CN111002480A - Automatic drilling equipment of concrete wall location for building engineering - Google Patents
Automatic drilling equipment of concrete wall location for building engineering Download PDFInfo
- Publication number
- CN111002480A CN111002480A CN201911033228.XA CN201911033228A CN111002480A CN 111002480 A CN111002480 A CN 111002480A CN 201911033228 A CN201911033228 A CN 201911033228A CN 111002480 A CN111002480 A CN 111002480A
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- fixedly connected
- rod
- concrete wall
- top end
- sliding
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- 238000005553 drilling Methods 0.000 title claims abstract description 57
- 239000000428 dust Substances 0.000 claims description 18
- 239000004744 fabric Substances 0.000 claims description 15
- 239000004575 stone Substances 0.000 description 20
- 238000010276 construction Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000006978 adaptation Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 244000309464 bull Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
- B28D1/146—Tools therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention belongs to the technical field of building equipment, and particularly relates to a concrete wall positioning automatic drilling device for building engineering. According to the invention, by arranging the fixed disc and the threaded bearing, the drill bit can be ensured to be stably fed when drilling under the condition of keeping the fixed disc and the threaded bearing perpendicular to the wall surface, the convenience and the precision of the drill bit when drilling are improved, and the efficiency is improved.
Description
Technical Field
The invention relates to the technical field of building equipment, in particular to a concrete wall positioning automatic drilling device for building engineering.
Background
In our daily life, the existing wall drilling machine is mostly handheld, when the drilling machine for assembling large-scale drilling needs to be used, a user may need great strength to ensure the precision of a drill bit and control the propulsion of the drill bit when drilling, great difficulty is brought to the use of the drilling machine, and the existing drilling machine with a propulsion device cannot well avoid sundries such as wall plaster stones from flying to the user, so that the safety of the user can be possibly damaged.
Through the retrieval, chinese patent application number is CN201710294450. X's patent, discloses a unit head guide rail structure of rig, including installing the guide rail on the rig support and installing the unit head support that can follow the guide rail and remove on the guide rail, link up and right side open-ended guide slot about having seted up on the unit head support, in right side detachably in the guide slot install the regulating block, the relative guide slot position of regulating block is adjustable, regulating block cooperation guide slot centre gripping guide rail, all be equipped with wear pad between guide slot left side and the guide rail and between regulating block left side and the guide rail. This guide rail structure adopts one side open-ended guide slot cooperation installation, is different from traditional closed guide rail structure, need not the part at special dismouting guide rail both ends during the assembly, and the assembly is simple, also reduces the requirement to assembly place and equipment, and the wearing plate is conveniently adjusted to the regulating block, and after wearing and tearing of wearing plate, frictional force between unit head support and guide rail is adjustable to keep the rig for a long time to creep into the precision, prevent that the unit head from rocking, above-mentioned patent exists following not enoughly: although the device can keep the drilling precision of the drilling machine for a long time and prevent the power head from shaking, the device can not prevent the wall slag and the wall ash from flying when the drill bit of the drilling machine drills, and the stone chips can fly to the face of a user, so that potential safety hazards exist.
Disclosure of Invention
Based on the technical problem that when an existing large-scale drilling machine drills a hole, stone wall dust can fly to the face of a user to cause safety accidents, the invention provides a shower water-saving system.
The invention provides a concrete wall positioning automatic drilling device for constructional engineering, which comprises a base, wherein a propelling mechanism is arranged at the top end of the base and comprises a motor, the output end of the motor is fixedly connected with a bearing, a sliding rail is fixedly connected to the outside of the bearing, a first sliding ring is slidably connected inside the sliding rail, a first spring is fixedly connected between one end of the first sliding ring and the sliding rail, two ends of one side of the first sliding ring are fixedly connected with fixing rods, elastic cloth is fixedly connected between the two fixing rods, two sides of the bottom end of the elastic cloth are respectively provided with a dust exhaust hole, the elastic cloth is fixedly connected with a connecting pipe at the dust exhaust hole, and a second sliding ring is fixedly connected to one side of the fixing.
Preferably, base and outside elevating system looks adaptation, base bottom are rotated through the pivot and are connected with the bull stick, the outside fixedly connected with curved plate of bull stick, the equal fixedly connected with fixed slot in curved plate bottom both sides, fixed slot inside is rotated and is connected with dwang, the outside fixed connection gyro wheel of dwang.
Preferably, the spout has been seted up on the base top, and the base has the slider in spout department sliding connection, base top one side fixedly connected with bracing piece, bracing piece top fixedly connected with threaded rod, the outside cover of threaded rod is equipped with threaded bearing, and threaded bearing inner ring inner wall is carved and is equipped with the screw thread, threaded bearing and threaded rod looks adaptation.
Preferably, the top end of the threaded bearing is fixedly connected with the motor, a gear is fixedly connected to the outside of an output shaft of the motor, a hollow pipe is fixedly connected to one side of an inner ring of the threaded bearing, a toothed ring is arranged on the outside of the hollow pipe, and the toothed ring is matched with the gear.
Preferably, the both ends of second sliding ring one side all fixedly connected with fixed disk, the fixed disk bottom is equipped with curved rubber pad, circular through-hole has been seted up to fixed disk top one side, and the fixed disk is at circular through-hole department fixed connection piston tube.
Preferably, the top end of the piston tube is provided with a round small hole, the piston tube is connected with a piston rod in the round small hole in a sliding manner, the top end of the piston rod is fixedly connected with a cross rod, and the bottom end of the piston rod is fixedly connected with a first rubber disc.
Preferably, a rectangular small hole is formed in one side of the top end of the piston tube, a rectangular strip is connected to the piston tube in a sliding mode at the rectangular small hole, a clamping plate is fixedly connected to one side of the rectangular strip, and a second spring is fixedly connected between the clamping plate and the piston tube.
Preferably, the outside difference fixedly connected with second rubber disk and third rubber disk in piston rod bottom, the first kelly of fixedly connected with between first rubber disk and the second rubber disk both sides, the fixedly connected with second kelly between second rubber disk and the third rubber disk both sides.
The beneficial effects of the invention are as follows:
1. through the arrangement of the elastic cloth, when the drill bit drills a hole in the wall surface, splashed wall dust and stones enter the space between the first sliding ring and the second sliding ring, meanwhile, the elastic cloth relieves the impact force of the stones, collects the wall dust and the stones into the dust exhaust holes, and finally exhausts the dust through the connecting pipe, so that the stones are prevented from rebounding to the drill rod and damaging the drill rod;
2. by arranging the curved plate, when the ground is not completely horizontal during drilling, the roller contacts the ground to drive the curved plate to deflect, and the upper motor still keeps vertical to the wall surface, so that the problem of inclination of the drilled hole due to insufficient horizontal degree of the ground is avoided;
3. through the arrangement of the sliding block, the gear is driven to rotate by the motor, the gear drives the hollow pipe to rotate, the hollow pipe drives the threaded bearing to rotate, and meanwhile, the threaded bearing is matched with the threaded rod to drive the motor to reciprocate on the threaded rod, so that the stable feeding is ensured when the motor drives the drill bit to drill, and the situation that the drilling quality is low due to insufficient strength in hand holding is avoided;
4. by arranging the curved rubber pad, the air pressure in the fixed disc is reduced by pressing the fixed disc and pulling the piston rod, the air disc and the curved rubber pad are pressed on the wall surface by external air pressure, the fixed device is always vertical to the wall surface, and the precision of the drill bit during drilling is improved;
5. through setting up first kelly, when the pulling piston rod, frictional force has between first rubber disk and the piston pipe, first kelly before first rubber disk and the second rubber disk simultaneously to and the second kelly between second rubber disk and the third rubber disk, strengthened holistic elasticity limit, prevented first rubber disk to take place deformation, avoided first rubber disk because frictional force leads to the edge bending, so that the condition of gas leakage takes place.
According to the invention, by arranging the fixed disc and the threaded bearing, the drill bit can be ensured to be stably fed when drilling under the condition of keeping the fixed disc and the threaded bearing perpendicular to the wall surface, the convenience and the precision of the drill bit when drilling are improved, and the efficiency is improved.
Drawings
FIG. 1 is a front sectional view of an automatic drilling device for positioning concrete wall surfaces for construction engineering in accordance with example 1;
fig. 2 is a front view of a first slide ring of the concrete wall positioning automatic drilling device for construction engineering in embodiment 1;
FIG. 3 is a front view of a fixing plate of the automatic drilling device for positioning concrete wall surfaces in construction engineering in accordance with embodiment 1;
FIG. 4 is a front view of a piston tube of the automatic drilling device for positioning concrete wall surface in construction engineering in section according to example 1;
fig. 5 is a front view of a first clamping rod of the concrete wall positioning automatic drilling device for construction engineering provided in embodiment 2.
In the figure: the device comprises a base 1, a rotating rod 2, a curved surface plate 3, a fixing groove 4, a roller 5, a rotating rod 6, a supporting rod 7, a sliding block 8, a threaded rod 9, a threaded bearing 10, a hollow tube 11, a toothed ring 12, a motor 13, a gear 14, a bearing 15, a sliding rail 16, a first spring 17, a first sliding ring 18, a fixing plate 19, elastic cloth 20, a fixing rod 21, a second sliding ring 22, a dust exhaust hole 23, a connecting tube 24, a piston tube 25, a piston rod 26, a cross rod 27, a curved rubber pad 28, a rectangular strip 29, a clamping plate 30, a second spring 31, a first rubber disc 32, a second rubber disc 33, a first clamping rod 34, a third rubber disc 35 and a second clamping rod 36.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
Referring to fig. 1-4, an automatic drilling device for concrete wall positioning for building engineering comprises a base 1, wherein a propelling mechanism is arranged at the top end of the base 1, the propelling mechanism comprises a motor 13, a bearing 15 is welded at the output end of the motor 13, a sliding rail 16 is welded outside the bearing 15, a first sliding ring 18 is slidably connected inside the sliding rail 16, a first spring 17 is welded between one end of the first sliding ring 18 and the sliding rail 16, fixing rods 21 are welded at both ends of one side of the first sliding ring 18, elastic cloth 20 is welded between the two fixing rods 21, dust exhaust holes 23 are formed in both sides of the bottom end of the elastic cloth 20, a connecting pipe 24 is welded at the dust exhaust holes 23 of the elastic cloth 20, a second sliding ring 22 is welded at one side of the fixing rods 21, when a drill bit drills a wall, splashed wall dust and stones enter between the first sliding ring 18 and the second sliding ring 22, meanwhile, the elastic cloth 20 relieves the impact force of the stones, collects wall dust and the stones into the dust exhaust holes 23, and finally exhausts the wall dust and the stones through the connecting pipe 24, so that the stones are prevented from rebounding to the drill rod and damaging the drill rod.
In the invention, the base 1 is matched with an external lifting mechanism, the bottom end of the base 1 is rotatably connected with the rotating rod 2 through the rotating shaft, the curved plate 3 is welded outside the rotating rod 2, the two sides of the bottom end of the curved plate 3 are both welded with the fixing grooves 4, the rotating rod 6 is rotatably connected inside the fixing grooves 4, the rollers 5 are welded outside the rotating rod 6, when the ground is not completely horizontal during drilling, the rollers 5 contact the ground to drive the curved plate 3 to deflect, and meanwhile, the upper motor 13 is still vertical to the wall surface, so that the problem of drilling inclination caused by insufficient ground levelness is avoided.
Wherein, the top end of the base 1 is provided with a sliding groove, the base 1 is connected with a sliding block 8 at the sliding groove in a sliding way, one side of the top end of the base 1 is welded with a support rod 7, the top end of the support rod 7 is welded with a threaded rod 9, the outer part of the threaded rod 9 is sleeved with a threaded bearing 10, the inner wall of the inner ring of the threaded bearing 10 is carved with threads, the threaded bearing 10 is matched with the threaded rod 9, the top end of the threaded bearing 10 is welded with a motor 13, the outer part of the output shaft of the motor 13 is welded with a gear 14, one side of the inner ring of the threaded bearing 10 is welded with a hollow tube 11, the outer part of the hollow tube 11 is provided with a toothed ring 12, the toothed ring 12 is matched with the gear 14, the gear 14 drives the hollow tube 11 to rotate through, the motor 13 is guaranteed to drive the drill bit to keep stable feeding when drilling, and the situation that the drilling quality is not high due to insufficient strength in hand holding is avoided.
Wherein, both ends of one side of the second sliding ring 22 are welded with a fixed disk 19, the bottom end of the fixed disk 19 is provided with a curved rubber pad 28, one side of the top end of the fixed disk 19 is provided with a circular through hole, the fixed disk 19 is welded with a piston tube 25 at the circular through hole, the top end of the piston tube 25 is provided with a circular small hole, the piston tube 25 is connected with a piston rod 26 at the circular small hole in a sliding way, the top end of the piston rod 26 is welded with a cross rod 27, the bottom end of the piston rod 26 is welded with a first rubber disk 32, one side of the top end of the piston tube 25 is provided with a rectangular small hole, the piston tube 25 is connected with a rectangular strip 29 at the rectangular small hole in a sliding way, one side of the rectangular strip 29 is welded with a clamping plate 30, a second spring 31 is welded between the clamping plate 30 and, the device is fixed to be always vertical to the wall surface, and the precision of the drill bit during drilling is improved.
During the use, when the drill bit was operated the wall drilling, the wall ash and the stone that splash out got into between first slip ring 18 and the second slip ring 22, and elastic cloth 20 is alleviated the impact force of stone simultaneously to in collecting dust exhaust hole 23 with wall ash and stone, discharge through connecting pipe 24 at last, avoid on the stone rebounds the drilling rod, cause the damage to the drilling rod.
When drilling, when ground is not complete level, gyro wheel 5 contact ground, drives curved plate 3 and takes place to deflect, and upper portion motor 13 still keeps perpendicular with the wall simultaneously, avoids because ground levelness is not enough, leads to the problem of drilling slope to take place.
Drive gear 14 through motor 13 and rotate, gear 14 drives hollow tube 11 and rotates, and hollow tube 11 drives screw bearing 10 and rotates, and screw bearing 10 and threaded rod 9 cooperation drive motor 13 and carry out reciprocating motion on threaded rod 9 simultaneously, have guaranteed that motor 13 drives the drill bit when drilling, and the steady feed that keeps has avoided handheld because the not high condition of drilling quality that the strength leads to inadequately takes place.
By pressing the fixed disc 19 and pulling the piston rod 26, the air pressure in the fixed disc 19 is reduced, the air disc 19 and the curved rubber pad 28 are pressed on the wall surface by the external air pressure, the fixed device is always vertical to the wall surface, and the precision of the drill bit during drilling is improved.
Example 2
Referring to fig. 5, in order to avoid the situation that the edge of the first rubber disk bends and deforms due to friction and air pressure when the first rubber disk is pulled, the second rubber disk 33 and the third rubber disk 35 are welded to the outside of the bottom end of the piston rod 26, respectively, a first clamping rod 34 is welded between the two sides of the first rubber disk 32 and the second rubber disk 33, a second clamping rod 36 is welded between the two sides of the second rubber disk 33 and the third rubber disk 35, when the piston rod 26 is pulled, friction exists between the first rubber disk 32 and the piston tube 25, and meanwhile, the first clamping rod 34 in front of the first rubber disk 32 and the second rubber disk 33, and the second clamping rod 36 between the second rubber disk 33 and the third rubber disk 35 strengthen the overall elastic limit and prevent the first rubber disk 32 from deforming, the situation that the first rubber disk 32 bends at the edge due to friction force so as to cause air leakage is avoided.
During the use, when the drill bit was operated the wall drilling, the wall ash and the stone that splash out got into between first slip ring 18 and the second slip ring 22, and elastic cloth 20 is alleviated the impact force of stone simultaneously to in collecting dust exhaust hole 23 with wall ash and stone, discharge through connecting pipe 24 at last, avoid on the stone rebounds the drilling rod, cause the damage to the drilling rod.
When drilling, when ground is not complete level, gyro wheel 5 contact ground, drives curved plate 3 and takes place to deflect, and upper portion motor 13 still keeps perpendicular with the wall simultaneously, avoids because ground levelness is not enough, leads to the problem of drilling slope to take place.
Drive gear 14 through motor 13 and rotate, gear 14 drives hollow tube 11 and rotates, and hollow tube 11 drives screw bearing 10 and rotates, and screw bearing 10 and threaded rod 9 cooperation drive motor 13 and carry out reciprocating motion on threaded rod 9 simultaneously, have guaranteed that motor 13 drives the drill bit when drilling, and the steady feed that keeps has avoided handheld because the not high condition of drilling quality that the strength leads to inadequately takes place.
By pressing the fixed disc 19 and pulling the piston rod 26, the air pressure in the fixed disc 19 is reduced, the air disc 19 and the curved rubber pad 28 are pressed on the wall surface by the external air pressure, the fixed device is always vertical to the wall surface, and the precision of the drill bit during drilling is improved.
When the piston rod 26 is pulled, friction force exists between the first rubber disc 32 and the piston tube 25, meanwhile, the first clamping rod 34 in front of the first rubber disc 32 and the second rubber disc 33 and the second clamping rod 36 between the second rubber disc 33 and the third rubber disc 35 strengthen the integral elastic limit, prevent the first rubber disc 32 from deforming, and avoid the situation that the first rubber disc 32 is subjected to edge bending due to the friction force, so that air leakage occurs.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. An automatic drilling device for concrete wall positioning for constructional engineering comprises a base (1), it is characterized in that the top end of the base (1) is provided with a propelling mechanism, the propelling mechanism comprises a motor (13), the output end of the motor (13) is fixedly connected with a bearing (15), a sliding rail (16) is fixedly connected to the outer part of the bearing (15), a first sliding ring (18) is slidably connected to the inner part of the sliding rail (16), a first spring (17) is fixedly connected between one end of the first sliding ring (18) and the sliding rail (16), fixing rods (21) are fixedly connected to both ends of one side of the first sliding ring (18), an elastic cloth (20) is fixedly connected between the two fixing rods (21), dust exhaust holes (23) are respectively formed in both sides of the bottom end of the elastic cloth (20), a connecting pipe (24) is fixedly connected to the elastic cloth (20) at the dust exhaust holes (23), one side of the fixed rod (21) is fixedly connected with a second sliding ring (22).
2. The automatic drilling device for positioning the concrete wall for the constructional engineering according to claim 1, wherein the base (1) is adapted to an external lifting mechanism, the bottom end of the base (1) is rotatably connected with the rotating rod (2) through a rotating shaft, the rotating rod (2) is fixedly connected with the curved plate (3) outside, both sides of the bottom end of the curved plate (3) are fixedly connected with the fixing grooves (4), the rotating rod (6) is rotatably connected inside the fixing grooves (4), and the rotating rod (6) is fixedly connected with the rollers (5) outside.
3. The automatic drilling device for positioning the concrete wall for the constructional engineering as claimed in claim 2, wherein a sliding groove is formed in the top end of the base (1), the sliding block (8) is slidably connected to the base (1) at the sliding groove, a supporting rod (7) is fixedly connected to one side of the top end of the base (1), a threaded rod (9) is fixedly connected to the top end of the supporting rod (7), a threaded bearing (10) is sleeved outside the threaded rod (9), threads are carved on the inner wall of the inner ring of the threaded bearing (10), and the threaded bearing (10) is matched with the threaded rod (9).
4. The automatic drilling device for positioning the concrete wall surface for the constructional engineering as claimed in claim 3, characterized in that the top end of the threaded bearing (10) is fixedly connected with the motor (13), the gear (14) is fixedly connected to the outside of the output shaft of the motor (13), the hollow tube (11) is fixedly connected to one side of the inner ring of the threaded bearing (10), the toothed ring (12) is arranged on the outside of the hollow tube (11), and the toothed ring (12) is matched with the gear (14).
5. The automatic drilling device for positioning the concrete wall for the constructional engineering as claimed in claim 4, wherein both ends of one side of the second sliding ring (22) are fixedly connected with a fixed disc (19), a curved rubber pad (28) is arranged at the bottom end of the fixed disc (19), a circular through hole is formed at one side of the top end of the fixed disc (19), and the fixed disc (19) is fixedly connected with the piston tube (25) at the circular through hole.
6. The automatic concrete wall positioning and drilling device for the building engineering according to claim 5, wherein a round small hole is formed in the top end of the piston tube (25), a piston rod (26) is connected to the piston tube (25) in a sliding mode in the round small hole, a cross rod (27) is fixedly connected to the top end of the piston rod (26), and a first rubber disc (32) is fixedly connected to the bottom end of the piston rod (26).
7. The automatic drilling device for positioning the concrete wall for the constructional engineering as claimed in claim 6, wherein one side of the top end of the piston tube (25) is provided with a rectangular small hole, the piston tube (25) is slidably connected with a rectangular bar (29) at the rectangular small hole, one side of the rectangular bar (29) is fixedly connected with a clamping plate (30), and a second spring (31) is fixedly connected between the clamping plate (30) and the piston tube (25).
8. The automatic drilling device for positioning the concrete wall for the constructional engineering as claimed in claim 6, wherein a second rubber disc (33) and a third rubber disc (35) are fixedly connected to the outer portion of the bottom end of the piston rod (26), respectively, a first clamping rod (34) is fixedly connected between the first rubber disc (32) and two sides of the second rubber disc (33), and a second clamping rod (36) is fixedly connected between the second rubber disc (33) and two sides of the third rubber disc (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911033228.XA CN111002480A (en) | 2019-10-28 | 2019-10-28 | Automatic drilling equipment of concrete wall location for building engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911033228.XA CN111002480A (en) | 2019-10-28 | 2019-10-28 | Automatic drilling equipment of concrete wall location for building engineering |
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| Publication Number | Publication Date |
|---|---|
| CN111002480A true CN111002480A (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911033228.XA Pending CN111002480A (en) | 2019-10-28 | 2019-10-28 | Automatic drilling equipment of concrete wall location for building engineering |
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| Country | Link |
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| CN (1) | CN111002480A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112265155A (en) * | 2020-10-10 | 2021-01-26 | 徐树强 | Wall surface hole opening device capable of accurately positioning and fixing angle |
| CN112428444A (en) * | 2020-11-03 | 2021-03-02 | 湖南迈辉环保材料有限公司 | Positioning and drilling device for constructional engineering |
| CN115229991A (en) * | 2022-07-20 | 2022-10-25 | 山东锦地建筑工程有限公司 | Building construction equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112265155A (en) * | 2020-10-10 | 2021-01-26 | 徐树强 | Wall surface hole opening device capable of accurately positioning and fixing angle |
| CN112428444A (en) * | 2020-11-03 | 2021-03-02 | 湖南迈辉环保材料有限公司 | Positioning and drilling device for constructional engineering |
| CN115229991A (en) * | 2022-07-20 | 2022-10-25 | 山东锦地建筑工程有限公司 | Building construction equipment |
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