CN117027631A

CN117027631A - Hydraulic impact drilling device

Info

Publication number: CN117027631A
Application number: CN202311157099.1A
Authority: CN
Inventors: 曹良
Original assignee: Suzhou Keyi Oil Gas Engineering Equipment Service Co ltd
Current assignee: Suzhou Keyi Oil Gas Engineering Equipment Service Co ltd
Priority date: 2023-09-08
Filing date: 2023-09-08
Publication date: 2023-11-10

Abstract

The application relates to a hydraulic percussion drilling device, comprising a drill rod and a reamer, and further comprising: the mud motor is fixedly connected with the drill rod, and mud enters the mud motor from the drill rod to drive the inner ring of the mud motor to rotate; one end of the outer sleeve is fixedly sleeved on the stator of the mud motor in a sealing way, and the other end of the outer sleeve is provided with an reamer; the sliding block is used for impacting the reamer; the conversion mechanism comprises a driving shaft fixedly connected with the inner ring of the mud motor, and is used for converting rotation of the driving shaft into reciprocating driving of the impact member; and a mud discharging system for connecting mud in the driving shaft to a mud inlet of the reamer. According to the scheme, the mud forming impact device can be fully utilized to form the secondary impact drilling hole with a relatively simple structure, chips are well discharged, and the whole drilling construction is smoother.

Description

Hydraulic impact drilling device

Technical Field

The application relates to the technical field of non-excavation drilling equipment, in particular to a hydraulic impact drilling device.

Background

Non-excavation construction has become a relatively mature engineering construction technology at present, and is mainly used for drilling construction of pipeline laying. The currently commonly used construction machinery is a horizontal directional drilling machine and a reamer.

Under the condition that the underground soil layer is more solid, a set of pneumatic impact hammer is sometimes added between the drill rod and the reamer to realize impact on the reamer and accelerate the breaking of the rock soil layer.

The pneumatic impact requires to be additionally provided with a set of pneumatic system, such as a compressor, a compression pipeline and the like, the structure is relatively complicated, and when working conditions of large aperture and long distance are met in the construction of the horizontal directional drilling machine, the drilled rock cannot be smoothly discharged out of the hole through compressed air, the rock cannot be accumulated in the hole, phenomena of difficult drilling, pipe holding and the like occur, and the construction cannot be smoothly carried out.

Disclosure of Invention

In order to solve the technical problems, the application provides the hydraulic impact drilling device, which can fully utilize slurry to form an impact device to form a secondary impact drilling hole with a relatively simple structure, and the chips are discharged relatively well, so that the overall use is smoother, and the construction efficiency is ensured.

In order to achieve the above purpose, the technical scheme of the application is as follows:

a hydraulic percussion drilling apparatus comprising a drill rod and a reamer, further comprising:

the mud motor is fixedly connected with the drill rod, and mud enters the mud motor from the drill rod to drive the inner ring of the mud motor to rotate;

one end of the outer sleeve is fixedly sleeved on the mud motor stator in a sealing way, and the reamer is arranged at the other end of the outer sleeve;

the reamer further comprises a sliding block which slides inside the outer sleeve in a reciprocating manner along the axis of the outer sleeve and is used for impacting the reamer;

the conversion mechanism comprises a driving shaft fixedly connected with the inner ring of the mud motor, and is used for converting rotation of the driving shaft into reciprocating driving of the impact member;

and a mud discharging system for connecting mud in the driving shaft to a mud inlet of the reamer.

According to the technical scheme, in the underground drilling process, the horizontal directional drilling machine drives the drill rod to rotate so as to drive the outer sleeve to rotate together and further drive the reamer to rotate so as to perform primary drilling on an underground structure, when the primary drilling is performed, slurry enters the drill rod, the slurry motor drives the drive shaft to rotate so as to drive the impact member to reciprocate through the conversion mechanism, so that the reamer is impacted continuously so as to perform secondary drilling, the smoothness of drilling is greatly improved, the slurry enters the reamer through the slurry discharging system, the slurry is fully utilized, excessive structures are not required to be additionally arranged, the structure is compact and ingenious, and the effect of deep smooth drilling is realized.

As one optional embodiment of the application, the slurry discharging system comprises a slurry separating convex edge arranged on the outer ring of the driving shaft, a slurry separating sleeve arranged outside the slurry separating convex edge in a sealing manner, and a slurry separating pipe communicated with the slurry separating sleeve, wherein the slurry separating convex edge and the slurry separating sleeve are respectively internally provided with a passage for slurry to pass through, and the other end of the slurry separating pipe is communicated with a slurry inlet of the reamer.

According to the technical scheme, the structure is designed to be an adaptive structure which is made in a way that rotation between the driving shaft and the outer sleeve is asynchronous, the slurry separating sleeve, the driving shaft and the slurry separating convex edge can form relative rotation, slurry enters the slurry separating sleeve from the slurry separating convex edge and finally flows into the reamer from the slurry separating pipe, and smooth circulation of the slurry is guaranteed.

As one alternative embodiment of the application, a keyed connection is formed between the reamer and the outer sleeve such that the reamer is a slip fit within the outer sleeve, the outer sleeve having anti-slip structure disposed therein to define the sliding position of the reamer.

As one optional implementation scheme of the application, a guide channel is arranged in the outer sleeve, the anti-disengaging mechanism comprises a limit flange arranged in the guide channel and a limit block sliding in the guide channel, one end of the limit block is T-shaped and is in clamping fit with the limit flange, and the other end of the limit block is fixedly connected with the reamer.

As one of the alternative embodiments of the present application, the stopper is bolted to the reamer.

As one of the alternative embodiments of the present application, the switching mechanism includes:

the gear transmission system comprises a driving bevel gear fixedly sleeved at the end part of the driving shaft and a driven bevel gear rotatably arranged at the inner side of the outer sleeve, and the driving bevel gear is meshed with the driven bevel gear;

the crank rocker system comprises a crank fixedly arranged on the shaft of the driven bevel gear and a connecting rod hinged at one end of the crank, and the connecting rod is hinged at one end of the sliding block.

As one optional implementation mode of the application, the other end of the outer sleeve is provided with a sealing cover, and the peripheral side of the sealing cover is fixedly connected with the inner wall of the outer sleeve.

As an alternative embodiment of the application, the driving shaft comprises a first shaft and a second shaft which are directly connected with the inner ring of the mud motor, and a speed reducer is arranged between the first shaft and the second shaft.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through fixed outer sleeve in the mud motor outside, the reamer is fixed to outer sleeve tip to can drive the reamer when making the outer sleeve rotate and realize preliminary drilling, dispose conversion mechanism and sliding block in the outer sleeve again and turn into the rotation of mud motor and constantly strike the reamer, and overall structure design is compact ingenious, has utilized the drive of mud to form secondary impact ingeniously, effectively improves and drills into smooth and easy nature.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an overall sectional view of a hydraulic percussion drilling apparatus of example 1;

fig. 2 is a partial cross-sectional view of embodiment 1 mainly showing a reamer coupling structure;

FIG. 3 is a cross-sectional view of embodiment 1 mainly for showing the switching mechanism;

FIG. 4 is a cross-sectional view of example 1 mainly for showing a pulp discharging system;

fig. 5 is a sectional view for showing the pulp discharging system in example 2.

Reference numerals: 1. a drill rod; 2. a reamer; 3. a mud motor; 4. an outer sleeve; 5. a sliding block; 6. a conversion mechanism; 71. separating pulp convex edges; 72. a slurry separating sleeve; 73. a slurry separating pipe; 8. an anti-falling structure; 81. a limit flange; 82. a limiting block; 9. a guide sleeve; 91. a guide channel; 101. a drive shaft; 1011. a first shaft; 1012. a second shaft; 102. a gear transmission system; 1021. a driving helical gear; 1022. driven helical gears; 103. a crank rocker system; 1031. a crank; 1032. a connecting rod; 1033. an intermediate lever; 12. sealing cover; 13. a speed reducer; 14. a bracket; 151. a shunt sleeve; 1511. a shunt groove; 152. a diversion aperture; 153. a shunt tube.

Detailed Description

The application is described in further detail below with reference to fig. 1-5.

Example 1

Referring to fig. 1, a hydraulic impact drilling device disclosed in an embodiment of the present application includes a drill rod 1, a mud motor 3, that is, a screw motor is screwed and fixed at an end of the drill rod 1, a stator of the screw motor is fixedly connected with an end of the drill rod 1, mud enters the screw motor from a central hole of the drill rod 1 to realize rotor driving of the screw motor, and a driving shaft 101 is fixedly assembled on a rotor of the screw motor.

Referring to fig. 1 and 2, an outer sleeve 4 is fixedly arranged on the outer wall of the stator of the screw motor, one end part of the outer sleeve 4 close to the screw motor is fixedly connected to the outer wall of the stator of the screw motor in a sealing way, the other end of the outer sleeve 4 is used for arranging and installing the reamer 2, a sealing cover 12 is further arranged at the other end of the outer sleeve 4, and the sealing cover 12 is clamped at the end part of the outer sleeve 4 and is fixedly welded. When underground drilling is carried out, the horizontal directional drilling machine on the ground drives the drill rod 1 to rotate and feed, and the drill rod 1 drives the outer sleeve 4 and the reamer 2 to synchronously rotate and feed while rotating and feeding, so that preliminary drilling is realized.

Referring to fig. 1 and 2, a guide channel 91 is provided on the inner wall of the outer sleeve 4, in this embodiment, the guide channel 91 is formed by fixing a guide sleeve 9 on the inner wall of the outer sleeve 4, the guide sleeve 9 is fixed on a sealing cover 12 by bolts, a key connection structure is provided between the inner wall of the guide sleeve 9 and the reamer 2, so that the reamer 2 can be driven to rotate by the guide sleeve 9 and slide along the guide sleeve 9, in order to avoid the reamer 2 from separating from the guide channel 91, an anti-separating structure 8 is provided between the inner wall of the guide sleeve 9 and the reamer 2, the anti-separating structure 8 comprises a limit flange 81 arranged on the inner wall of the guide channel 91 and a limit block 82 arranged by clamping and matching the limit flange 81, one end of the limit block 82 is in a T shape, thereby the limit block 82 can slide at a certain distance and avoid separating, and the other end of the limit block 82 is in screw thread fixed fit with the end of the reamer 2.

Referring to fig. 1 and 2, the driving shaft 101 includes a first shaft 1011 fixedly connected directly to a rotor of the screw motor and a second shaft 1012 connected to the first shaft 1011, and a speed reducer 13 is provided between the first shaft 1011 and the second shaft 1012 for ensuring stable transmission of torque of the driving shaft 101. A sliding block 5 is slidably provided in the guide passage 91, and the sliding block 5 is used for realizing an impact function on the stopper 82.

Referring to fig. 1 and 3, a conversion mechanism 6 for converting rotation of a driving shaft 101 into reciprocating movement of a sliding block 5 is arranged in an outer sleeve 4, the conversion mechanism 6 comprises a gear transmission system 102 and a crank rocker system 103, wherein the gear transmission system 102 comprises a driving bevel gear 1021 fixedly sleeved at the end part of a second shaft 1012 and at least two driven bevel gears 1022 rotatably arranged on the inner side of the outer sleeve 4, two symmetrical brackets 14 are fixedly arranged on the inner wall of the outer sleeve 4 in the embodiment, the driven bevel gears 1022 are respectively arranged on the brackets 14, and the driving bevel gear 1021 is meshed with the driven bevel gears 1022; the crank 1031 and link 1032 system includes a crank 1031 fixedly disposed on the shaft of the driven helical gear 1022 and a link 1032 hinged at one end of the crank 1031, the link 1032 being hinged at one end of the slider 5, and in this embodiment, an intermediate bar 1033 being hinged between the two links 1032, the intermediate bar 1033 being disposed through one end of the slider 5.

When the mud pump works, the mud pump drives the first shaft 1011 to rotate, torque is transmitted to the second shaft 1012 through the speed reducer 13, the second shaft 1012 drives the driving bevel gear 1021 to rotate, and then drives the two driven bevel gears 1022 to rotate, and further drives the crank 1031 to rotate around the axis of the driven bevel gears 1022, and further drives the sliding block 5 to reciprocate through the connecting rod 1032 and the middle rod 1033, so that continuous impact on the limiting block 82 is finally realized.

Referring to fig. 1 and 4, a mud discharging system for introducing mud into the reamer 2 and discharging the mud following rotation of the reamer 2 is further provided on the first shaft 1011, and the mud discharging system includes a mud dividing flange 71 provided on an outer circumference of the first shaft 1011, the mud dividing flange 71 being formed in a ring shape and a passage provided in the mud dividing flange 71 for guiding out the mud; the device also comprises a slurry separating sleeve 72, wherein the slurry separating sleeve 72 is in rotary fit outside the first shaft 1011, a channel is also arranged on the slurry separating sleeve 72 for leading out slurry, and the slurry separating sleeve 72 is in rotary seal fit with the slurry separating convex edge 71; the slurry driving device is characterized by further comprising a slurry separating pipe 73 communicated with the slurry separating sleeve 72, the other end of the slurry separating pipe 73 is communicated with a slurry inlet of the reamer 2, the slurry drives the driving shaft 101 to rotate and then enters the reamer 2 from the slurry separating convex edge 71, the slurry separating sleeve 72 and the slurry separating pipe 73 to be sprayed into an underground soil layer to improve the convenience of reaming, the partial structure is an adaptive structural design which is made for asynchronous rotation between the driving shaft 101 and the outer sleeve 4, relative rotation can be formed between the slurry separating sleeve 72 and the driving shaft 101 and between the slurry separating convex edge 71, slurry enters the slurry separating sleeve 72 from the slurry separating convex edge 71 and finally flows into the reamer 2 from the slurry separating pipe 73, and smooth circulation of the slurry is ensured. Since the reamer 2 is subjected to impact displacement in the axial direction, the end of the slurry dividing pipe 73 may be provided as a hose to adapt to the displacement of the reamer 2.

Example 2

Referring to fig. 5, the difference from embodiment 1 is that the pulp discharging system includes a diverting sleeve 151 rotatably fitted on the outer wall of a first shaft 1011, both ends of the diverting sleeve 151 are rotatably connected with the outer wall of the first shaft 1011 through bearings, an annular diverting groove 1511 is opened at the middle position of the diverting channel, the diverting sleeve 151 is disposed at both left and right sides of the diverting groove 1511 and is provided with a rotary sealing structure, a diverting hole 152 is opened on the first shaft 1011 to communicate with the diverting groove 1511, a diverting pipe 153 is fixed on the outer wall of the diverting sleeve 151, and the diverting pipe 153 communicates with the diverting groove 1511. The setting structure is more compact, the structure of the slurry separating convex edge 71 is not needed, and the processing and the assembly are simpler.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. Hydraulic percussion drilling apparatus comprising a drill rod (1) and a reamer (2), characterized in that it further comprises:

the mud motor (3) is fixedly connected with the drill rod (1), and mud enters the mud motor (3) from the drill rod (1) to drive a rotor of the mud motor (3) to rotate;

one end of the outer sleeve (4) is fixedly sleeved on a stator of the mud motor (3) in a sealing manner, and the reamer (2) is arranged at the other end of the outer sleeve (4);

-a sliding block (5) reciprocally sliding inside the outer sleeve (4) along the axis of the outer sleeve (4), said sliding block (5) being intended to impact the reamer (2);

the device also comprises a conversion mechanism (6), wherein the conversion mechanism (6) comprises a driving shaft (101) fixedly connected with the inner ring of the mud motor (3), and the conversion mechanism (6) is used for converting the rotation of the driving shaft (101) into the reciprocating driving of the impact member;

and a mud discharging system for introducing mud in the driving shaft (101) to a mud inlet of the reamer (2).

2. The hydraulic percussion drilling apparatus according to claim 1, wherein: the slurry discharging system comprises a slurry separating convex edge (71) arranged on the outer ring of the driving shaft (101), a slurry separating sleeve (72) arranged outside the slurry separating convex edge (71) in a sealing manner, and a slurry separating pipe (73) communicated with the slurry separating sleeve (72), wherein passages for slurry to pass through are formed in the slurry separating convex edge (71) and the slurry separating sleeve (72), and the other end of the slurry separating pipe (73) is communicated with a slurry inlet of the reamer (2).

3. The hydraulic percussion drilling apparatus according to claim 1, wherein: the reamer (2) is connected with the outer sleeve (4) in a key way so that the reamer (2) is in sliding fit in the outer sleeve (4), and an anti-falling structure (8) is arranged in the outer sleeve (4) to limit the sliding position of the reamer (2).

4. A hydraulic percussion drilling apparatus according to claim 3, characterised in that: be equipped with direction passageway (91) in outer sleeve (4), the anti-disengaging mechanism is including setting up limit flange (81) and the stopper (82) of sliding in direction passageway (91), the one end of stopper (82) is T style of calligraphy and limit flange (81) joint cooperation, the other end and reamer (2) fixed connection of stopper (82).

5. The hydraulic percussion drilling apparatus according to claim 4, wherein: the limiting block (82) is connected with the reamer (2) through bolts.

6. The hydraulic percussion drilling apparatus according to claim 1, wherein: the switching mechanism (6) includes:

the gear transmission system (102) and the crank rocker system (103), wherein the gear transmission system (102) comprises a driving bevel gear (1021) fixedly sleeved at the end part of the driving shaft (101) and a driven bevel gear (1022) rotatably arranged at the inner side of the outer sleeve (4), and the driving bevel gear (1021) is meshed with the driven bevel gear (1022);

the crank rocker system (103) comprises a crank (1031) fixedly arranged on the shaft of the driven bevel gear (1022) and a connecting rod (1032) hinged to one end of the crank (1031), and the connecting rod (1032) is hinged to one end of the sliding block (5).

7. The hydraulic percussion drilling apparatus according to claim 1, wherein: the other end of the outer sleeve (4) is provided with a sealing cover (12), and the peripheral side of the sealing cover (12) is fixedly connected with the inner wall of the outer sleeve (4).

8. The hydraulic percussion drilling apparatus according to claim 1, wherein: the driving shaft (101) comprises a first shaft (1011) and a second shaft (1012), wherein the first shaft (1011) and the second shaft (1012) are directly connected with the inner ring of the mud motor (3), and a speed reducer (13) is arranged between the first shaft (1011) and the second shaft (1012).