CN216588471U - Hydraulic drive pick bead reaming device - Google Patents
Hydraulic drive pick bead reaming device Download PDFInfo
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- CN216588471U CN216588471U CN202123398149.4U CN202123398149U CN216588471U CN 216588471 U CN216588471 U CN 216588471U CN 202123398149 U CN202123398149 U CN 202123398149U CN 216588471 U CN216588471 U CN 216588471U
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Abstract
The utility model discloses a hydraulic drive pick string of beads reaming device, it includes: a drilling machine; the drilling assembly comprises a first drill rod, a rotating body, a second drill rod and a three-wing drill bit, and a water injection channel penetrates through the first drill rod along the axis direction of the first drill rod. The device mainly comprises a water supply mechanism, a drilling assembly and a reaming assembly, wherein the water supply mechanism changes normal pressure water into high pressure water which is conveyed to the inside of the rotating body through a high pressure hose; the drilling assembly is powered by a drilling machine, and transmits torque to the three-wing drill bit through the first drill rod to perform coal breaking drilling; the reaming component is powered by high-pressure water, the water jet is sprayed out from a nozzle of the rotating body, the rotating body is rotated at a high speed by the generated reaction force, and the reaming component is fixed on the outer side surface of the rotating body and is driven by the rotating body to contact with a coal bed to grind and break coal.
Description
Technical Field
The utility model particularly relates to a coal seam hydraulic machinery reaming technical field in the pit specifically is a hydraulic drive pick string of beads reaming device.
Background
Coal is used as main energy in China, and the important position of the coal cannot be changed in a short period; along with the increase of the excavation depth of coal, under the action of high ground stress, the air permeability of a coal bed is reduced, and the gas pressure is increased; in the coal mining process, the generated disturbance easily causes various dynamic disasters such as coal and gas outburst and the like, so that gas needs to be pre-pumped; when the coal seam has low air permeability, the gas extraction time is long, the extraction concentration is low, the concentration attenuation rate is high, and therefore the coal seam needs to be subjected to permeability increasing treatment.
The traditional hydraulic permeability-increasing measures comprise hydraulic fracturing, hydraulic punching, hydraulic slotting and the like, and the hydraulic permeability-increasing technology has good application effect in a plurality of large mines at home and abroad and has good economic benefit; in a soft coal seam, a hydraulic measure easily causes hole collapse and hole collapse of a drill hole, and when a hard coal seam is subjected to hole expansion, high-pressure water is needed, mostly in hundreds of megapascals, so that the safety is greatly reduced compared with other hole expansion modes; the proposal of a mechanical hole expanding method provides a new idea for increasing the permeability of a coal bed, for example, the application number is CN202021287403.6 discloses a spiral hydraulic mechanical hole expanding device under a coal mine, a cutter arm is in a contraction state during normal pressure drilling, the water pressure is increased when hole expansion is needed, the cutter arm is in contact with a coal body, a drilling machine drives a drill rod to rotate, and the cutter arm is driven to cut the coal body for hole expansion; according to the method, the cutter arm is easy to be blocked when in hole expansion, the hole expansion diameter is limited, coal slag can be influenced by the cutter arm and is difficult to discharge, power is provided by a drilling machine when in hole expansion, the friction force between a drill rod and a drill hole is large, the mechanical efficiency is low, energy waste is caused, and the method is contrary to the concept of green and low-carbon development of a coal mine.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides a hydraulic drive pick string of beads reaming device is in order to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a hydraulically driven pick bead reaming device, comprising:
a drilling machine;
the drilling assembly comprises a first drill rod, a rotating body, a second drill rod and a three-wing drill bit, a water injection channel penetrates through the inside of the first drill rod along the axis direction of the first drill rod, one end of the first drill rod is connected to the driving end of a drilling machine in a driving mode, the other end of the first drill rod is connected to the left port of the rotating body in a threaded mode, three nozzles are arrayed on the outer side face of the rotating body along the circumference direction of the rotating body in a circumferential array mode, each nozzle and the water injection channel are communicated with the inner cavity of the rotating body, the left end of the second drill rod is connected to the right port of the rotating body in a threaded mode, and the right end of the second drill rod is connected with the three-wing drill bit in a threaded mode;
a plurality of reaming assemblies are arranged, and are circumferentially arrayed on the outer side face of the rotating body;
the water supply mechanism, the water supply mechanism includes water tank, plunger pump, reelpipe ware and high-pressure hose, the water inlet of plunger pump adopt the connecting pipe with the inner chamber of water tank is linked together, the fixed intercommunication of delivery port of plunger pump has the one end of high-pressure hose, the other end of high-pressure hose is walked around the reelpipe ware with water injection channel in the drilling rod one is linked together.
Further, preferably, an eccentric angle and an included angle are provided between an extension line of each nozzle and the axis of the rotating body.
Further, as preferred, the reaming subassembly includes string of beads and wire rope, wire rope's one end is all fixed to be set up on the lateral surface of rotator, fixed cover is equipped with the string of beads that a plurality of equidistance distribute on the wire rope, every all the fixed pick that is provided with on the lateral surface of string of beads.
Further, preferably, an isolation sleeve is fixedly arranged on the outer surface of the steel wire rope.
The utility model adopts the above technique, compare with current technique and have following beneficial effect: the device mainly comprises a water supply mechanism, a drilling assembly and a reaming assembly, wherein the water supply mechanism changes normal pressure water into high pressure water which is conveyed to the inside of the rotating body through a high pressure hose; the drilling assembly is powered by a drilling machine, and transmits torque to the three-wing drill bit through the first drill rod to perform coal breaking drilling; the reaming component is powered by high-pressure water, the water jet is sprayed out from a nozzle of the rotating body, the rotating body is rotated at a high speed by the generated reaction force, and the reaming component is fixed on the outer side surface of the rotating body and is driven by the rotating body to contact with a coal bed to grind and break coal.
Drawings
FIG. 1 is a schematic structural view of a hydraulically driven pick bead reaming device;
FIG. 2 is a schematic diagram of a reamer assembly in a hydraulically driven pick bead reaming apparatus;
FIG. 3 is a schematic structural view of a rotary body in a hydraulically driven cutting pick bead reaming device;
fig. 4 is a working principle diagram of a hydraulically driven pick bead reaming device.
In the figure: 1. a first drill rod; 101. a water injection channel; 2. a nozzle; 3. a rotating body; 4. a second drill rod; 5. a three-wing drill bit; 6. a reaming assembly; 601. stringing beads; 602. a cutting pick; 603. an isolation sleeve; 604. a wire rope; 7. a water tank; 8. a plunger pump; 9. a pipe coiling device; 10. a drilling machine; 11. a high pressure hose.
Detailed Description
With reference to the drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below.
Example (b): referring to fig. 1-4, the present invention provides a technical solution: a hydraulically driven pick bead reaming device, comprising:
a drilling machine 10;
the drilling assembly comprises a first drill rod 1, a rotating body 3, a second drill rod 4 and a three-wing drill bit 5, a water injection channel 101 penetrates through the interior of the first drill rod 1 along the axis direction of the first drill rod, one end of the first drill rod 1 is connected to the driving end of a drilling machine 10 in a driving mode, the other end of the first drill rod 1 is connected to the left port of the rotating body 3 in a threaded mode, three nozzles 2 are arrayed on the outer side face of the rotating body 3 along the circumference direction of the outer side face of the rotating body 3 in a circumferential mode, each nozzle 2 and the water injection channel 101 are communicated with the inner cavity of the rotating body 3, the left end of the second drill rod 4 is connected to the right port of the rotating body 3 in a threaded mode, and the right end of the second drill rod 4 is connected to the three-wing drill bit 5 in a threaded mode;
a plurality of reaming assemblies 6 are arranged, and the plurality of reaming assemblies 6 are circumferentially arrayed on the outer side face of the rotating body 3;
the water supply mechanism comprises a water tank 7, a plunger pump 8, a pipe coiling device 9 and a high-pressure hose 11, a water inlet of the plunger pump 8 is communicated with an inner cavity of the water tank 7 through a connecting pipe, a water outlet of the plunger pump 8 is fixedly communicated with one end of the high-pressure hose 11, and the other end of the high-pressure hose 11 is communicated with a water injection channel 101 in the drill rod I1 by bypassing the pipe coiling device 9.
In this embodiment, an eccentric angle and an included angle are provided between an extension line of each nozzle 2 and an axis of the rotating body 3.
In this embodiment, the reaming component 6 includes beads 601 and a steel wire rope 604, one end of the steel wire rope 604 is fixedly disposed on the outer side surface of the rotating body 3, a plurality of beads 601 distributed at equal intervals are fixedly sleeved on the steel wire rope 604, and a cutting pick 602 is fixedly disposed on the outer side surface of each bead 601; specifically, the beads 601 and the steel wire rope 604 are fixed by brazing.
In this embodiment, an isolation sleeve 603 is fixedly disposed on the outer surface of the steel wire rope 604.
An implementation method of a hydraulically-driven cutting pick bead reaming device comprises the following steps:
the method comprises the following steps: starting a power supply of the plunger pump 8, setting the pressure of the plunger pump to be 1-3 MPa, wherein the rotating body 3 does not rotate, and low-pressure water is used for discharging slag; turning on a power supply of a drilling machine 10, setting the drilling speed and the torque of the drilling machine, and driving a first drill rod 1, a second drill rod 4 and a three-wing drill bit 5 to drill and break coal in a rotating mode by the drilling machine 10;
step two: when hole expanding operation is required, the drilling machine 10 is closed, the pressure of the plunger pump 8 is adjusted to be 25-30 MPa, high-pressure water jet is sprayed out from the nozzle 2, the rotating body 3 can rotate and generate self-advancing force due to the fact that an eccentric angle and an included angle are formed between the nozzle 2 and the axis of the rotating body 3, the rotating body 3 rotates to drive the hole expanding assembly 6 located on the outer side of the rotating body to gradually expand and contact with a coal bed body, and therefore cutting and coal breaking are achieved;
step three: after the reaming depth and the reaming length are reached, adjusting the pressure of a plunger pump 8 to be 1-3 MPa, and opening a drilling machine 10 to continue drilling operation;
step four: and (4) because each drill hole has a plurality of holes to be reamed, repeating the second step and the third step when the hole is reamed next time, and finishing the reaming operation.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (4)
1. The utility model provides a hydraulic drive pick string of beads reaming device which characterized in that, it includes:
a drilling machine (10);
the drilling assembly comprises a first drill rod (1), a rotating body (3), a second drill rod (4) and a three-wing drill bit (5), a water injection channel (101) penetrates through the first drill rod (1) along the axis direction of the first drill rod, one end of the first drill rod (1) is connected to the driving end of a drilling machine (10) in a driving mode, the other end of the first drill rod (1) is connected to the left port of the rotating body (3) in a threaded mode, three nozzles (2) are arrayed on the outer side face of the rotating body (3) along the circumference of the rotating body in the circumferential direction, each nozzle (2) and each water injection channel (101) are communicated with the inner cavity of the rotating body (3), the left end of the second drill rod (4) is connected to the inner port of the right port of the rotating body (3) in a threaded mode, and the right end of the second drill rod (4) is connected with the three-wing drill bit (5) in a threaded mode;
a plurality of reaming assemblies (6) are arranged, and the plurality of reaming assemblies (6) are circumferentially arrayed on the outer side face of the rotating body (3);
the water supply mechanism, the water supply mechanism includes water tank (7), plunger pump (8), reelpipe ware (9) and high-pressure hose (11), the water inlet of plunger pump (8) adopt the connecting pipe with the inner chamber of water tank (7) is linked together, the fixed intercommunication of delivery port of plunger pump (8) has the one end of high-pressure hose (11), the other end of high-pressure hose (11) is walked around reelpipe ware (9) with water injection channel (101) in drilling rod (1) are linked together.
2. The hydraulic drive pick bead reaming device of claim 1, wherein: and an eccentric angle and an included angle are arranged between the extension line of each nozzle (2) and the axis of the rotating body (3).
3. The hydraulic drive pick bead reaming device of claim 2, wherein: reaming subassembly (6) are including string of beads (601) and wire rope (604), the one end of wire rope (604) is all fixed to be set up on the lateral surface of rotator (3), fixed cover is equipped with a plurality of equidistance distribution's string of beads (601) on wire rope (604), every all fixed pick (602) that is provided with on the lateral surface of string of beads (601).
4. The hydraulic drive pick bead reaming device of claim 3, wherein: an isolation sleeve (603) is fixedly arranged on the outer surface of the steel wire rope (604).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123398149.4U CN216588471U (en) | 2021-12-30 | 2021-12-30 | Hydraulic drive pick bead reaming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123398149.4U CN216588471U (en) | 2021-12-30 | 2021-12-30 | Hydraulic drive pick bead reaming device |
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| Publication Number | Publication Date |
|---|---|
| CN216588471U true CN216588471U (en) | 2022-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123398149.4U Active CN216588471U (en) | 2021-12-30 | 2021-12-30 | Hydraulic drive pick bead reaming device |
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| Country | Link |
|---|---|
| CN (1) | CN216588471U (en) |
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2021
- 2021-12-30 CN CN202123398149.4U patent/CN216588471U/en active Active
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