Underground coal mine deep hole directional blasting quilt barrel

Abstract

The utility model provides an underground coal mine deep hole directional blasting quilt cylinder, which relates to the technical field of collapse column installation and comprises a head cover and a tail cover, a plurality of annularly distributed connecting columns are installed between the head cover and the tail cover, circular plates are installed in the connecting columns, and two ends of each connecting column are in threaded connection with sliding blocks. Annular grooves are formed in the opposite end faces of the head cover and the tail cover correspondingly, the annular grooves in the head cover and the tail cover are slidably connected with the sliding blocks correspondingly, and the sliding blocks slide in the annular grooves, so that the distance between every two adjacent connecting columns in one position can be adjusted to form an emission opening of shock waves generated during gunpowder explosion. And then the corresponding notches are machined and cut in the circular plate, the notches are aligned to the notches between the adjusted two adjacent connecting columns, then the circular plate and the connecting columns are fixed in a welding mode or other modes, and the size of the explosive impact opening of the blasting barrel can be adjusted conveniently according to actual requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of collapse column installation, in particular to a deep hole directional blasting quilt in an underground coal mine. Background Art

[0002] During coal mining, it is required that the overlying rock strata above the coal seam collapse as the coal seam is mined, that is, the roof can collapse as the coal seam is mined. However, due to the complex formation process of the overlying rock strata above the coal seam, the rock structure in different areas varies greatly. The roof of this type of rock strata is very hard and is not easy to collapse after coal seam mining. The hanging roof distance can reach more than 60m. Therefore, directional blasting technology is usually used to perform deep hole blasting on the overlying rock strata.

[0003] Therefore, a deep hole directional blasting quilt in a coal mine in the prior art, publication number: CN203687792U, includes a quilt body, an upper connecting head and a lower connecting head, a cutout is opened on one side of the quilt body, the cutout is covered with a layer of metal sheet, the metal sheet is recessed inward to form a "V"-shaped groove, the bottom of the "V"-shaped groove radially points to the center of the circle along the circumference of the quilt body, and is located at 1 / 2 of the radius.

[0004] However, when the prior art is used, the angle of the V-groove is fixed, and the amount of explosives used for blasting at different depths is also different. When the angle of the V-groove is fixed, the impact force of the directional blasting generated by more explosives and less explosives will also change, that is, the angle of the V-groove cannot change with the amount of explosives. Utility Model Content

[0005] The utility model aims to solve the problems existing in the prior art and proposes a deep hole directional blasting quilt for underground coal mines.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a deep hole directional blasting quilt for underground coal mines, comprising a head cover and a tail cover, a plurality of annularly distributed connecting columns are installed between the head cover and the tail cover, circular plates are installed in the plurality of connecting columns, and sliders are threadedly connected at both ends of the connecting columns, annular grooves are provided on the opposite end faces of the head cover and the tail cover, and the annular grooves on the head cover and the tail cover are respectively slidably connected to the sliders, a gear ring is fixedly connected to the inner side wall of the annular groove, the slider is L-shaped, and an engaging block engaged with the gear ring is inserted on one side of the slider, and a friction block for damping cooperation with the inner side wall of the annular groove is slidably connected on the other side.

[0007] Preferably, a spring support frame penetrating the slider is fixedly connected to the back of the engagement block, a screw rod is rotatably connected to the other side of the slider, and a pressure plate threadably connected to the screw rod is inserted on the other side of the slider.

[0008] Preferably, the pressure plate is arranged in a V shape, and one side of the pressure plate is arranged parallel to the side of the slider, one side of the pressure plate is slidably connected to the part of the spring support frame located on the other side of the slider, and the side of the pressure plate away from the slider is slidably connected to the surface of the friction block.

[0009] Preferably, spring rods are connected between the friction block and the slider, and between the engagement block and the inner wall of the slider, and the contact portion between the friction block and the pressure plate is arranged as an inclined surface.

[0010] Preferably, a plurality of studs are fixedly connected to one end surface of the tail cover, and a threaded barrel which corresponds to the positions of the plurality of studs one by one and is threadedly connected is embedded and rotatably connected to one end of the head cover.

[0011] Preferably, a meshing ring is fixedly connected to the outer bottom edge of the threaded cylinder, the head cover is hollow inside and is rotatably connected to an adjustment ring meshing with the meshing ring, and the head cover is also rotatably connected to a connecting gear meshing with the adjustment ring, a first spur gear meshing with the connecting gear, and a second spur gear meshing with the first spur gear.

[0012] Preferably, one end of the second spur gear is fixedly connected to a rotating rod extending to the outside of the head cover.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. In the utility model, the slider is used to slide in the annular groove, so that the distance between two adjacent connecting columns in one position can be adjusted to form a launch port for the shock wave generated when the gunpowder explodes, and then a corresponding notch is machined and cut on the circular plate, and the notch is aligned with the notch between the adjusted adjacent two connecting columns, and then the circular plate and the connecting column are fixed by welding or other methods, so that the size of the explosive impact port of the blasting quilt can be adjusted according to actual needs.

[0015] 2. In the utility model, when the head cover and the tail cover of two adjacent devices are in contact, the stud abuts against the threaded barrel, and the second spur gear is driven to rotate by rotating the rotating rod, thereby realizing the rotation of the connecting gear, and then the adjusting ring drives the meshing ring to rotate, so that the threaded barrel can be rotated, and then the stud enters the threaded barrel, that is, the head cover and the tail cover in the two adjacent devices are connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model provides a three-dimensional structural diagram of a deep hole directional blasting quill in a coal mine;

[0017] Figure 2 The utility model proposes a deep hole directional blasting tube in coal mine Figure 1 Schematic diagram of the structure viewed from above;

[0018] Figure 3The utility model proposes a deep hole directional blasting tube in coal mine Figure 1 A schematic cross-sectional structure diagram of ;

[0019] Figure 4 This is a cross-sectional view of the skull:

[0020] Figure 5 This is a schematic diagram of the slider architecture:

[0021] Figure 6 for Figure 5 Front view:

[0022] Figure 7 for Figure 4 Enlarged view of point A in the middle.

[0023] Legend: 1. Head cover; 2. Tail cover; 3. Connecting column; 4. Round plate; 5. Threaded barrel; 6. Stud; 7. Gear ring; 8. Slider; 9. Meshing ring; 10. Adjusting ring; 11. Turn bar; 12. Second spur gear; 13. First spur gear; 14. Connecting gear; 15. Meshing block; 16. Spring support frame; 17. Spring rod; 18. Pressure plate; 19. Friction block; 20. Screw; 21. Ring groove. DETAILED DESCRIPTION

[0024] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0026] like Figure 1-7As shown, a deep hole directional blasting quilt for underground coal mines comprises a head cover 1 and a tail cover 2, a plurality of annularly distributed connecting columns 3 are installed between the head cover 1 and the tail cover 2, a circular plate 4 is installed in the plurality of connecting columns 3, and sliders 8 are threadedly connected to both ends of the connecting columns 3, annular grooves 21 are provided on the opposite end faces of the head cover 1 and the tail cover 2, and the annular grooves 21 on the head cover 1 and the tail cover 2 are respectively slidably connected to the sliders 8, and the installation positions of the plurality of connecting columns 3 can be adjusted by sliding the sliders 8 in the annular grooves 21, thereby adjusting the spacing between two adjacent connecting columns 3. In actual use, the launch port of the shock wave generated by the explosion of gunpowder is formed by adjusting the spacing between two adjacent connecting columns 3 in one position, and then a corresponding notch is machined and cut on the circular plate 4, and the notch is aligned and adjusted. The gap between two adjacent connecting columns 3 is formed, and then the circular plate 4 and the connecting columns 3 are fixed by welding or other means. The connecting columns 3 at other positions can prevent other positions of the circular plate 4 from providing supporting force when the gunpowder explodes, and prevent other positions of the circular plate 4 from being deformed and damaged. The inner wall of the annular groove 21 is fixedly connected with a gear ring 7, and the slider 8 is L-shaped, and one side of the slider 8 is plugged with an engagement block 15 that engages with the gear ring 7, and the other side is slidably connected with a friction block 19 for damping cooperation with the inner wall of the annular groove 21. The engagement block 15 is used to engage the tooth surface of the gear ring 7, and the friction block 19 is used to move to the inner wall of the annular groove 21, so that a thrust can be generated on the engagement block 15, so that the engagement block 15 and the gear ring 7 maintain a bite relationship, thereby preventing the slider 8 from sliding in the annular groove 21.

[0027] In order to realize the sliding of the slider 8 in the annular groove 21: a spring support frame 16 that passes through the slider 8 is fixedly connected to the back of the engagement block 15, a screw rod 20 is rotatably connected to the other side of the slider 8, and a pressure plate 18 threadedly connected to the screw rod 20 is inserted on the other side of the slider 8, the pressure plate 18 is V-shaped, and one side of the pressure plate 18 is parallel to the side of the slider 8, one side of the pressure plate 18 is slidably connected to the part of the spring support frame 16 located on the other side of the slider 8, and the side of the pressure plate 18 away from the slider 8 is slidably connected to the surface of the friction block 19, and spring rods 17 are connected between the friction block 19 and the slider 8, and between the engagement block 15 and the inner wall of the slider 8, and the contact part between the friction block 19 and the pressure plate 18 is inclined, and the spring rods 17 are respectively used to produce the engagement block 15 and the friction block 19 The pulling force is generated to move the slider 8, so as shown in the figure, by rotating the screw rod 20, the pressure plate 18 threadedly connected to the screw rod 20 moves upward, and when the vertical surface of the pressure plate 18 is not in contact with the spring support frame 16, under the pulling force of the spring rod 17 in the slider 8, the meshing block 15 drives the spring support frame 16 to move in the direction of the friction block 19, and ensures that the spring support frame 16 slides against the inclined surface of the pressure plate 18, so that the meshing block 15 is separated from the gear ring 7. Similarly, when the pressure plate 18 rises, one side of the pressure plate 18 slides with the inclined surface of the friction block 19, and under the pulling force of the spring rod 17 outside the slider 8, the friction block 19 moves toward the slider 8 until the friction block 19 is separated from the side wall of the annular groove 21, and the slider 8 can slide in the annular groove 21.

[0028] In order to realize the splicing of several devices: a plurality of studs 6 are fixedly connected to one end face of the tail cover 2, a threaded barrel 5 corresponding to the positions of the plurality of studs 6 and threadedly connected is embedded and rotatably connected at one end of the head cover 1, a meshing ring 9 is fixedly connected to the outer bottom edge of the threaded barrel 5, the head cover 1 is hollow inside, and an adjusting ring 10 meshing with the meshing ring 9 is rotatably connected, a connecting gear 14 meshing with the adjusting ring 10 is also rotatably connected inside the head cover 1, a first spur gear 13 meshing with the connecting gear 14, a second spur gear 12 meshing with the first spur gear 13, and a rotating rod 11 extending to the outside of the head cover 1 is fixedly connected to one end of the second spur gear 12. When the head covers 1 and tail covers 2 of two adjacent devices are in contact, the studs 6 press against the threaded barrel 5, and the second spur gear 12 is driven to rotate by rotating the rotating rod 11 By utilizing the meshing connection between the first spur gear 13 and the second spur gear 12 and the connecting gear 14, the connecting gear 14 is rotated, and then the adjusting ring 10 drives the meshing ring 9 to rotate, so that the threaded barrel 5 can be rotated, and then the stud 6 can enter the threaded barrel 5, that is, the head cover 1 and the tail cover 2 in the two adjacent devices are connected, that is, the device splicing is achieved. In addition, it should be noted that a straight tooth groove is provided on the outer side of the meshing ring 9, and the straight tooth groove is press-machined on the side of the adjusting ring 10. The two straight tooth grooves are meshed to realize the adjustment ring 10 driving the meshing ring 9 to rotate, and a bevel gear ring is formed by machining a bevel tooth groove on the adjusting ring 10, and a bevel tooth groove meshed with the bevel tooth groove on the adjusting ring 10 is machined on one side of the connecting gear 14, and a straight tooth groove meshed with the first spur gear 13 is machined on the other side.

[0029] Working principle: when in use, the size of the notch on the surface of the blasting tube is calculated according to the amount of explosives used, the installation depth and the extended distance of the directional blasting, and the corresponding notch is cut on the circular plate 4, and then the position of the slider 8 is adjusted, and the slider 8 is used to slide in the annular groove 21 to adjust the installation position of the connecting column 3, so that the distance between two adjacent connecting columns 3 in a certain position is consistent with the size of the notch of the circular plate 4, and the circular plate 4 is installed in several connecting columns 3, and the notches of the two are aligned, and then the circular plate 4 is fixed in the connecting column 3. According to the depth of blasting, the threaded connection of the stud 6 and the threaded tube 5 is used to realize the assembly of several blasting tubes, and then the yellow blasting tube is placed in the drilled hole.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A deep hole directional blasting quill in a coal mine, characterized by: The invention comprises a head cover (1) and a tail cover (2), wherein a plurality of annularly distributed connecting columns (3) are installed between the head cover (1) and the tail cover (2), a circular plate (4) is installed in each of the connecting columns (3), and sliders (8) are threadedly connected to both ends of the connecting columns (3), annular grooves (21) are provided on the opposite end surfaces of the head cover (1) and the tail cover (2), and the annular grooves (21) on the head cover (1) and the tail cover (2) are respectively slidably connected to the sliders (8), the inner side walls of the annular grooves (21) are fixedly connected to a gear ring (7), the slider (8) is L-shaped, and a meshing block (15) engaged with the gear ring (7) is inserted on one side of the slider (8), and a friction block (19) for damping cooperation with the inner side wall of the annular groove (21) is slidably connected on the other side.

2. The deep hole directional blasting quill for underground coal mines according to claim 1 is characterized in that: The back of the engagement block (15) is fixedly connected to a spring support frame (16) that penetrates the slider (8); the other side of the slider (8) is rotatably connected to a screw rod (20); and the other side of the slider (8) is plugged with a pressure plate (18) that is threadedly connected to the screw rod (20).

3. The deep hole directional blasting quill for underground coal mines according to claim 2 is characterized in that: The pressure plate (18) is arranged in a V-shape, and one side of the pressure plate (18) is arranged parallel to the side of the slider (8); one side of the pressure plate (18) is slidably connected to a portion of the spring support frame (16) located on the other side of the slider (8); and the side of the pressure plate (18) away from the slider (8) is slidably connected to the surface of the friction block (19).

4. The deep hole directional blasting quill for underground coal mines according to claim 3 is characterized in that: A spring rod (17) is connected between the friction block (19) and the slider (8), and between the engagement block (15) and the inner wall of the slider (8), and the contact portion between the friction block (19) and the pressure plate (18) is arranged as an inclined surface.

5. The deep hole directional blasting quill for underground coal mine according to claim 1, characterized in that: A plurality of studs (6) are fixedly connected to one end surface of the tail cover (2), and a threaded barrel (5) corresponding to the positions of the plurality of studs (6) and threadedly connected is embedded and rotatably connected to one end of the head cover (1).

6. The deep hole directional blasting quill for underground coal mines according to claim 5, characterized in that: The outer bottom edge of the threaded barrel (5) is fixedly connected to a meshing ring (9); the head cover (1) is hollow inside and is rotatably connected to an adjustment ring (10) meshing with the meshing ring (9); the head cover (1) is also rotatably connected to a connecting gear (14) meshing with the adjustment ring (10), a first spur gear (13) meshing with the connecting gear (14), and a second spur gear (12) meshing with the first spur gear (13).

7. The deep hole directional blasting quill for underground coal mines according to claim 6, characterized in that: One end of the second spur gear (12) is fixedly connected to a rotating rod (11) extending to the outside of the head cover (1).

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