Water-rich weakly cemented stratum blast hole wall rock slag cleaning device and using method thereof

Abstract

The invention belongs to the technical field of blasting, and particularly relates to a water-rich weakly cemented stratum blast hole wall rock slag cleaning device and a using method thereof.The device comprises a main body, a driving assembly and an expansion assembly are arranged on the main body and are in transmission connection, and a limiting mechanism is arranged between the main body and the expansion assembly; scraping pieces are arranged on the expansion assembly in the circumferential direction and make contact with the side wall of the blast hole, a supporting assembly is arranged at the bottom end of the main body, the supporting assembly is detachably connected with the expansion assembly, and the supporting assembly makes contact with the bottom wall of the blast hole. Slurry-shaped rock debris on the side wall of a blast hole can be scraped down and conveyed out of the blast hole, and the problem that the blasting effect does not reach the standard due to the fact that the slurry-shaped rock debris flows back to block the blast hole is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of blasting, and in particular relates to a device for cleaning rock slag from a blast hole wall in a water-rich, weakly cemented stratum and a method for using the device. Background Art

[0002] The drilling cuttings of frozen rocks in weakly cemented strata in the west are muddy and cannot be blown out of the blasthole smoothly. After the on-site blowing operation is completed, the residual muddy cuttings hanging on the blasthole wall and the mud at the hole mouth flow into the blasthole along the hole wall, causing the blasthole to shrink, the blasthole depth to decrease, and the charge amount to decrease, which cannot meet the blasting design requirements and ultimately have an adverse effect on the blasting effect.

[0003] To this end, a device for cleaning rock debris from the borehole wall of a water-rich and weakly cemented formation and a method for using the device are proposed. Summary of the invention

[0004] The object of the present invention is to provide a device for cleaning rock debris from the wall of a blasthole in a water-rich and weakly cemented stratum and a method for using the device to solve the above-mentioned problem.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] A device for cleaning rock debris from the wall of a blasthole in a water-rich, weakly cemented formation comprises: a main body, on which a driving assembly and an expansion assembly are arranged, the driving assembly is transmission-connected to the expansion assembly, a limiting mechanism is arranged between the main body and the expansion assembly, a scraper is circumferentially arranged on the expansion assembly, the scraper is arranged in contact with the side wall of the blasthole, a supporting assembly is arranged at the bottom end of the main body, the supporting assembly is detachably connected to the expansion assembly, and the supporting assembly is arranged in contact with the bottom wall of the blasthole.

[0007] In the rock debris cleaning device for the borehole wall of a water-rich and weakly cemented formation of the present invention, the expansion assembly includes a sliding ring slidably connected to the outer wall of the main body, the bottom ends of a plurality of support rods are hinged on the sliding ring, the plurality of support rods are axially evenly spaced, and the scraper is circumferentially fixed to the outer sides of the plurality of support rods.

[0008] In the rock debris cleaning device for the borehole wall in water-rich and weakly cemented formations of the present invention, the driving assembly includes a fixing ring fixedly connected to the outer wall of the main body, and the top ends of multiple traction rods are hinged on the fixing ring. The multiple traction rods are arranged at equal intervals circumferentially, and the multiple traction rods are arranged one-to-one corresponding to the multiple support rods. The bottom ends of the traction rods are hinged at the middle of the support rods.

[0009] In the rock debris cleaning device for the borehole wall in water-rich and weakly cemented formations of the present invention, the support assembly includes a protective sleeve detachably connected to the slip ring, a first spring is arranged inside the protective sleeve, the bottom end of the first spring is fixedly connected to the inner bottom wall of the protective sleeve, and the top end of the first spring abuts against the bottom end of the main body.

[0010] In the rock debris cleaning device for the borehole wall of a water-rich and weakly cemented formation of the present invention, the limiting mechanism includes a mounting frame fixedly connected to the side wall of the main body, the opening of the mounting frame is flush with the outer wall of the main body, a limiting block is hinged on the inner bottom wall of the mounting frame, the limiting block extends out of the mounting frame, one end of a second spring is fixedly connected to the inner wall of the mounting frame, the other end of the second spring is fixedly connected to the limiting block, the second spring is located at the upper part of the limiting block, and a slope is provided on the side of the limiting block extending out of the mounting frame, and the slope faces the slip ring.

[0011] In the rock debris cleaning device for blasthole walls in water-rich and weakly cemented formations of the present invention, a plurality of through holes are opened on the side wall of the main body, the plurality of through holes are all located at the lower part of the main body, and the plurality of through holes are arranged at equal intervals along the length direction of the main body.

[0012] In the rock debris cleaning device for blasthole walls in water-rich and weakly cemented formations of the present invention, the top and bottom ends of the main body are respectively threadedly connected with a first nut and a second nut, and the second nut abuts against the top end of the first spring.

[0013] The method for using the device for cleaning rock slag from the borehole wall of a water-rich and weakly cemented formation comprises the following steps:

[0014] Select the main body and scraper according to the hole depth and hole diameter of the blasthole, ensure that the diameter of the scraper after opening is compatible with the diameter of the blasthole, assemble the cleaning device, lower the cleaning device into the blasthole until the supporting assembly contacts the bottom wall of the blasthole, press down the main body, and the driving assembly drives the expansion assembly to open. The scraper slides in contact with the side wall of the blasthole. At this time, the limiting mechanism and the expansion assembly are in limiting contact, and the scraper will not close. Lift the main body, and the scraper will scrape the muddy rock cuttings on the side wall of the blasthole and transport it out of the blasthole.

[0015] Compared with the prior art, the present invention has the following advantages and technical effects:

[0016] When the device of the present invention is in use, the main body and the scraper are selected according to the hole depth and the hole diameter of the blasthole to ensure that the diameter of the scraper after opening is compatible with the diameter of the blasthole. The cleaning device is assembled and lowered into the blasthole until the supporting assembly contacts the bottom wall of the blasthole. The main body is pressed down, and the driving assembly drives the expansion assembly to open. The scraper contacts the side wall of the blasthole in a sliding manner. At this time, the limiting mechanism and the expansion assembly are in limiting contact, and the scraper will not close. The main body is lifted, and the scraper scrapes the muddy rock chips on the side wall of the blasthole and transports them out of the blasthole.

[0017] The present invention can scrape off the muddy rock cuttings on the side wall of the blasthole and transport them out of the blasthole, thus avoiding the problem that the muddy rock cuttings flow back and block the blasthole, resulting in unsatisfactory blasting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 for Figure 1 AA section view in;

[0021] Figure 3 for Figure 2 The middle B must not be enlarged;

[0022] Figure 4 for Figure 2 The image at center C must not be enlarged;

[0023] Among them, 1. first nut; 2. main body; 3. through hole; 4. fixing ring; 5. traction rod; 6. scraper; 7. slip ring; 8. protective cover; 9. limit block; 10. support rod; 11. second nut; 12. first spring; 13. installation frame; 14. second spring. DETAILED DESCRIPTION

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

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Reference Figures 1 to 4The present invention discloses a rock slag cleaning device for a blasthole wall in a water-rich and weakly cemented formation, comprising: a main body 2, on which a driving assembly and an expansion assembly are arranged, the driving assembly and the expansion assembly are transmission-connected, a limiting mechanism is arranged between the main body 2 and the expansion assembly, a scraper 6 is circumferentially arranged on the expansion assembly, the scraper 6 is arranged in contact with the side wall of the blasthole, a supporting assembly is arranged at the bottom end of the main body 2, the supporting assembly is detachably connected to the expansion assembly, and the supporting assembly is arranged in contact with the bottom wall of the blasthole.

[0027] When the device of the present invention is in use, the main body 2 and the scraper 6 are selected according to the hole depth and hole diameter of the blasthole to ensure that the diameter of the scraper 6 after opening is compatible with the diameter of the blasthole. The cleaning device is assembled and lowered into the blasthole until the supporting assembly contacts the bottom wall of the blasthole. The main body 2 is pressed down, and the driving assembly drives the expansion assembly to open. The scraper 6 slides in contact with the side wall of the blasthole. At this time, the limiting mechanism and the expansion assembly are in limiting contact, and the scraper 6 will not close. The main body 2 is lifted, and the scraper 6 scrapes the muddy rock chips on the side wall of the blasthole and transports them out of the blasthole.

[0028] The present invention can scrape off the muddy rock cuttings on the side wall of the blasthole and transport them out of the blasthole, thus avoiding the problem that the muddy rock cuttings flow back and block the blasthole, resulting in unsatisfactory blasting effect.

[0029] In a feasible solution, the expansion assembly includes a slip ring 7 slidably connected to the outer wall of the main body 2, and the bottom ends of multiple support rods 10 are hinged on the slip ring 7. The multiple support rods 10 are axially evenly spaced, and the scraper 6 is circumferentially fixed to the outer sides of the multiple support rods 10.

[0030] The plurality of support rods 10 rotate around their bottom ends, and their top ends move away from the main body 2, thereby opening.

[0031] In a feasible solution, the driving assembly includes a fixing ring 4 fixedly connected to the outer wall of the main body 2, and the top ends of multiple traction rods 5 are hinged on the fixing ring 4. The multiple traction rods 5 are arranged at equal intervals in the circumferential direction. The multiple traction rods 5 are arranged one-to-one corresponding to the multiple support rods 10, and the bottom ends of the traction rods 5 are hinged at the middle of the support rods 10.

[0032] The fixed ring 4 descends as the main body 2 descends, while the position of the slip ring 7 remains unchanged, the distance between the fixed ring 4 and the slip ring 7 decreases, and the fixed ring 4 expands outward to push the support rod 10 to open.

[0033] In a feasible solution, the support assembly includes a protective cover 8 detachably connected to the slip ring 7, a first spring 12 is arranged inside the protective cover 8, the bottom end of the first spring 12 is fixed to the inner bottom wall of the protective cover 8, and the top end of the first spring 12 abuts against the bottom end of the main body 2.

[0034] The protective sleeve 8 supports the slip ring 7 to prevent the slip ring 7 from moving downward with the main body 2. The connection methods of the protective sleeve 8 and the slip ring 7 include but are not limited to threaded connection, pin connection, and clamping connection.

[0035] In a feasible solution, the limiting mechanism includes a mounting frame 13 fixedly connected to the side wall of the main body 2, the opening of the mounting frame 13 is flush with the outer wall of the main body 2, a limiting block 9 is hinged on the inner bottom wall of the mounting frame 13, the limiting block 9 extends out of the mounting frame 13, one end of a second spring 14 is fixedly connected to the inner wall of the mounting frame 13, the other end of the second spring 14 is fixedly connected to the limiting block 9, the second spring 14 is located at the upper part of the limiting block 9, and a slope is provided on the side where the limiting block 9 extends out of the mounting frame 13, and the slope faces the slip ring 7.

[0036] The limit block 9 descends, and first the slope of the limit block 9 contacts the slip ring 7. The limit block 9 is retracted into the installation frame 13 under the action of the slip ring 7. When the limit block 9 is separated from the slip ring 7 again, the second spring 14 pops the limit block 9 out of the installation frame 13, and the top of the limit block 9 abuts against the slip ring 7. The first spring 12 cannot push the main body 2 and the slip ring 7 to produce relative movement, thus completing the limit.

[0037] In a feasible solution, a plurality of through holes 3 are opened on the side wall of the main body 2 , the plurality of through holes 3 are all located at the lower part of the main body 2 , and the plurality of through holes 3 are arranged at equal intervals along the length direction of the main body 2 .

[0038] The provision of the through hole 3 facilitates the mud to flow into the main body 2 .

[0039] In a feasible solution, the top and bottom ends of the main body 2 are respectively threadedly connected with the first nut 1 and the second nut 11 , and the second nut 11 abuts against the top end of the first spring 12 .

[0040] The method for using the rock slag cleaning device for the blast hole wall in the water-rich and weakly cemented formation is as follows:

[0041] Select the main body 2 and the scraper 6 according to the hole depth and hole diameter of the blasthole, ensure that the diameter of the scraper 6 after opening is compatible with the diameter of the blasthole, assemble the cleaning device, lower the cleaning device into the blasthole until the supporting assembly contacts the bottom wall of the blasthole, press down the main body 2, the driving assembly drives the expansion assembly to open, and the scraper 6 slides in contact with the side wall of the blasthole. At this time, the limiting mechanism and the expansion assembly are in limiting contact, and the scraper 6 will not close. Lift the main body 2, and the scraper 6 will scrape the muddy rock cuttings on the side wall of the blasthole and transport it out of the blasthole.

[0042] Specific usage:

[0043] First, according to the depth and diameter of the blasthole, a suitable main body 2, scraper 6, support assembly, expansion assembly and drive assembly are selected and assembled into a cleaning device. After the assembly is completed, the main body 2 is held, and the end of the main body 2 with the protective cover 8 is directed toward the bottom wall of the blasthole and slowly extended into the blasthole until the protective cover 8 contacts the bottom wall of the blasthole. At this time, the main body 2 is pressed down, and the main body 2 drives the fixing ring 4 to descend, the traction rod 5 descends, and the bottom end position of the support rod 10 is fixed. The support rod 10 opens under the action of the traction rod, so that the outer edge of the scraper 6 contacts the side wall of the blasthole. During this process, the limit block 9 descends, and first the slope of the limit block 9 contacts the slip ring 7. The limit block 9 is retracted into the installation frame 13 under the action of the slip ring 7. When the limit block 9 is separated from the slip ring 7 again, the second spring 14 pops the limit block 9 out of the installation frame 13, and the top of the limit block 9 abuts against the slip ring 7 to complete the limit. At this time, the scraper 6 is opened at a fixed angle, and the main body 2 is slowly lifted up. At this time, the scraper 6 scrapes against the side wall of the blasthole, scrapes off the muddy rock debris on the side wall of the blasthole and transports it out of the blasthole, and the cleaning device is disassembled, cleaned, and reassembled;

[0044] Repeat the above steps several times until the muddy rock cuttings in the blasthole are cleared and the blasthole depth and diameter meet the blasting design requirements.

[0045] The present invention adopts a mechanical device with low cost, simple structure, low failure rate and simple maintenance. The length of the main body 2, the support rod 10 and the area of ​​the scraper 6 can be replaced according to the size of the blast hole, and the adaptability is high. The operation is simple and the safety is high, and the blast hole wall rock slag can be effectively cleaned to achieve the blasting effect.

[0046] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A device for cleaning rock slag from blasthole walls in water-rich and weakly cemented formations, characterized in that: include: A main body (2), wherein a driving assembly and an expansion assembly are arranged on the main body (2), wherein the driving assembly is in transmission connection with the expansion assembly, a limiting mechanism is arranged between the main body (2) and the expansion assembly, a scraper (6) is arranged circumferentially on the expansion assembly, wherein the scraper (6) is arranged in contact with the side wall of the blasthole, and a supporting assembly is arranged at the bottom end of the main body (2), wherein the supporting assembly is detachably connected with the expansion assembly, and wherein the supporting assembly is arranged in contact with the bottom wall of the blasthole.

2. The device for cleaning rock slag from the blast hole wall in a water-rich and weakly cemented formation according to claim 1 is characterized by: The expansion assembly comprises a sliding ring (7) slidably connected to the outer wall of the main body (2), the bottom ends of a plurality of support rods (10) being hingedly connected to the sliding ring (7), the plurality of support rods (10) being axially arranged at equal intervals, and the scraper (6) being circumferentially fixed to the outer sides of the plurality of support rods (10).

3. The device for cleaning rock slag from the blast hole wall in a water-rich and weakly cemented formation according to claim 2 is characterized by: The driving assembly comprises a fixing ring (4) fixedly connected to the outer wall of the main body (2), the top ends of a plurality of traction rods (5) being hingedly connected to the fixing ring (4), the plurality of traction rods (5) being arranged at equal intervals in the circumferential direction, the plurality of traction rods (5) being arranged in one-to-one correspondence with the plurality of support rods (10), and the bottom ends of the traction rods (5) being hingedly connected to the middle of the support rods (10).

4. The device for cleaning rock slag from the blast hole wall in a water-rich and weakly cemented formation according to claim 3 is characterized by: The support assembly comprises a protective sleeve (8) detachably connected to the slip ring (7), a first spring (12) being arranged inside the protective sleeve (8), the bottom end of the first spring (12) being fixedly connected to the inner bottom wall of the protective sleeve (8), and the top end of the first spring (12) being in contact with the bottom end of the main body (2).

5. The device for cleaning rock slag from the blasthole wall in a water-rich and weakly cemented formation according to claim 2 is characterized by: The limiting mechanism comprises a mounting frame (13) fixedly connected to the side wall of the main body (2), an opening of the mounting frame (13) being flush with the outer side wall of the main body (2), a limiting block (9) being hingedly connected to the inner bottom wall of the mounting frame (13), the limiting block (9) extending out of the mounting frame (13), one end of a second spring (14) being fixedly connected to the inner wall of the mounting frame (13), the other end of the second spring (14) being fixedly connected to the limiting block (9), the second spring (14) being located at the upper part of the limiting block (9), and a slope being provided on the side of the limiting block (9) extending out of the mounting frame (13), the slope being directed toward the slip ring (7).

6. The device for cleaning rock slag from the blast hole wall in a water-rich and weakly cemented formation according to claim 2 is characterized by: A plurality of through holes (3) are provided on the side wall of the main body (2); the plurality of through holes (3) are all located at the lower part of the main body (2); and the plurality of through holes (3) are arranged at equal intervals along the length direction of the main body (2).

7. The device for cleaning rock debris from blasthole walls in water-rich and weakly cemented formations according to claim 4 is characterized by: The top and bottom ends of the main body (2) are respectively threadedly connected with a first nut (1) and a second nut (11), and the second nut (11) abuts against the top end of the first spring (12).

8. The method for using the device for cleaning rock debris from the blast hole wall in a water-rich and weakly cemented formation according to any one of claims 1 to 7, characterized in that: Here are the steps: The main body (2) and the scraper (6) are selected according to the hole depth and hole diameter of the blasthole, ensuring that the diameter of the scraper (6) after opening is compatible with the diameter of the blasthole, and the cleaning device is assembled and lowered into the blasthole until the support assembly contacts the bottom wall of the blasthole, and the main body (2) is pressed down, and the drive assembly drives the expansion assembly to open, and the scraper (6) slides in contact with the side wall of the blasthole. At this time, the limit mechanism and the expansion assembly are in limit contact, and the scraper (6) will not close, and the main body (2) is lifted, and the scraper (6) scrapes the muddy rock debris on the side wall of the blasthole and transports it out of the blasthole.

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