Self-falling type ditch headwind prevention device for coal mine

Abstract

The utility model discloses a coal mine self-falling type ditch headwind prevention device which comprises a reverse water tank and an air door wall body arranged in the reverse water tank, an insertion plate is arranged on one side of the air door wall body close to a coal mine tunnel, a zipper is connected to the insertion plate, a lock pin is connected to the zipper, and the lock pin is connected to the reverse water tank. A locking plate used for fixing the lock pin is arranged on the air door wall body, the inserting plate is hung above a reverse water opening of a reverse water tank through the locking plate and the lock pin, a windward plate hinged to the air door wall body is arranged above the lock pin, and the windward plate is kept in a downward inclined posture through an elastic rope. And the windward plate is used for impacting the lock pin and separating the lock pin from the locking plate. When gas outburst or explosion occurs in a mine, the water ditch can be automatically blocked in time, and then poisonous and harmful gas such as gas can be effectively prevented from flowing back outwards through the water ditch.

Description

Technical Field

[0001] The utility model relates to the field of coal and gas outburst mines, in particular to a self-falling water ditch anti-wind device for coal mines. Background Art

[0002] The damper wall installed in the mine shaft is mainly used to block the air inlet and return routes, and serves the purpose of pedestrians and transportation. However, in order to ensure the outflow of water in the tunnel, a ditch must be left under the damper. In coal and gas outburst mines, the wind flow is reversed, and toxic and harmful gases flow back outward through the ditch, causing the scope of the accident to expand. Therefore, the ditch installed under the tunnel damper becomes the biggest threat to wind flow reversal and toxic and harmful gas backflow. Therefore, how to prevent toxic and harmful gases from flowing back outward through the ditch when the mine is gas outburst has become a research direction for technicians in this field. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a self-falling water ditch anti-wind device for coal mines to solve the technical problems raised in the above-mentioned background technology.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A self-falling ditch anti-wind device for coal mines comprises a ditch and a damper wall arranged on the upper part of the ditch, wherein a plug plate is arranged on the side of the damper wall close to the coal mine shaft, a zipper is connected to the plug plate, a locking pin is connected to the zipper, a locking plate for fixing the locking pin is arranged on the damper wall, the plug plate is suspended above the ditch through the locking plate and the locking pin, a windward plate hinged on the damper wall is arranged above the locking pin, the windward plate is kept in a downward tilted posture by an elastic rope, and the windward plate is used to hit the locking pin and make the locking pin detach from the locking plate.

[0006] In the above utility model, further, an ear wall is arranged at the bottom of the damper wall near the coal mine shaft, and two relatively arranged fixed plates are installed on the ear wall. The inner sides of the two fixed plates are provided with guide grooves formed by angle steels, and the plug plate is placed in the guide grooves.

[0007] In the above-mentioned utility model, further, a fixing frame is installed on the outer wall of the damper wall near the coal mine shaft, and a first angle steel group and a second angle steel group respectively formed by two angle steels are fixed on the inner side of the fixing frame, and a first rotating shaft and a second rotating shaft are respectively connected between the first angle steel group and the second angle steel group, a first fixed pulley is installed on the first rotating shaft, and a second fixed pulley is installed on the second rotating shaft, and the zipper passes around the first fixed pulley and the second fixed pulley in sequence and is connected to the locking pin.

[0008] In the above utility model, further, a mounting plate is provided on the fixing frame, a locking plate is fixedly mounted on the mounting plate, a through hole is provided on the locking plate, and a locking pin is horizontally inserted into the through hole.

[0009] In the above utility model, further, the first fixed pulley is arranged just above the edge of the ear wall.

[0010] The beneficial effects of the utility model are:

[0011] The utility model can automatically and timely block the water ditch when gas outburst or explosion occurs in the mine, thereby effectively preventing poisonous and harmful gases such as gas from flowing back outward through the water ditch. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 This is a schematic diagram of the plug board connection structure of the utility model;

[0014] Figure 3 This is the structural principle diagram of the utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the fixing frame of the utility model.

[0016] In the figure, 1-windward plate, 2-locking pin, 3-first fixed pulley, 4-fixed frame, 5-plug plate, 6-guide slide groove, 7-air door wall, 8-ditch, 9-ear wall, 10-zipper, 11-locking plate, 12-elastic rope, 13-fixed plate, 14-second fixed pulley, 15-installation plate. DETAILED DESCRIPTION

[0017] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0018] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0019] Example:

[0020] A self-falling water ditch anti-wind device for coal mines, see attached Figure 1 As shown, it includes a ditch 8 and a damper wall 7 arranged on the upper part of the ditch 8, and a plug plate 5 is arranged on the side of the damper wall 7 near the coal mine. Figure 2 As shown, the bottom of the air door wall 7 near the coal mine shaft is provided with an ear wall 9, on which two oppositely arranged fixing plates 13 are installed, and the inner sides of the two fixing plates 13 are provided with a guide slot 6 formed by angle steel, and the insert plate 5 is placed in the guide slot 6, see the attached Figure 1 and attached Figure 3 As shown, a zipper 10 is connected to the plug plate 5, and a lock pin 2 is connected to the zipper 10. A locking plate 11 for fixing the lock pin 2 is provided on the damper wall 7. The plug plate 5 is suspended above the ditch 8 through the locking plate 11 and the lock pin 2. A windward plate 1 hinged to the damper wall 7 is provided above the lock pin 2. The windward plate 1 is maintained in a downwardly inclined posture by an elastic rope 12. More specifically, a through hole is provided on the locking plate 11, and the lock pin 2 is horizontally inserted into the through hole. The windward plate 1 is used to hit the lock pin 2 and make the lock pin 2 detach from the through hole on the locking plate 11.

[0021] Continue to refer to the attached Figure 3 and attached Figure 4 As shown, a fixing frame 4 is installed on the outer wall of the air door wall 7 near the coal mine shaft side, and a mounting plate 15 is arranged on the fixing frame 4. The locking plate 12 is fixedly installed on the mounting plate 15. A first angle steel group and a second angle steel group respectively formed by two angle steels are fixed on the inner side of the fixing frame 4. A first rotating shaft and a second rotating shaft are respectively connected between the first angle steel group and the second angle steel group. A first fixed pulley 3 is installed on the first rotating shaft, and a second fixed pulley 14 is installed on the second rotating shaft. The zipper 10 bypasses the first fixed pulley 3 and the second fixed pulley 14 in turn and is connected to the locking pin 2. The first fixed pulley 3 is arranged just above the edge of the ear wall 9 to ensure that the plug plate 5 can fit the outer wall edge of the ear wall 9 as much as possible, thereby strengthening the sealing of the plug plate 5 to the ditch 8.

[0022] In the specific use of the utility model, the plug plate 5 is first inserted into the guide chute 6, and then the zipper 10 is connected to the plug plate 5, one end of the zipper 10 is connected to the lock pin 2, the zipper 10 is passed around the first fixed pulley 3 and the second fixed pulley 14 in sequence, and the lock pin 2 is inserted into the through hole of the locking plate 11, and then the plug plate 5 is hung above the ditch 8. When a gas outburst or explosion occurs in the mine, a strong airflow or shock wave overcomes the pull of the elastic rope 12 to make the windward plate 1 rotate downward and hit the lock pin 2, and the lock pin 2 is separated from the through hole on the locking plate 11 under the impact, and the plug plate 5 falls under its own gravity, thereby blocking the ditch 8. The effect of preventing toxic and harmful gases such as gas from flowing back outward through the ditch 8 is achieved.

[0023] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A self-falling water ditch anti-wind device for coal mines, comprising a water ditch and a wind gate wall arranged on the upper part of the water ditch, characterized in that: A plug plate is provided on the side of the damper wall near the coal mine, a zipper is connected to the plug plate, a locking pin is connected to the zipper, a locking plate for fixing the locking pin is provided on the damper wall, the plug plate is suspended above the ditch through the locking plate and the locking pin, a windward plate hinged on the damper wall is provided above the locking pin, the windward plate is maintained in a downward tilted posture by an elastic rope, and the windward plate is used to hit the locking pin and cause the locking pin to detach from the locking plate.

2. A self-falling water ditch anti-wind device for coal mines according to claim 1, characterized in that: An ear wall is arranged at the bottom of the damper wall near the coal mine shaft, and two relatively arranged fixing plates are installed on the ear wall. The inner sides of the two fixing plates are provided with guide grooves formed by angle steels, and the plug plate is placed in the guide grooves.

3. A self-falling water ditch anti-wind device for coal mines according to claim 2, characterized in that: A fixing frame is installed on the outer wall of the damper wall near the coal mine shaft, and a first angle steel group and a second angle steel group respectively formed by two angle steels are fixed on the inner side of the fixing frame, and a first rotating shaft and a second rotating shaft are respectively connected between the first angle steel group and the second angle steel group, a first fixed pulley is installed on the first rotating shaft, and a second fixed pulley is installed on the second rotating shaft, and the zipper passes through the first fixed pulley and the second fixed pulley in sequence and is connected to the locking pin.

4. A self-falling water ditch anti-wind device for coal mines according to claim 3, characterized in that: The fixing frame is provided with a mounting plate, the locking plate is fixedly mounted on the mounting plate, the locking plate is provided with a through hole, and the locking pin is horizontally sleeved in the through hole.

5. The self-falling water ditch anti-wind device for coal mines according to claim 3 is characterized in that: The first fixed pulley is arranged just above the edge of the ear wall.

Images