CN107288541A - A kind of municipal works detection concrete road surface boring and coring device - Google Patents

A kind of municipal works detection concrete road surface boring and coring device Download PDF

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Publication number
CN107288541A
CN107288541A CN201710618700.0A CN201710618700A CN107288541A CN 107288541 A CN107288541 A CN 107288541A CN 201710618700 A CN201710618700 A CN 201710618700A CN 107288541 A CN107288541 A CN 107288541A
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CN
China
Prior art keywords
coring
road surface
concrete road
municipal works
rod
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CN201710618700.0A
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Chinese (zh)
Inventor
吴佳锋
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Individual
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Individual
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Priority to CN201710618700.0A priority Critical patent/CN107288541A/en
Publication of CN107288541A publication Critical patent/CN107288541A/en
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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B15/00Supports for the drilling machine, e.g. derricks or masts
    • E21B15/003Supports for the drilling machine, e.g. derricks or masts adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B25/00Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/02Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/18Drilling by liquid or gas jets, with or without entrained pellets

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

The invention discloses a kind of municipal works detection concrete road surface boring and coring device, including support base, support base lower end both sides are connected with lowering or hoisting gear, diversion cylinder is connected with the left of support base upper end, vertical rod is connected with the left of diversion cylinder upper end, cross bar is connected with the right side of vertical rod upper end, motor is connected with the right side of cross bar lower end, motor lower end is connected with drive shaft, drive shaft lower end is connected with driving pulley, driving pulley left end is connected with driven pulley, power transmission shaft is connected with the middle part of driven pulley, power transmission shaft upper center is connected with cam, the contact of cam left end is connected with roller, roller left end is connected with guide rod, guide rod left end is connected with guide pad, power transmission shaft lower end is connected with shaft coupling, shaft coupling lower end is connected with quill shaft.The present invention so that water is also constantly sprayed during coring tube rotary coring, the cooling to coring tube had both been realized, while the dust produced in location of the coring procedure is also reduced, it is practical.

Description

A kind of municipal works detection concrete road surface boring and coring device
Technical field
The present invention relates to municipal detection device technical field, specifically a kind of municipal works detection is drilled with concrete road surface Coring device.
Background technology
Municipal works refer to urban operating mechanism construction project.In China, urban operating mechanism refers to build in metropolitan district, town (township) planning If being set in scope, based on government responsibility and the voluntary various buildings that paid or free public product and service are provided for resident Thing, structures, equipment etc..The supporting various public infrastructure developments of urban life belong to municipal works category, than as usual The urban road seen, bridge, subway, such as the various pipelines being closely related with life:Rainwater, sewage, upper water, reclaimed water, electric power (red line is with outer portion), telecommunications, heating power, combustion gas etc., also square, the construction of urban afforestation etc. belongs to municipal works category.
It is excellent that there is asphalt concrete pavement surfacing seamless, driving to vibrate fast, the maintenance simplicity of small, open to traffic etc. Point, is widely used in different grades of highway construction.In bituminous paving laying construction, compactness is to evaluate bituminous highway The important indicator of pavement quality, and core drilling method is the important method for detecting compactness of pavement, for evaluating the construction of asphalt surface course Compactness.The core diameter taken generally 100mm, requires to drill through at one per 200m, core strength is very during final acceptance of construction It is huge.
Concrete hole drilling core taking machine general at present is only provided with a counter weight base and a lifting motor column, in reality In the operation of border, drill bit is caused to carry out core boring sampling to concrete road surface by lifting motor column.Existing concrete road surface takes Core apparatus is mostly simple in construction, and it is higher often to produce coring bit temperature in location of the coring procedure, and burns the production of drill bit phenomenon It is raw, it drastically influence the core detection progress of our concrete road surfaces, poor practicability.
The content of the invention
It is an object of the invention to provide a kind of municipal works detection concrete road surface boring and coring device, with solution State the problem of being proposed in background technology.
To achieve the above object, the present invention provides following technical scheme:
A kind of municipal works detection concrete road surface boring and coring device, including support base, the support base lower end two Side is connected with lowering or hoisting gear, and lowering or hoisting gear includes being provided with lower end in the middle part of screw rod, screw rod inside fixed cylinder, the fixed cylinder and is connected with Swing pinion, swing pinion lower end is engaged with the middle part of drive gear, drive gear and is connected with drive shaft, and drive shaft is connected with driving Rotating disk, the screw rod upper end, which is connected with to be connected with the left of diversion cylinder, diversion cylinder upper end on the left of lifting column, the support base upper end, to be connected It is connected on the right side of vertical rod, vertical rod upper end and is connected with cross bar, motor is connected with the right side of the cross bar lower end, motor lower end connects Drive shaft is connected to, drive shaft lower end is connected with driving pulley, and driving pulley left end, which is connected with the middle part of driven pulley, driven pulley, to be connected Power transmission shaft is connected to, power transmission shaft upper center is connected with cam, and the contact of cam left end is connected with roller, and roller left end is connected with guiding Bar, guide rod left end is connected with the left of guide pad, guide pad lower end in contact and is connected with pulley, and pulley lower end is connected with elevating lever, Elevating lever lower end is connected with the middle part of lifter plate, lifter plate lower end and is connected with piston rod, and piston-rod lower end is connected with extrusion piston, institute State power transmission shaft lower end and be connected with shaft coupling, shaft coupling lower end is connected with outside in the middle part of quill shaft, quill shaft and is provided with hydroecium, it is described in Empty axle bottom is connected with the right side of coring tube, the support base upper end and is connected with batteries, and support base right-hand member is connected with control-rod.
It is used as further scheme of the invention:The lowering or hoisting gear lower end is connected with cushion pad, and cushion pad lower end is connected with Road wheel.
It is used as further scheme of the invention:The driving rotating disk right-hand member is connected with driving handle.
It is used as further scheme of the invention:The lifting column lower end outside is provided with stop collar, stop collar bottom and lifting The first spring is cased with the outside of screw rod between post.
It is used as further scheme of the invention:The diversion cylinder left end is connected with water inlet pipe, be connected with the middle part of water inlet pipe into Water one-way valve, the water inlet pipe end is connected with water supply connector, and the diversion cylinder right-hand member, which is connected with the middle part of outlet pipe, outlet pipe, to be connected Water one-way valve is connected to out, the water outlet pipe end is connected with hydroecium.
It is used as further scheme of the invention:Limbers, the water are uniformly provided with the outside of quill shaft inside the hydroecium Room left end is connected with fixed plate, and fixed plate left end is connected with support frame, and support frame upper center is provided with to cooperate with guide rod Pilot hole.
It is used as further scheme of the invention:The second bullet is connected with the outside of guide rod between the guide pad and support frame Spring.
It is used as further scheme of the invention:The 3rd bullet is connected with the outside of piston rod between the lifter plate and diversion cylinder Spring.
It is used as further scheme of the invention:The batteries are provided with electric-quantity display device.
It is used as further scheme of the invention:The coring tube bottom has certain taper.
Compared with prior art, the beneficial effects of the invention are as follows:
A kind of municipal works detection concrete road surface boring and coring device, it is rational in infrastructure, it is novel in design, by setting The mutual cooperation of some diversion cylinder and hydroecium so that water is also constantly sprayed during coring tube rotary coring, was both realized Cooling to coring tube, improves the coring quality of whole coring device, while the dust produced in location of the coring procedure is also reduced, It ensure that coring personnel's is healthy, meet the core detection needs of municipal concrete road surface, it is practical.
Brief description of the drawings
Fig. 1 is a kind of structural representation of municipal works detection concrete road surface boring and coring device.
Fig. 2 is the connection knot of coring tube and middle control axle in a kind of municipal works detection concrete road surface boring and coring device Structure schematic diagram.
Fig. 3 is a kind of structural representation of lowering or hoisting gear in municipal works detection concrete road surface boring and coring device.
Embodiment
It should be noted that in the case where not conflicting, the embodiment in the present invention and the feature in embodiment can phases Mutually combination.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ", The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than indicate or dark Specific orientation must be had, with specific azimuth configuration and operation by showing the device or element of meaning, therefore it is not intended that right The limitation of the present invention.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicating or implying phase To importance or the implicit quantity for indicating indicated technical characteristic.Thus, the feature for defining " first ", " second " etc. can To express or implicitly include one or more this feature.In the description of the invention, unless otherwise indicated, " multiple " It is meant that two or more.
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 to by intermediary, Ke Yishi The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition Concrete meaning in the present invention.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Refering to Fig. 1~3, in the embodiment of the present invention, a kind of municipal works detection concrete road surface boring and coring device, bag Support base 1 is included, the lower end both sides of support base 1 are connected with lowering or hoisting gear 38, and the lower end of lowering or hoisting gear 38 is connected with cushion pad 28, rocking of being produced in whole device moving process is reduced, the lower end of cushion pad 28 is connected with road wheel 27, whole for realizing The movement of individual device, the lowering or hoisting gear 38 includes fixed cylinder 381, and the inside of fixed cylinder 381 is provided with screw rod 383, screw rod 383 Middle part lower end is connected with swing pinion 382, and the lower end of swing pinion 382 is engaged with drive gear 384, and the middle part of drive gear 384 connects Drive shaft 385 is connected to, drive shaft 385 is connected with driving rotating disk 387, and the right-hand member of driving rotating disk 387 is connected with driving handle 386, used In driving driving rotating disk 387 to be rotated, the upper end of screw rod 383 is connected with lifting column 389, and the middle part of lifting column 389 is set There is the screwed hole cooperated with screw rod 383, so that by the linear motion that the transform linear motion of screw rod 383 is lifting column 389, So as to realize the change of whole device height, the lower end outside of lifting column 389 is provided with stop collar 380, the bottom of stop collar 380 The outside of screw rod 383 between lifting column 389 is cased with the first spring 388, for limiting moving up and down for lifting column 389 Diversion cylinder 5 is connected with the left of position, the upper end of support base 1, the left end of diversion cylinder 5 is connected with water inlet pipe 3, the middle part of water inlet pipe 3 Water feeding one-way valve 2 is connected with, the end of water inlet pipe 3 is connected with water supply connector 4, and the right-hand member of diversion cylinder 5 is connected with outlet pipe 36, the middle part of outlet pipe 36 is connected with out water one-way valve 37, so that the water in diversion cylinder 5 can only be entered by outlet pipe 36 In hydroecium 30, the outside of quill shaft 39 that the end of outlet pipe 36 is connected with inside hydroecium 30, the hydroecium 30 is uniformly provided with logical Water hole 29, for the water in hydroecium 30 to be entered in quill shaft 29, the left end of hydroecium 30 is connected with fixed plate 32, fixed plate 32 left ends are connected with support frame 34, and the outside of guide rod 15 between the guide pad 13 and support frame 34 is connected with second spring 14, for realizing reset response to moving left and right for guide pad 13, the upper center of support frame as described above 34 is provided with and guide rod 33 It is connected with the left of the pilot hole 33 of mutual cooperation, the upper end of diversion cylinder 5 on the right side of vertical rod 12, the upper end of vertical rod 12 and is connected with cross bar 17, the lower end of cross bar 17 right side is connected with motor 21, and the lower end of motor 21 is connected with drive shaft 22, drive shaft 22 End is connected with driving pulley 23, and the left end of driving pulley 23 is connected with driven pulley 20, and the middle part of driven pulley 20 is connected with power transmission shaft 19, the upper center of power transmission shaft 19 is connected with cam 18, and the contact of the left end of cam 18 is connected with roller 16, and the left end of roller 16, which is connected with, leads To bar 15, the left end of guide rod 15 is connected with guide pad 13, and the lower end in contact in the left side of guide pad 13 is connected with pulley 11, the lower end of pulley 11 Elevating lever 10 is connected with, the lower end of elevating lever 10 is connected with outside lifter plate 9, the piston rod 7 between the lifter plate 9 and diversion cylinder 5 Side is connected with the 3rd spring 8, for being connected with work in the middle part of carry out reset response, the lower end of lifter plate 9 to moving up and down for piston rod 7 Stopper rod 7, the lower end of piston rod 7 is connected with extrusion piston 6, and the lower end of power transmission shaft 19 is connected with shaft coupling 31, the lower end of shaft coupling 31 Quill shaft 39 is connected with, the middle part of quill shaft 39 outside is provided with hydroecium 30, and the bottom of quill shaft 39 is connected with coring tube 35, described The bottom of coring tube 35 has certain taper, so as to increase coring efficiency so that coring tube 35 is easier to inject concrete road In face, batteries 26 are connected with the right side of the upper end of support base 1, the batteries 26 are provided with electric-quantity display device 24, use In observation batteries 26 in dump energy how much, so as to remind people to charge in time, the right-hand member of support base 1 is connected with control-rod 25。
A kind of municipal works detection concrete road surface boring and coring device, in use, will be whole by control-rod 25 Required for individual device is moved on the concrete road surface of sampling, start motor 21 afterwards, motor 21 drives drive shaft 22 are rotated, and then by the effect of driving pulley 23 and driven pulley 20 power transmission shaft 19 are rotated, in 19 turns of power transmission shaft During dynamic, on the one hand band moving cam 18 is rotated so that guide rod 15 drives guide pad 13 to move left and right, and then to rise Drop bar 10 drives piston rod 7 to move up and down, and then piston rod 7 is moved up and down with piston 6 along the inwall of diversion cylinder 5, real Show the extraction to water, then introduced the water into by the effect of outlet pipe 36 in hydroecium 30, in the rotation process of power transmission shaft 19, On the other hand quill shaft 39 is driven to be rotated so that coring tube 35 is rotated, so that mistake of the coring tube 35 in rotation Water is also sprayed inside Cheng Zhong, coring tube 35, the efficient coring to concrete road surface is realized, in the process, is filled by lifting Put 38 and realize the change to the upper-lower height of coring tube 35, simple to operate, reliability is high.The present invention, rational in infrastructure, design is new Grain husk, by provided with diversion cylinder 5 and hydroecium 30 mutual cooperation so that during the rotary coring of coring tube 35 also constantly spray Water outlet, had both realized the cooling to coring tube 35, improved the coring quality of whole coring device, while also reducing coring mistake The dust produced in journey, it is ensured that coring personnel's is healthy, meets the core detection needs of municipal concrete road surface, real It is strong with property.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.

Claims (7)

1. a kind of municipal works detection concrete road surface boring and coring device, including support base (1), it is characterised in that described Support base (1) lower end both sides are connected with lowering or hoisting gear (38), and lowering or hoisting gear (38) includes fixed cylinder (381), the fixed cylinder (381) internal to be provided with screw rod (383), screw rod (383) middle part lower end is connected with swing pinion (382), swing pinion (382) lower end It is engaged with the middle part of drive gear (384), drive gear (384) and is connected with drive shaft (385), drive shaft (385) is connected with driving Rotating disk (387), driving rotating disk (387) right-hand member is connected with driving handle (386), and screw rod (383) upper end is connected with lifting column (389), lifting column (389) lower end outside is provided with stop collar (380), between stop collar (380) bottom and lifting column (389) Screw rod (383) on the outside of be cased with the first spring (388), lowering or hoisting gear (38) lower end is connected with cushion pad (28), cushion pad (28) lower end, which is connected with the left of road wheel (27), support base (1) upper end, is connected with diversion cylinder (5), and diversion cylinder (5) upper end is left Side, which is connected with the right side of vertical rod (12), vertical rod (12) upper end, is connected with cross bar (17), and drive is connected with the right side of cross bar (17) lower end Dynamic motor (21), motor (21) lower end is connected with drive shaft (22), and drive shaft (22) lower end is connected with driving pulley (23), Driving pulley (23) left end is connected with the middle part of driven pulley (20), driven pulley (20) and is connected with power transmission shaft (19), power transmission shaft (19) upper center is connected with cam (18), and the contact of cam (18) left end is connected with roller (16), and roller (16) left end is connected with Guide rod (15), guide rod (15) left end is connected with the left of guide pad 13 (), guide pad (13) lower end in contact and is connected with pulley (11), pulley (11) lower end is connected with elevating lever (10), and elevating lever (10) lower end is connected with lifter plate (9), lifter plate (9) lower end Middle part is connected with piston rod (7), and piston rod (7) lower end is connected with extrusion piston (6), and power transmission shaft (19) lower end is connected with connection Axle device (31), shaft coupling (31) lower end is connected with quill shaft (39), and outside is provided with hydroecium (30) in the middle part of quill shaft (39), it is described in Empty axle (39) bottom is connected with the right side of coring tube (35), support base (1) upper end and is connected with batteries (26), support base (1) right-hand member is connected with control-rod (25).
2. a kind of municipal works detection concrete road surface boring and coring device according to claim 1, it is characterised in that Diversion cylinder (5) left end is connected with the middle part of water inlet pipe (3), water inlet pipe (3) and is connected with water feeding one-way valve (2), the water inlet pipe (3) end is connected with water supply connector (4), and diversion cylinder (5) right-hand member is connected with the middle part of outlet pipe (36), outlet pipe (36) and connected There is water one-way valve (37), outlet pipe (36) end is connected with hydroecium (30).
3. a kind of municipal works detection concrete road surface boring and coring device according to claim 1, it is characterised in that Limbers (29) is uniformly provided with the outside of the internal quill shaft (39) of the hydroecium (30), hydroecium (30) left end is connected with fixation Plate (32), fixed plate (32) left end is connected with support frame (34), and support frame (34) upper center is provided with guide rod (33) mutually The pilot hole (33) of cooperation.
4. a kind of municipal works detection concrete road surface boring and coring device according to claim 1 and 3, its feature exists In (15 outsides are connected with second spring (14) to the guide rod between the guide pad (13) and support frame (34).
5. a kind of municipal works detection concrete road surface boring and coring device according to claim 1, it is characterised in that The 3rd spring (8) is connected with the outside of piston rod (7) between the lifter plate (9) and diversion cylinder (5).
6. a kind of municipal works detection concrete road surface boring and coring device according to claim 1, it is characterised in that The batteries (26) are provided with electric-quantity display device (24).
7. a kind of municipal works detection concrete road surface boring and coring device according to claim 1, it is characterised in that Coring tube (35) bottom has certain taper.
CN201710618700.0A 2017-07-26 2017-07-26 A kind of municipal works detection concrete road surface boring and coring device Withdrawn CN107288541A (en)

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Application Number Priority Date Filing Date Title
CN201710618700.0A CN107288541A (en) 2017-07-26 2017-07-26 A kind of municipal works detection concrete road surface boring and coring device

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Application Number Priority Date Filing Date Title
CN201710618700.0A CN107288541A (en) 2017-07-26 2017-07-26 A kind of municipal works detection concrete road surface boring and coring device

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107724959A (en) * 2017-11-15 2018-02-23 唐守林 A kind of new power cable installation equipment
CN108203935A (en) * 2017-11-08 2018-06-26 周四海 A kind of follow-on bridge construction equipment
CN108673756A (en) * 2018-06-25 2018-10-19 四川创客知佳科技有限公司 A kind of drill hole on wall device easy to use
CN108915588A (en) * 2018-07-17 2018-11-30 芜湖芬特勘测服务有限公司 A kind of municipal works drilling equipment
CN108956198A (en) * 2018-07-25 2018-12-07 宁夏中科天际防雷研究院有限公司 A kind of traffic civil engineering road surface reparation sampler
CN109357904A (en) * 2018-10-17 2019-02-19 王书志 A kind of municipal works detection concrete road surface boring and coring device
US10301795B1 (en) 2018-05-11 2019-05-28 Pujiang Qilu Environmental Protection Technology Co., Ltd. Power cable installation device
CN110823631A (en) * 2019-12-04 2020-02-21 尹与瑗 Concrete core drilling machine
CN110836789A (en) * 2019-11-19 2020-02-25 郑海飞 Municipal administration road detects and gets core machine drilling rod with concrete drilling
CN112643077A (en) * 2020-09-24 2021-04-13 杨小琴 Automatic punching device for new materials
CN113309477A (en) * 2021-06-23 2021-08-27 贵州盘江煤层气开发利用有限责任公司 Multifunctional drilling machine suitable for coal bed gas exploration and development under multiple coal bed conditions

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108203935A (en) * 2017-11-08 2018-06-26 周四海 A kind of follow-on bridge construction equipment
CN107724959B (en) * 2017-11-15 2018-07-06 广东和星建设工程有限公司 A kind of novel power cable installation equipment
CN107724959A (en) * 2017-11-15 2018-02-23 唐守林 A kind of new power cable installation equipment
US10301795B1 (en) 2018-05-11 2019-05-28 Pujiang Qilu Environmental Protection Technology Co., Ltd. Power cable installation device
CN108673756A (en) * 2018-06-25 2018-10-19 四川创客知佳科技有限公司 A kind of drill hole on wall device easy to use
CN108915588A (en) * 2018-07-17 2018-11-30 芜湖芬特勘测服务有限公司 A kind of municipal works drilling equipment
CN108956198A (en) * 2018-07-25 2018-12-07 宁夏中科天际防雷研究院有限公司 A kind of traffic civil engineering road surface reparation sampler
CN109357904A (en) * 2018-10-17 2019-02-19 王书志 A kind of municipal works detection concrete road surface boring and coring device
CN110836789A (en) * 2019-11-19 2020-02-25 郑海飞 Municipal administration road detects and gets core machine drilling rod with concrete drilling
CN110836789B (en) * 2019-11-19 2022-05-13 江门市建设监理顾问有限公司 Municipal administration road detects and gets core machine drilling rod with concrete drilling
CN110823631A (en) * 2019-12-04 2020-02-21 尹与瑗 Concrete core drilling machine
CN110823631B (en) * 2019-12-04 2022-07-12 大连泛华建设咨询管理有限公司 Concrete core drilling machine
CN112643077A (en) * 2020-09-24 2021-04-13 杨小琴 Automatic punching device for new materials
CN113309477A (en) * 2021-06-23 2021-08-27 贵州盘江煤层气开发利用有限责任公司 Multifunctional drilling machine suitable for coal bed gas exploration and development under multiple coal bed conditions
CN113309477B (en) * 2021-06-23 2022-06-17 贵州盘江煤层气开发利用有限责任公司 Multifunctional drilling machine suitable for coal bed gas exploration and development under multiple coal bed conditions

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Application publication date: 20171024