CN110171068B - Top beam plate drilling device for building - Google Patents

Top beam plate drilling device for building Download PDF

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Publication number
CN110171068B
CN110171068B CN201910467198.7A CN201910467198A CN110171068B CN 110171068 B CN110171068 B CN 110171068B CN 201910467198 A CN201910467198 A CN 201910467198A CN 110171068 B CN110171068 B CN 110171068B
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CN
China
Prior art keywords
drilling
rod
rotary
shell
roof
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Active
Application number
CN201910467198.7A
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Chinese (zh)
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CN110171068A (en
Inventor
王和平
丁小建
宗青
虞小芳
景俊进
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Suzhong Construction Group Co Ltd
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Jiangsu Suzhong Construction Group Co Ltd
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Priority to CN201910467198.7A priority Critical patent/CN110171068B/en
Publication of CN110171068A publication Critical patent/CN110171068A/en
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Publication of CN110171068B publication Critical patent/CN110171068B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28DWORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/14Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28DWORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/14Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
    • B28D1/146Tools therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28DWORKING STONE OR STONE-LIKE MATERIALS
    • B28D7/00Accessories specially adapted for use with machines or devices of the preceding groups

Abstract

The invention relates to a roof beam plate drilling device for a building, which effectively solves the problems of inconvenience in roof plate drilling, low efficiency and poor precision; the technical scheme includes that the drilling device comprises a vertical rod, a horizontal rotary table is mounted at the upper end of the vertical rod, the rotary table is provided with a drilling device, the drilling device can move in the radial direction, an indexing positioning device is mounted below the rotary table, and indexing positioning is performed until the rotary table and the drilling device rotate to a fixed angle each time; the invention can be suitable for drilling requirements of various distribution diameters and various quantities, has strong adaptability, and has simple drilling operation and high drilling precision.

Description

Top beam plate drilling device for building
Technical Field
The invention relates to the field of building construction, in particular to a top beam plate drilling device for a building.
Background
The ceiling engineering is one of the most common decoration structures in interior decoration, and a ceiling or other decorations need to be installed on a roof through holes during ceiling hanging; at present, when punching operation is carried out on a roof, a scaffold or a herringbone ladder is firstly installed, constructors ascend to carry out punching operation, the long-time work of lifting the head and lifting the wall is needed during punching, the arms and the neck are easy to ache, the constructors are very difficult to punch in a comfortable and stable posture, the punching position precision and quality are difficult to guarantee, at least one person is needed to be responsible for auxiliary work such as delivery tools and the like during punching, the scaffold or the herringbone ladder is inconvenient to move, the falling danger exists, and in addition, the scaffold and the herringbone ladder are large in size and inconvenient to move; although some top plate auxiliary drilling devices exist at present, only one single hole can be drilled generally, and a plurality of holes which are uniformly distributed on the circumference are needed for installing a lamp holder for a large suspended ceiling; in addition, these devices generally use a power source such as a motor to drive the drill bit to feed, and during drilling, the operator needs to adjust the advance and retreat of the drill bit and the feed speed according to the feedback of the resistance of the drill bit so as to prevent the drill bit from breaking up, and the feedback is cut off by driving the drill bit by using the power source such as the motor.
Disclosure of Invention
Aiming at the situation, the invention provides a roof beam plate drilling device for buildings to overcome the defects of the prior art, and effectively solves the problems of inconvenience in roof plate drilling, low efficiency and poor precision.
The top beam plate drilling device for the building comprises a vertical rod, wherein a horizontal rotary table is installed at the upper end of the vertical rod, a vertical cylindrical first shell is arranged on the upper surface of the rotary table, a drilling machine is installed in the first shell, a tension spring is installed between the bottom of the drilling machine and the bottom of the first shell, a vertical piston cavity and a plurality of side holes are formed in the bottom of the first shell, the circumferences of the side holes are uniformly distributed outside the piston cavity, the side holes are vertically arranged, the bottoms of the side holes are communicated with the bottom of the piston cavity, a piston is installed in the piston cavity, hydraulic oil is installed below the piston, the lower end of the piston is connected with a piston rod, the lower end of the piston cylinder extends below the rotary table and is connected with a pull rope, a plunger is installed in each side hole, and the upper end of the plunger extends; the vertical rod is provided with an annular dividing disc positioned below the rotary disc, a plurality of radial grooves are uniformly distributed on the circumference of the upper surface of the dividing disc, the lower surface of the rotary disc is provided with a cylindrical second shell, an electromagnet and a magnetic block positioned below the electromagnet are arranged in the second shell, a pressure spring is arranged between the electromagnet and the magnetic block, the magnetic block can move up and down, the electromagnet is connected with a power supply and an electromagnet switch, a first conductor block is fixed on the electromagnet, a second conductor block is fixed on the magnetic block, the second conductor block is cylindrical, the lower end of the second conductor block extends out of the second shell and is in contact with the dividing disc, and the lower end of the second conductor block can be clamped into the radial grooves; a motor capable of driving the turntable to rotate is arranged below the turntable, and two poles of the motor are respectively communicated with the first conductor block and the second conductor block and are connected with a power supply.
The invention can be suitable for drilling requirements of various distribution diameters and various quantities, has strong adaptability, and has simple drilling operation and high drilling precision.
Drawings
FIG. 1 is a front view of the present invention.
Fig. 2 is a front sectional view of the invention in use.
Fig. 3 is an enlarged view of the upper half of fig. 2.
Fig. 4 is an enlarged view of the position a in fig. 3.
Fig. 5 is an enlarged view of the position B in fig. 3.
Fig. 6 is an enlarged view of the position B when the first and second conductor blocks are in contact.
Fig. 7 is a top view of the indexing disk.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.
As shown in fig. 1 to 7, the hydraulic drilling machine comprises a vertical rod 1, a horizontal rotary table 2 is mounted at the upper end of the vertical rod 1, a vertical cylindrical first shell 3 is arranged on the upper surface of the rotary table 2, a drilling machine 4 is mounted in the first shell 3, a tension spring 5 is mounted between the bottom of the drilling machine 4 and the bottom of the first shell 3, a vertical piston cavity 6 and a plurality of side holes 7 are formed in the bottom of the first shell 3, the circumferences of the side holes are uniformly distributed outside the piston cavity 6, the side holes 7 are vertically arranged, the bottoms of the side holes are communicated with the bottom of the piston cavity 6, a piston 8 is mounted in the piston cavity 6, hydraulic oil is mounted below the piston 8, the lower end of the piston 8 is connected with a piston rod 9, the lower end of the piston rod 9 extends to the lower side of the rotary table 2 and is connected with a pull rope 10, a plunger 11 is mounted in each side hole 7, and the upper; an annular indexing disc 12 positioned below the rotary disc 2 is mounted on the vertical rod 1, a plurality of radial grooves 13 are uniformly distributed on the circumference of the upper surface of the indexing disc 12, a cylindrical second shell 14 is mounted on the lower surface of the rotary disc 2, an electromagnet 15 and a magnetic block 16 positioned below the electromagnet 15 are mounted in the second shell 14, a pressure spring 17 is mounted between the electromagnet 15 and the magnetic block 16, the magnetic block 16 can move up and down, the electromagnet 15 is connected with a power supply and an electromagnet switch 18, a first conductor block 19 is fixed on the electromagnet 15, a second conductor block 20 is fixed on the magnetic block 16, the second conductor block 20 is columnar, the lower end of the second conductor block 20 extends out of the second shell 14 to be contacted with the dial, and the lower end of the second conductor block 20 can be clamped into the radial grooves 13; a motor 21 capable of driving the turntable 2 to rotate is arranged below the turntable, and two poles of the motor 21 are respectively communicated with the first conductor block 19 and the second conductor block 20 and are connected with a power supply.
In order to prevent the wire of the motor 21 from being wound on the vertical rod 1 when the rotary disk 2 rotates, the vertical rod 1 is provided with two metal discs 22 at intervals from top to bottom, the two metal discs 22 are respectively communicated with two poles of the motor 21, the outer wall of the second shell 14 is provided with two electric brushes 23 at intervals from top to bottom, the two electric brushes 23 are respectively communicated with the two conductor blocks, and the two electric brushes 23 are respectively contacted with the outer edges of the two metal discs 22.
A first gear 24 is coaxially and fixedly connected with the lower part of the rotating disc 2, a second gear 25 is meshed with the outer side of the first gear 24, and the second gear 25 is driven by the motor 21.
The rotary table 2 is provided with a radial threaded rod 26 and a nut 27 matched with the threaded rod 26, the nut 27 is fixed on the rotary table 2, the outer end of the threaded rod 26 is fixedly connected with the first shell 3, the first shell 3 can be pushed to move radially by rotating the threaded rod 26, and the rotary table 2 is provided with a radial sliding groove 28 for the piston rod 9 to move left and right.
The indexing disc 12 is provided with a plurality of indexing discs, the number of the radial grooves 13 on each indexing disc 12 is different, and the indexing discs 12 on the vertical rod 1 can be replaced.
Each index plate 12 below all be connected with a sleeve 29, index plate 12 and sleeve 29 all divide into two semicircle parts along the diameter, all install a radial screw 30 on the sleeve 29 lateral wall of every part, it has a radial screw through-hole 31 to open on the montant 1, the two parts of index plate 12 can lock and form complete index plate 12 on montant 1, then the screw 30 of both sides is screwed into in the screw through-hole 31 and is fixed.
For preventing the uneven slope that takes place of carousel 2 atress when 4 driling of rig, carousel 2 on install a vertical support column 32, support column 32 and first casing 3 are symmetrical about carousel 2 centre of a circle central point, a ball 33 is installed to the upper end of support column 32, ball 33 can reduce the resistance on support column 32 and roof when carousel 2 rotates.
The vertical rod 1 comprises an inner rod 34 and an outer rod 35, the inner rod 34 is coaxially sleeved in the outer rod 35 and can slide up and down, and a fastening screw 36 is arranged at the upper end of the outer rod 35.
The side wall of the upper end of the inner rod 34 is hinged with a plurality of inclined supporting rods 37 which are uniformly distributed on the circumference, the lower end of each inclined supporting rod 37 is hinged with a supporting plate 38, and the lower surface of each supporting plate 38 is provided with anti-skidding teeth.
The circle center of the upper surface of the turntable 2 is provided with a laser lamp 39 which irradiates vertically upwards, and the laser lamp 39 is used for positioning.
When the indexing disc drill is used, the position of the drill 4 is adjusted according to the diameter of a distribution circle of a plurality of holes uniformly distributed on the circumference to be drilled, the specific method is that the first shell 3 is pushed to move by screwing the threaded rod 26, so that the distance between the drill bit of the drill 4 and the circle center of the rotary disc 2 is equal to the radius of the distribution circle, then the indexing discs 12 with the same number of radial grooves 13 are selected according to the number of drilled holes and are arranged on the vertical rod 1, and the indexing discs 12 with the radial grooves 13 of 3, 4 and 5 specifications can be used as the number of the drilled holes is almost 3 to 5; finally, the device is moved to the position of a top beam plate needing drilling, the center position is located through the laser lamp 39, the height of the vertical rod 1 is adjusted, the drill bit and the ball 33 at the upper end of the support column 32 are in contact with the top beam plate, the inclined support rods 37 are unfolded after the positioning is finished, the stability of the vertical rod 1 is kept, and the lower ends of the inclined support rods 37 can be prevented from sliding while the support area of the support plates 38 at the lower ends of the inclined support rods 37 is increased.
The lower end of the pull rope 10, the control switch of the drilling machine 4 and the electromagnet switch 18 of the device are all located at the lower position of the vertical rod 1, and the lower end of the pull rope 10 is connected with a pull ring, so that the device is convenient for workers to operate.
After the installation and positioning are finished, the drilling operation can be started, when the initial position is reached, the lower end of the second conductor block 20 is clamped into one of the radial grooves 13, the first conductor block 19 is separated from the second conductor block 20, and the motor 21 is not started; at the moment, a control switch of the drilling machine 4 is started, and the drilling machine 4 can be prevented from rotating in the first shell 3 through the structures of the guide block and the guide groove; after the drilling machine 4 is started, the pull rope 10 is pulled downwards through the pull ring, the pull rope 10 drives the piston 8 to move downwards through the piston rod 9, the piston 8 can extrude hydraulic oil in the piston cavity 6 into the side holes 7 to push the plungers 11 to move upwards, the plungers 11 push the drilling machine 4 to move upwards for drilling, the feedback of the drilling machine 4 can be obtained in real time through the resistance of the pull rope 10, so that the advancing and retreating speed and the feeding speed of the drill bit are controlled, after the drilling is finished, the pull rope 10 is loosened, the drilling machine 4 descends under the action of the tension spring 5, and the drill bit retreats out of the hole; the support column 32 can support the other side of the turntable 2 during drilling, preventing the reaction force of drilling from tilting the turntable 2.
After a hole is drilled, the electromagnet switch 18 is pressed to close a circuit of the electromagnet 15, the electromagnet 15 is electrified, the electromagnet 15 adsorbs the magnetic block 16 and moves upwards under the action of the pressure spring 17, the magnetic block 16 drives the second conductor block 20 to move upwards until the second conductor block 20 is contacted with the first conductor block 19, the lower end of the second conductor block 20 exits out of the radial groove 13, the circuit of the motor 21 is connected, the motor 21 is started to drive the second gear 25 to rotate, the second gear 25 drives the rotary table 2 to rotate through the first gear 24, and the rotary table 2 drives the first shell 3, the second shell 14 and the support column 32 to rotate; after the second conductor block 20 is dislocated with the radial groove 13, the electromagnet switch 18 is released, the electromagnet 15 is powered off at the moment, but because the second conductor block 20 is in contact with the upper surface of the dividing disc 12, the second conductor block 20 cannot move downwards and is still connected with the first conductor block 19, the motor 21 continuously rotates until the second conductor block 20 rotates to be opposite to the next radial groove 13, the magnetic block 16 and the second conductor block 20 move downwards under the action of the pressure spring 17, the lower end of the second conductor block 20 is clamped into the radial groove 13, meanwhile, the second conductor block 20 is separated from the first conductor block 19, the motor 21 is powered off and stops rotating, the rotary disc 2 is positioned at the position, and then the pull rope 10 is pulled downwards again to drill.
After the drilling operation of the group is finished according to the steps, the device is moved to the next drilling position to perform the next group of drilling work.
The top beam plate drilling device can perform the top beam plate drilling work under the condition of no ascending, reduces the labor amount of workers, improves the safety, can conveniently, quickly and accurately perform position switching and positioning through the matching of the dividing disc 12 and the rotary disc 2, can complete the drilling work of all holes by one-time positioning, does not need to manually maintain the stability of a drill bit, has small error and high drilling precision, can be suitable for the drilling requirements of various distribution diameters and various quantities, and has strong adaptability and simple drilling operation; in addition, the feedback of the drilling machine 4 can be obtained in real time through the resistance change of the pull rope 10, so that the advance and retreat and the feed speed of the drill bit are determined, the drill bit is prevented from being broken, and the hand feeling is close to that of directly holding the drilling machine 4 by hand to drill; the invention is more convenient for batch decoration with the same specification, such as office building decoration, house decoration by developers, unified decoration before delivery of shops, and the like, and can be repeatedly used after the position of the drilling machine 4 is adjusted and the dividing plate 12 is installed.

Claims (10)

1. A beam ejection plate drilling device for buildings comprises a vertical rod (1) and is characterized in that a horizontal rotary table (2) is installed at the upper end of the vertical rod (1), a vertical cylindrical first shell (3) is arranged on the upper surface of the rotary table (2), a drilling machine (4) is installed in the first shell (3), a tension spring (5) is installed between the bottom of the drilling machine (4) and the bottom of the first shell (3), a vertical piston cavity (6) and a plurality of side holes (7) which are uniformly distributed outside the piston cavity (6) in the circumferential direction are formed in the bottom of the first shell (3), the plurality of side holes (7) are vertically arranged, the bottoms of the side holes are communicated with the bottom of the piston cavity (6), a piston (8) is installed in the piston cavity (6), hydraulic oil is installed below the piston (8), a piston rod (9) is connected to the lower end of the piston (8), the lower end of the piston rod (9) extends to the lower portion of the rotary table (2, a plunger (11) is arranged in each side hole (7), and the upper end of the plunger (11) extends into the first shell (3) to be contacted with the bottom of the drilling machine (4); an annular indexing disc (12) located below a rotary disc (2) is mounted on a vertical rod (1), a plurality of radial grooves (13) are uniformly distributed on the circumference of the upper surface of the indexing disc (12), a cylindrical second shell (14) is mounted on the lower surface of the rotary disc (2), an electromagnet (15) and a magnetic block (16) located below the electromagnet (15) are mounted in the second shell (14), a pressure spring (17) is mounted between the electromagnet (15) and the magnetic block (16), the magnetic block (16) can move up and down, the electromagnet (15) is connected with a power supply and an electromagnet switch (18), a first conductor block (19) is fixed on the electromagnet (15), a second conductor block (20) is fixed on the magnetic block (16), the second conductor block (20) is columnar, the lower end of the second conductor block extends out of the second shell (14) and is in contact with the indexing disc, and the lower end of the second conductor block (20) can be clamped into the radial grooves (13); a motor (21) capable of driving the turntable (2) to rotate is arranged below the turntable, and two poles of the motor (21) are respectively communicated with the first conductor block (19) and the second conductor block (20) and are connected with a power supply.
2. The roof beam plate drilling device for the building as claimed in claim 1, wherein two metal discs (22) are installed on the vertical rod (1) at intervals from top to bottom, the two metal discs (22) are respectively communicated with two poles of the motor (21), two electric brushes (23) are installed on the outer wall of the second shell (14) at intervals from top to bottom, the two electric brushes (23) are respectively communicated with the two conductor blocks, and the two electric brushes (23) are respectively contacted with the outer edges of the two metal discs (22).
3. The roof beam plate drilling device for the building as recited in claim 1, characterized in that a first gear (24) is coaxially and fixedly connected below the rotary table (2), a second gear (25) is meshed outside the first gear (24), and the second gear (25) is driven by a motor (21).
4. The roof beam plate drilling device for the building as claimed in claim 1, wherein a radial threaded rod (26) and a nut (27) matched with the threaded rod (26) are installed on the rotary table (2), the nut (27) is fixed on the rotary table (2), the outer end of the threaded rod (26) is fixedly connected with the first shell (3), the first shell (3) can be pushed to move radially by rotating the threaded rod (26), and a radial sliding groove (28) for the piston rod (9) to move left and right is formed in the rotary table (2).
5. The device for drilling a roof beam slab for buildings according to claim 1, characterized in that the indexing disc (12) is provided with a plurality of radial slots (13) which are different in number on each indexing disc (12), and the indexing disc (12) on the vertical rod (1) can be replaced.
6. The roof beam plate drilling device for the building as claimed in claim 1, wherein a sleeve (29) is connected below each dividing plate (12), each dividing plate (12) and each sleeve (29) are divided into two semicircular parts along the diameter, a radial screw (30) is installed on the side wall of each part of the sleeve (29), and a radial threaded through hole (31) is formed in each vertical rod (1).
7. The drilling device for the roof beam plate for the building as recited in claim 1, characterized in that a vertical supporting column (32) is installed on the rotary table (2), the supporting column (32) and the first shell (3) are symmetrical with respect to the center of the circle of the rotary table (2), and a ball (33) is installed at the upper end of the supporting column (32).
8. The roof beam plate drilling device for the building as claimed in claim 1, wherein the vertical rod (1) comprises an inner rod (34) and an outer rod (35), the inner rod (34) is coaxially sleeved in the outer rod (35) and can slide up and down, and a fastening screw (36) is arranged at the upper end of the outer rod (35).
9. The roof beam plate drilling device for the building as claimed in claim 8, wherein the side wall of the upper end of the inner rod (34) is hinged with a plurality of inclined supporting rods (37) which are evenly distributed on the circumference, the lower end of each inclined supporting rod (37) is hinged with a supporting plate (38), and the lower surface of each supporting plate (38) is provided with anti-skidding teeth.
10. The roof beam plate drilling device for the building as claimed in claim 1, wherein a laser lamp (39) irradiating vertically upwards is arranged at the center of the circle of the upper surface of the rotary table (2).
CN201910467198.7A 2019-05-31 2019-05-31 Top beam plate drilling device for building Active CN110171068B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910467198.7A CN110171068B (en) 2019-05-31 2019-05-31 Top beam plate drilling device for building

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Application Number Priority Date Filing Date Title
CN201910467198.7A CN110171068B (en) 2019-05-31 2019-05-31 Top beam plate drilling device for building

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CN110171068A CN110171068A (en) 2019-08-27
CN110171068B true CN110171068B (en) 2020-02-18

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110948016A (en) * 2019-12-31 2020-04-03 王云飞 Accurate perforating device of back timber
CN111186031A (en) * 2020-02-24 2020-05-22 荆门宁杰机电技术服务有限公司 Drilling equipment for building
CN111993607A (en) * 2020-09-10 2020-11-27 温州融宸科技有限公司 Top beam plate vertical drilling support for building

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Publication number Priority date Publication date Assignee Title
DE3015532A1 (en) * 1980-04-23 1981-10-29 Detlef Stach Ceiling and floor panel installation accessory - is frame with lever attached for simultaneously operating electric drills at top and bottom
DE3328582A1 (en) * 1982-09-27 1984-03-29 Siemens AG, 1000 Berlin und 8000 München Mobile ceiling-drilling and assembly appliance for impact plugs
JPH081653A (en) * 1994-06-17 1996-01-09 Toshiba Eng & Constr Co Ltd Anchor mounting device
KR20070026763A (en) * 2007-02-16 2007-03-08 박종쾌 Anchor bolt hole drilling apparatus for ceiling
CN204018794U (en) * 2014-06-30 2014-12-17 中国二十冶集团有限公司 The indoor fixing construction system of a kind of ceiling
CN204295000U (en) * 2014-11-27 2015-04-29 中建八局第三建设有限公司 A kind of ceiling suspended ceiling hangs muscle drilling equipment
CN206561148U (en) * 2017-03-13 2017-10-17 深圳市锦炬消防机电工程有限公司 It is a kind of new for installing fire-fighting system equipment
CN207043380U (en) * 2017-07-29 2018-02-27 平湖市阳光建筑工程有限公司 Drilling equipment at the top of concrete structure floor
CN207372350U (en) * 2017-10-21 2018-05-18 深圳市中兴建工程有限公司 Smallpox plate drilling device
WO2018152510A1 (en) * 2017-02-20 2018-08-23 Felton J Reed Dust collection assembly for use with universal drill stand

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3015532A1 (en) * 1980-04-23 1981-10-29 Detlef Stach Ceiling and floor panel installation accessory - is frame with lever attached for simultaneously operating electric drills at top and bottom
DE3328582A1 (en) * 1982-09-27 1984-03-29 Siemens AG, 1000 Berlin und 8000 München Mobile ceiling-drilling and assembly appliance for impact plugs
JPH081653A (en) * 1994-06-17 1996-01-09 Toshiba Eng & Constr Co Ltd Anchor mounting device
KR20070026763A (en) * 2007-02-16 2007-03-08 박종쾌 Anchor bolt hole drilling apparatus for ceiling
CN204018794U (en) * 2014-06-30 2014-12-17 中国二十冶集团有限公司 The indoor fixing construction system of a kind of ceiling
CN204295000U (en) * 2014-11-27 2015-04-29 中建八局第三建设有限公司 A kind of ceiling suspended ceiling hangs muscle drilling equipment
WO2018152510A1 (en) * 2017-02-20 2018-08-23 Felton J Reed Dust collection assembly for use with universal drill stand
CN206561148U (en) * 2017-03-13 2017-10-17 深圳市锦炬消防机电工程有限公司 It is a kind of new for installing fire-fighting system equipment
CN207043380U (en) * 2017-07-29 2018-02-27 平湖市阳光建筑工程有限公司 Drilling equipment at the top of concrete structure floor
CN207372350U (en) * 2017-10-21 2018-05-18 深圳市中兴建工程有限公司 Smallpox plate drilling device

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