CN220487532U

CN220487532U - Blast hole dredging device

Info

Publication number: CN220487532U
Application number: CN202321441651.5U
Authority: CN
Inventors: 张丁丁; 梁银冠
Original assignee: Shandong Energy Group Northwest Mining Co ltd
Current assignee: Shandong Energy Group Northwest Mining Co ltd
Priority date: 2023-06-07
Filing date: 2023-06-07
Publication date: 2024-02-13
Anticipated expiration: 2033-06-07

Abstract

The utility model discloses a blast hole dredging device, which comprises a threaded pipe with internal threads and external threads at two ends, wherein a steel wire rope is arranged in the threaded pipe in a penetrating way, one end of the steel wire rope is connected with a dredging mechanism at the outer side of the threaded pipe, a spring is sleeved at the outer side of the steel wire rope, one end of the spring is abutted with the dredging mechanism, and the other end of the spring is abutted with the threaded pipe; the inner wall of the threaded pipe is fixedly connected with a pull rod at a position close to the dredging structure, and the pull rod is movably connected with the dredging mechanism away from the threaded pipe. The blast hole dredging device disclosed by the utility model can be used for efficiently cleaning the blocked mudstone in the blast hole, is simple to operate, and reduces the labor intensity of workers.

Description

Blast hole dredging device

Technical Field

The utility model belongs to the technical field of blasting equipment, and particularly relates to a blast hole dredging device.

Background

The existing rock burst prevention measures mainly comprise large-diameter pressure relief drilling pressure relief of a coal bed and rock burst pressure relief of a key layer of the coal bed. The method comprises the steps of determining a key horizon which causes rock burst accidents according to occurrence conditions of overlying strata of a coal bed, coal mining thickness, rock breaking and expanding conditions and the like, blasting the key horizon, destroying the integrity and continuity of hard thick strata of the key horizon, reducing limit span of the key horizon, and fundamentally solving high static load generated by hanging roof of large-area hard thick strata and dynamic load generated by breaking the key horizon after the key horizon reaches the limit span.

The key point of the technology is to reasonably determine the key positions causing rock burst accidents and effectively process the key positions. However, due to the fact that multiple layers of rock strata are covered on the coal seam, lithology is inconsistent, in the blasting drilling construction process, the drilling holes are often blocked by the fact that mud strata and mud rocks expand after meeting water, gunpowder cannot be sent to the key positions, the key positions cannot be blasted, and treatment measures fail. The existing blast hole blocking treatment measures are that the hydraulic drilling machine is used for drilling again, which is equivalent to drilling construction of drilling again, the construction difficulty is high, the efficiency is low, the labor intensity is high, and the waste of personnel and property is caused.

Disclosure of Invention

The utility model aims to provide a blast hole dredging device which can efficiently clean blocked mudstones in a blast hole, is simple to operate and reduces the labor intensity of workers.

The technical scheme adopted by the utility model is that the blast hole dredging device comprises a threaded pipe with internal threads and external threads at two ends, wherein a steel wire rope is arranged in the threaded pipe in a penetrating way, one end of the steel wire rope is connected with a dredging mechanism at the outer side of the threaded pipe, a spring is sleeved at the outer side of the steel wire rope, one end of the spring is abutted with the dredging mechanism, and the other end of the spring is abutted with the threaded pipe; the inner wall of the threaded pipe is fixedly connected with a pull rod at a position close to the dredging structure, and one end of the pull rod, far away from the threaded pipe, is movably connected with the dredging mechanism.

Further, one end of the pull rod, which is far away from the threaded pipe, is movably connected with a sliding block.

Further, the dredging mechanism comprises a connecting column with one end connected with the steel wire rope, the other end of the connecting column is connected with a fixed block, a reset chute is formed in the side wall of the connecting column along the axial direction, and the sliding block moves in the reset chute so as to drive the pull rod to move close to and away from the reset motion of the fixed block, a water through hole is formed in the connecting column, the water through hole penetrates through the connecting column and the fixed block, and a water pipe is connected to the connecting column corresponding to the water through hole.

Further, the whole hemisphere that is of fixed block, the rigid coupling has a plurality of thorn on the curved surface of fixed block, the plane and the spring butt of fixed block, the spliced pole is located the spring inboard and with the plane rigid coupling of fixed block.

Further, the threaded pipe is close to the outside of dredging mechanism and is sleeved and fixed with a limiting ring, one end of the spring is abutted against the plane of the fixed block, and the other end of the spring is abutted against the limiting ring.

Further, the reset chute is Y-shaped and comprises an advancing groove and a reset groove, one ends of the advancing groove and the reset groove are mutually communicated, the other ends of the advancing groove and the reset groove are communicated through a U-shaped groove, and the opening direction of the U-shaped groove is consistent with the opening direction of the reset chute;

the reset groove is linear and is arranged along the extension direction of the pull rod, a concave part is formed in one end, close to the pull rod, of the reset groove, the concave part is flush with the bottom of the advancing groove, and the inner wall, close to one side of the reset groove, of the concave part is obliquely arranged towards the advancing groove.

Further, the groove depth of the advancing groove gradually decreases along the direction away from the concave part, one end of the advancing groove away from the concave part is provided with a guide groove for introducing the sliding block into the U-shaped groove, the groove depth of one end of the advancing groove away from the concave part is smaller than the groove depth of the guide groove, and the groove depth of the guide groove is equal to the groove depth of the U-shaped groove.

Further, the outer arc concave point of the U-shaped groove is close to the reset groove, the inner arc concave point of the U-shaped groove is close to the advancing groove, and the groove depth of the reset groove is not smaller than the groove depth of the U-shaped groove.

Further, one end of the steel wire rope, which is far away from the dredging mechanism, is connected with a handle.

Compared with the prior art, the utility model has the beneficial effects that,

(1) According to the utility model, the dredging mechanism is fixed at the final hole position after drilling is finished, when the explosive charge is needed, the steel wire rope is pulled out of the dredging mechanism through the handle, so that the dredging of the blasthole can be realized, the dredging is not needed to be re-drilled by a drilling machine, the labor intensity of workers is reduced, and the working efficiency is greatly improved.

(2) In the process of taking out the dredging mechanism, water is supplied into the blasthole through the water pipe, so that on one hand, the water pressure in the blasthole is increased, on the other hand, the water also plays a role in lubrication, the running resistance of the dredging mechanism is reduced, and the dredging effect is enhanced.

(3) The utility model firstly clamps the dredging mechanism with a pull rod fixedly connected in the threaded pipe, places the sliding block at the position of the U-shaped groove, then sends the dredging mechanism to the position of the final hole, drives the dredging mechanism by pulling the steel wire rope, enables the sliding block to move to the position of the reset groove, and pierces the thorns of the dredging mechanism into the inner wall of the final hole under the action of elasticity of the spring; the working strength is lightened while the thorn stabbing and fixing effect is ensured.

Drawings

FIG. 1 is a schematic view of a blast hole dredging apparatus according to the present utility model;

FIG. 2 is a schematic structural view of a dredging structure in the blast hole dredging device of the utility model;

FIG. 3 is a cross-sectional view of a dredging structure in the blast hole dredging apparatus of the present utility model.

In the figure, a threaded pipe 1, a steel wire rope 2, a water pipe 3, a handle 4, a spring 5, a pull rod 6, a sliding block 7, a limiting ring 8, a dredging mechanism 9, a connecting column 10, a fixing block 11, a thorn 12, a water through hole 13, a forward groove 14, a reset groove 15, a U-shaped groove 16, a guide groove 17, a concave part 18 and a guide surface 19.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The structure of the blast hole dredging device is shown in figure 1, the blast hole dredging device comprises a threaded pipe 1 with internal threads and external threads at two ends, the whole length of an extension pipe body is connected through a plurality of threaded pipes 1, a dredging mechanism 9 is conveniently conveyed to a designated position, a steel wire rope 2 and a water pipe 3 are arranged inside the threaded pipe 1 in a penetrating manner, the blast hole dredging device can also be replaced by other high-toughness ropes, the water pipe 3 is a soft rubber pipe, one end of the steel wire rope 2 is connected with the dredging mechanism 9, the other end of the steel wire rope 2 is connected with a handle 4, the dredging mechanism 9 and the handle 4 are both positioned at the outer side of the threaded pipe 1 and are positioned at two ends of the threaded pipe 1, and the handle 4 is convenient for grabbing and pulling the dredging mechanism 9 during dredging. The inner wall of the threaded pipe 1 is fixedly connected with a pull rod 6 at a position close to the dredging structure 9, and one end of the pull rod 6 far away from the threaded pipe 1 is movably connected with the dredging structure 9.

One end of the steel wire rope 2 connected with the dredging mechanism 9 is sleeved with a spring 5, one end of the spring 5 is abutted with the dredging mechanism 9, the other end of the spring is abutted with a limiting ring 8 fixedly connected to the side wall of the threaded pipe 1, and the limiting ring 8 is only arranged at one end of the threaded pipe 1 closest to the spring 5.

As shown in fig. 2, the dredging mechanism 9 comprises a connecting column 10 connected with the steel wire rope 2, the connecting column 10 is connected with a fixed block 11, a reset chute is formed in the side wall of the connecting column 10 along the axial direction, a water through hole 13 is formed in the connecting column 10, the water through hole 13 penetrates through the connecting column 10 and the fixed block 11, and the connecting column 10 is connected with the water pipe 3 at a position corresponding to the water through hole 13. The water pipe 3 supplies water to the blastholes, so that the water pressure in the blastholes is increased, the water also plays a lubricating role, the running resistance of the dredging mechanism 9 is reduced, and the dredging effect is enhanced.

The whole fixed block 11 is a hemisphere, the diameter of the fixed block 11 is slightly smaller than the diameter of a blast hole, a plurality of thorns 12 are fixedly connected to the curved surface of the fixed block 11, the plane of the fixed block 11 is abutted to the spring 5, and the connecting column 10 is located on the inner side of the spring 5 and fixedly connected with the plane of the fixed block 11.

As shown in fig. 3, one end of the pull rod 6 far away from the threaded pipe 1 is movably connected with a sliding block 7, and the pull rod 6 is a flexible rod body, so that when the pull rod 6 longitudinally moves linearly, the sliding block 7 can slide in the reset chute, thereby driving the pull rod 6 to complete the reciprocating motion near to and far from the fixed block; the reset chute is Y-shaped and comprises an advancing chute 14 and a reset chute 15, one ends of the advancing chute 14 and the reset chute 15 are mutually communicated, the other ends of the advancing chute 14 and the reset chute 15 are connected through a U-shaped chute 16, the opening orientation of the U-shaped chute 16 is consistent with that of the reset chute, the reset chute 15 is linear and is arranged along the extending direction of the pull rod 6, one end, close to the pull rod 6, of the reset chute 15 is provided with a concave part 18, the concave part 18 is flush with the bottom of the advancing chute 14, and the inner wall, close to one side of the reset chute 15, of the concave part 18 is obliquely arranged towards the advancing chute 14; the guide surfaces 19 are formed on two sides of the U-shaped groove 16, the outer arc concave points of the U-shaped groove 16 are closer to the reset groove 15 than the inner arc concave points, so that when the steel wire rope 2 is pulled to slide the sliding block 7, the outer arc concave points and the inner arc concave points of the U-shaped groove 16 are misplaced, the sliding block 7 can only slide to the reset groove 15 from the U-shaped groove 16, and the groove depth of the reset groove 15 is not smaller than that of the U-shaped groove 16.

The groove depth of the advancing groove 14 gradually decreases along the direction away from the concave part 18, one end of the advancing groove 14 away from the concave part 18 is provided with a guide groove 17 for guiding the sliding block 7 into the U-shaped groove 16, the groove depth of one end of the advancing groove 14 away from the concave part 18 is smaller than the groove depth of the guide groove 17, and the groove depth of the guide groove 17 is equal to the groove depth of the U-shaped groove 16.

That is, the sliding block 7 slides into the advancing groove 14 from the position of the concave part 18 under the action of force, the sliding block 7 falls into the guiding groove 17 along with the gradual reduction of the groove depth of the advancing groove 14, the force is removed, the sliding block 7 can only enter the position of the U-shaped groove 16 along the guiding groove 17 because the groove depth of the guiding groove 17 is larger than the groove depth of the advancing groove 14, the force is applied again, and the sliding block 7 slides to the reset groove 15 along the U-shaped groove 16 and then returns to the position of the concave part 18.

When the utility model works, a worker clamps the dredging mechanism 9 with the pull rod 6, specifically stretches the connecting column 10 into the inner side of the spring 5, so that the sliding block 7 is arranged at the concave part 18 of the reset chute, at the moment, the plane of the fixed block 11 is abutted with one end of the spring 5, the whole dredging mechanism 9 is pushed to the direction of the threaded pipe 1 by the hard object against the thorn 12, the sliding block 7 slides to the terminal of the advancing groove 14 and falls into the guide groove 17, the dredging mechanism 9 is loosened, the sliding block 7 slides to the outer arc concave point position of the U-shaped groove 16 along the guide groove 17, the dredging mechanism 9 is clamped, and the spring 5 is in a compressed state.

The method comprises the steps that a plurality of threaded pipes 1 are connected together until the length is enough to convey a dredging mechanism 9 to the depth of a blasting hole, after drilling is completed, the dredging mechanism 9 is conveyed into the blasting hole through the connected threaded pipes 1, a handle 4 is grasped to pull a steel wire rope 2 after the specified position is reached, a sliding block 7 obliquely collides with an inner arc concave point of a U-shaped groove 16, the sliding block 7 moves into the resetting groove 15 along with the effect of the groove depth fall of the resetting groove 15 and the U-shaped groove 16, the handle 4 is loosened, under the effect of elastic potential energy of a spring 5, the dredging mechanism 9 pops out, a thorn 12 is pricked into the blasting hole wall, the dredging mechanism 9 is fixed in the blasting hole, and the threaded pipe 1 is taken out.

When the explosive loading blasting is needed, one end of the water pipe 3 is connected with a water source, water flows out from the curved surface position of the fixed block 11, the dredging mechanism 9 is pulled by the handle 4, mud rock which swells with water in the blasting hole flows out from the blasting hole after being scraped off by the fixed block 11, full-hole penetration of the blasting hole is realized, and the explosive loading can be carried out after the dredging mechanism 9 is taken out from the blasting hole.

Claims

1. The blast hole dredging device comprises a threaded pipe (1) with internal threads and external threads at two ends, and is characterized in that a steel wire rope (2) is arranged in the threaded pipe (1) in a penetrating manner, a dredging mechanism (9) is connected to one end of the steel wire rope (2) and located on the outer side of the threaded pipe (1), a spring (5) is sleeved on the outer side of the steel wire rope (2), one end of the spring (5) is abutted to the dredging mechanism (9), and the other end of the spring is abutted to the threaded pipe (1); the inner wall of the threaded pipe (1) is fixedly connected with a pull rod (6) close to the dredging mechanism (9), and one end, far away from the threaded pipe (1), of the pull rod (6) is movably connected with the dredging mechanism (9).

2. The blast hole dredging device according to claim 1, wherein one end of the pull rod (6) far away from the threaded pipe (1) is movably connected with a sliding block (7).

3. The blast hole dredging device according to claim 2, wherein the dredging mechanism (9) comprises a connecting column (10) with one end connected with a steel wire rope (2), the other end of the connecting column (10) is connected with a fixed block (11), a reset chute is formed in the side wall of the connecting column (10) along the axial direction, the sliding block (7) moves in the reset chute, so that the pull rod (6) is driven to perform reciprocating motion close to and far away from the fixed block (11), a water through hole (13) is formed in the connecting column (10), the water through hole (13) penetrates through the connecting column (10) and the fixed block (11), and a water pipe (3) is connected to the position of the connecting column (10) corresponding to the water through hole (13).

4. A blast hole dredging device according to claim 3, wherein the whole fixed block (11) is a hemispherical body, a plurality of thorns (12) are fixedly connected on the curved surface of the fixed block (11), the plane of the fixed block (11) is abutted with the spring (5), and the connecting column (10) is positioned at the inner side of the spring (5) and fixedly connected with the plane of the fixed block (11).

5. The blast hole dredging device according to claim 4, wherein the threaded pipe (1) is sleeved and fixed with a limiting ring (8) close to the outer side of the dredging mechanism (9), one end of the spring (5) is abutted against the plane of the fixed block (11), and the other end of the spring is abutted against the limiting ring (8).

6. The blast hole dredging device according to any one of claims 3-5, wherein the reset chute is Y-shaped and comprises an advancing chute (14) and a reset chute (15) with one end mutually communicated, the other ends of the advancing chute (14) and the reset chute (15) are communicated through a U-shaped chute (16), and the opening orientation of the U-shaped chute (16) is consistent with the opening orientation of the reset chute;

the reset groove (15) is linear and is arranged along the extension direction of the pull rod (6), a concave part (18) is formed in one end, close to the pull rod (6), of the reset groove (15), the concave part (18) is flush with the bottom of the advancing groove (14), and the inner wall, close to one side of the reset groove (15), of the concave part (18) is obliquely arranged towards the advancing groove (14).

7. The blast hole dredging device according to claim 6, wherein the groove depth of the advancing groove (14) gradually decreases along the direction away from the concave part (18), a guide groove (17) for guiding the sliding block (7) into the U-shaped groove (16) is formed at one end of the advancing groove (14) away from the concave part (18), the groove depth of one end of the advancing groove (14) away from the concave part (18) is smaller than the groove depth of the guide groove (17), and the groove depth of the guide groove (17) is equal to the groove depth of the U-shaped groove (16).

8. The blast hole dredging apparatus according to claim 7, wherein the outer arc concave point of the U-shaped groove (16) is close to the reset groove (15), the inner arc concave point of the U-shaped groove (16) is close to the advancing groove (14), and the groove depth of the reset groove (15) is not smaller than the groove depth of the U-shaped groove (16).

9. The blast hole dredging device according to claim 1 or 2, wherein a handle (4) is connected to one end of the steel wire rope (2) far away from the dredging mechanism (9).