Semi-arc hole sweeping device for zero-dip-angle blast hole in high-stress coal seam environment

Abstract

The utility model relates to the technical field of coal mining and blasting, in particular to a semi-arc type hole sweeping device for a zero-dip-angle blasthole in a high-stress coal seam environment, which comprises a holding pipe, a stud is fixedly connected to the rear end of the holding pipe, a first threaded pipe is in threaded connection with the outer wall of the stud, a cylinder is fixedly connected to the rear end of the first threaded pipe, and a second threaded pipe is fixedly connected to the rear end of the cylinder. A connecting column is attached to the inner wall of the barrel, a guide mechanism and an elastic part are arranged between the connecting column and the barrel, a sector plate is fixedly connected to the rear end of the connecting column, an arc-shaped shell is attached to the edge of the upper portion of the outer wall of the sector plate, and a fixing mechanism is arranged between the arc-shaped shell and the sector plate. According to the device, coal and rock debris on the upper half circumference of a drill hole can be scraped down firstly, then coal and rock debris on the lower half circumference of the drill hole can be scraped out of the drill hole, the cleaning and dredging effects are good, operation is easy, and the problems that in the later period, blasting charge is not in place, blasting engineering is delayed, labor is wasted, and the difficulty of disaster control engineering is increased are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coal mining and blasting, in particular to a half-arc type hole sweeping device for zero-degree angle blasting hole in high stress coal seam environment. BACKGROUND

[0002] According to the "regulations for preventing and treating coal mine impact pressure" and relevant requirements, the coal mine underground mining site should be pre-unloading pressure treatment to the mining and mining activity area, and reduce stress concentration. The traditional working face adopts large diameter pressure relief drilling to unload pressure, with the gradual replacement of the excavation and anchoring process (integrated process of excavation and anchoring) by the comprehensive excavation process (integrated mechanized excavation process), the traditional unloading process under the condition of rapid excavation is not applicable, and the coal body blasting unloading process replaces the large diameter drilling unloading process. In the case of complex geological conditions such as fault and structure, multiple structure stress superposition, the construction of blasting hole and blasting in the rear of fast excavation head-on are tested.

[0003] In the above background, the fast excavation head-on blasting hole blasting construction under the condition of multiple stress superposition is difficult, low in efficiency, and has serious rework phenomenon, and other influencing factors, so it is necessary to design a half-arc type hole sweeping device for zero-degree angle blasting hole in high stress coal seam environment to simply clean the drilling hole, reduce the problems of late blasting charge out of position, blasting engineering delay, artificial waste and increase the difficulty of disaster control engineering. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a half-arc type hole sweeping device for zero-degree angle blasting hole in high stress coal seam environment to solve the problems in the above background.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a half-arc type hole sweeping device for zero-degree angle blasting hole in high stress coal seam environment, comprising a holding pipe, the rear end of the holding pipe is fixedly connected with a stud, the outer wall of the stud is threadedly connected with a threaded pipe one, the rear end of the threaded pipe one is fixedly connected with a cylinder, the inner wall of the cylinder is attached with a connecting column, the connecting column and the cylinder are respectively provided with a guide mechanism and an elastic piece, and the rear end of the connecting column is fixedly connected with a fan-shaped plate, the outer wall upper edge of the fan-shaped plate is attached with an arc-shaped shell, the arc-shaped shell and the fan-shaped plate are provided with a fixing mechanism, and the outer arc surface of the arc-shaped shell is fixedly connected with an arc-shaped scraper, the lower center of the fan-shaped plate is fixedly connected with a connecting cylinder, the inner wall of the connecting cylinder is attached with a supporting column, the supporting column and the connecting cylinder are respectively provided with a limiting mechanism and an elastic piece, and the bottom end of the supporting column is fixedly connected with a universal wheel, and the front end of the holding pipe is fixedly connected with a threaded pipe two.

[0006] Preferably, the guide mechanism comprises two sliding blocks I and two sliding grooves I, the two sliding blocks I are symmetrically and fixedly connected at the front edges of the outer walls of the connecting columns, and the two sliding grooves I are respectively formed in the inner walls of the cylinders and correspond to the two sliding blocks I.

[0007] Preferably, the elastic member comprises a spring I, one end of the spring I is fixedly connected to the inner front end face of the cylinder, and the other end of the spring I is fixedly connected to the front end of the connecting column.

[0008] Preferably, the fixing mechanism comprises two knob screws and two screw holes, the two knob screws are symmetrically and screwed through the lower front edges of the arc-shaped shells, the two screw holes are respectively formed in the front ends of the fan-shaped plates and correspond to the two knob screws, and the two screw holes are respectively and threadedly connected with the two knob screws.

[0009] Preferably, the limiting mechanism comprises two sliding blocks II and two sliding grooves II, the two sliding blocks II are symmetrically and fixedly connected at the upper edges of the outer walls of the supporting columns, and the two sliding grooves II are respectively formed in the inner walls of the connecting cylinders and correspond to the two sliding blocks II.

[0010] Preferably, the elastic member comprises a spring II, one end of the spring II is fixedly connected to the inner top end face of the connecting cylinder, and the other end of the spring II is fixedly connected to the top end of the supporting column.

[0011] Compared with the prior art, the device can scrape off the coal and rock debris on the upper half circle of the drill hole first, and then scrape out the coal and rock debris on the lower half circle of the drill hole from the drill hole, so that the cleaning and dredging effect is good, the operation is simple, and problems such as out-of-position of the blasting charge, delay of the blasting engineering, waste of labor and increase of the difficulty of disaster control engineering are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a schematic view of the overall structure of the utility model;

[0013] Figure 2 It is a display view of the holding pipe, the threaded pipe II and the stud of the utility model;

[0014] Figure 3 It is a partial sectional view of the utility model;

[0015] Figure 4 It is a Figure 3 structure enlarged view of A in the middle;

[0016] Figure 5 The utility model discloses a Figure 3 The structure of B is enlarged in the middle.

[0017] Figure 6 The utility model discloses an arc shell and arc scraper.

[0018] In the drawings, the component list represented by each sign is as follows: 1, holding tube;2, threaded tube one;3, cylinder;4, connecting column;5, fan-shaped plate;6, arc shell;7, arc scraper;8, knob screw;9, connecting cylinder;10, support column;11, universal wheel;12, threaded tube two;13, stud;14, spring one;15, screw hole;16, spring two;17, sliding block one;18, sliding slot one;19, sliding block two;20, sliding slot two. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] Embodiment one: please refer to Figure 1 - Figure 6 The half-arc type hole sweeping device for the zero-degree angle blasting hole in the high stress coal seam environment in the drawing includes a holding tube 1, the rear end of the holding tube 1 is fixedly connected with a stud 13, the outer wall of the stud 13 is threadedly connected with a threaded tube one 2, the rear end of the threaded tube one 2 is fixedly connected with a cylinder 3, the inner wall of the cylinder 3 is attached with a connecting column 4, a guide mechanism and an elastic piece are arranged between the connecting column 4 and the cylinder 3 respectively, the rear end of the connecting column 4 is fixedly connected with a fan-shaped plate 5, the outer wall upper edge of the fan-shaped plate 5 is attached with an arc shell 6, a fixing mechanism is arranged between the arc shell 6 and the fan-shaped plate 5, the outer arc surface of the arc shell 6 is fixedly connected with an arc scraper 7, the lower center of the fan-shaped plate 5 is fixedly connected with a connecting cylinder 9, the inner wall of the connecting cylinder 9 is attached with a support column 10, a limiting mechanism and an elastic piece are arranged between the support column 10 and the connecting cylinder 9 respectively, the bottom end of the support column 10 is fixedly connected with a universal wheel 11, and the front end of the holding tube 1 is fixedly connected with a threaded tube two 12.

[0021] The guide mechanism includes two sliding blocks one 17 and two sliding slots one 18, the two sliding blocks one 17 are symmetrically fixedly connected at the outer wall front edge of the connecting column 4, the two sliding slots one 18 are respectively arranged at the inner wall of the cylinder 3 corresponding to the two sliding blocks one 17, and the two sliding slots one 18 are respectively in sliding fit with the two sliding blocks one 17.

[0022] The elastic member comprises a spring 14, one end of the spring 14 is fixedly connected to the inner front end surface of the cylinder body 3, and the other end of the spring 14 is fixedly connected to the front end of the connecting column 4.

[0023] The limiting mechanism comprises two sliding blocks 19 and two sliding grooves 20, the two sliding blocks 19 are symmetrically fixedly connected to the outer wall upper edge of the supporting column 10, the two sliding grooves 20 are respectively arranged in the inner wall of the connecting cylinder 9 corresponding to the two sliding blocks 19, and the two sliding grooves 20 are respectively in sliding fit with the two sliding blocks 19.

[0024] The elastic member comprises a spring 16, one end of the spring 16 is fixedly connected to the inner top end surface of the connecting cylinder 9, and the other end of the spring 16 is fixedly connected to the top end of the supporting column 10.

[0025] In the embodiment, when the device is used to clean the drill hole, the arc-shaped scraper 7 on the arc-shaped shell 6 can clean the upper half circumference of the drill hole, so that the coal and rock debris adhered to the upper half circumference of the drill hole is scraped off by the arc-shaped scraper 7. In the cleaning process, the universal wheel 11 rolls at the inner bottom of the drill hole, thereby reducing the burden of the worker in the hole cleaning operation.

[0026] When the coal and rock debris with strong adhesion force blocks the arc-shaped scraper 7 from penetrating into the hole, at this time, since the holding pipe 1, the threaded pipe 2, the cylinder body 3 and the connecting column 4 are still in the state of penetrating into the drill hole, the spring 14 between the cylinder body 3 and the connecting column 4 is squeezed (in this process, the two sliding grooves 18 on the cylinder body 3 slide on the respective corresponding sliding blocks 17 on the connecting column 4), at this time, the squeezing force of the spring 14 is fed back to the worker, so as to facilitate the worker to adjust the hole cleaning state and avoid the damage of the arc-shaped scraper 7 caused by the excessive force of the worker.

[0027] At this time, the staff can adjust the hole scanning state so that the hole scanning operation can continue, that is, press down the holding tube 1, the holding tube 1 drives the stud 13, the threaded tube 1, the cylinder 3 and the connecting column 4 on the cylinder 3 to move downward, the connecting column 4 drives the sector plate 5 to move downward, the sector plate 5 drives the connecting cylinder 9 to slide downward on the outer wall of the supporting column 10 (in this process, the spring 16 between the connecting cylinder 9 and the supporting column 10 is extruded, and the two sliding grooves 20 on the connecting cylinder 9 also slide downward on the respective corresponding sliding blocks 19 on the supporting column 10), then continue to press the holding tube 1 into the hole while pressing the holding tube 1, so that the arc-shaped scraper 7 leaves the coal and rock debris with strong adhesion, then release the holding tube 1, and the arc-shaped scraper 7 will automatically reset upward under the action of the spring 16, so as to continue the hole scanning operation. When the arc-shaped scraper 7 moves to the deepest part of the hole, rotate the holding tube 1 by one hundred and eighty degrees (the holding tube 1 is marked with a mark line, the rotation angle of the holding tube 1 can be judged by observing the position change of the mark line), then the arc-shaped scraper 7 can be rotated by one hundred and eighty degrees, and then the coal and rock debris in the lower half circle of the hole can be scraped outwards by pulling the arc-shaped scraper 7 outwards, so as to realize the cleaning of the lower half circle of the hole, which is simple to operate.

[0028] It should be noted that the threaded tube 12 can adjust the length of the holding tube 1 according to the depth of the hole, that is, when the hole is deep, the stud 13 on another holding tube 1 is inserted and screwed into the threaded tube 2 on the holding tube 1, so as to lengthen the holding tube 1. When the device is not needed, the threaded tube 1 can be rotated backward, so that the threaded tube 1 is rotated off the holding tube 1, so that the device can reduce the occupation of space, and is convenient for storage and transportation, and the disassembly and assembly operation is simple.

[0029] Embodiment two: please refer to Figure 1 and Figure 3 This embodiment further illustrates embodiment one, and the fixing mechanism in the figure includes two knob screws 8 and two screw holes 15, the two knob screws 8 are symmetrically threaded at the lower edge of the front end of the arc-shaped shell 6, and the two screw holes 15 are respectively formed in the front end of the sector plate 5 corresponding to the two knob screws 8, and the two screw holes 15 are respectively screwed with the two knob screws 8.

[0030] In this embodiment, when the arc-shaped scraper 7 needs to be replaced due to serious wear, the two knob screws 8 can be rotated forward in sequence, the two knob screws 8 are rotated forward in the inner wall of the arc-shaped shell 6, and the two knob screws 8 are also rotated forward in the respective corresponding screw holes 15 on the sector plate 5, until the two knob screws 8 are completely separated from the respective corresponding screw holes 15, then the arc-shaped shell 6 can be removed from the sector plate 5, and then a new arc-shaped shell 6 can be installed on the sector plate 5 according to the reverse operation, so as to complete the replacement of the arc-shaped scraper 7, which is simple to operate.

[0031] It should be noted that the relational terms herein, such as first and second, and the like, are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0032] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A half-arc hole sweeping device for zero-degree angle blasting hole in high stress coal seam environment, comprising a holding pipe (1), characterized in that: The rear end of the holding pipe (1) is fixedly connected with a stud (13), the outer wall of the stud (13) is threadedly connected with a threaded pipe (2), the rear end of the threaded pipe (2) is fixedly connected with a cylinder (3), the inner wall of the cylinder (3) is attached with a connecting column (4), the connecting column (4) and the cylinder (3) are respectively provided with a guide mechanism and an elastic piece, the rear end of the connecting column (4) is fixedly connected with a sector plate (5), the outer wall upper edge of the sector plate (5) is attached with an arc shell (6), the arc shell (6) and the sector plate (5) are provided with a fixing mechanism, the outer arc surface of the arc shell (6) is fixedly connected with an arc scraper (7), the lower center of the sector plate (5) is fixedly connected with a connecting cylinder (9), the inner wall of the connecting cylinder (9) is attached with a supporting column (10), the supporting column (10) and the connecting cylinder (9) are respectively provided with a limiting mechanism and an elastic piece, the bottom end of the supporting column (10) is fixedly connected with a universal wheel (11), and the front end of the holding pipe (1) is fixedly connected with a threaded pipe (12).

2. The half-arc hole sweeping device for zero-degree angle blasting hole in high stress coal seam environment according to claim 1, characterized in that: The guide mechanism comprises two sliding blocks (17) and two sliding grooves (18), the two sliding blocks (17) are symmetrically fixedly connected at the outer wall front edges of the connecting column (4), and the two sliding grooves (18) are respectively formed in the inner wall of the cylinder (3) corresponding to the two sliding blocks (17).

3. The half-arc hole sweeping device for zero-degree angle blasting hole in high stress coal seam environment according to claim 1, characterized in that: The elastic piece comprises a spring (14), one end of the spring (14) is fixedly connected to the inner front end face of the cylinder (3), and the other end of the spring (14) is fixedly connected to the front end of the connecting column (4).

4. The half-arc hole sweeping device for zero-degree angle blasting hole in high stress coal seam environment according to claim 1, characterized in that: The fixing mechanism comprises two knob screws (8) and two screw holes (15), the two knob screws (8) are symmetrically threaded through the front end lower edges of the arc shell (6), the two screw holes (15) are respectively formed in the front end of the sector plate (5) corresponding to the two knob screws (8), and the two screw holes (15) are respectively threadedly connected with the two knob screws (8).

5. The half-arc hole sweeping device for zero-degree angle blasting hole in high stress coal seam environment according to claim 1, characterized in that: The limiting mechanism comprises two sliding blocks (19) and two sliding grooves (20), the two sliding blocks (19) are symmetrically fixedly connected at the outer wall upper edges of the supporting column (10), and the two sliding grooves (20) are respectively formed in the inner wall of the connecting cylinder (9) corresponding to the two sliding blocks (19).

6. The half-arc hole sweeping device for zero-degree angle blasting hole in high stress coal seam environment according to claim 1, characterized in that: The elastic piece comprises a spring (16), one end of the spring (16) is fixedly connected to the inner top end face of the connecting cylinder (9), and the other end of the spring (16) is fixedly connected to the top end of the supporting column (10).

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