CN107570757A - A kind of precisely apparatus for controlling of lifting and drilling equipment - Google Patents

A kind of precisely apparatus for controlling of lifting and drilling equipment Download PDF

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Publication number
CN107570757A
CN107570757A CN201710969462.8A CN201710969462A CN107570757A CN 107570757 A CN107570757 A CN 107570757A CN 201710969462 A CN201710969462 A CN 201710969462A CN 107570757 A CN107570757 A CN 107570757A
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CN
China
Prior art keywords
lifting
controlling
base platform
lifting seat
seat
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
CN201710969462.8A
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Chinese (zh)
Inventor
李胜旺
赵飞
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.)
CCCC Fourth Highway Engineering Co Ltd
Original Assignee
CCCC Fourth Highway Engineering 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 CCCC Fourth Highway Engineering Co Ltd filed Critical CCCC Fourth Highway Engineering Co Ltd
Priority to CN201710969462.8A priority Critical patent/CN107570757A/en
Publication of CN107570757A publication Critical patent/CN107570757A/en
Pending legal-status Critical Current

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Abstract

The invention provides a kind of accurate apparatus for controlling of lifting, it is related to engineering construction equipment technical field.The accurate apparatus for controlling of lifting includes pedestal, lifting seat, around the pendulum arm of force;The pedestal includes base platform and supports multiple supporting legs of the base platform, and multiple supporting legs are scalable;The lifting seat is arranged at the base platform by described around the pendulum arm of force, and rotation is described around the pendulum arm of force, and the lifting seat can be relative to the base platform upper and lower translation.The accurate apparatus for controlling of lifting of the present invention, base platform and multiple supporting legs are provided with pedestal, and base platform can pass through multiple telescopic supporting leg oscilaltions, and lifting seat can be relative to base platform upper and lower translation, therefore the accurate lifting positioning of lifting seat can be realized by adjusting base platform and lifting seat.On this basis, present invention also offers a kind of drilling equipment.

Description

A kind of precisely apparatus for controlling of lifting and drilling equipment
Technical field
The present invention relates to engineering construction equipment technical field, more particularly to a kind of precisely apparatus for controlling of lifting and drilling dress Put.
Background technology
In modernization project construction, anchor technology is with its working security height, good reliability, construction equipment after bar planting The advantages of simple, has obtained the extensive use of people, more common especially in concrete structure reinforcement project.By engineering It was verified that this technology is a theory novelty, the form of construction work of advanced technology in engineering construction field.
After the bar planting of building structure in anchor technology work progress, it is often necessary to which reinforced concrete structure is drilled. And when entering the construction of cross girders subdrilling hole, workmen needs electric hand drill, stands on double ladder, job execution of facing upward.
Above-mentioned beam bottom boring method difficulty of construction is big, labor intensity is big, because workmen need to stand in people in work progress The upper electric hand tool of word ladder is constructed, and hazards are more, the hidden danger for the accidents such as fall, get an electric shock be present.And face upward and apply The dust that man-hour descends slowly and lightly is more, has certain influence to the eye health of workmen.In addition, anchor technology is for pore-forming after bar planting Depth there are certain requirements, and it is hand-manipulated when without metering measure, depth of pore forming error is larger.
The content of the invention
It is of the prior art to solve it is an object of the invention to provide a kind of precisely apparatus for controlling of lifting and drilling equipment The technical problem such as existing construction safety, bore error when anchor is constructed after bar planting.
To achieve these goals, the present invention uses following technical scheme:
A kind of accurate apparatus for controlling of lifting provided by the invention, including pedestal, lifting seat, around pendulum the arm of force;The pedestal bag Include base platform and support multiple supporting legs of the base platform, multiple supporting legs are scalable;The lifting seat passes through described The base platform is arranged at around the pendulum arm of force, rotation is described around the pendulum arm of force, and the lifting seat can be relative to the base platform Upper and lower translation.
Further, described that pendulum arm of force one end is provided with control-rod, the other end is provided with two connecting rods being parallel to each other; The front end of two connecting rods is hinged with the lifting seat respectively, and the middle part of two connecting rods is cut with scissors with the pedestal respectively Connect, make the line parallelogram of four pin joints.The technical scheme has technical effect that:Trip-over lever, it can drive Connecting rod changes the position of lifting seat, and due to the line parallelogram of two connecting rods, four pin joints, therefore lifting seat It can be moved parallel to relative to pedestal.
Further, the lifting seat includes elevating lever and fixed seat;The front end of two connecting rods is respectively articulated with described Elevating lever, the fixed seat are arranged at the elevating lever, the upper surface of the fixed seat is horizontal.The technical scheme Have technical effect that:The front end of connecting rod is respectively articulated with elevating lever, and fixed seat is arranged at elevating lever, i.e., is driven by elevating lever solid Reservation moves in parallel;And be horizontally disposed with the upper surface of fixed seat, it is easily installed other construction tools and enters the operation of cross girders bottom.
Further, in addition to installation buckle;The elevating lever and the fixed seat are provided with the installation buckle.The skill Art scheme has technical effect that:Installation card button is separately positioned on elevating lever and fixed seat, enhances elevating lever and fixed seat Between tightness, also, installation card discount interest is in being fixedly mounted a variety of construction tools.
Further, in addition to multiple rollers;The lower end of any one supporting leg is provided with the roller.The technical scheme Have technical effect that:Roller is easy to movement of the pedestal on ground, lifts the efficiency of construction of accurate apparatus for controlling of lifting, facilitates Whole device is carried out back and forth between different construction sites.
Further, the roller is can locking roller.The technical scheme has technical effect that:When accurate elevating control fills Put when needing the fixed position to be constructed, by roller locking, can further improve construction precision.
Further, in addition to cushion pad;The cushion pad is arranged at the upper surface of the base platform, described for avoiding Lifting seat directly hits with the pedestal.The technical scheme has technical effect that:During due to trip-over lever, lifting seat is back and forth Translation, the collision of lifting seat and pedestal support is easily caused when close to pedestal, using cushion pad, can avoid hitting, and is mitigated Vibrations, and then improve efficiency of construction, extend the service life of accurate apparatus for controlling of lifting.
Further, the supporting leg includes pipe sleeve and extension, and the pipe sleeve is socketed the extension.The skill of the technical scheme Art effect is:Extension is axially scalable in pipe sleeve, for lifting and decentralization base platform.
The present invention also provides a kind of drilling equipment, including electric drill and above-mentioned accurate apparatus for controlling of lifting;The electric drill It is fixedly installed on the lifting seat, the drill bit of the electric drill is straight up.
Further, the electric drill is removably mounted to the accurate apparatus for controlling of lifting.The technique effect of the technical scheme It is:Electric drill is detachably installed, and can implement drilling according to the suitable electric drill of selection specification is actually needed.
The beneficial effects of the invention are as follows:
1st, the pedestal of accurate apparatus for controlling of lifting is provided with base platform and multiple supporting legs, and base platform can be by multiple Telescopic supporting leg oscilaltion, and lifting seat can be relative to base platform upper and lower translation, therefore can be put down by adjusting pedestal Platform and lifting seat, realize the accurate lifting positioning of lifting seat.
2nd, drilling equipment installs electric drill on the lifting seat of accurate apparatus for controlling of lifting, and by the drill bit of electric drill straight up Set, facilitate workmen's terrestrial operation electric drill, reduce labor intensity significantly, reduce potential safety hazard, while measurable pore-forming Depth, ensure hole quality, greatly improve operating efficiency.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the specific embodiment of the invention, embodiment will be described below In the required accompanying drawing used be briefly described.It should be evident that drawings in the following description are some implementations of the present invention Mode, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings Obtain other accompanying drawings.
Fig. 1 is the structural representation of precisely apparatus for controlling of lifting provided in an embodiment of the present invention;
Fig. 2 is the partial enlarged drawing at I in Fig. 1;
Fig. 3 is the structural representation of drilling equipment provided in an embodiment of the present invention (when lifting seat is fallen);
Fig. 4 is the structural representation of drilling equipment provided in an embodiment of the present invention (when lifting seat lifts).
Reference:
1- pedestals;2- lifting seats;3- is around the pendulum arm of force;
4- base platforms;5- supporting legs;6- control-rods;
7- connecting rods;8- elevating levers;9- fixed seats;
10- installs buckle;11- rollers;12- cushion pads;
13- pipe sleeves;14- extensions;15- electric drills.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation Example is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ", The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to Be easy to the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation, With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ", " the 3rd " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected;Can To be mechanical connection or electrical connection;Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this Concrete meaning in invention.
DESCRIPTION OF THE PRIOR ART:
In modernization project construction, anchor technology is with its working security height, good reliability, construction equipment after bar planting The advantages of simple, has obtained the extensive use of people, more common especially in concrete structure reinforcement project.By engineering It was verified that this technology is a theory novelty, the form of construction work of advanced technology in engineering construction field.
After the bar planting of building structure in anchor technology work progress, it is often necessary to which reinforced concrete structure is drilled. And when entering the construction of cross girders subdrilling hole, workmen needs electric hand drill 15, stands on double ladder, job execution of facing upward.
Above-mentioned beam bottom boring method difficulty of construction is big, labor intensity is big, because workmen need to stand in people in work progress The upper electric hand tool of word ladder is constructed, and hazards are more, the hidden danger for the accidents such as fall, get an electric shock be present.And face upward and apply The dust that man-hour descends slowly and lightly is more, has certain influence to the eye health of workmen.In addition, anchor technology is for pore-forming after bar planting Depth there are certain requirements, and it is hand-manipulated when without metering measure, depth of pore forming error is larger.
The specific embodiment of the invention:
A kind of accurate apparatus for controlling of lifting is present embodiments provided, wherein:Fig. 1 precisely rises to be provided in an embodiment of the present invention The structural representation of control device drops.As shown in figure 1, precisely apparatus for controlling of lifting includes pedestal 1, lifting seat 2, around the pendulum arm of force 3. Specifically, pedestal 1 includes base platform 4 and supports multiple supporting legs 5 of the base platform 4, also, multiple supporting legs 5 are scalable. Lifting seat 2 is rotated around the arm of force 3 is put, then lifting seat 2 can be put down relative to pedestal by being arranged at around the pendulum arm of force 3 in base platform 4 The upper and lower translation of platform 4.During construction, base platform 4 and lifting seat 2 are adjusted respectively, and the accurate lifting positioning of lifting seat 2 can be achieved.
On the basis of above-described embodiment, further, as shown in figure 1, one end of the pendulum arm of force 3 is provided with control-rod 6, The other end is provided with two connecting rods being parallel to each other 7, and specifically, the front end of two connecting rods 7 is be hinged with lifting seat 2 respectively, The middle part of two connecting rods 7 is be hinged with pedestal 1 respectively, makes the line parallelogram of four pin joints.In the present embodiment, By trip-over lever 6, connecting rod 7 can be driven to change the position of lifting seat 2, and due to two connecting rods, 7 four pin joints Line parallelogram, therefore lifting seat 2 can be moved parallel to relative to pedestal 1.
On the basis of above-described embodiment, further, as shown in figure 1, lifting seat 2 includes elevating lever 8 and fixed seat 9. Specifically, the front end of two connecting rods 7 is respectively articulated with elevating lever 8, and fixed seat 9 is arranged on elevating lever 8, makes the upper of fixed seat 9 Surface is horizontal.In the present embodiment, the front end of connecting rod 7 is respectively articulated with elevating lever 8, and fixed seat 9 is arranged at elevating lever 8, i.e., drive fixed seat 9 to move in parallel by elevating lever 8;And be horizontally disposed with the upper surface of fixed seat 9, it is easily installed other apply Work instrument enters the operation of cross girders bottom.
On the basis of above-described embodiment, further, as shown in figure 1, precisely apparatus for controlling of lifting is additionally provided with installation Buckle 10, elevating lever 8 and fixed seat 9 are provided with installation buckle 10.In the present embodiment, installation buckle 10 is separately positioned on liter Drop in bar 8 and fixed seat 9, enhance the tightness between elevating lever 8 and fixed seat 9, also, buckle 10 is installed and is beneficial to fix A variety of construction tools are installed.
On the basis of above-described embodiment, further, as shown in figure 1, precisely apparatus for controlling of lifting be additionally provided with it is multiple Roller 11;The lower end of any one supporting leg 5 is provided with the roller 11.In the present embodiment, roller 11 is easy to pedestal 1 on ground It is mobile, the efficiency of construction of accurate apparatus for controlling of lifting is lifted, whole device is facilitated and carries out back and forth between different construction sites.
On the basis of above-described embodiment, distinguishingly, as shown in figure 1, the preferred installation of roller 11 can locking roller 11.Work as essence When quasi- apparatus for controlling of lifting needs the fixed position to be constructed, by the locking of roller 11, construction precision can further improve.
On the basis of above-described embodiment, further, as shown in figure 1, precisely apparatus for controlling of lifting is additionally provided with buffering Pad 12, the cushion pad 12 are arranged at the upper surface of base platform 4, for avoiding lifting seat 2 from directly being hit with the pedestal 1. In the present embodiment, during due to trip-over lever 6, lifting seat 2 is translated back and forth, and lifting seat 2 and base are easily caused when close to pedestal 1 It the collision of the support of frame 1, using cushion pad 12, can avoid hitting, mitigate vibrations, and then improve efficiency of construction, extend accurate rise The service life of control device drops.
Fig. 2 is the partial enlarged drawing at I in Fig. 1.On the basis of above-described embodiment, further, as shown in Fig. 2 branch Leg 5 includes pipe sleeve 13 and extension 14, wherein, pipe sleeve 13 is socketed extension 14.In the present embodiment, extension 14 is in pipe sleeve 13 Middle axial direction is scalable, for lifting and decentralization base platform 4.
The present invention also provides a kind of drilling equipment, wherein:Fig. 3 is drilling equipment provided in an embodiment of the present invention (lifting seat 2 When falling) structural representation;Fig. 4 is the structural representation of drilling equipment provided in an embodiment of the present invention (when lifting seat 2 lifts) Figure.As shown in Figure 3,4, the drilling equipment that the present embodiment provides, including electric drill 15 and above-mentioned accurate apparatus for controlling of lifting.Its In, electric drill 15 is fixedly installed on lifting seat 2, makes the drill bit of electric drill 15 straight up.
On the basis of above-described embodiment, further, as shown in Figure 3,4, electric drill 15 is removably mounted to precisely lift Control device.In the present embodiment, electric drill 15 is detachably installed, can be real according to the suitable electric drill 15 of selection specification is actually needed Apply drilling.
According to above-mentioned design and practical construction experience, complete, refinement the technical scheme of drilling equipment is as follows:
1st, the base platform 4 of pedestal 1 is made of steel plate, in equilateral triangle;The quantity of supporting leg 5 is arranged to three, often A piece supporting leg 5 combines by pipe sleeve 13 and extension 14, and pipe sleeve 13 and extension 14 use zinc-plated square steel pipe, avoid propping up Leg 5 itself circumferentially rotates, and make base platform 4 adjustment height range set be 0.8 meter to 1.8 meters.Wherein, supporting leg 5 can It is vertical with the lower surface of base platform 4, can also be in certain angle of inclination, and solderable reinforcement is with fixed supporting leg 5 Setting angle.In addition, optionally, supporting leg 5 may be arranged as folding straight-bar, base platform 4 is set to obtain quickly , the lifting of specific range.
2nd, in order that lifting seat 2 can vertically oscilaltion, pedestal piece vertical fixation of 1 upper surface screwed connection Bar, and the elevating lever 8 of lifting seat 2 is same with fix bar vertically-mounted, and elevating lever 8 uses square steel tube with fix bar, to carry The be hinged installation reliability of height.Meanwhile be hinged bearing uses cast iron bearing.Weave control bar 6, lifting seat 2 is set to have up and down The adjustable range of 1.5 meters of lifting.Therefore electric drill 15 can carry out 2 meters to 3.5 meters height faces upward bore operation.
In summary, accurate apparatus for controlling of lifting and drilling equipment can solve the problem that prior art construction and the existing plant of equipment The technical problem such as existing construction safety, bore error when anchor is constructed after muscle:
1st, the pedestal 1 of accurate apparatus for controlling of lifting is provided with base platform 4 and multiple supporting legs 5, and base platform 4 can pass through Multiple oscilaltions of telescopic supporting leg 5, and lifting seat 2 can be relative to the upper and lower translation of base platform 4, therefore regulation can be passed through Base platform 4 and lifting seat 2, realize the accurate lifting positioning of lifting seat 2.
2nd, drilling equipment installs electric drill 15 on the lifting seat 2 of accurate apparatus for controlling of lifting, and the drill bit of electric drill 15 is erected Directly set up, facilitate workmen's terrestrial operation electric drill 15, reduce labor intensity significantly, reduce potential safety hazard, while can Depth of pore forming is measured, ensures hole quality, greatly improves operating efficiency.
Finally it should be noted that:Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations;To the greatest extent The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that:Its according to The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered Row equivalent substitution;And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology The scope of scheme.

Claims (10)

1. a kind of accurate apparatus for controlling of lifting, it is characterised in that including pedestal, lifting seat, around the pendulum arm of force;
The pedestal includes base platform and supports multiple supporting legs of the base platform, and multiple supporting legs are scalable;
The lifting seat is arranged at the base platform by described around the pendulum arm of force, rotates described around the pendulum arm of force, the lifting seat Can be relative to the base platform upper and lower translation.
2. accurate apparatus for controlling of lifting according to claim 1, it is characterised in that described that pendulum arm of force one end is provided with control Bar processed, the other end are provided with two connecting rods being parallel to each other;Cut with scissors respectively with the lifting seat front end of two connecting rods Connect, the middle part of two connecting rods is hinged with the pedestal respectively, makes the line parallelogram of four pin joints.
3. accurate apparatus for controlling of lifting according to claim 2, it is characterised in that the lifting seat is including elevating lever and admittedly Reservation;The front end of two connecting rods is respectively articulated with the elevating lever, and the fixed seat is arranged at the elevating lever, makes described The upper surface of fixed seat is horizontally disposed with.
4. accurate apparatus for controlling of lifting according to claim 3, it is characterised in that also include installation buckle;The lifting Bar and the fixed seat are provided with the installation buckle.
5. the accurate apparatus for controlling of lifting according to any one of Claims 1 to 4, it is characterised in that also including multiple rollers; The lower end of any one supporting leg is provided with the roller.
6. accurate apparatus for controlling of lifting according to claim 5, it is characterised in that the roller is can locking roller.
7. the accurate apparatus for controlling of lifting according to any one of Claims 1 to 4, it is characterised in that also including cushion pad;Institute The upper surface that cushion pad is arranged at the base platform is stated, for avoiding the lifting seat from directly being hit with the pedestal.
8. the accurate apparatus for controlling of lifting according to any one of Claims 1 to 4, it is characterised in that the supporting leg includes pipe Set and extension, the pipe sleeve are socketed the extension.
A kind of 9. drilling equipment, it is characterised in that the accurate lifting including electric drill and as described in any one of claim 1~8 Control device;The electric drill is fixedly installed on the lifting seat, and the drill bit of the electric drill is straight up.
10. drilling equipment according to claim 9, it is characterised in that the electric drill is removably mounted to the precisely liter Control device drops.
CN201710969462.8A 2017-10-18 2017-10-18 A kind of precisely apparatus for controlling of lifting and drilling equipment Pending CN107570757A (en)

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CN201710969462.8A CN107570757A (en) 2017-10-18 2017-10-18 A kind of precisely apparatus for controlling of lifting and drilling equipment

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Application Number Priority Date Filing Date Title
CN201710969462.8A CN107570757A (en) 2017-10-18 2017-10-18 A kind of precisely apparatus for controlling of lifting and drilling equipment

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109352030A (en) * 2018-10-17 2019-02-19 李翔年 A kind of furred ceiling auxiliary punch device for building
CN109909525A (en) * 2019-03-29 2019-06-21 刘福林 A kind of ceiling punch
CN110405253A (en) * 2019-09-03 2019-11-05 中国建筑土木建设有限公司 A kind of vertical bar planting is accurately positioned drilling equipment and its construction method
CN111151878A (en) * 2020-03-18 2020-05-15 王军 Square tube welding equipment

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US5137235A (en) * 1990-08-29 1992-08-11 U-Haul International, Inc. Inverted angle drill
US20070170672A1 (en) * 2004-08-31 2007-07-26 Young Roland O Storage apparatus
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
CN104776301A (en) * 2015-03-27 2015-07-15 苏州华徕光电仪器有限公司 Stable tripod
CN204603376U (en) * 2015-04-20 2015-09-02 上海中测行工程检测咨询有限公司 A kind of electric drill lifting support for floor boring
CN204621156U (en) * 2015-05-09 2015-09-09 国网山东省电力公司潍坊供电公司 A kind of arm extending type percussion drill
CN207447418U (en) * 2017-10-18 2018-06-05 中交第四公路工程局有限公司 A kind of accurate apparatus for controlling of lifting and drilling equipment

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5137235A (en) * 1990-08-29 1992-08-11 U-Haul International, Inc. Inverted angle drill
US20070170672A1 (en) * 2004-08-31 2007-07-26 Young Roland O Storage apparatus
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
CN104776301A (en) * 2015-03-27 2015-07-15 苏州华徕光电仪器有限公司 Stable tripod
CN204603376U (en) * 2015-04-20 2015-09-02 上海中测行工程检测咨询有限公司 A kind of electric drill lifting support for floor boring
CN204621156U (en) * 2015-05-09 2015-09-09 国网山东省电力公司潍坊供电公司 A kind of arm extending type percussion drill
CN207447418U (en) * 2017-10-18 2018-06-05 中交第四公路工程局有限公司 A kind of accurate apparatus for controlling of lifting and drilling equipment

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109352030A (en) * 2018-10-17 2019-02-19 李翔年 A kind of furred ceiling auxiliary punch device for building
CN109909525A (en) * 2019-03-29 2019-06-21 刘福林 A kind of ceiling punch
CN109909525B (en) * 2019-03-29 2020-05-08 王毓杨 Ceiling hole puncher
CN110405253A (en) * 2019-09-03 2019-11-05 中国建筑土木建设有限公司 A kind of vertical bar planting is accurately positioned drilling equipment and its construction method
CN111151878A (en) * 2020-03-18 2020-05-15 王军 Square tube welding equipment
CN111151878B (en) * 2020-03-18 2021-11-12 浙江双森金属科技股份有限公司 Square tube welding equipment

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