Blast hole blocking device

Abstract

The utility model relates to the technical field of blasting, and particularly discloses a blasthole blocking device. The device comprises a threaded rod, an elastic blocking sleeve, a first limiting block and a second limiting block, the upper end and the lower end of the threaded rod are each provided with a section of external thread in the opposite direction, the threaded rod sequentially penetrates through the first limiting block, the elastic blocking sleeve and the second limiting block, and the two ends of the elastic blocking sleeve abut against the first limiting block and the second limiting block respectively; the initial state of the elastic blocking sleeve is a free state, the first limiting block and the second limiting block are located on two sections of external threads of the threaded rod correspondingly and are in threaded connection with the threaded rod, the first limiting block and the second limiting block are in sliding connection with the inner wall of the blast hole, and the first limiting block and the second limiting block are close to each other when the threaded rod is rotated. And the elastic blocking sleeve is compressed, so that the periphery of the elastic blocking sleeve abuts against the inner wall of the blast hole. The blasthole blocking device can block blastholes with different hole diameters, and the applicability of the blocking device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of blasting, in particular to a blasting hole plugging device. Background Art

[0002] In mining and road construction projects, it is necessary to blast hard-to-break mountain rocks. During the blasting work, holes need to be drilled at the blasting points and then filled with explosives. In order to concentrate the blasting force of the explosives, the blasting holes need to be sealed during blasting.

[0003] For example, a Chinese utility model patent with publication (announcement) number CN220454426U discloses a blasting hole sealing device, which hammers the sealing plug into the blasting hole by providing a knocking part provided on the sealing plug, and the anti-slip ridges provided on the sealing plug increase the friction between the sealing plug and the inner wall of the blasting hole, so that the sealing plug can seal the blasting hole more firmly.

[0004] Since the apertures of blasting holes are different, the existing plugging devices cannot be applied to blasting holes with different apertures, which reduces the compatibility of the plugging devices with the blasting holes and affects the blasting effect. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model aims to provide a blasting hole plugging device to improve the applicability of the plugging device.

[0006] The technical solution adopted by the utility model is:

[0007] A blasting hole plugging device comprises a threaded rod, an elastic plugging sleeve, a first limit block and a second limit block, wherein the upper and lower ends of the threaded rod are respectively provided with an external thread in opposite directions, the threaded rod passes through the first limit block, the elastic plugging sleeve and the second limit block in sequence, the two ends of the elastic plugging sleeve are respectively abutted against the first limit block and the second limit block, the initial state of the elastic plugging sleeve is a free state, the first limit block and the second limit block are respectively located at the two sections of the external thread of the threaded rod and are threadedly connected to the threaded rod, the first limit block and the second limit block are slidably connected to the inner wall of the blasting hole, the threaded rod is rotated, the threaded rod rotates relative to the first limit block and the second limit block, the first limit block and the second limit block move in a direction approaching each other, the elastic plugging sleeve is compressed, and the outer periphery of the elastic plugging sleeve is tightly abutted against the inner wall of the blasting hole.

[0008] The first limit block and the second limit block are driven to approach each other by rotating the threaded rod, and the elastic blocking sleeve is compressed so that the outer side of the elastic blocking sleeve is pressed against the blasting hole, and the elastic blocking sleeve blocks the blasting hole. The elastic blocking sleeve can be extended and retracted at will. The blasting hole blocking device can block blasting holes of different apertures, thereby improving the applicability of the blocking device.

[0009] Optionally, the first limit block is arranged at the top end of the threaded rod, the first limit block is arranged in a truncated cone shape, the cross-sectional area of ​​the first limit block gradually decreases from top to bottom, and the side surface of the first limit block abuts against the hole wall of the blasting hole.

[0010] The side surface of the first limiting block abuts against the opening of the blasting hole, which facilitates the positioning of the blocking device.

[0011] Optionally, a sliding groove is provided on the inner wall of the blasting hole along the axial direction of the blasting hole, and a sliding rod is provided on the side wall of the second limit block, one end of the sliding rod is connected to the second limit block, and the other end of the sliding rod is inserted into the sliding groove, and the second limit block is slidably connected to the blasting hole through the cooperation of the sliding rod and the sliding groove.

[0012] Optionally, a limiting member is arranged in the elastic blocking sleeve, and the limiting member includes two limiting rods, the two ends of the limiting rods close to each other are hinged, and the two ends of the limiting rods away from each other are respectively hinged to the two sides of the first limiting block and the second limiting block close to each other, the first limiting block and the second limiting block approach each other and drive the hinge points of the two limiting rods to move in the direction away from the threaded rod.

[0013] The limiting piece reduces the depression of the elastic sleeve toward the direction close to the threaded rod when compressed, thereby improving the blocking effect of the elastic blocking sleeve on the blasting hole.

[0014] Optionally, the limiting members are provided in multiple groups, and the multiple groups of limiting members are arranged along the circumferential direction of the threaded rod.

[0015] A plurality of groups of limiting parts limit the elastic plugging sleeve, further reducing the depression of the elastic plugging sleeve toward the threaded rod, thereby improving the plugging effect of the elastic plugging sleeve on the blasting hole.

[0016] Optionally, a through hole is opened in the axial direction of the threaded rod, and a lead wire passes through the interior of the through hole.

[0017] Optionally, a turntable is provided at the top of the threaded rod, and the turntable is sleeved on the outer circumference of the threaded rod.

[0018] The beneficial effects of the utility model are: by rotating the threaded rod, the first limit block and the second limit block are driven to approach each other, and the elastic blocking sleeve is compressed, so that the outer side of the elastic blocking sleeve is pressed against the blasting hole, and the elastic blocking sleeve blocks the blasting hole. The elastic blocking sleeve can be extended and retracted at will, and can be pressed against the inner wall of the blasting hole with different apertures. After the blasting is completed, the threaded rod can be rotated in the opposite direction to be removed. The blasting hole blocking device can block blasting holes with different apertures, thereby improving the applicability of the blocking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the limiter of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the elastic blocking sleeve of the utility model in a free state;

[0022] Figure 4 It is a schematic diagram of the structure of the elastic blocking sleeve of the utility model in a compressed state.

[0023] The numbers and names in the figure correspond to each other as follows: 1. threaded rod; 11. through hole; 12. stopper; 2. elastic blocking sleeve; 3. first limit block; 4. second limit block; 5. slide groove; 6. slide rod; 7. limit rod; 8. turntable. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4 , the utility model provides a technical solution:

[0026] A blasting hole plugging device comprises a threaded rod 1, an elastic plugging sleeve 2, a first limit block 3 and a second limit block 4. The upper and lower ends of the threaded rod 1 are respectively provided with an external thread in opposite directions. The threaded rod 1 passes through the first limit block 3, the elastic plugging sleeve 2 and the second limit block 4 in sequence. A through hole 11 is provided in the axial direction of the threaded rod 1, and a lead wire passes through the inside of the through hole 11. A turntable 8 is fixedly connected to the top of the threaded rod 1, and a stopper 12 is fixedly connected to the bottom of the threaded rod 1. The turntable 8 is sleeved on the outer periphery of the threaded rod 1.

[0027] The first limit block 3 and the second limit block 4 are respectively connected to the threaded rod 1 with external threads at both ends of the threaded rod 1, the first limit block 3 is arranged at the top end of the threaded rod 1, the first limit block 3 is arranged to be truncated cone-shaped, the cross-sectional area of ​​the first limit block 3 gradually decreases from top to bottom, the side surface of the first limit block 3 abuts against the opening of the blasting hole, the side wall of the second limit block 4 is fixedly connected with a slide rod 6, the inner wall of the blasting hole is provided with a slide groove 5 adapted to the slide rod 6 along the axial direction of the blasting hole, the other end of the slide rod 6 is respectively inserted into the slide groove 5, the second limit block 4 is slidably connected with the blasting hole through the cooperation of the slide rod 6 and the slide groove 5.

[0028] The upper and lower ends of the elastic blocking sleeve 2 are respectively bonded to the first limit block 3 and the second limit block 4. The initial state of the elastic blocking sleeve 2 is a free state. The threaded rod 1 is rotated clockwise, and the threaded rod 1 rotates relative to the first limit block 3 and the second limit block 4. The first limit block 3 and the second limit block 4 move toward each other and compress the elastic blocking sleeve 2. The outer periphery of the elastic blocking sleeve 2 is pressed against the inner wall of the blasting hole to block the blasting hole. The elastic blocking sleeve 2 can be extended and retracted at will. The blasting hole blocking device can block blasting holes of different apertures, thereby improving the applicability of the blocking device.

[0029] In order to reduce the phenomenon of the elastic blocking sleeve 2 sinking inward when being compressed, a limiting member is arranged in the elastic blocking sleeve 2, and the limiting member includes two limiting rods 7. The two ends of the two limiting rods 7 close to each other are hinged, and the two ends of the two limiting rods 7 far away from each other are respectively hinged to the two sides of the first limiting block 3 and the second limiting block 4 close to each other. The first limiting block 3 and the second limiting block 4 are close to each other and drive the intersection point of the two limiting rods 7 to move in the direction away from the threaded rod 1. There are multiple groups of limiting members, and the multiple groups of limiting members are arranged along the circumferential direction of the threaded rod 1, which further improves the sealing effect of the elastic blocking sleeve 2 on the blasting hole.

[0030] Finally, it should be noted that the above description is only a preferred example of the present utility model and is not intended to limit the present utility model. Although the present utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A blast hole plugging device, characterized in that: The invention comprises a threaded rod (1), an elastic blocking sleeve (2), a first limit block (3) and a second limit block (4); the upper and lower ends of the threaded rod (1) are respectively provided with an external thread in opposite directions; the threaded rod (1) passes through the first limit block (3), the elastic blocking sleeve (2) and the second limit block (4) in sequence; the two ends of the elastic blocking sleeve (2) are respectively in contact with the first limit block (3) and the second limit block (4); the initial state of the elastic blocking sleeve (2) is a free state; the first limit block (3) and the second limit block (4) are The positioning blocks (4) are respectively located at the external threads at both ends of the threaded rod (1) and are threadedly connected to the threaded rod (1). The first positioning block (3) and the second positioning block (4) are slidably connected to the inner wall of the blasting hole. When the threaded rod (1) is rotated, the threaded rod (1) rotates relative to the first positioning block (3) and the second positioning block (4). The first positioning block (3) and the second positioning block (4) move in a direction approaching each other, compressing the elastic blocking sleeve (2) so that the outer periphery of the elastic blocking sleeve (2) is tightly pressed against the inner wall of the blasting hole.

2. A blast hole plugging device according to claim 1, characterized in that: The first limit block (3) is arranged at the top end of the threaded rod (1); the first limit block (3) is arranged in a truncated cone shape; the cross-sectional area of ​​the first limit block (3) gradually decreases from top to bottom; and the side surface of the first limit block (3) abuts against the wall of the blasting hole.

3. A blast hole plugging device according to claim 1, characterized in that: The inner wall of the blasting hole is provided with a slide groove (5) along the axial direction of the blasting hole, and the side wall of the second limit block (4) is provided with a slide rod (6), one end of the slide rod (6) is connected to the second limit block (4), and the other end of the slide rod (6) is inserted into the slide groove (5), and the second limit block (4) is slidably connected to the blasting hole through the cooperation of the slide rod (6) and the slide groove (5).

4. A blast hole plugging device according to claim 1, characterized in that: A limiting member is arranged inside the elastic blocking sleeve (2), and the limiting member comprises two limiting rods (7). The two ends of the limiting rods (7) that are close to each other are hinged, and the two ends of the limiting rods (7) that are far away from each other are respectively hinged to the two sides of the first limiting block (3) and the second limiting block (4) that are close to each other. The first limiting block (3) and the second limiting block (4) are close to each other and drive the hinge points of the two limiting rods (7) to move in a direction away from the threaded rod (1).

5. A blast hole plugging device according to claim 4, characterized in that: The position-limiting members are provided in multiple groups, and the multiple groups of position-limiting members are arranged along the circumferential direction of the threaded rod (1).

6. The blast hole plugging device according to claim 1, characterized in that: A through hole (11) is provided in the axial direction of the threaded rod (1), and a lead wire passes through the interior of the through hole (11).

7. The blast hole plugging device according to claim 1, characterized in that: A rotating disk (8) is arranged on the top of the threaded rod (1), and the rotating disk (8) is sleeved on the outer circumference of the threaded rod (1).

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