Hole protection device

Abstract

The present application discloses a hole protection device. The hole protection device includes: a support rod, the support rod includes a positioning section for penetrating into the borehole and a soil discharge section located outside the borehole; an air bag, the air bag is arranged on the outer side of the positioning section, and is used to abut against the inner wall of the borehole after inflation to position the support rod and seal the borehole; a soil discharge section, the soil discharge section includes a soil discharge arm, the soil discharge arm is rotatably arranged around the outer side of the soil discharge section, and is used to clean the rock powder at the borehole opening; a collecting piece, the collecting piece is used to be arranged in the borehole, the collecting piece includes a collector for collecting rock powder, and the collector is located below the air bag. The hole protection device provided by the present application prevents rock powder from entering the borehole when protecting the hole, improves the quality of the borehole, reduces the workload of manual hole protection, and improves the drilling efficiency.

Description

Technical Field

[0001] The present application relates to the technical field, and in particular to a hole protection device. Background Art

[0002] More and more open-pit coal mine perforating equipment has begun to adopt large-diameter rotary hydraulic drill rigs, and charging has also been achieved on-site by mixed loading vehicles.

[0003] In order to improve the efficiency of mining and loading, open-pit mines need to carry out loosening blasting. Drilling is required before blasting. However, as the borehole diameter increases and the step height increases, the amount of slag discharged by the drill rig increases rapidly. In addition, due to the accumulation of rock powder by the dust collection system during drilling, most of the rock powder is concentrated around the hole mouth, forming an ant-hole-shaped rock powder pile. In order to prevent the rock powder from flowing back and causing the hole to be insufficiently deep, the borehole needs to be protected. The quality requirements for hole protection in the "Comprehensive Quality Standardization" of open-pit mining are: "Rock powder is cleaned within 0.3m from the edge of the hole mouth to see the hard bottom, and the rock powder forms an annular retaining wall." According to this requirement, taking a 15m step height and drilling 18m, using an 1190E drill rig with a 310mm aperture as an example, the amount of rock powder discharged from a single hole is within 1.5m 3 About 0.7m for a single hole 3 Traditional hole protection uses tools such as shovels and rakes to manually protect the hole. During the hole protection operation, there is a risk that rock powder will fall into the borehole, affecting the drilling quality. In addition, manual hole protection is labor-intensive, which affects the enthusiasm of operators for drilling operations and reduces drilling efficiency.

[0004] Therefore, it is necessary to solve the above technical problems. Summary of the invention

[0005] The present application provides a hole protection device, which aims to prevent rock powder from entering the drill hole during hole protection, improve the quality of the drill hole, reduce the workload of manual hole protection, and improve the drilling efficiency.

[0006] Based on the above-mentioned purpose, the present application provides a hole protection device, comprising: a support rod, the support rod comprising a positioning section for penetrating into a borehole and a soil discharge section located outside the borehole; an airbag, the airbag being arranged on the outer side surface of the positioning section, and being used to abut against the inner wall of the borehole after inflation to position the support rod and seal the borehole; a soil discharge section, the soil discharge section comprising a soil discharge arm, the soil discharge arm being rotatably arranged around the outer side surface of the soil discharge section, and being used to clean rock powder at the borehole opening; a collecting piece, the collecting piece being used to be arranged in the borehole, the collecting piece comprising a collector for collecting rock powder, and the collector being located below the airbag.

[0007] Optionally, the soil discharge part further includes a sleeve, the soil discharge arm is installed on the outside of the sleeve, and the sleeve is rotatably sleeved on the soil discharge section.

[0008] Optionally, the soil discharge arm comprises an arc-shaped plate, which is mounted on the outside of the sleeve and extends in a direction away from the sleeve.

[0009] Optionally, the collecting member further includes a control rod, the collector includes a necked end and a flared end that are relatively arranged, the necked end is sealingly mounted on the control rod, the flared end extends in a direction close to the airbag and is open, and the control rod is connected to the support rod.

[0010] Optionally, the support rod is provided with an adjustment hole along the axial direction and a limiter is provided at the end of the soil discharge section. The control rod is passed through the adjustment hole from the positioning section and exits the soil discharge section and then is limited on the support rod by the limiter.

[0011] Optionally, a threaded hole is provided on the limiter, an external thread is provided on the control rod, the limiter is threadedly mounted on the control rod, and an outer diameter of the limiter is larger than the adjustment hole.

[0012] Optionally, the collecting member further comprises a guide tube for guiding the control rod, the guide tube is passed through the adjustment hole and is connected to the support rod, and the control rod passes through the adjustment hole through the guide tube.

[0013] Optionally, the collector is made of a flexible material, the necked end is hinged on the control rod, and the collecting member also includes a support rib installed on the inner side of the collector, the support rib extends from the necked end to the flared end, the number of the support ribs is at least two, at least two of the support ribs are evenly arranged around the circumference of the collector, and the support ribs are hinged on the support rod or the guide tube extending out of the adjustment hole.

[0014] Optionally, the collecting member further comprises a connecting rod, wherein the connecting rod is hinged between the supporting rib and the guide tube.

[0015] Optionally, a rubber layer is further provided on the outer side of the airbag.

[0016] The hole protection device provided in the present application, when protecting a borehole, uses an inflated air bag to squeeze the inner wall of the borehole to position the support rod in the borehole and prevent rock powder from falling downward from the junction of the air bag and the borehole; the soil discharge arm rotates around the soil discharge section to remove the rock powder at the borehole opening within the length of the soil discharge arm, thereby reducing the workload of manual hole protection and improving the drilling efficiency; the collector is located below the air bag to collect the rock powder that falls from the air bag and the inner wall of the borehole; the blocking effect of the air bag and the collecting effect of the collecting piece can effectively prevent the rock powder from falling into the interior of the borehole, thereby improving the drilling quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings to help understand the purpose and advantages of the present application, wherein:

[0018] Figure 1 A schematic structural diagram of a hole protection device provided in an optional embodiment of the present application being disposed in a drilled hole.

[0019] Figure 2 A schematic structural diagram of a portion of a hole protection device provided in an optional embodiment of the present application that is disposed within a drilled hole.

[0020] Figure 3 A schematic structural diagram of the soil discharge section provided for an optional embodiment of the present application.

[0021] Figure 4 A schematic diagram of the structure of a collecting member provided for an optional embodiment of the present application.

[0022] Description of reference numerals:

[0023] 1- Drilling;

[0024] 2-support rod, 20-positioning section, 21-soil discharge section, 22-adjustment hole, 23-air bag, 24-inflating hole, 25-exhaust hole;

[0025] 3- soil discharge part, 30- soil discharge arm, 31- casing, 32- handle;

[0026] 4-collecting part, 40-control rod, 41-collector, 42-reduced end, 43-expanded end, 44-limiter, 45-guide tube, 46-support rib, 47-connecting rod, 48-connector. DETAILED DESCRIPTION

[0027] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0028] like Figures 1 to 3 As shown, the present application provides a hole protection device, including: a support rod 2, an air bag 23, a soil discharge part 3 and a collecting piece 4.

[0029] Please also refer to Figures 1 to 3The support rod 2 includes a positioning section 20 for penetrating into the borehole 1 and a soil discharge section 21 located outside the borehole 1; the airbag 23 is arranged on the outer side of the positioning section 20, and is used to abut against the inner wall of the borehole 1 after inflation to position the support rod 2 and block the borehole 1; the soil discharge part 3 includes a soil discharge arm 30, and the soil discharge arm 30 is rotatably arranged on the outer side of the soil discharge section 21, and is used to clean the rock powder at the opening of the borehole 1; the collecting piece 4 is used to be arranged in the borehole 1, and the collecting piece 4 includes a collector 41 for collecting rock powder, and the collector 41 is located below the airbag 23.

[0030] In the embodiment of the present application, the airbag 23 is hollow and arranged in a cylindrical sleeve structure after being inflated, and the positioning section 20 is located in the hollow part of the airbag 23. Flexible shaping plates can be arranged in the circumferential direction in the airbag 23 to shape the airbag 23.

[0031] Optionally, an inflation port with a cover may be provided on the airbag 23, and air is inflated into the airbag 23 through the inflation port and the cover is buckled onto the inflation port after the inflation is completed, so that the airbag 23 remains in an inflated state. The inflated airbag 23 fully fills the borehole 1, and the support rod 2 is positioned by squeezing the inner wall of the borehole 1, and debris, rainwater, etc. outside the borehole 1 are prevented from entering the borehole 1.

[0032] Optionally, the airbag 23 can also be inflated through the support rod 2. The airbag 23 is sealed and arranged on the outer side of the support rod 2 and is connected to the support rod 2. The two ends of the support rod 2 are closed, so that the adjustment hole 22 is a closed hole. The support rod 2 is provided with an inflation hole 24 and an exhaust hole 25 at the end. The inflation hole 24 is inflated to control the expansion of the airbag 23; the exhaust hole 25 is opened to achieve the effect of pressure relief and exhaust. A one-way valve is provided in the inflation hole 24 to prevent backflow.

[0033] The soil discharge arm 30 in the embodiment of the present application can be rotatably connected to the support rod 2, and the soil discharge arm 30 can be rotated around the outer side surface of the support rod 2 to remove rock powder within a circular surface with any point on the central axis of the support rod 2 as the center and the sum of the radii of the soil discharge arm 30 and the support rod 2 as the radius.

[0034] The hole protection device provided in the present application, when protecting the borehole 1, squeezes the inner wall of the borehole 1 through the inflated airbag 23 to position the support rod 2 in the borehole 1 and prevents rock powder from falling downward from the junction of the airbag 23 and the borehole 1; the soil discharge arm 30 rotates around the soil discharge section 21 to remove the rock powder at the opening of the borehole 1 within the length of the soil discharge arm 30, thereby reducing the workload of manual hole protection and improving the efficiency of the borehole 1; the collector 41 is located below the airbag 23 to collect the rock powder that falls from the airbag 23 and the inner wall of the borehole 1, and the blocking effect of the airbag 23 and the collecting effect of the collecting member 4 can effectively prevent the rock powder from falling into the interior of the borehole 1, thereby improving the quality of the borehole 1.

[0035] Optionally, the soil discharge part 3 further includes a sleeve 31, and the soil discharge arm 30 can be installed on the outside of the sleeve 31 by welding, and the sleeve 31 is rotatably sleeved on the soil discharge section 21. Figure 3 As shown, the inner wall surface of the sleeve 31 is a cylindrical surface. The sleeve 31 is sleeved on the soil discharge section 21 and can be rotated around the soil discharge section 21. When the sleeve 31 rotates, the soil discharge arm 30 is driven to rotate together to achieve the soil discharge effect. Figure 3 As shown, a rotating handle 32 is also provided on the sleeve 31, and the operator can drive the sleeve 31 to rotate by rotating the handle 32. The rotating handle 32 may include a mounting rod and an operating rod that are bent and connected. The mounting rod can be welded or clamped on the sleeve 31, and the operating rod extends in a direction away from the sleeve 31, which is easy to operate.

[0036] Optionally, the soil removal arm 30 includes an arc-shaped plate, which can be welded and installed on the outside of the sleeve 31 and extends in a direction away from the sleeve 31. Figure 3 As shown, the arc plate can limit the rock powder, reduce the leakage of rock powder from the upper and lower edges of the arc plate, and guide the rock powder to be discharged from the end of the arc plate away from the casing 31 under the action of centrifugal force during rotation, so as to achieve the effect of effectively removing the rock powder.

[0037] Optionally, the collecting member 4 further includes a control rod 40, the collector 41 includes a constricted end 42 and a flared end 43 which are arranged opposite to each other, the constricted end 42 is sealed and mounted on the control rod 40, the flared end 43 extends toward the direction close to the airbag 23 and is open, and the control rod 40 is connected to the support rod 2. The flared end 43 is open so that the collector 41 can be Figure 1 , Figure 2 and Figure 4The edge of the flared end 43 shown in the funnel shape can abut against the inner wall of the borehole 1 to collect rock powder and floating soil within the cross-sectional range of the borehole 1, thereby improving the hole protection effect; the rock powder and floating soil collected by the flared end 43 slide down the inner side of the collector 41 to the constricted end 42 under the action of gravity, so that the flared end 43 leaves space required for continuing to collect rock powder and floating soil. The constricted end 42 in the embodiment of the present application can be provided with a rubber sheet, which is bonded and covered below the connection between the constricted end 42 and the control rod 40 to achieve a sealing effect.

[0038] Optionally, the support rod 2 is provided with an adjustment hole 22 along the axial direction and a limiter 44 is provided at the end of the soil discharge section 21, and the control rod 40 is passed through the adjustment hole 22 from the positioning section 20 and the soil discharge section 21, and then is limited on the support rod 2 by the limiter 44 after passing through the adjustment hole 22. The limiter 44 in the embodiment of the present application can be a snap-on interface, and a snap-on part is provided on the control rod 40, and the snap-on part is snap-on to the snap-on interface to realize the positioning of the control rod 40, and then the collector 41 is positioned on the support rod 2 to stably collect rock powder and floating soil.

[0039] Optionally, a threaded hole is provided on the stopper 44, an external thread is provided on the control rod 40, the stopper 44 is threadedly mounted on the control rod 40, and the outer diameter of the stopper 44 is larger than the adjustment hole 22. In the embodiment of the present application, after the control rod 40 extends out of the soil discharge section 21 from the adjustment hole 22, the stopper 44 is spirally sleeved on the control rod 40, and the stopper 44 abuts against the upper part of the support rod 2, and the support rod 2 supports the stopper 44 to achieve the effect of positioning the control rod 40. In the embodiment of the present application, by controlling the position of the stopper 44 spirally connected to the control rod 40, the vertical distance between the collector 41 and the airbag 23 can be controlled, so as to adjust the position of the collector 41.

[0040] Optional, such as Figure 4 As shown, the collecting member 4 may further include a guide tube 45 for guiding the control rod 40, the guide tube 45 is inserted into the adjustment hole 22 and connected to the support rod 2, and the control rod 40 passes through the adjustment hole 22 through the guide tube 45. Figure 1 , Figure 2 and Figure 4 As shown, the inner diameter of the guide tube 45 can be slightly larger than the outer diameter of the control rod 40 . By vertically arranging the guide tube 45 in the adjustment hole 22 , the control rod 40 can be effectively prevented from tilting, so that the collector 41 can be stably arranged in the borehole 1 .

[0041] Optionally, when the airbag 23 is inflated or deflated through the support rod 2 , the guide tube 45 is sealed and passes through the adjustment hole 22 .

[0042] Optionally, the two ends of the support rod 2 are closed so that the adjustment hole 22 is a closed hole. The support rod 2 is provided with an inflation hole 24 and an exhaust hole 25 at the end thereof for adjusting the adjustment hole 22 to be connected to the outside world. The support rod 2 is connected to the airbag 23. The inflation hole 24 is inflated to control the expansion of the airbag 23. The exhaust hole 25 is opened to achieve the effect of pressure relief and exhaust. A one-way valve is provided in the inflation hole 24 to prevent backflow.

[0043] Optionally, the collector 41 is made of a flexible material, the constricted end 42 is hinged on the control rod 40, and the collector 4 further includes a support rib 46 installed on the inner side of the collector 41, the support rib 46 extends from the constricted end 42 to the flared end 43, the number of the support rib 46 is at least two, at least two of the support ribs 46 are evenly arranged around the circumference of the collector 41, and the support rib 46 is hinged on the support rod 2 or the guide tube 45 extending out of the adjustment hole 22. In the embodiment of the present application, the flared end 43 of the collector 41 can be opened by pulling up the control rod 40 in the vertical direction, and the flared end 43 of the collector 41 can be folded by pushing down the control rod 40 in the vertical direction, thereby achieving the effect of the collector 41 being opened or folded like an umbrella. When the collector 41 needs to collect floating soil, the control rod 40 is pulled upward until the edge of the flared end 43 abuts against the inner wall of the borehole 1. At this time, the control rod 40 is positioned on the support rod 2 through the stopper 44 to put the collector 41 in a state; when the collector 41 enters the borehole 1 or moves out of the borehole 1, the control rod 40 is pushed downward to close the collector 41 to avoid position interference between the collector 41 and the borehole 1. It should be noted that the upward or downward movement of the control rod 40 is relative to the support rod 2 and the air bag 23, so that the collector 41 can achieve the effect of opening and closing.

[0044] In the embodiment of the present application, the collector 41 can be made of rubber or waterproof cloth. The necked end 42 of the collector 41 is closed and sleeved on the end of the control rod 40. The support rib 46 is hinged on the guide tube 45 at the necked end 42 to realize the opening or closing of the necked end 42 relative to the control rod 40.

[0045] Optional, such as Figure 4 As shown, the collecting member 4 further comprises a connecting rod 47, and the connecting rod 47 is hinged between the supporting rib 46 and the guiding tube 45. The connecting rod 47 in the embodiment of the present application can enable the collector 41 to have a larger opening angle.

[0046] Optionally, a rubber layer is further provided on the outer side of the airbag 23. The rubber layer can be sleeved or coated on the outer side of the airbag 23. The rubber layer is elastic and can be stretched and deformed when the airbag 23 is inflated. With its wear-resistant characteristic, when the airbag 23 is inflated and abuts against the inner wall of the borehole 1, the rubber layer can effectively protect the airbag 23 and reduce the wear of the airbag 23.

[0047] Optionally, a connector 48 may be provided on the control rod 40, and a slot for inserting an identification plate may be provided on the connector 48. The identification plate marked with the drilling hole 1 number, hole depth, hole diameter, and drilling time may be inserted into the slot to facilitate operators to identify the drilling hole 1.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A hole protection device, characterized in that: include: A support rod, the support rod comprising a positioning section for penetrating into the borehole and a soil discharge section located outside the borehole; An airbag, the airbag being arranged on the outer side of the positioning section and being used for abutting against the inner wall of the drill hole after being inflated to position the support rod and seal the drill hole; A soil discharge section, the soil discharge section comprising a soil discharge arm, the soil discharge arm being rotatably arranged around the outer side surface of the soil discharge section and being used for cleaning rock powder at the opening of the drill hole; A collecting member, the collecting member is used to be arranged in the drill hole, the collecting member comprises a collector for collecting rock powder, and the collector is located below the air bag; The outer side of the airbag is also covered with a rubber layer; The collecting member also includes a control rod, and the collector includes a necked end and a flared end that are arranged opposite to each other. The necked end is sealed and installed on the control rod, and the flared end extends toward the direction close to the airbag and is opened. The control rod is connected to the support rod.

2. The hole protection device according to claim 1, characterized in that: The soil discharge part also includes a sleeve, the soil discharge arm is installed on the outside of the sleeve, and the sleeve is rotatably sleeved on the soil discharge section.

3. The hole protection device according to claim 2, characterized in that: The soil ejection arm comprises an arc-shaped plate, which is installed on the outer side of the sleeve and extends in a direction away from the sleeve.

4. The hole protection device according to claim 3, characterized in that: The support rod is provided with an adjustment hole along the axial direction and a limiter is arranged at the end of the soil discharge section. The control rod is passed through the positioning section into the adjustment hole and passes through the adjustment hole from the soil discharge section and is limited on the support rod by the limiter.

5. The hole protection device according to claim 4, characterized in that: The stopper is provided with a threaded hole, the control rod is provided with an external thread, the stopper is threadedly mounted on the control rod, and the outer diameter of the stopper is larger than the adjustment hole.

6. The hole protection device according to claim 5, characterized in that: The collecting member further comprises a guide tube for guiding the control rod, wherein the guide tube is passed through the adjustment hole and connected to the support rod, and the control rod passes through the adjustment hole via the guide tube.

7. The hole protection device according to claim 6, characterized in that: The collector is made of a flexible material, and the narrowed end is hinged on the control rod. The collecting member also includes a support rib installed on the inner side of the collector, and the support rib extends from the narrowed end to the expanded end. The number of the support ribs is at least two, and at least two of the support ribs are evenly arranged around the circumference of the collector. The support ribs are hinged on the support rod or the guide tube extending out of the adjustment hole.

8. The hole protection device according to claim 7, characterized in that: The collecting member further comprises a connecting rod, and the connecting rod is hinged between the supporting rib and the guide tube.

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