CN112593859A - Concentric double-shaft rotary type earth and stone square drilling and digging device for building construction - Google Patents
Concentric double-shaft rotary type earth and stone square drilling and digging device for building construction Download PDFInfo
- Publication number
- CN112593859A CN112593859A CN202011234934.3A CN202011234934A CN112593859A CN 112593859 A CN112593859 A CN 112593859A CN 202011234934 A CN202011234934 A CN 202011234934A CN 112593859 A CN112593859 A CN 112593859A
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- Prior art keywords
- drill rod
- shaft drill
- drilling
- drilling tool
- outer shaft
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- 238000005553 drilling Methods 0.000 title claims abstract description 97
- 239000004575 stone Substances 0.000 title claims abstract description 31
- 238000009435 building construction Methods 0.000 title claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 239000000428 dust Substances 0.000 claims description 11
- 238000010276 construction Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 description 15
- 239000007788 liquid Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000011435 rock Substances 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a concentric double-shaft rotary type earth and stone square drilling and digging device for building construction, which comprises a drilling tool and a drilling tool driving device, wherein the drilling tool driving device is arranged on the drilling tool; the drilling tool comprises an outer shaft drill rod, an inner shaft drill rod, a bearing short joint, a drill bit short joint and a drill bit; the inner shaft drill rod is coaxially arranged inside the outer shaft drill rod, the top ends of the outer shaft drill rod and the inner shaft drill rod are respectively in transmission connection with a drilling tool driving device, and the drilling tool driving device is used for driving the outer shaft drill rod and the inner shaft drill rod to rotate at the same speed or at different speeds; the bearing short circuit is arranged at the bottoms of the outer shaft drill rod and the inner shaft drill rod and is fixedly connected with the inner shaft drill rod and rotatably connected with the outer shaft drill rod; two ends of the drill bit short circuit are respectively and fixedly connected with the bearing short circuit and the drill bit; and blades for reaming and removing debris are arranged on the outer wall of the outer shaft drill rod and the outer wall of the drill bit short joint. The outer shaft drill rod and the inner shaft drill rod of the drilling and digging device can rotate at the same speed or different speeds, the rotating speed is reasonably matched according to the drilling working condition, and the earth and stone drilling and digging efficiency can be improved.
Description
Technical Field
The invention belongs to the technical field of constructional engineering, and particularly relates to a concentric double-shaft rotary type earthwork drilling and excavating device for building construction.
Background
With the rapid development of the construction industry, the drilling and digging operation of earthwork or stone in a construction site is gradually changed from the traditional manual digging into the mechanical drilling and digging. During operation, the driving device of the drilling machine transmits torque and pressure to the drill bit through the drill rod, and the drill bit rotates and feeds under the action of the torque and the pressure, so that a mud layer or a rock layer is cut and tunneled. Therefore, drill rods and bits play an important role in the earth or rock drilling process and are one of the important components of the drilling machine.
However, when the existing drill rod and the existing drill bit are connected together, soil and broken rocks cut by the drill bit often cannot be discharged out of the hole in time and continuously during drilling, so that drilling difficulty and even drill jamming are easily caused.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a concentric double-shaft rotary type earthwork drilling and excavating device for building construction.
The invention is realized by the following technical scheme:
a concentric double-shaft rotary type earth and stone square drilling and excavating device for building construction comprises a drilling tool and a drilling tool driving device, wherein the drilling tool driving device is used for providing torque and drilling pressure for the drilling tool and driving the drilling tool to dig;
the drilling tool comprises an outer shaft drill rod, an inner shaft drill rod, a bearing short joint, a drill bit short joint and a drill bit;
the outer shaft drill rod is a hollow drill rod, the inner shaft drill rod is coaxially arranged inside the outer shaft drill rod, the top ends of the outer shaft drill rod and the inner shaft drill rod are respectively in transmission connection with a drilling tool driving device, and the drilling tool driving device is used for driving the outer shaft drill rod and the inner shaft drill rod to rotate at the same speed or at different speeds; it should be noted that the drilling tool driving device is an existing device or can realize the same-speed rotation or different-speed rotation of the outer shaft drill rod and the inner shaft drill rod and the same-direction rotation and reverse-direction rotation of the outer shaft drill rod and the inner shaft drill rod by using the existing device, for example, the drilling tool driving device comprises a rotary table driving device and/or a top driving device for driving the drilling tool to rotate and a hydraulic telescopic device for applying bit pressure and driving the drilling tool to dig, and the specific structural form and principle of the drilling tool driving device and the drilling tool can refer to a petroleum mechanical drilling machine, and are not described in detail herein;
the bearing short circuit is arranged at the bottoms of the outer shaft drill rod and the inner shaft drill rod, the bearing short circuit is fixedly connected with the inner shaft drill rod, the bearing short circuit is rotatably connected with the outer shaft drill rod, the inner shaft drill rod is rotatably connected with the outer shaft drill rod through the bearing short circuit, the bearing short circuit can enable the inner shaft drill rod and the outer shaft drill rod to be mutually supported, the inner shaft drill rod and the outer shaft drill rod are prevented from being eccentric, and friction between the outer shaft drill rod and the inner shaft drill;
two ends of the drill bit short joint are respectively and fixedly connected with the bearing short joint and the drill bit, and the inner shaft drill rod can drive the drill bit to rotate;
the outer wall of the outer shaft drill rod and the outer wall of the drill bit short joint are provided with blades for reaming and removing debris; in the earth and rockfill drilling and digging process, the outer shaft drill rod and the inner shaft drill rod can rotate at the same speed and also can rotate at different speeds, and the rotating speed of the outer shaft drill rod can be increased according to the soil breaking and gravel discharging conditions in the drilled holes, so that the soil breaking and gravel in the drilled holes can be discharged more quickly.
Further inject, the inside of interior axle drilling rod, bearing short circuit, drill bit short circuit and drill bit all is equipped with the medium runner, is equipped with the nozzle on the drill bit, and the earth and stone side bores and digs the in-process and can pour into high-pressure gas or liquid into the medium runner, and high-pressure gas or liquid are spout by the nozzle to reduce the drill bit temperature, can effectively reduce the wearing and tearing of drill bit, and can carry out the drilling with the earth and stone side piece in the drilling.
Further defined, the bearing sub includes a sub body; the outer side wall of the short-circuit body is sleeved with an outer ring, the outer side wall of the short-circuit body and the inner side wall of the outer ring are provided with corresponding ball grooves, a plurality of steel balls are arranged in the ball grooves, a retainer is arranged among the steel balls, and the retainer separates the steel balls evenly from each other so that each steel ball stably rolls in the ball grooves; the outer ring is fixedly connected with the outer shaft drill rod; specifically, the outer ring is in threaded connection with the outer shaft drill rod; specifically, a male buckle (external thread) and a female buckle (internal thread) are respectively arranged at the bottom end and the top end of the short circuit body, and the short circuit body is in threaded connection with the drill rod and the drill bit; specifically, if necessary, radial lock pins are respectively arranged between the outer ring and the outer shaft drill rod, between the short-circuit body and the drill rod and between the short-circuit body and the drill bit, so that tripping is avoided; the short-circuit body is equivalent to the inner ring of the rolling bearing, the short-circuit body is fixedly connected with the inner shaft drill rod, and the outer ring is fixedly connected with the outer shaft drill rod, so that the inner shaft drill rod and the outer shaft drill rod are rotatably connected.
Further inject, all be equipped with the shield between the top of outer lane and the lateral wall of bottom and short circuit body, can avoid the dust to get into ball slot wearing and tearing steel ball.
Further inject, contact surface between outer axle drilling rod and the short circuit body is equipped with the dust gasket, and the rotation between outer axle drilling rod and the short circuit body is not hindered to the dust gasket, can be resistant to wear, and the dust gasket can prevent that the rubble hack from getting into the bearing short circuit.
Further inject, the wing includes a plurality of digging blades and a plurality of spiral wing, and is a plurality of digging blade interval and straggly set up in the outer wall of drill bit short circuit, and is a plurality of spiral wing equipartition is in the outer wall of outer axle drilling rod, and the digging blade can assist the drill bit to creep into and enlarge drilling, can stir and the supplementary broken stone in the drilling, and supplementary hack and rubble move to spiral wing, and spiral wing can guide hack and rubble to discharge outside the hole.
According to the technical scheme, the concentric double-shaft rotary type earthwork drilling and excavating device for building construction has the advantages that: the drill rod is provided with an outer shaft drill rod and an inner shaft drill rod, the outer shaft drill rod and the inner shaft drill rod can rotate at the same speed or different speeds and can rotate in the same direction or in reverse directions, the rotating speeds of the outer shaft drill rod and the inner shaft drill rod can be respectively adjusted according to the condition that a drill bit breaks earth and stone and the accumulation condition of broken earth and broken stone in a drill hole, and when the rotating speed of the outer shaft drill rod is greater than that of the inner shaft drill rod, a blade on the outer shaft drill rod can quickly assist in discharging broken earth and broken stone in the drill hole, so that broken earth and broken stone accumulation and drill sticking in the; the discharge efficiency of broken soil and broken stone can be improved, and the earth and stone square drilling and digging efficiency can be improved.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
Fig. 3 is a schematic view of a partial structure at a in fig. 1.
Fig. 4 is a schematic view of a partial structure at B in fig. 2.
In the drawings: 1-outer shaft drill rod, 2-inner shaft drill rod, 3-bearing short joint, 31-short joint body, 32-outer ring, 33-ball groove, 34-steel ball, 35-retainer, 36-dust cap, 4-bit short joint, 5-bit, 51-medium flow passage, 52-nozzle, 6-dust-proof gasket, 7-digging blade and 8-spiral blade.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
In the description of the present application, it is to be understood that the terms "inner", "outer", "top", "bottom", and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be construed as limiting the present invention.
As shown in fig. 1 to 4, a concentric dual-shaft rotary type earth and rock drilling device for building construction comprises a drilling tool and a drilling tool driving device, wherein the drilling tool driving device is used for providing torque and bit pressure for the drilling tool and driving the drilling tool to dig;
the drilling tool comprises an outer shaft drill rod 1, an inner shaft drill rod 2, a bearing short circuit 3, a drill bit short circuit 4 and a drill bit 5;
the outer shaft drill rod 1 is a hollow drill rod, the inner shaft drill rod 2 is coaxially arranged inside the outer shaft drill rod 1, the top ends of the outer shaft drill rod 1 and the inner shaft drill rod 2 are respectively in transmission connection with a drilling tool driving device, and the drilling tool driving device is used for driving the outer shaft drill rod 1 and the inner shaft drill rod 2 to rotate at the same speed or at different speeds; it should be noted that the drilling tool driving device is an existing device or can realize the same-speed rotation or different-speed rotation of the outer shaft drill rod 1 and the inner shaft drill rod 2 and the same-direction rotation and reverse-direction rotation of the outer shaft drill rod 1 and the inner shaft drill rod 2 by using the existing device, for example, the drilling tool driving device comprises a rotary table driving device and/or a top driving device for driving the drilling tool to rotate and a hydraulic telescopic device for applying bit pressure and driving the drilling tool to dig in, and the specific structural form and principle of the drilling tool driving device and the drilling tool can refer to a petroleum mechanical drilling machine, which is not described in detail herein;
the bearing short joint 3 is arranged at the bottoms of the outer shaft drill rod 1 and the inner shaft drill rod 2, the bearing short joint 3 is fixedly connected with the inner shaft drill rod 2, the bearing short joint 3 is rotatably connected with the outer shaft drill rod 1, the inner shaft drill rod 2 is rotatably connected with the outer shaft drill rod 1 through the bearing short joint 3, the bearing short joint 3 can enable the inner shaft drill rod 2 and the outer shaft drill rod 1 to be mutually supported, the inner shaft drill rod 2 and the outer shaft drill rod 1 are prevented from being eccentric, and friction between the outer shaft drill rod 1 and the inner shaft drill rod;
two ends of the drill bit short joint 4 are respectively and fixedly connected with the bearing short joint 3 and the drill bit 5, and the inner shaft drill rod 2 can drive the drill bit 5 to rotate;
blades for reaming and discharging debris are arranged on the outer wall of the outer shaft drill rod 1 and the outer wall of the drill bit short joint 4; the cutter wings comprise a plurality of digging blades 7 and a plurality of spiral cutter wings 8, the digging blades 7 are arranged on the outer wall of the drill bit short joint 4 at intervals and staggered, the spiral cutter wings 8 are uniformly distributed on the outer wall of the outer shaft drill rod 1, the digging blades 7 can assist the drill bit 5 to drill and expand a drill hole, can stir and assist in crushing soil and stones in the drill hole, assist in moving soil and gravel to the spiral cutter wings 8, and the spiral cutter wings 8 can guide the soil and gravel to be discharged out of the hole; in the process of excavating on the earth-rock side, the outer shaft drill rod 1 and the inner shaft drill rod 2 can rotate at the same speed and also can rotate at different speeds, and the rotating speed of the outer shaft drill rod 1 can be increased according to the soil breaking and gravel discharging conditions in the drilled holes, so that the soil breaking and gravel in the drilled holes can be discharged more quickly.
In this embodiment, the bearing short circuit 3 includes a short circuit body 31; the outer side wall of the short circuit body 31 is sleeved with an outer ring 32, the outer side wall of the short circuit body 31 and the inner side wall of the outer ring 32 are provided with corresponding ball grooves 33, a plurality of steel balls 34 are arranged in the ball grooves 33, a retainer 35 is arranged between the steel balls 34, the retainer 35 uniformly separates the steel balls 34 from each other, and each steel ball 34 stably rolls in the ball groove 33; the outer ring 32 is fixedly connected with the outer shaft drill rod 1; dust covers 36 are arranged between the top end and the bottom end of the outer ring 32 and the outer side wall of the short circuit body 31, so that dust can be prevented from entering the ball grooves 33 and wearing the steel balls 34; specifically, the outer ring 32 is screwed with the outer shaft drill rod 1; specifically, the bottom end and the top end of the short circuit body 31 are respectively provided with a male buckle (external thread) and a female buckle (internal thread), and the short circuit body 31 is in threaded connection with the drill rod and the drill bit 5; specifically, if necessary, radial lock pins are respectively arranged between the outer ring 32 and the outer shaft drill rod 1, between the short-circuit body 31 and the inner shaft drill rod 2, and between the short-circuit body 31 and the drill bit 5, so as to avoid tripping; it should be noted here that the rolling bearing mainly includes four parts, i.e., an inner ring, an outer ring 32, a rolling body, and a retainer 35, the short connection body 31 is equivalent to the inner ring of the rolling bearing, the short connection body 31 is fixedly connected to the inner shaft drill rod 2, and the outer ring 32 is fixedly connected to the outer shaft drill rod 1, so as to achieve the rotational connection between the inner shaft drill rod 2 and the outer shaft drill rod 1.
In this embodiment, the contact surface between outer axle drilling rod 1 and the short circuit body 31 is equipped with dust gasket 6, and dust gasket 6 does not hinder the rotation between outer axle drilling rod 1 and the short circuit body 31, can be resistant to wearing and tearing, and dust gasket 6 can prevent that rubble hack from getting into bearing short circuit 3.
The working principle of the embodiment is as follows: in the earth and rock drilling process, an inner shaft drill rod 2 and an outer shaft drill rod 1 are respectively driven to rotate by a drilling tool driving device, and the drilling tool driving device provides torque and drilling pressure for a drilling tool and drives the drilling tool to tunnel; high-pressure gas or liquid is injected into the inner drill tool medium flow passage 51 from the top of the inner drill shaft 2; the inner shaft drill rod 2 rotates and drives the drill bit 5 to rotate so as to screw into the broken earth and stone; high-pressure gas or liquid is sprayed out from the nozzles 52 of the drill bit 5 to reduce the temperature of the drill bit 5, so that the abrasion of the drill bit 5 can be effectively reduced, and earth and stone fragments in the drilled hole can be carried out of the drilled hole; the drill bit short joint 4 rotates along with the inner shaft drill rod 2, and the plurality of digging blades 7 on the outer wall of the drill bit short joint 4 can assist the drill bit 5 to drill and enlarge a drilled hole, and can stir and assist in crushing soil and stone, assisting in crushing soil and broken stone in the drilled hole and moving towards the spiral blade 8; the outer shaft drill rod 1 rotates to enable the spiral blades 8 to guide the crushed soil and broken stones to be discharged out of the hole; outer axle drilling rod 1 and interior axle drilling rod 2 can rotate with fast, also can rotate with different speed, according to produce in the drilling with accumulational hack and rubble quantity, when accumulational hack is more with rubble quantity in the drilling, can increase outer axle drilling rod 1's rotational speed to hack and rubble in the discharge drilling that can be faster avoid the rubble hack to pile up the card and bore in the drilling. The drilling and excavating device can respectively adjust the rotating speeds of the outer shaft drill rod 1 and the inner shaft drill rod 2, when the rotating speed of the outer shaft drill rod 1 is greater than that of the inner shaft drill rod 2, the blades on the outer shaft drill rod 1 can quickly assist in discharging broken soil and broken stones in a drill hole, and broken soil accumulation and drill jamming in the drill hole are avoided; the discharge efficiency of broken soil and broken stone can be improved, and the earth and stone square drilling and digging efficiency can be improved.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a concentric biax rotation type earthwork bores and digs device for construction, includes drilling tool and drilling tool drive arrangement, and drilling tool drive arrangement is used for providing moment of torsion and weight of a bit and drives the drilling tool tunnelling for the drilling tool, its characterized in that: the drilling tool comprises an outer shaft drill rod, an inner shaft drill rod, a bearing short joint, a drill bit short joint and a drill bit;
the outer shaft drill rod is a hollow drill rod, the inner shaft drill rod is coaxially arranged inside the outer shaft drill rod, the top ends of the outer shaft drill rod and the inner shaft drill rod are respectively in transmission connection with a drilling tool driving device, and the drilling tool driving device is used for driving the outer shaft drill rod and the inner shaft drill rod to rotate at the same speed or at different speeds;
the bearing short joint is arranged at the bottoms of the outer shaft drill rod and the inner shaft drill rod, the bearing short joint is fixedly connected with the inner shaft drill rod, the bearing short joint is rotatably connected with the outer shaft drill rod, and the inner shaft drill rod is rotatably connected with the outer shaft drill rod through the bearing short joint;
two ends of the drill bit short circuit are respectively and fixedly connected with the bearing short circuit and the drill bit;
and the outer wall of the outer shaft drill rod and the outer wall of the drill bit short circuit are provided with blades for reaming and removing debris.
2. The concentric double-shaft rotary type earth and stone square drilling and excavating device for building construction according to claim 1, characterized in that: the inner shaft drill rod, the bearing short joint, the drill bit short joint and the drill bit are all provided with medium flow channels, and the drill bit is provided with a nozzle.
3. The concentric double-shaft rotary type earth and stone square drilling and excavating device for building construction according to claim 1, characterized in that: the bearing short circuit comprises a short circuit body;
the outer side wall of the short circuit body is sleeved with an outer ring, the outer side wall of the short circuit body and the inner side wall of the outer ring are provided with corresponding ball grooves, a plurality of steel balls are arranged in the ball grooves, and a retainer is arranged between the steel balls; the outer ring is fixedly connected with the outer shaft drill rod.
4. The concentric double-shaft rotary type earth and stone square drilling and excavating device for building construction according to claim 3, characterized in that: and dust covers are arranged between the top end and the bottom end of the outer ring and the outer side wall of the short circuit body.
5. The concentric double-shaft rotary type earth and stone square drilling and excavating device for building construction according to claim 3, characterized in that: and a dustproof gasket is arranged on the contact surface between the outer shaft drill rod and the short-circuit body.
6. The concentric double-shaft rotary type earth and stone square drilling and excavating device for building construction according to claim 1, characterized in that: the blades include a plurality of digging blades and a plurality of helical blades; a plurality of the excavating blades are arranged on the outer wall of the drill bit short circuit at intervals and in a staggered mode, and a plurality of spiral blades are uniformly distributed on the outer wall of the outer shaft drill rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011234934.3A CN112593859A (en) | 2020-11-08 | 2020-11-08 | Concentric double-shaft rotary type earth and stone square drilling and digging device for building construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011234934.3A CN112593859A (en) | 2020-11-08 | 2020-11-08 | Concentric double-shaft rotary type earth and stone square drilling and digging device for building construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112593859A true CN112593859A (en) | 2021-04-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011234934.3A Pending CN112593859A (en) | 2020-11-08 | 2020-11-08 | Concentric double-shaft rotary type earth and stone square drilling and digging device for building construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112593859A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153235A (en) * | 2021-04-29 | 2021-07-23 | 南方海洋科学与工程广东省实验室(湛江) | Underground hydraulic breaking, recovering and separating device for natural gas hydrate |
| CN115744296A (en) * | 2022-10-19 | 2023-03-07 | 江苏宏芯亿泰智能装备有限公司 | Roller way transmission device and glass substrate conveying line |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113153235A (en) * | 2021-04-29 | 2021-07-23 | 南方海洋科学与工程广东省实验室(湛江) | Underground hydraulic breaking, recovering and separating device for natural gas hydrate |
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| CN115744296A (en) * | 2022-10-19 | 2023-03-07 | 江苏宏芯亿泰智能装备有限公司 | Roller way transmission device and glass substrate conveying line |
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