CN214943964U - Foldable ground bullet drilling device for water treatment site - Google Patents
Foldable ground bullet drilling device for water treatment site Download PDFInfo
- Publication number
- CN214943964U CN214943964U CN202120344913.0U CN202120344913U CN214943964U CN 214943964 U CN214943964 U CN 214943964U CN 202120344913 U CN202120344913 U CN 202120344913U CN 214943964 U CN214943964 U CN 214943964U
- Authority
- CN
- China
- Prior art keywords
- drill bit
- bullet
- hinged
- water treatment
- tapping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 238000010079 rubber tapping Methods 0.000 claims abstract description 35
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 33
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 239000010802 sludge Substances 0.000 abstract description 16
- 230000033001 locomotion Effects 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The application discloses a foldable ground-drilling bullet device for a water treatment site, which comprises a drill bit lower part, a movable joint, a drill bit upper part, a hard-tapping bullet, a ground-drilling blade and a stress detection sensor, wherein the drill bit lower part is connected with the drill bit upper part through the movable joint, the hard-tapping bullet is arranged at the output end of the drill bit upper part, the ground-drilling blade is hinged to the edge of the hard-tapping bullet, and the stress detection sensor is arranged at the top of the hard-tapping bullet; the drill bit further comprises a cylinder supporting leg, and the cylinder supporting leg is hinged between the earth drilling blade and the upper part of the drill bit. The earth drilling blade can be opened by an opening angle in a controllable manner to perform sludge reaming, so that the solid attacking bullet is prevented from being excessively blocked by sludge; when the drill bit is recovered, the earth drilling blade can rotate to loosen sludge, so that the situation that the drill bit is blocked and difficult to pull out due to deep sludge is avoided; the cylinder supporting legs are combined with the peristaltic supporting legs, so that drill bit shaking caused by peristaltic movement of the drill bit in sludge can be reduced.
Description
Technical Field
The application relates to the technical field of environmental protection refuse treatment, particularly, relate to a collapsible ground bullet device that bores of water treatment scene.
Background
In the municipal administration desilting operation, need carry out water treatment, utilize the drill bit to drill to the scene that needs water treatment, the later stage pump line of being convenient for can get into drilling depths and pump and move and erode the washing for basement such as riverbed can erode totally.
In the prior art, a ground drilling machine is generally adopted to drill holes on a water treatment site, and a drill bit of the drilling machine is fixed, so that only the holes with fixed apertures can be drilled.
On the water treatment site, the sludge in the hole drilled is more, and the situation that the drill bit is blocked and difficult to pull out due to deep sludge is frequently caused; in addition, there is no support creep between the drill and the hole wall when the drill drills, which causes the drill to shake and cannot form a stable cavity.
SUMMERY OF THE UTILITY MODEL
The main objective of this application is to provide a collapsible ground bullet device that bores in water treatment scene to solve present problem.
In order to achieve the above object, the present application provides the following techniques:
a foldable ground drilling bullet device for a water treatment site comprises a drill bit lower part, a movable joint, a drill bit upper part, an attacking bullet, a ground drilling blade and a stress detection sensor, wherein the drill bit lower part is connected with the drill bit upper part through the movable joint, the attacking bullet is arranged at the output end of the drill bit upper part, the ground drilling blade is hinged to the edge of the attacking bullet, and the stress detection sensor is arranged at the top of the attacking bullet; the drill bit further comprises a cylinder supporting leg, and the cylinder supporting leg is hinged between the earth drilling blade and the upper part of the drill bit.
Furthermore, the drilling bit further comprises peristaltic support legs, wherein at least two groups of peristaltic support legs are arranged on the outer side face of the lower portion of the drilling bit along the axis direction.
Furthermore, every group the quantity of wriggling supporting leg includes three at least, and in the even articulated setting of circumference on the lateral surface of drill bit lower part.
Furthermore, peristaltic supporting blocks are arranged on the peristaltic supporting legs, and rubber pads are arranged on the back faces of the peristaltic supporting blocks.
Further, the drilling tool also comprises a control port which is sealed on the bottom surface of the lower part of the drilling head through a flange.
Further, circumference evenly is equipped with three at least articulated seats on the lateral surface of drill bit upper portion, be equipped with on the medial surface of boring ground blade and correspond the supplementary articulated seat of articulated seat, the cylinder supporting leg articulates articulated seat with supplementary articulated seat between.
Further, the length ratio of the lower drill bit portion to the upper drill bit portion is 1.5-3.5.
Furthermore, the tapping nut warhead is conical, and the taper of the tapping nut warhead is 1.0-3.0; the edge of the nut tapping warhead is provided with at least three hinged parts, and the ground drilling blade is hinged with the hinged parts.
Further, a driving shaft is arranged inside the lower part of the drill bit and connected with the control port; the inside of the lower part of the drill bit is also provided with a speed changer, and the driving shaft is connected with the speed changer and the movable joint.
Furthermore, a replaceable driving shaft is arranged inside the upper portion of the drill bit and connected with the movable joint.
Compared with the prior art, this application can bring following technological effect:
1. the lower part of the drill bit of the utility model is connected with the upper part of the drill bit through the movable joint, the hard tapping bullet is arranged at the output end of the upper part of the drill bit, the ground drilling blade is hinged at the edge of the hard tapping bullet, the hard tapping bullet is driven by the driving shaft in the drill bit theme to drill the ground, and the ground drilling blade hinged on the hard tapping bullet can controllably open the opening angle to ream the sludge, so that the hard tapping bullet is prevented from being blocked by the sludge in transition; when the drill bit is recovered, the earth drilling blade can rotate to loosen sludge, so that the situation that the drill bit is blocked and difficult to pull out due to deep sludge is avoided;
2. the utility model also arranges the stress detection sensor at the top of the tapping nut warhead; the stress detection sensor can avoid drilling a hard underlayer and protect the blade and the drill bit;
3. the drill bit further comprises a cylinder supporting leg, and the cylinder supporting leg is hinged between the earth drilling blade and the upper part of the drill bit. The cylinder supporting legs form stable tension load between the drill bit and the hole wall when the drill bit drills, and the creep of the drill bit in silt can be reduced by combining with the creep supporting legs
The bit rattles as a result of the motion.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
fig. 1 is a schematic three-dimensional structure of the present invention;
fig. 2 is a schematic front view of the present invention;
fig. 3 is a schematic top view of the present invention;
fig. 4 is a schematic view of the internal structure of the present invention;
in the figure: 1. the device comprises a hard-tapping warhead, 2, a ground drilling blade, 3, a stress detection sensor, 4, a hinged seat, 5, an upper part of a drill bit, 6, a peristaltic supporting leg, 7, a peristaltic supporting block, 8, a movable joint, 9, a lower part of the drill bit, 10, a control port, 11, a driving shaft, 12, a transmission, 13 and a replaceable driving shaft.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
A foldable ground drilling bullet device for a water treatment site comprises a drill bit lower part 9, a movable joint 8, a drill bit upper part 5, a hard attack bullet 1, a ground drilling blade 2 and a stress detection sensor 3, wherein the drill bit lower part 9 is connected with the drill bit upper part 5 through the movable joint 8, the hard attack bullet 1 is arranged at the output end of the drill bit upper part 5, the ground drilling blade 2 is hinged to the edge of the hard attack bullet 1, and the stress detection sensor 3 is arranged at the top of the hard attack bullet 1; the drill bit further comprises a cylinder supporting leg which is hinged between the earth drilling blade 2 and the drill bit upper part 5.
As shown in fig. 1-3, the lower portion of the drill bit of the present invention is connected to the upper portion of the drill bit through the movable joint, the hard-tapping bullet is disposed at the output end of the upper portion of the drill bit, the ground-drilling blade is hinged to the edge of the hard-tapping bullet, the hard-tapping bullet is driven by the driving shaft inside the drill bit theme to perform ground-drilling work, and the ground-drilling blade hinged to the hard-tapping bullet can be controllably opened to open an angle for sludge reaming, so as to prevent sludge from excessively blocking the hard-tapping bullet; when the drill bit is recovered, the earth drilling blade can rotate to loosen sludge, so that the situation that the drill bit is blocked and difficult to pull out due to deep sludge is avoided;
the utility model discloses a unit formula is connected and is constituteed from top to bottom, including drill bit lower part 9, activity festival 8, drill bit upper portion 5, attack hard warhead 1, bore ground blade 2 and stress detection sensor 3, as shown in attached figure 1 and 2, drill bit lower part 9, activity festival 8, drill bit upper portion 5 are main drive shaft part, and inside contains the drive shaft for the hard warhead 1 of attacking of drive top.
The hard attacking bullet 1 is hinged with the ground drilling blade 2, and the ground drilling blade 2 cuts surrounding sludge to enlarge holes under the driving of the hard attacking bullet 1.
The top of the tapping nut warhead 1 is screwed with a hard protective cover for installing a stress detection sensor 3, and the depth of the tapping nut warhead 1 is adjusted according to detection data.
The concrete connection structure is as follows: the lower part 9 of the drill bit is connected with the upper part 5 of the drill bit through the movable joint 8, the movable joint 8 is similar to a universal joint, a flexible adjusting shaft outputs power, the hard tapping bullet 1 is provided with a driving shaft, the driving shaft is connected with the output end of the upper part 5 of the drill bit through a flange, the ground drilling blade 2 is hinged to the edge of the hard tapping bullet 1, and the stress detection sensor 3 is arranged at the top of the hard tapping bullet 1;
and a cylinder support leg (not shown) hinged between the earth-boring blade 2 and the drill head upper part 5.
The cylinder supporting legs are used for supporting the earth boring blade 2 and the drill bit upper part 5, so that the load can be dispersed, and the service life is prolonged.
Furthermore, the drilling machine further comprises peristaltic support legs 6, wherein at least two groups of peristaltic support legs 6 are arranged on the outer side surface of the lower portion 9 of the drilling head along the axial direction.
The peristaltic support legs 6 are flexible structures, as shown in figure 2, and at least two groups of peristaltic support legs 6 are arranged on the outer side surface of the lower portion 9 of the drill bit along the axial direction. When the peristaltic support leg 6 works, the tail end of the peristaltic support leg can be supported on the hole wall of the hole, and when the peristaltic drilling operation is carried out, the drill bit can be supported by the peristaltic movement of the hole wall.
During reaming, the hole with a larger diameter is formed in the upper hole in advance, so that a superficial initial hole (larger than a later hole, and convenient for drilling under the ground surface) can be opened in a creeping manner, and later-stage linear drilling is facilitated. At the moment, the peristaltic support leg 6 needs to be supported in a preset hole to support the drill bit to perform peristaltic drilling, and when the drilling is started, the peristaltic support leg 6 is removed.
Furthermore, the number of the peristaltic supporting legs 6 in each group comprises at least three, and the periphery of the outer side surface of the lower portion 9 of the drill bit is uniformly hinged.
Furthermore, a peristaltic supporting block 7 is arranged on the peristaltic supporting leg 6, and a rubber pad is arranged on the back of the peristaltic supporting block 7.
The peristaltic supporting block 7 is a square block welded at the tail end of the peristaltic supporting leg 6, and aims to improve the contact area and avoid the situation that the peristaltic supporting leg 6 is inserted into the wall surface and cannot be fixed.
Further, the drilling tool also comprises a control port 10, and the control port 10 is sealed on the bottom surface of the lower drill bit part 9 through a flange.
As shown in fig. 4, the control port 10 is a closed connection end, and the control port 10 is flange-sealed to the bottom surface of the lower portion 9 of the drill bit. The control port 10 is used for connecting an external driving device.
Example 2
The foldable ground-boring bullet device for the water treatment site comprises a drill bit lower part 9, a movable joint 8, a drill bit upper part 5, an attack nut bullet 1, a ground-boring blade 2 and a stress detection sensor 3, wherein the drill bit lower part 9 is connected with the drill bit upper part 5 through the movable joint 8, the attack nut bullet 1 is arranged at the output end of the drill bit upper part 5, the ground-boring blade 2 is hinged to the edge of the attack nut bullet 1, and the stress detection sensor 3 is arranged at the top of the attack nut bullet 1; the drill bit further comprises a cylinder supporting leg which is hinged between the earth drilling blade 2 and the drill bit upper part 5.
In this embodiment, in addition to the fixed structure provided at the lower portion of the drill, a stabilizing structure is provided at the upper portion 5 of the drill, as shown in fig. 4, in order to install the cylinder support legs,
furthermore, 5 circumference evenly is equipped with three at least articulated seats 4 on the lateral surface of drill bit upper portion 5, be equipped with on the medial surface of boring ground blade 2 and correspond the supplementary articulated seat of articulated seat 4, the cylinder supporting leg articulates articulated seat 4 with between the supplementary articulated seat.
The cylinder supporting legs are contracted between the hinge seat 4 and the auxiliary hinge seat, so that the shell of the upper part 5 of the drill bit can share part of the working load and pressure of the earth boring blade 2, and the service life is prolonged.
Further, the length ratio of the bit lower portion 9 to the bit upper portion 5 is 1.5 to 3.5.
In this embodiment, the length of the lower bit portion 9 and the length of the upper bit portion 5 are important to avoid an excessive length, and the ratio of the lengths of the lower bit portion 9 and the upper bit portion 5 is preferably set to 2.0.
Furthermore, the tapping nut warhead 1 is conical, and the taper of the tapping nut warhead is 1.0-3.0; the edge of the nut tapping warhead 1 is provided with at least three hinged parts, and the ground drilling blade 2 is hinged with the hinged parts.
The top of the tapping nut warhead 1 is not a pointed cone but a round table, but the taper is 1.0-3.0, preferably 2.0; for hinging the earth-boring blade 2, at least three hinges are integrally formed at the edge of the attack warhead 1, and the earth-boring blade 2 is hinged with the hinges.
Example 3
The foldable ground-boring bullet device for the water treatment site comprises a drill bit lower part 9, a movable joint 8, a drill bit upper part 5, an attack nut bullet 1, a ground-boring blade 2 and a stress detection sensor 3, wherein the drill bit lower part 9 is connected with the drill bit upper part 5 through the movable joint 8, the attack nut bullet 1 is arranged at the output end of the drill bit upper part 5, the ground-boring blade 2 is hinged to the edge of the attack nut bullet 1, and the stress detection sensor 3 is arranged at the top of the attack nut bullet 1; the drill bit further comprises a cylinder supporting leg which is hinged between the earth drilling blade 2 and the drill bit upper part 5.
In the present embodiment, the first and second embodiments,
further, a driving shaft 11 is arranged inside the lower drill bit part 9, and the driving shaft 11 is connected with the control port 10; the inside of the lower drill bit part 9 is also provided with a speed changer 12, and the driving shaft 11 is connected with the speed changer 12 and the movable joint 8.
As shown in fig. 2 and 3, in the present embodiment, a transmission 12 is provided. The drive end of the drive machine is connected to a control port 10 and thus to a drive shaft 11, which is connected to the movable joint 8 via a transmission 12 and finally to the upper drill bit part 5.
As shown in the attached figure 4 of the drawings,
further, a replaceable driving shaft 13 is arranged inside the upper drill bit part 5, and the replaceable driving shaft 13 is connected with the movable joint 8.
Inside the upper end delivery outlet of activity festival 8 stretched into drill bit upper portion 5, for the convenience of changing the drill bit of different specifications the inside removable drive shaft 13 that is equipped with of drill bit upper portion 5, removable drive shaft 13 is a kind of axle that possesses flange joint structure, and the top is connected and is attacked hard warhead 1. Can be replaced according to the field.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The foldable ground drilling bullet device for the water treatment site is characterized by comprising a drill bit lower part (9), a movable joint (8), a drill bit upper part (5), a hard tapping bullet (1), a ground drilling blade (2) and a stress detection sensor (3), wherein the drill bit lower part (9) is connected with the drill bit upper part (5) through the movable joint (8), the hard tapping bullet (1) is arranged at the output end of the drill bit upper part (5), the ground drilling blade (2) is hinged to the edge of the hard tapping bullet (1), and the stress detection sensor (3) is arranged at the top of the hard tapping bullet (1); the drill bit further comprises a cylinder supporting leg, and the cylinder supporting leg is hinged between the earth drilling blade (2) and the drill bit upper portion (5).
2. The foldable earth-boring bomb device for water treatment site as claimed in claim 1, further comprising peristaltic support legs (6), wherein at least two groups of said peristaltic support legs (6) are arranged on the outer side surface of said lower drill bit portion (9) along the axial direction.
3. A water treatment site foldable earth-boring bomb device as claimed in claim 2, characterised in that the number of said peristaltic supporting legs (6) per group includes at least three and they are evenly hinged on the outer side of said lower drill bit part (9) circumferentially.
4. The foldable ground-boring bomb device for water treatment site as claimed in claim 3, characterized in that the peristaltic supporting leg (6) is provided with a peristaltic supporting block (7), and the back of the peristaltic supporting block (7) is provided with a rubber pad.
5. A water treatment on-site foldable earth-boring bomb as claimed in claim 1 or 4, characterised by that it also includes a control port (10), said control port (10) is flanged to the bottom surface of said lower drill bit part (9).
6. The foldable ground-boring elastic device for the water treatment field according to claim 1, wherein at least three hinged seats (4) are uniformly arranged on the outer side surface of the upper drill bit part (5) at the periphery, auxiliary hinged seats corresponding to the hinged seats (4) are arranged on the inner side surface of the ground-boring blade (2), and the cylinder supporting legs are hinged between the hinged seats (4) and the auxiliary hinged seats.
7. A water treatment site foldable earth-boring bomb unit as claimed in claim 1, characterised in that the length ratio of said lower bit part (9) to said upper bit part (5) is 1.5-3.5.
8. The foldable water treatment field ground bomb drilling device as claimed in claim 1, 6 or 7, wherein the tapping nut warhead (1) is conical, and the taper of the tapping nut warhead is 1.0-3.0; the edge of the nut tapping warhead (1) is provided with at least three hinged parts, and the ground drilling blade (2) is hinged with the hinged parts.
9. A water treatment on-site foldable earth-boring bomb unit as claimed in claim 5, characterised in that the lower drill-bit part (9) has a drive shaft (11) inside, said drive shaft (11) being connected to said control port (10); the interior of the lower drill bit part (9) is also provided with a speed changer (12), and the driving shaft (11) is connected with the speed changer (12) and the movable joint (8).
10. A water treatment site foldable earth-boring bomb as claimed in claim 9, characterised in that a replaceable drive shaft (13) is provided inside said upper drill head portion (5), said replaceable drive shaft (13) being connected to said movable joint (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120344913.0U CN214943964U (en) | 2021-02-03 | 2021-02-03 | Foldable ground bullet drilling device for water treatment site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120344913.0U CN214943964U (en) | 2021-02-03 | 2021-02-03 | Foldable ground bullet drilling device for water treatment site |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214943964U true CN214943964U (en) | 2021-11-30 |
Family
ID=79118819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120344913.0U Expired - Fee Related CN214943964U (en) | 2021-02-03 | 2021-02-03 | Foldable ground bullet drilling device for water treatment site |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214943964U (en) |
-
2021
- 2021-02-03 CN CN202120344913.0U patent/CN214943964U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104763328B (en) | A kind of hydraulic pressure reaming circulation drilling machine and its reaming pile constructing process | |
| CN105041201B (en) | Hydraulic gentle vibration speed acceleration drill tool | |
| CN209586278U (en) | A kind of Counterboring apparatus of rotary drilling rig | |
| CN104404951B (en) | Long spire stake machine with expander and pile making method | |
| CN204728997U (en) | The fragmentation of hydraulic rotary drilling rig down-the-hole enters rock and bores | |
| CN112554785A (en) | Anchoring drilling machine | |
| CN209099984U (en) | Multifunctional all-hydraulic digs drilling machine | |
| CN209053566U (en) | A kind of drill bit rotating digging machine | |
| CN214943964U (en) | Foldable ground bullet drilling device for water treatment site | |
| CN206368373U (en) | A kind of open caisson construction equipment | |
| CN108661556A (en) | A kind of units of rotary drilling rig | |
| CN106854879A (en) | There is the rig on the excavator of quartering hammer | |
| CN204627406U (en) | A kind of hydraulic pressure reaming circulation drilling machine | |
| JP2004176530A (en) | Method and apparatus for diameter-enlarged excavation | |
| CN106978815A (en) | A kind of open caisson construction device and construction method | |
| CN201190279Y (en) | Construction equipment for spiral digging small-diameter bored pile | |
| CN205743717U (en) | Drilling rod diameter changeable drill bit mechanism | |
| CN210152541U (en) | Rotary excavating machine pile casing rotating device and rotary excavating machine with same | |
| CN204877262U (en) | Building engineering perforator | |
| JPH05287975A (en) | Rotary table type boring machine using down-the hall-drill @(3754/24)sinker) | |
| CN221703685U (en) | Muddy water pressure balancing device | |
| CN211737053U (en) | Device for assisting in shaking soil and reducing noise of core-taking barrel of rotary excavating pile machine | |
| CN221142754U (en) | Automatic cutting construction device for double-thread bottom expanding pouring | |
| CN219101217U (en) | Large-aperture drilling telescopic variable-diameter drill bit | |
| KR20050036084A (en) | Complex drill device and engineering method using that |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |