectively installed on the side of the first damper (2) and the second damper (3) close to each other, and are respectively arranged obliquely symmetrically on the first door leaf of the first damper (2) and the second door leaf of the second damper (3); the interlocking component (1) comprises a box body (11), A first gear (12) and a second gear (13) are installed inside the box body (11); the first gear (12) and the second gear (13) are meshed with each other; a rack (16) is meshed below the second gear (13); the rack (16) passes through the box body (11) and is slidably arranged at the bottom of the box body (11); a latch guide box (4) is fixed to the second door leaf of the first damper (2) and the first door leaf of the second damper (3); the latch guide box (4) is matched with the rack (16); A first winding drum (121) and a second winding drum (131) are concentrically fixed to one side of the first gear (12) and the second gear (13); a first pulling wire (122) and a second pulling wire (132) are respectively wound around the first winding drum (121) and the second winding drum (131); one end of the first pulling wire (122) is connected to the first winding drum (121), and the other end passes through the box (11) and extends downward through a pulley; the end of the first pulling wire (122) away from the first winding drum (121) is connected to a weight (5); one end of the second pulling wire (132) is connected to the second winding drum (131), and the other end passes through the box (11) and extends outward; the first pulling wire (122) is connected to the second winding drum (131) and the second pulling wire (132) is connected to the second winding drum (131). The direction in which the pull wire (122) and the second pull wire (132) pass through the box body (11) is opposite to the direction of the latch guide rail box (4); the end of the second pull wire (132) on the first damper (2) away from the second winding drum (131) is connected to the first door leaf of the second damper (3); the end of the second pull wire (132) on the second damper (3) away from the second winding drum (131) is connected to the second door leaf of the first damper (2), and in the process of opening the second door leaf of the first damper (2) or the first door leaf of the second damper (3), the second pull wire (132) can move in a direction away from the box body (11), so that the second winding drum (131) rotates and the rack (16) is inserted into the latch guide rail box (4).

2. The coal mine tunnel air door linkage interlocking protection device according to claim 1 is characterized in that: The diameter of the first gear (12) is greater than the diameter of the second gear (13); the diameter of the first winding drum (121) is greater than the diameter of the second winding drum (131).

3. The coal mine tunnel air door linkage interlocking protection device according to claim 1 is characterized in that: A box cover plate (17) is connected to one side of the box body (11); two bearing holes (171) are provided on the box cover plate (17); bearings (15) of the first gear (12) and the second gear (13) are respectively provided in the two bearing holes (171), and two bearing caps (172) are respectively connected to the sides of the two bearing holes (171) away from the box body (11).

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