CN102296932A - Floor type indoor ceiling concrete slab bottom drilling mechanism - Google Patents

Floor type indoor ceiling concrete slab bottom drilling mechanism Download PDF

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Publication number
CN102296932A
CN102296932A CN2011101291655A CN201110129165A CN102296932A CN 102296932 A CN102296932 A CN 102296932A CN 2011101291655 A CN2011101291655 A CN 2011101291655A CN 201110129165 A CN201110129165 A CN 201110129165A CN 102296932 A CN102296932 A CN 102296932A
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CN
China
Prior art keywords
sleeve
concrete slab
puncher
tube
indoor ceiling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2011101291655A
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Chinese (zh)
Other versions
CN102296932B (en
Inventor
李国强
张永生
刘佩良
陆建明
朱卫兵
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.)
CHANGSHU CITY JINLONG DECORATION Co Ltd
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CHANGSHU CITY JINLONG DECORATION Co Ltd
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Publication date
Application filed by CHANGSHU CITY JINLONG DECORATION Co Ltd filed Critical CHANGSHU CITY JINLONG DECORATION Co Ltd
Priority to CN2011101291655A priority Critical patent/CN102296932B/en
Publication of CN102296932A publication Critical patent/CN102296932A/en
Application granted granted Critical
Publication of CN102296932B publication Critical patent/CN102296932B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention discloses a floor type indoor ceiling concrete slab bottom drilling mechanism which belongs to the technical field of building indoor decoration construction instruments and comprising a supporting pipe, a pressure lever handle, an outer sleeve, a grip type power supply switch, an inner sleeve, a puncher bracket and a puncher, wherein the bottom of the supporting pipe is provided with a stabilizing plate; the pressure lever handle is connected to the supporting pipe; the upper part of the outer sleeve is provided with one group of outer sleeve regulating holes, the lower part of the outer sleeve is matched with the outer wall of the supporting pipe, the outer sleeve moves up and down when being adhered on the outer wall of the supporting pipe, the lower end part of the outer sleeve is hinged with the pressure lever handle; the grip type power supply switch is fixed on the supporting pipe; the inner sleeve is accommodated in an outer sleeve cavity of the outer sleeve, the inner sleeve is provided with one group of inner sleeve regulating holes, when the inner sleeve regulating holes and the outer sleeve regulating holes are mutually coincided, the inner sleeve and the outer sleeve are locked by using an inner sleeve locking member; the puncher bracket is arranged at the top end part of the inner sleeve; and the puncher is fixed on the puncher bracket and is in electrical control connection with the grip type power supply switch. The floor type indoor ceiling concrete slab bottom drilling mechanism has the advantages of ensuring stability, having safety and light integral weight, being capable of adapting to different spatial heights and being convenient for movement.

Description

Console mode indoor ceiling concrete slab subdrilling holes mechanism
Technical field
The invention belongs to the building interior decoration and decorate construction technique with the apparatus field, be specifically related to a kind of console mode indoor ceiling concrete slab subdrilling holes mechanism
Background technology
As the industry's knowledge of the reason, before implementing to decorate decoration at the bottom of the indoor ceiling concrete slab to industry, commerce, public building and civilian construction etc. and/or laying the line, need and to arrive as the suspension rod predetermined fixed of transition member at the bottom of the indoor ceiling concrete slab of building, then ceiling board (the industry custom claims ceiling) keel, pipeline and/or equipment (as air-conditioning, light fixture etc.) are fixed with suspension rod.
At present, the operating type that fixes at the bottom of suspension rod and the indoor ceiling concrete slab is all finished with hanging operation, so-called hanging operation is meant by means of ladder, the scaffold of building or job platform implements construction.The operator climbs in ladder, scaffold or job platform, with the instrument of punchinging such as electric hammer or similar instrument Drilling eyelet at the bottom of the indoor ceiling concrete slab, inserts the expansion bolt cover in eyelet, and screws in suspension rod in the expansion bolt cover and screw.
There is following shortcoming in above-mentioned job practices: the one, and the engineering quantity of construction early-stage preparations is big, because liftoff level ground clear height is bigger at the bottom of the indoor ceiling concrete slab of building, scaffold erecting or time that job platform spent comparatively tediously long, exert an influence in time carrying out the suspension rod construction; The 2nd, safety is difficult to ensure, because if rely on the ladder hanging operation of ascending a height, so undoubtedly have serious potential safety hazard; The 3rd, efficiency of construction operation the intensity low and constructor is big; The 4th, the aftermath trouble is because need to remove scaffold or construction operation platform after suspension rod installs; The 5th, construction cost is big, the input manpower is many, and for example take and tear the fringe cost that scaffold can increase construction open, or the like.
Certainly, on indoor terrace, terrace point position is set according to Design Requirement Drawing, the device that utilizes infrared rays level and so on again shines terrace point position and forms luminous point on promptly transferring at the bottom of the indoor ceiling concrete slab with radiation modality, and aim at the luminous point place mark for dowel hold that draws with the rod member that the end is fixed with marking pen, aim at the boring of mark for dowel hold position by the console mode borehole drill construction then, box spanner or similar instrument by lengthening is fixed to interior expansion bolt cover in the hole that is drilled with together with suspension rod at last, this operating type can be avoided aforesaid shortcoming, but, stand on the indoor terrace and must finish by means of special borehole drill construction the boring of mark for dowel hold position.Here the special borehole drill construction of being said should satisfy following key element at least: one, structure have desirable stability; Its two, operation has a reliable safety; Its three, avoid too heavy and have mobility; Its four, different spatial altitudes is had adjustable, or the like.
The applicant has done literature search, Chinese patent notification number CN1200185C recommends the job practices of a kind of Steel-frame building thing concrete-steel beams and floor to be arranged and hang die device, and publication number CN101575892A introduces a kind of aluminum plate curved furred ceiling of large tracts of land lower edge cup joint style perforated percentage and job practices thereof.Because these technical schemes all are at the installation of particular elements, thereby do not have referential technical meaning to the required apparatus in aforesaid indoor ceiling concrete slab subdrilling hole for standing on the indoor terrace.For this reason, the applicant has done lasting and good try has found the borehole drill construction that is satisfied aforementioned key element finally, and technical scheme described below produces under this background
Summary of the invention
Task of the present invention is to provide a kind of and helps to guarantee desirable stability, helps ensureing safety when using, is of value to and embodies mobility and the console mode indoor ceiling concrete slab subdrilling holes mechanism of being convenient to adapt to the different spaces height is arranged.
Task of the present invention is finished like this, and a kind of console mode indoor ceiling concrete slab subdrilling holes mechanism comprises stay pipe, and the bottom expansion of this stay pipe is provided with the steadying plate of a diameter greater than the external diameter of stay pipe; One depression bar handle, this depression bar handle pivot is connected on the stay pipe; One outer tube, the top of this outer tube is spaced apart to be provided with one group of outer tube and to adjust the hole, match with the outer wall of stay pipe by at least one anchor ear cover in the bottom, and the outer wall that is pasting stay pipe moves up and down, and the bottom of outer tube is also hinged with described depression bar handle; One gripping type power switch is fixed on the stay pipe; One inner sleeve, be contained in the overcoat tube chamber of outer tube to this inner sleeve plug, and spaced apartly on this inner sleeve be provided with one group of inner sleeve and adjust the hole, inner sleeve is adjusted the hole and is adjusted the hole with described outer tube and match, and by the inner sleeve locking piece inner sleeve and outer tube is locked when inside and outside sleeve pipe is adjusted the hole and overlapped each other; One puncher support, this puncher support is fixed on the top ends of inner sleeve; One puncher, this puncher is fixed on the puncher support, and is connected with the electrical control of described gripping type power switch.
In a specific embodiment of the present invention, described stay pipe shape of cross section is rectangular or square, and the shape of cross section of described outer tube is rectangular or square, and the shape of cross section of described inner sleeve is identical with the shape of cross section of outer tube.
In another specific embodiment of the present invention, described depression bar handle is extended with a pair of parallel articulated jib towards an end of described stay pipe, and this is pivotally connected to articulated jib and stay pipe, and hinged with the bottom of described outer tube.
In another specific embodiment of the present invention, described inner sleeve locking piece is a bearing pin screw of being furnished with lock nut.
In another specific embodiment of the present invention, want this shape of the support of punchinging L-shaped.
Also have in the specific embodiment of the present invention, described puncher has one handle, and handle is provided with a base portion and the spacing adjusting rod of touching at the bottom of the indoor ceiling concrete slab that is used to prevent the drill bit of puncher.
More of the present invention and in specific embodiment, described puncher is electric hammer or electric drill.
In of the present invention and then specific embodiment, the base portion of described drill bit is equipped with a dust cap, and the top end face of described spacing adjusting rod is concordant with dust cap.
Of the present invention again more and in specific embodiment, be equipped with a depression bar taper knob away from an end of described stay pipe on the described depression bar handle and at the depression bar handle.
In again of the present invention and then specific embodiment, the surface of described depression bar taper knob constitutes anti-skidding bead.
Technical scheme provided by the invention is provided with steadying plate because the bottom of stay pipe is expanded, and therefore helps to guarantee stability; Owing to the gripping type power switch is located on the stay pipe, is convenient to the operator and holds the control of kneading, thereby have safety; Owing to, thereby can adapt to different spatial altitudes with the plug cooperation each other of inside and outside sleeve pipe; Because stay pipe, inner sleeve and outer tube are hollow tube, thereby overall weight gently is convenient to move.
Description of drawings
Fig. 1 is a specific embodiment structure chart of the present invention.
Fig. 2 is an application examples schematic diagram of the present invention.
The specific embodiment
For the auditor that the makes Patent Office especially public can be expressly understood technical spirit of the present invention and beneficial effect more, the applicant general elaborates in the mode of embodiment below, but to the description of embodiment all is not restriction to the present invention program, any according to the present invention's design done only for pro forma but not substantial equivalent transformation all should be considered as technical scheme category of the present invention.
Embodiment:
Please be referring to Fig. 1, to have provided a shape of cross section be foursquare and have the stay pipe 1 of cavity 12, expand to establish in the bottom of this stay pipe 1 and constitute the steadying plate 11 of a diameter greater than the diameter of stay pipe 1, the shape of steadying plate 11 both can be a square, it also can be disc, increase the contact area of stay pipe 1 and terrace by steadying plate 11, thereby embody stability.One depression bar handle 2 is hinged with stay pipe 1, shown in figure, has a pair of parallel articulated jib 21 at this stay pipe 2 towards an end of stay pipe 1, this is the external diameter of stay pipe 1 to the distance between the articulated jib 21 just, and a pair of articulated jib 21 both can with depression bar handle 2 integral productions, also can be with welding, riveted joint or fixing with screw and depression bar handle 2, present embodiment is fixing with 2 welding of depression bar handle with a pair of articulated jib 21.A pair of articulated jib 21 usefulness swivel pins 211 and stay pipe 1 hinged (or claiming pivotally connected), and it is hinged with the lower end of the following outer tube that also will illustrate 3 by pivot pin 34, preferred scheme offers pivot pin groove 212 at a pair of articulated jib 21 and pivot pin 34 hinged positions.An end that deviates from stay pipe 1 at depression bar handle 2 also be the free end of depression bar handle 2 set firmly be preferably that insulation materials makes depression bar taper knob 22 arranged, and have the bead 221 that is used to increase frictional force on the surface of depression bar taper knob 22.
One has bottom that overcoat tube chamber 33 and shape of cross section be foursquare outer tube 3 matches with the outer wall of stay pipe 1 by a pair of anchor ear cover 32, promptly touch with the outer wall subsides of stay pipe 1, a pair of anchor ear overlaps 32 each intervals and fixing with stay pipe 1 with bolt 321.Aforesaid pivot pin 34 is fixed on the outer wall of lower end of outer tube 3, and the spaced apart outer tube that is provided with is adjusted hole 31 on the corresponding wall body of the upper end of outer tube 3.When the depression bar taper knob 22 of operator grasps depression bar handle 2 was also pressed downwards, the outer wall that outer tube 3 is just pasting stay pipe 1 moved up, otherwise under self-gravity action, outer tube 3 is just to bottom offset.
A gripping type power switch 4 is fixed on the stay pipe 1, is connected with power supply by the plug on the power line 42, that is to say in use with plug on the power line 42 and electrical socket inserting.One inner sleeve 5 with cavity cooperates with aforesaid overcoat tube chamber 33 plugs, the shape of cross section of this inner sleeve 5 is square, and spaced apartly on the corresponding wall body of inner sleeve 5 be provided with one group of inner sleeve and adjust hole 51, it is corresponding with outer tube adjustment hole 31 that inner sleeve is adjusted the position of hole 51 on the wall body of inner sleeve 5.With inner sleeve 5 from overcoat the tube chamber 33 extrapolated or inside retractions of outer tube 3 to required degree, adopt the inner sleeve locking piece of filling the post of by the bearing pin screw 511 to insert the outer tube that overlaps each other and adjust hole 31 and inner sleeve and adjust in the hole 51 and and limit with lock nut 5111.
Please continue to see Fig. 1, shape is preferably L shaped puncher support 6 preferably with the mode solid welding of the welding top at inner sleeve 5, one puncher 7 adopts retainer ring 75 and fixed cover 76 to fix with puncher support 6, and the motor 73 of puncher 7 is connected with aforesaid gripping type power switch 4 electrical controls by power supply lead wire 731.Puncher 7 has one handle 71, and handle 71 is provided with a spacing adjusting rod 711, and the drill bit 72(of puncher 7 can comply with to be needed to change) be configured on the drill bit jaw 74.Preferably, be provided with a dust cap 721 at the base portion of drill bit 72, dust cap 721 is made by robber materials.The height of aforesaid spacing adjusting rod 711 is preferably concordant with dust cap 721, but be not less than the end face of drill bit jaw 74 at least towards drill bit 72 1 ends, play by spacing adjusting rod 711 and to prevent that puncher 7 from showing with 8(Fig. 2 at the bottom of the indoor ceiling concrete slab) effect of touching mutually, and dust cap 721 plays dustproof effect.In the present embodiment, aforesaid puncher 7 adopts commercially available electric hammer, but does not repel similar instrument.
Application examples:
Please be referring to Fig. 2 and still in conjunction with Fig. 1, at the bottom of will be during 8 Drilling eyelets to the indoor ceiling concrete slab, transport the console mode indoor ceiling concrete slab subdrilling holes mechanism by the described structure of embodiment of the present invention to job site so, and it is on the indoor terrace 9 according to state shown in Figure 2.With plug (not shown) on the power line 42 and electrical socket inserting, stand on the indoor terrace 9 and under the state of seizing stay pipe 1 on both sides by the arms, press depression bar handle 2 downwards by the operator, press the button 41 of gripping type power switch 4 simultaneously, depression bar handle 2 and stay pipe 1 are hinged or claim a pivotally connected end to top offset, drive outer tube 3 and drive on the inner sleeve 5 by outer tube 3 simultaneously and move, also simultaneously by inner sleeve 5 drive puncher supports 6 together with puncher 7 to top offset, drill bit 72 is touched and to the indoor ceiling concrete slab subdrilling eye of punchinging.The operator to aforesaid rightabout effect, makes depression bar handle 2 a end that depression bar handle 2 and stay pipe 1 be hinged to bottom offset, thereby makes drill bit 72 descending, promptly withdraws from and has been drilled with the eyelet that finishes.In aforesaid engineering process, in case spacing adjusting rod 711 touches at the bottom of the indoor ceiling concrete slab 8, the degree of depth that then shows the eyelet that is drilled with is to the limit.
According to from the bottom of the indoor ceiling concrete slab 8 to the variation of the height between the indoor terrace 9 internally, outer tube 5,3 makes accommodation, just inner sleeve 5 is pulled out or is stretched into respect to the overcoat tube chamber 33 of outer tube 3.
In sum, technical scheme provided by the invention can remedy the described shortcoming in the prior art, can embody the technique effect of being said in the superincumbent technique effect of the applicant hurdle objectively, and therefore can yet be regarded as is a ultimate attainment technical scheme

Claims (10)

1. a console mode indoor ceiling concrete slab subdrilling holes mechanism is characterized in that comprising stay pipe (1), and the bottom expansion of this stay pipe (1) is provided with the steadying plate (11) of a diameter greater than the external diameter of stay pipe (1); One depression bar handle (2), this depression bar handle (2) is pivotally connected on stay pipe (1); One outer tube (3), the top of this outer tube (3) is spaced apart to be provided with one group of outer tube and to adjust hole (31), match with the outer wall of stay pipe (1) by at least one anchor ear cover (32) in the bottom, and the outer wall that is pasting stay pipe (1) moves up and down, and the bottom of outer tube (3) is also hinged with described depression bar handle (1); One gripping type power switch (4) is fixed on the stay pipe (1); One inner sleeve (5), be contained in the overcoat tube chamber (33) of outer tube (3) to this inner sleeve (5) plug, and go up the spaced apart one group of inner sleeve adjustment hole (51) that is provided with at this inner sleeve (5), inner sleeve is adjusted hole (51) and is matched with described outer tube adjustment hole (31), and by inner sleeve locking piece (511) inner sleeve (5) and outer tube (3) is locked when overlapping each other in inside and outside sleeve pipe adjustment hole (51,31); One puncher support (6), this puncher support (6) is fixed on the top ends of inner sleeve (5); One puncher (7), this puncher (7) is fixed on the puncher support (6), and is connected with described gripping type power switch (4) electrical control.
2. console mode indoor ceiling concrete slab subdrilling holes mechanism according to claim 1, it is characterized in that described stay pipe (1) shape of cross section is rectangular or square, the shape of cross section of described outer tube (3) is rectangular or square, and the shape of cross section of described inner sleeve (5) is identical with the shape of cross section of outer tube (3).
3. console mode indoor ceiling concrete slab subdrilling holes mechanism according to claim 1, it is characterized in that described depression bar handle (2) is extended with a pair of parallel articulated jib (21) towards an end of described stay pipe (1), this is pivotally connected to articulated jib (21) and stay pipe (1), and hinged with the bottom of described outer tube (3).
4. console mode indoor ceiling concrete slab subdrilling holes mechanism according to claim 1 is characterized in that described inner sleeve locking piece (511) is for being furnished with the bearing pin screw of lock nut (5111).
5. console mode indoor ceiling concrete slab subdrilling holes mechanism according to claim 1, it is characterized in that want this shape of the support of punchinging L-shaped.
6. console mode indoor ceiling concrete slab subdrilling holes mechanism according to claim 1, it is characterized in that described puncher (7) has one handle (71), handle (71) is provided with a spacing adjusting rod (711) that is used to prevent touching at the bottom of the base portion of drill bit (72) of puncher (7) and the indoor ceiling concrete slab.
7. according to claim 1 or 6 described console mode indoor ceiling concrete slab subdrilling holes mechanisms, it is characterized in that described puncher (7) is electric hammer or electric drill.
8. console mode indoor ceiling concrete slab subdrilling holes mechanism according to claim 6 is characterized in that the base portion of described drill bit (72) is equipped with a dust cap (721), and the top end face of described spacing adjusting rod (711) is concordant with dust cap (721).
9. according to claim 1 or 3 described console mode indoor ceiling concrete slab subdrilling holes mechanisms, it is characterized in that described depression bar handle (2) is gone up and be equipped with a depression bar taper knob (22) away from an end of described stay pipe (1) at depression bar handle (2).
10. console mode indoor ceiling concrete slab subdrilling holes mechanism according to claim 9 is characterized in that the surface of described depression bar taper knob (22) constitutes anti-skidding bead (221).
CN2011101291655A 2011-05-18 2011-05-18 Floor type indoor ceiling concrete slab bottom drilling mechanism Expired - Fee Related CN102296932B (en)

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Application Number Priority Date Filing Date Title
CN2011101291655A CN102296932B (en) 2011-05-18 2011-05-18 Floor type indoor ceiling concrete slab bottom drilling mechanism

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Application Number Priority Date Filing Date Title
CN2011101291655A CN102296932B (en) 2011-05-18 2011-05-18 Floor type indoor ceiling concrete slab bottom drilling mechanism

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CN102296932B CN102296932B (en) 2012-11-07

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103015891A (en) * 2012-12-27 2013-04-03 歌山建设集团有限公司 Movable roof expansion bolt punching device
CN103042249A (en) * 2012-12-25 2013-04-17 宁波鑫晟工具有限公司 Electric drill frame
CN103042252A (en) * 2012-12-25 2013-04-17 宁波鑫晟工具有限公司 Hole drilling device
CN103042248A (en) * 2012-12-25 2013-04-17 宁波鑫晟工具有限公司 Boring device
CN103042247A (en) * 2012-12-25 2013-04-17 宁波鑫晟工具有限公司 Ceiling punching device
CN103042251A (en) * 2012-12-25 2013-04-17 宁波鑫晟工具有限公司 Vertical drilling assisting electric drill frame for handheld electric drill
CN103056419A (en) * 2012-12-25 2013-04-24 宁波鑫晟工具有限公司 Ceiling punching device
CN103691991A (en) * 2013-12-03 2014-04-02 兖矿东华建设有限公司 Moveable roof drilling expansion bracket
CN108032445A (en) * 2017-11-22 2018-05-15 冯云鹏 Flooring puncher is used in a kind of high security building water pipe installation
CN108500333A (en) * 2017-05-05 2018-09-07 骆兰珍 A kind of indoor drilling machine of automatic cooling and speed governing
CN108748712A (en) * 2018-05-30 2018-11-06 张文强 A kind of energy-saving flooring drilling machine of electromechanics

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DE20115213U1 (en) * 2001-09-14 2002-01-03 Fahl Joachim Hand drill holder
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CN201231532Y (en) * 2008-05-23 2009-05-06 河北省第四建筑工程公司 Mobile boring device for building top board
CN201614726U (en) * 2009-12-04 2010-10-27 中国第一冶金建设有限责任公司 Boring device of top plate
CN201714044U (en) * 2010-05-25 2011-01-19 潍坊昌大建设集团有限公司 Ceiling hole drilling device
CN202073501U (en) * 2011-05-18 2011-12-14 常熟市金龙装饰有限责任公司 Floor type drilling mechanism for bottom of concrete slab of indoor ceiling

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DE20115213U1 (en) * 2001-09-14 2002-01-03 Fahl Joachim Hand drill holder
CN201231532Y (en) * 2008-05-23 2009-05-06 河北省第四建筑工程公司 Mobile boring device for building top board
JP3147842U (en) * 2008-11-04 2009-01-22 ナニワ建設機材株式会社 Drill stand
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Cited By (21)

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Publication number Priority date Publication date Assignee Title
CN103042247B (en) * 2012-12-25 2015-12-02 宁波鑫晟工具有限公司 Ceiling perforating device
CN103042249A (en) * 2012-12-25 2013-04-17 宁波鑫晟工具有限公司 Electric drill frame
CN103042252A (en) * 2012-12-25 2013-04-17 宁波鑫晟工具有限公司 Hole drilling device
CN103042248A (en) * 2012-12-25 2013-04-17 宁波鑫晟工具有限公司 Boring device
CN103042247A (en) * 2012-12-25 2013-04-17 宁波鑫晟工具有限公司 Ceiling punching device
CN103042251A (en) * 2012-12-25 2013-04-17 宁波鑫晟工具有限公司 Vertical drilling assisting electric drill frame for handheld electric drill
CN103056419A (en) * 2012-12-25 2013-04-24 宁波鑫晟工具有限公司 Ceiling punching device
CN103056419B (en) * 2012-12-25 2016-01-06 宁波鑫晟工具有限公司 A kind of ceiling perforating device
CN103042249B (en) * 2012-12-25 2015-09-09 宁波鑫晟工具有限公司 Electric drill stand
CN103042251B (en) * 2012-12-25 2015-09-09 宁波鑫晟工具有限公司 Electric hand drill vertical perforating auxiliary electrical drilling cramp
CN103042252B (en) * 2012-12-25 2015-09-09 宁波鑫晟工具有限公司 Drilling equipment
CN103042248B (en) * 2012-12-25 2015-09-09 宁波鑫晟工具有限公司 A kind of drilling equipment
CN103015891B (en) * 2012-12-27 2014-11-26 歌山建设集团有限公司 Movable roof expansion bolt punching device
CN103015891A (en) * 2012-12-27 2013-04-03 歌山建设集团有限公司 Movable roof expansion bolt punching device
CN103691991A (en) * 2013-12-03 2014-04-02 兖矿东华建设有限公司 Moveable roof drilling expansion bracket
CN103691991B (en) * 2013-12-03 2016-03-23 兖矿东华建设有限公司 Portable top plate drilling expansion bracket
CN108500333A (en) * 2017-05-05 2018-09-07 骆兰珍 A kind of indoor drilling machine of automatic cooling and speed governing
CN108500333B (en) * 2017-05-05 2019-07-26 骆兰珍 A kind of indoor drilling machine of automatic cooling and speed regulation
CN108032445A (en) * 2017-11-22 2018-05-15 冯云鹏 Flooring puncher is used in a kind of high security building water pipe installation
CN108748712A (en) * 2018-05-30 2018-11-06 张文强 A kind of energy-saving flooring drilling machine of electromechanics
CN108748712B (en) * 2018-05-30 2021-04-20 张文强 Electromechanical energy-saving floor drilling machine

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