CN108081476A - A kind of wall adjustable drilling aperture apparatus for building - Google Patents

A kind of wall adjustable drilling aperture apparatus for building Download PDF

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Publication number
CN108081476A
CN108081476A CN201711361423.6A CN201711361423A CN108081476A CN 108081476 A CN108081476 A CN 108081476A CN 201711361423 A CN201711361423 A CN 201711361423A CN 108081476 A CN108081476 A CN 108081476A
Authority
CN
China
Prior art keywords
plate
fixed
motor
threaded rod
drilling
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.)
Pending
Application number
CN201711361423.6A
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Chinese (zh)
Inventor
邢济祥
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.)
Zhengzhou Moer Electronic Information Technology Co Ltd
Original Assignee
Zhengzhou Moer Electronic Information Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhengzhou Moer Electronic Information Technology Co Ltd filed Critical Zhengzhou Moer Electronic Information Technology Co Ltd
Priority to CN201711361423.6A priority Critical patent/CN108081476A/en
Publication of CN108081476A publication Critical patent/CN108081476A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B28D7/00Accessories specially adapted for use with machines or devices of the preceding groups
    • 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
    • B28D7/02Accessories specially adapted for use with machines or devices of the preceding groups for removing or laying dust, e.g. by spraying liquids; for cooling work

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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 discloses a kind of wall adjustable drilling aperture apparatus for building,Including bottom plate,Handrail,Installing plate,First sliding block,First motor,First threaded rod,Movable block,Second sliding block,Support plate,Second motor,Partial gear,Rack,Spring,Movable plate,Suction nozzle,Dust catcher,Dust collects shovel,The 3rd motor is installed on movable plate right side wall,Drilling rod and the second threaded rod,The present invention is equipped with the first motor,First threaded rod and movable block,The height of drilling rod can be adjusted by cooperation,The hole of different height can be bored,Equipped with the second motor,Partial gear,Rack,Movable plate,3rd motor and drilling rod,Drilling rod side-to-side movement is driven by coordinating,It drills,Multiple drill,It can ensure the depth and quality of drilling,Improve drilling effect,Equipped with the second threaded rod and the first sliding block,Drilling rod and distance between the walls can be adjusted,Achieve the purpose that adjust drilling depth.

Description

A kind of wall adjustable drilling aperture apparatus for building
Technical field
The present invention relates to Architectural Equipment technical fields, are specifically a kind of wall adjustable drilling aperture apparatus for building.
Background technology
Hole is processed drilling on solid material with drill bit.The hole machined of various parts removes a part by vehicle, boring, milling Lathes is waited to complete outer, be greatly to be completed by pincers worker using drilling machine and boring bar tool (drill bit, reamer, reamer etc.). When drilling on drilling machine, under normal circumstances, drill bit should complete two movements simultaneously;Main motion, i.e. drill bit are transported around the rotation of axis Dynamic (cutting movement);The linear motion (feed motion) of synkinesia, i.e. drill bit along axis direction against workpiece, during drilling, Mainly due to shortcoming present on drill bit structure, processing quality is influenced, machining accuracy is generally following at IT10 grades, surface roughness For Ra12.5 μm or so, category roughing.
It is largely to wall using man-hour manually hand-held drilling device at present when the wall to construction site drills Wall drills, and some drilling device drilling efficiencies are than relatively low, adds the labor intensity of worker, and drilling when It waits, drilling depth is difficult to adjust, and drilling effect is poor, and work efficiency is low.
The content of the invention
It is an object of the invention to provide a kind of wall adjustable drilling aperture apparatus for building, to solve in above-mentioned background technology The problem of proposition.
To achieve the above object, the present invention provides following technical solution:
Including bottom plate, idler wheel, bottom are mounted on described four angles of bottom base plate for a kind of wall adjustable drilling aperture apparatus for building Plate left end is fixed with handrail, is equipped with installing plate above bottom plate, installing plate bottom is fixed with the first sliding block, the first sliding block and bottom plate Top is slidably connected, and the installing plate bottom is equipped with the first motor, and the output shaft of the first motor passes through shaft coupling and the first spiral shell Rasp bar is fixedly connected, and the first threaded rod other end at the top of bearing block and installing plate by being rotatablely connected, the first threaded rod outer cover Equipped with movable block, the second sliding block is fixed on movable block left side wall, the second sliding block is connected with installing plate side walls, and movable block is right Support plate is fixed on side wall, the second motor is installed above support plate, incomplete tooth is installed on the output shaft of the second motor Wheel, partial gear top are equipped with rack, and rack is engaged with partial gear, and rack left end is fixed with spring, the spring other end It is fixed in fixed plate, rack right end is fixed with movable plate, and movable plate bottom is fixed with the 3rd sliding block, the 3rd sliding block and support plate Top is slidably connected, and is equipped with suction nozzle at the top of movable plate, hose is connected on suction nozzle, the hose other end is connected with dust catcher, institute It states support plate right end and is fixed with dust collection shovel, the 3rd motor, the output of the 3rd motor are installed on movable plate right side wall Axis is fixedly connected by shaft coupling with drilling rod, and guide plate is equipped on the left of the installing plate, the second threaded rod is equipped on guide plate, Second threaded rod is threadedly coupled with guide plate, and the second threaded rod right end is rotatablely connected by bearing block and installing plate.
As further embodiment of the present invention:The idler wheel is self-locking idler wheel.
As further embodiment of the present invention:Instrument cases are fixed on the left of the plate upper surface.
As further embodiment of the present invention:The fixed plate is fixedly installed in support plate.
As further embodiment of the present invention:The dust catcher is installed on bottom plate.
As further embodiment of the present invention:The dust is collected and is fixed with rubber guiding pad on shovel.
As further embodiment of the present invention:The second threaded rod left end is fixed with rotational handle.
Compared with prior art, the beneficial effects of the invention are as follows:The present invention is equipped with the first motor, the first threaded rod and activity Block starts the first motor forward or reverse, and the first motor drives the first threaded rod to rotate, and the first threaded rod drives movable block upward Or move downward, movable block drives support plate movement, so as to adjust the height of drilling rod, can bore the hole of different height, equipped with the Two motors, partial gear, rack, movable plate, the 3rd motor and drilling rod start the second motor and the 3rd motor, the 3rd motor Drive drilling rod rotate, while the second motor drive partial gear rotate, partial gear by with spring mating band carry-over bar Side-to-side movement, rack drives movable plate side-to-side movement, movable plate drive drilling rod side-to-side movement by the 3rd motor, drill, Multiple drill can ensure the depth and quality of drilling, improve drilling effect, equipped with the second threaded rod and the first sliding block, rotate Rotational handle, rotational handle drive threaded rod to rotate, and threaded rod is so as to drive installing plate to move, and installing plate is so as to driving drilling rod to transport It is dynamic, so as to adjust drilling rod and distance between the walls, achieve the purpose that adjust drilling depth, be collected equipped with dust catcher and dust Shovel, dust catcher work, by the dust generated when drilling by suction nozzle suction hose, subsequently into dust catcher, dust being avoided to fly Dissipating influences the health of environment and staff, while the disintegrating slag fallen then falls into dust and collects in shovel, avoids making ground dirty follow-up It is difficult to clear up.
Description of the drawings
Fig. 1 is the structure diagram of wall adjustable drilling aperture apparatus for building.
Fig. 2 is partial gear and the structure diagram of rack cooperation in wall adjustable drilling aperture apparatus for building.
In figure:1- bottom plates, the first sliding blocks of 2-, the first motors of 3-, 4- dusts collect shovel, 5- rubber guiding pad, 6- drilling rods, 7- Support plate, the 3rd motors of 8-, 9- suction nozzles, 10- movable plates, 11- racks, 12- partial gears, 13- springs, the first screw threads of 14- Bar, 15- installing plates, 16- movable blocks, the second sliding blocks of 17-, 18- guide plates, 19- rotational handles, the second threaded rods of 20-, 21- are soft Pipe, 22- dust catchers, 23- instrument cases, 24- handrails, 25- idler wheels, the second motors of 26-.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work Embodiment belongs to the scope of protection of the invention.
Please refer to Fig.1~2, in the embodiment of the present invention, a kind of wall adjustable drilling aperture apparatus for building, including bottom plate 1, institute It states and idler wheel 25 is mounted on the angle of bottom plate 1 bottom four, idler wheel 25 is self-locking idler wheel, and 1 left end of bottom plate is fixed with handrail 24, Instrument cases 23 are fixed on the left of 1 upper surface of bottom plate, 1 top of bottom plate is equipped with installing plate 15, and 15 bottom of installing plate is fixed with the first cunning Block 2, the first sliding block 2 are slidably connected with 1 top of bottom plate, and 15 bottom of installing plate is equipped with the first motor 3, the first motor 3 Output shaft is fixedly connected by shaft coupling with the first threaded rod 14, and 14 other end of the first threaded rod passes through bearing block and installing plate 15 Top is rotatablely connected, and 14 outer cover of the first threaded rod is equipped with movable block 16, and the second sliding block 17 is fixed on 16 left side wall of movable block, Second sliding block 17 is connected with 15 side walls of installing plate, and support plate 7,7 top peace of support plate are fixed on 16 right side wall of movable block Equipped with the second motor 26, partial gear 12 is installed on the output shaft of second motor 26,12 top of partial gear is equipped with tooth Item 11, rack 11 are engaged with partial gear 12, and 11 left end of rack is fixed with spring 13, and 13 other end of spring is fixed on fixed plate On, fixed plate is fixedly installed in support plate 7, and 11 right end of rack is fixed with movable plate 10, and 10 bottom of movable plate is fixed with the 3rd Sliding block, the 3rd sliding block are slidably connected with 7 top of support plate, and 10 top of movable plate is equipped with suction nozzle 9, and hose is connected on suction nozzle 9 21,21 other end of hose is connected with dust catcher 22, and dust catcher 22 is installed on bottom plate 1, and 7 right end of support plate is fixed with dust Shovel 4 is collected, dust is collected and is fixed with rubber guiding pad 5 on shovel 4, by the elasticity for making rubber guiding pad 5 it is made to against wall always Wall makes dust fall on dust in drilling and collects in shovel 4, and the 3rd motor 8, the 3rd electricity are installed on 10 right side wall of movable plate The output shaft of machine 8 is fixedly connected by shaft coupling with drilling rod 6, and 15 left side of the installing plate is equipped with guide plate 18, on guide plate 18 The second threaded rod 20 is equipped with, the second threaded rod 20 is threadedly coupled with guide plate 18, and 20 right end of the second threaded rod passes through bearing block It is rotatablely connected with installing plate 15,20 left end of the second threaded rod is fixed with rotational handle 19.
The present invention operation principle be:In the use of the present invention, device is moved to bore position first, make bottom plate 1 right End is contradicted with wall, then according to the position to be drilled, starts 3 forward or reverse of the first motor, the first motor 3 drives first Threaded rod 14 rotates, and the first threaded rod 14 drives movable block 16 to be moved upwardly or downwardly, and movable block 16 drives support plate 7 to move, So as to adjust the height of drilling rod 6, the hole of different height can be bored, after adjusting, starts the second motor 26 and the 3rd motor 8, the Three motors 8 drive drilling rod 6 rotate, while the second motor 26 drive partial gear 12 rotate, partial gear 12 by with bullet 13 mating band carry-over bar of spring, 12 side-to-side movement, rack 12 drive 10 side-to-side movement of movable plate, and movable plate 10 passes through 8 band of the 3rd motor 6 side-to-side movement of dynamic drilling rod, drills, multiple drill, can ensure the depth and quality of drilling, improve drilling effect, when need When adjusting drilling depth, rotational handle 19 is rotated, rotational handle 19 drives threaded rod 20 to rotate, and threaded rod 20 is pacified so as to drive Loading board 15 moves, and installing plate 15, so as to adjust drilling rod 6 and distance between the walls, reaches adjusting and bore so as to which drilling rod 6 be driven to move The purpose of hole depth, in drilling, dust catcher 22 works, by the dust that generates when drilling by 9 suction hose 21 of suction nozzle, then Into in dust catcher 22, dust dispersion is avoided to influence environment and the health of staff, while the disintegrating slag fallen then falls into dust It collects in shovel 4, avoids making ground dirty and be subsequently difficult to clear up.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned exemplary embodiment, Er Qie In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power Profit requirement rather than above description limit, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims Variation is included within the present invention.Any reference numeral in claim should not be considered as to the involved claim of limitation.
Moreover, it will be appreciated that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should Using specification as an entirety, the technical solutions in each embodiment can also be properly combined, forms those skilled in the art It is appreciated that other embodiment.

Claims (7)

1. a kind of wall adjustable drilling aperture apparatus for building, including bottom plate(1), which is characterized in that the bottom plate(1)Bottom four Idler wheel is mounted on angle(25), bottom plate(1)Left end is fixed with handrail(24), bottom plate(1)Top is equipped with installing plate(15), peace Loading board(15)Bottom is fixed with the first sliding block(2), the first sliding block(2)With bottom plate(1)Top is slidably connected, the installing plate(15) Bottom is equipped with the first motor(3), the first motor(3)Output shaft pass through shaft coupling and the first threaded rod(14)It is fixedly connected, First threaded rod(14)The other end passes through bearing block and installing plate(15)Top is rotatablely connected, the first threaded rod(14)Outside is arranged There is movable block(16), movable block(16)The second sliding block is fixed on left side wall(17), the second sliding block(17)With installing plate(15)Side Wall is slidably connected, movable block(16)Support plate is fixed on right side wall(7), support plate(7)Top is equipped with the second motor(26), Second motor(26)Output shaft on partial gear is installed(12), partial gear(12)Top is equipped with rack(11), tooth Item(11)With partial gear(12)Engagement, rack(11)Left end is fixed with spring(13), spring(13)The other end is fixed on On fixed board, rack(11)Right end is fixed with movable plate(10), movable plate(10)Bottom is fixed with the 3rd sliding block, the 3rd sliding block and branch Fagging(7)Top is slidably connected, movable plate(10)Top is equipped with suction nozzle(9), suction nozzle(9)On be connected with hose(21), hose (21)The other end and dust catcher(22)Connection, the support plate(7)Right end is fixed with dust and collects shovel(4), movable plate(10)It is right The 3rd motor is installed on side wall(8), the 3rd motor(8)Output shaft pass through shaft coupling and drilling rod(6)It is fixedly connected, institute State installing plate(15)Left side is equipped with guide plate(18), guide plate(18)On be equipped with the second threaded rod(20), the second threaded rod (20)With guide plate(18)It is threadedly coupled, the second threaded rod(20)Right end passes through bearing block and installing plate(15)Rotation connection.
2. wall adjustable drilling aperture apparatus for building according to claim 1, which is characterized in that the idler wheel(25)For certainly Locking-type idler wheel.
3. wall adjustable drilling aperture apparatus for building according to claim 1, which is characterized in that the bottom plate(1)Upper table Left side of face is fixed with instrument cases(23).
4. wall adjustable drilling aperture apparatus for building according to claim 1, which is characterized in that the fixed plate fixes peace Loaded on support plate(7)On.
5. wall adjustable drilling aperture apparatus for building according to claim 1, which is characterized in that the dust catcher(22)Peace Loaded on bottom plate(1)On.
6. wall adjustable drilling aperture apparatus for building according to claim 1, which is characterized in that the dust collects shovel (4)On be fixed with rubber guiding pad(5).
7. wall adjustable drilling aperture apparatus for building according to claim 1, which is characterized in that second threaded rod (20)Left end is fixed with rotational handle(19).
CN201711361423.6A 2017-12-18 2017-12-18 A kind of wall adjustable drilling aperture apparatus for building Pending CN108081476A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711361423.6A CN108081476A (en) 2017-12-18 2017-12-18 A kind of wall adjustable drilling aperture apparatus for building

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711361423.6A CN108081476A (en) 2017-12-18 2017-12-18 A kind of wall adjustable drilling aperture apparatus for building

Publications (1)

Publication Number Publication Date
CN108081476A true CN108081476A (en) 2018-05-29

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108962082A (en) * 2018-08-19 2018-12-07 国胜科技(惠州)有限公司 A bill-board that is used for urban road both sides to have concealed and tests speed snapshot function
CN111622045A (en) * 2020-06-05 2020-09-04 杨琼 Pavement crack repairing method based on steel slag water-stable material
CN111761550A (en) * 2020-06-03 2020-10-13 合肥左心科技有限公司 Electric hammer auxiliary equipment for indoor vertical wall drilling
CN112092211A (en) * 2020-10-31 2020-12-18 周狄超 Wall perforating device is used to fitment

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3811693A (en) * 1972-05-15 1974-05-21 Jacobs Mfg Co Drill chuck
CN205096576U (en) * 2015-11-14 2016-03-23 陈凯康 Self -align electric drill that feeds
CN106738370A (en) * 2016-12-29 2017-05-31 广州市欧树环保科技有限公司 A kind of punching dust collection equipment for building field of environmental protection
CN206393834U (en) * 2017-01-18 2017-08-11 靳晶 A kind of construction prefabricated drilling equipment of cement wall
CN206416339U (en) * 2016-12-14 2017-08-18 包灵芳 One kind is used for metope drilling equipment
CN206562912U (en) * 2017-03-13 2017-10-17 江西理工大学 A kind of civil engineering work positioning rig
CN107269227A (en) * 2017-08-11 2017-10-20 楼炜 A kind of architectural engineering multifunctional hole-drilling machine
CN107336365A (en) * 2017-08-22 2017-11-10 刘庆伟 A kind of dust-proof hole making drill
CN107433344A (en) * 2017-08-31 2017-12-05 陈荣楚 A kind of hand-rail type family expenses drilling equipment
CN207616924U (en) * 2017-12-18 2018-07-17 张文斌 A kind of wall adjustable drilling aperture apparatus for building

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3811693A (en) * 1972-05-15 1974-05-21 Jacobs Mfg Co Drill chuck
CN205096576U (en) * 2015-11-14 2016-03-23 陈凯康 Self -align electric drill that feeds
CN206416339U (en) * 2016-12-14 2017-08-18 包灵芳 One kind is used for metope drilling equipment
CN106738370A (en) * 2016-12-29 2017-05-31 广州市欧树环保科技有限公司 A kind of punching dust collection equipment for building field of environmental protection
CN206393834U (en) * 2017-01-18 2017-08-11 靳晶 A kind of construction prefabricated drilling equipment of cement wall
CN206562912U (en) * 2017-03-13 2017-10-17 江西理工大学 A kind of civil engineering work positioning rig
CN107269227A (en) * 2017-08-11 2017-10-20 楼炜 A kind of architectural engineering multifunctional hole-drilling machine
CN107336365A (en) * 2017-08-22 2017-11-10 刘庆伟 A kind of dust-proof hole making drill
CN107433344A (en) * 2017-08-31 2017-12-05 陈荣楚 A kind of hand-rail type family expenses drilling equipment
CN207616924U (en) * 2017-12-18 2018-07-17 张文斌 A kind of wall adjustable drilling aperture apparatus for building

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
龚明德: "《喷丝头》", 31 March 1978, 纺织工业出版社 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108962082A (en) * 2018-08-19 2018-12-07 国胜科技(惠州)有限公司 A bill-board that is used for urban road both sides to have concealed and tests speed snapshot function
CN108962082B (en) * 2018-08-19 2020-12-01 日照市德衡信息技术有限公司 Billboards with concealed speed measurement and capture function on both sides of urban roads
CN111761550A (en) * 2020-06-03 2020-10-13 合肥左心科技有限公司 Electric hammer auxiliary equipment for indoor vertical wall drilling
CN111622045A (en) * 2020-06-05 2020-09-04 杨琼 Pavement crack repairing method based on steel slag water-stable material
CN112092211A (en) * 2020-10-31 2020-12-18 周狄超 Wall perforating device is used to fitment

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Application publication date: 20180529

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