CN107724957B - A kind of centering type intelligence pile digger device people - Google Patents
A kind of centering type intelligence pile digger device people Download PDFInfo
- Publication number
- CN107724957B CN107724957B CN201710987922.XA CN201710987922A CN107724957B CN 107724957 B CN107724957 B CN 107724957B CN 201710987922 A CN201710987922 A CN 201710987922A CN 107724957 B CN107724957 B CN 107724957B
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- drill bit
- motor
- electric cylinders
- fixedly installed
- fixedly mounted
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- 230000003287 optical effect Effects 0.000 claims abstract description 16
- 241001314948 Bursaria incana Species 0.000 claims abstract description 6
- 230000005611 electricity Effects 0.000 claims description 7
- 238000000151 deposition Methods 0.000 claims description 6
- 230000001429 stepping effect Effects 0.000 claims 2
- 238000010276 construction Methods 0.000 abstract description 4
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 230000003245 working effect Effects 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 14
- 244000309464 bull Species 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 241001513282 Bursaria spinosa Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
Landscapes
- 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)
- Earth Drilling (AREA)
Abstract
A kind of smart diameter changeable type pile digger device people, including drill bit assembly, deposit native box assembly, the first stepper motor, four Athey wheels, four first servo motors, four the first parallel institutions, four first support bars, four the first electric cylinders, four second support bars, four second stepper motors, four the second servo motors, four lead screws, optical axises, the invention has the following advantages that the present invention uses unique support construction, left and right span of the invention is adjusted by four supporting legs around, to adapt to various sizes of stake；The present invention drives optical axis to move up and down by the lead screw of four synchronous workings to control the up and down motion of drill bit, can be realized the amount of feeding for being precisely controlled drill bit；For the present invention by unique drill bit assembly, flexible using sliding strut adjusts the distance that drill bit rotates center, to realize digs the different stake of diameter.
Description
Technical field
The present invention relates to construction machinery equipment technical field, in particular to a kind of centering type intelligence pile digger device people.
Background technique
With economic rapid development, real estate industry, China emerges rapidly and the state of holding ignition heat for a long time, and one
Seat high buildings and large mansions will first dig stake holes before building building, build pile foundation, only play stake firm, just can guarantee building throughout each city
The quality in room, traditional digging stake mode are excavated by manual work stake, and worker digs a stake and generally requires several days even more than ten days, labor intensity
Under greatly and efficient, quality is also difficult to ensure, therefore is commonly used pile digger at the construction field (site) and replaced artificial, but machinery in the market
Equipment volume is huge, structure is complicated, use cost is high, and such as application No. is a kind of 201610639892.9 drilling bucket formulas to dig stake dress
It sets, bull stick of the favourable turn by built-in rotary oil cylinder connection straight down, the lower end of bull stick is connected with a drilling bucket, inside drilling bucket
Drilling rod with one above and below the drilling bucket, lower end, the lower end of drilling rod upper end connection bull stick extend to drilling bucket bottom, under drilling rod
End is fixed on drilling bucket inner wall by fixed transverse rod, and the lower edge upper hinge of drilling bucket inner wall is connected with the native blade of two pieces of brills,
It bores and offers card Button position on the side of native blade, the lower end of drilling rod is equipped with buckle control machine compatible with card Button position
Structure, the present apparatus can be connected by scientific and reasonable structure, be reached through hydraulic control, and simple and convenient manipulation drilling bucket mouth is opened
Close so that piling is unearthed high-efficient, effect is good, and can one be controllable completion, cooperate, improve without more people
While efficiency, construction cost is reduced, has vast market prospect and dissemination.This equipment digs the limited diameter of stake
And special corresponding drilling bucket is needed for the stake of different-diameter.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of centering type intelligence pile digger device people, including drill bit assembly, deposit native case group
Part, the first stepper motor, four Athey wheels, four first servo motors, four the first parallel institutions, four first support bars,
Four the first electric cylinders, four second support bars, four second stepper motors, four the second servo motors, four lead screws, optical axis,
Bottom plate, it is characterised in that:
The bottom plate is rectangular plate-like, and one end of the second support bar of four rectangular cylindricals is respectively hinged at four of bottom plate
At angle, center of rotation is connected with the motor shaft of four second stepper motors respectively, and four second stepper motors are fixed respectively to pacify
On bottom plate, first support bar one end of four rectangular cylindricals is respectively hinged at one end of second support bar, four first electricity
The bottom of cylinder is respectively hinged at the middle part of first support bar side, and telescopic rod is respectively hinged in second support bar side
Portion, the tip circle plate in four the first parallel institutions are respectively and fixedly installed to one end of first support bar, and six the 4th electric cylinders are stretched
Circumferentially uniform ball-joint is on tip circle plate at the top of contracting bar, and circumferentially uniform ball-joint is on the plectane of bottom respectively for bottom, bottom circle
Board bottom portion is fixedly mounted on the motor shaft of first servo motor, is fixedly installed with respectively in the side of four first servo motors
Four Athey wheels；
Circular through hole is equipped at the bottom plate center, optical axis is slidably mounted in the circular through hole, in circular through hole week
It encloses and is uniformly fixedly mounted there are four the second servo motor, four lead screws are respectively and fixedly installed to the motor of four the second servo motors
On axis, square plate is equipped at the top of optical axis, four angles of the plate pass through feed screw nut respectively and are fitted on four lead screws；
It is fixedly installed with the first stepper motor in optical axis bottom, is fixedly installed with and is deposited in native box assembly on its motor shaft
Deposit native case, be fixedly installed with pump on depositing native case side, before the pump on be fixed with the second electric cylinders straight down, in the second electricity
It is fixedly installed with the 5th stepper motor at the top of cylinder telescopic rod, the side of third electric cylinders bottom is fixedly mounted on the 5th stepper motor
On motor shaft, pipeline one end is connected to the outlet of pump, and the other end is fixed at the top of the telescopic rod of third electric cylinders；
Trapped orbit is installed depositing native bottom portion, trapped orbit right side is equipped with perforative rectangular opening, in its leading flank
Equipped with the square hole communicated with the rectangular opening, the sliding strut of rectangular cylindrical is slidably mounted in the rectangular opening on the right side of trapped orbit,
Sliding strut leading flank is uniformly provided with flute profile slot, and gear passes through the flute profile slot of square hole and sliding strut on trapped orbit leading flank
Engagement, gear are fixedly mounted on the motor shaft of third servo motor, and third servo motor is fixedly mounted on trapped orbit leading flank,
Third stepper motor is fixedly mounted on the sliding left top of strut straight down, and drill bit bracket is fixedly mounted on third stepper motor
On motor shaft, drill bit bracket is coniform to be made of sectional rotary table, in the side of drill bit bracket first segment rotary table week
To 18 the second parallel institutions are uniformly provided with, 16 the second parallel machines are circumferentially uniformly provided in the side of second segment rotary table
Structure is circumferentially uniformly provided with ten the second parallel institutions in the side of third section rotary table, circumferentially uniform in the side of the 4th section of rotary table
If being fixedly installed with second parallel institution in drill bit bracket bottom end there are five the second parallel institution, the second parallel institution with
First parallel institution structure is identical, and the 4th stepper motor is fixedly installed on the second parallel institution, in the 4th stepper motor
Hydraulic breaking hammer is installed on motor shaft.
Since present invention employs above-mentioned technical proposals, the invention has the following advantages that the present invention uses unique support
Structure adjusts left and right span of the invention by four supporting legs around, to adapt to various sizes of stake；The present invention passes through four
The lead screw of synchronous working to drive optical axis to move up and down to control the up and down motion of drill bit, can be realized be precisely controlled drill bit into
To amount；For the present invention by unique drill bit assembly, flexible using sliding strut adjusts the distance that drill bit rotates center,
The different stake of diameter is dug to realize.
Detailed description of the invention
Fig. 1 is the schematic perspective view that the present invention integrally assembles.
Fig. 2 is the schematic perspective view that the present invention deposits local soil type's part.
Fig. 3 is the schematic perspective view of the first parallel institution of the invention.
Fig. 4 is the schematic perspective view of partial assembled of the present invention.
Fig. 5 is the schematic perspective view of drill bit assembly of the present invention.
Drawing reference numeral:
1- drill bit assembly；2- deposits native box assembly；The first stepper motor of 3-；4- Athey wheel；5- first servo motor；6- first
Parallel institution；7- first support bar；The first electric cylinders of 8-；9- second support bar；10- second stepper motor；11- the second servo electricity
Machine；12- lead screw；13- optical axis；14- bottom plate；
101- slides strut；102- gear；103- third servo motor；104- trapped orbit；105- drill bit bracket；106-
Third stepper motor；107- hydraulic breaking hammer；The 4th stepper motor of 108-；The second parallel institution of 109-；
201- deposits native case；202- pump；203- pipeline；The second electric cylinders of 204-；The 5th stepper motor of 205-；206- third electricity
Cylinder；
601- tip circle plate；The 4th electric cylinders of 602-；The bottom 603- plectane.
Specific embodiment
The invention will be further described combined with specific embodiments below, in the illustrative examples and explanation of the invention
For explaining the present invention, but it is not as a limitation of the invention.
A kind of centering type intelligence pile digger device people as shown in figure 1, figure 2, figure 3, figure 4 and figure 5, including drill bit assembly 1, deposit
Native box assembly 2, the first parallel institution 6, four of first servo motor 5, four of Athey wheel 4, four of the first stepper motor 3, four
7, four 10, four the second servo motors of second stepper motor of second support bar 9, four of the first electric cylinders 8, four of first support bar
11, four lead screws 12, optical axis 13, bottom plate 14, it is characterised in that:
The bottom plate 14 is rectangular plate-like, and one end of the second support bar 9 of four rectangular cylindricals is respectively hinged at bottom plate 14
Four angles at, center of rotation is connected with the motor shaft of four second stepper motors 10 respectively, four second stepper motors 10
It is respectively and fixedly installed on bottom plate 14,7 one end of first support bar of four rectangular cylindricals is respectively hinged at the one of second support bar 9
End, the bottom of four the first electric cylinders 8 are respectively hinged at the middle part of 7 side of first support bar, and telescopic rod is respectively hinged at second
The middle part of 9 side of support rod, the tip circle plate 601 in four the first parallel institutions 6 are respectively and fixedly installed to the one of first support bar 7
End, circumferentially uniform ball-joint is on tip circle plate 601 at the telescopic rod top of six the 4th electric cylinders 602, and bottom difference is circumferentially
Uniform ball-joint is on bottom plectane 603, and plectane 603 bottom in bottom is fixedly mounted on the motor shaft of first servo motor 5, at four
The side of first servo motor 5 is fixedly mounted respectively there are four Athey wheel 4；
Circular through hole is equipped at 14 center of bottom plate, optical axis 13 is slidably mounted in the circular through hole, logical in the circle
It is uniformly fixedly mounted around hole there are four the second servo motor 11, four lead screws 12 are respectively and fixedly installed to four the second servo electricity
On the motor shaft of machine 11, square plate is equipped at the top of optical axis 13, four angles of the plate are fitted to by feed screw nut respectively
On four lead screws 12；
It is fixedly installed with the first stepper motor 3 in 13 bottom of optical axis, is fixedly installed on its motor shaft and deposits native box assembly 2
In deposit native case 201, be fixedly installed with pump 202 on depositing native 201 side of case, pump 202 front on be fixed with straight down
Second electric cylinders 204 are fixedly installed with the 5th stepper motor 205,206 bottom of third electric cylinders at the top of 204 telescopic rod of the second electric cylinders
Side be fixedly mounted on the motor shaft of the 5th stepper motor 205,203 one end of pipeline be connected to pump 202 outlet, the other end
It is fixed at the top of the telescopic rod of third electric cylinders 206；
Trapped orbit 104 is installed depositing native 201 bottom of case, 104 right side of trapped orbit is equipped with perforative rectangular opening,
Its leading flank is equipped with the square hole communicated with the rectangular opening, and it is right that the sliding strut 101 of rectangular cylindrical is slidably mounted on trapped orbit 104
In the rectangular opening of side, sliding 101 leading flank of strut is uniformly provided with flute profile slot, and gear 102 passes through on 104 leading flank of trapped orbit
Square hole is engaged with the flute profile slot of sliding strut 101, and gear 102 is fixedly mounted on the motor shaft of third servo motor 103, and third is watched
It takes motor 103 and is fixedly mounted on 104 leading flank of trapped orbit, third stepper motor 106 is fixedly mounted on sliding branch straight down
The left top of bar 101, drill bit bracket 105 are fixedly mounted on the motor shaft of third stepper motor 106, and drill bit bracket 105 is by one
The rotary table of one section of section forms coniform, is circumferentially uniformly provided with 18 second in the side of 105 first segment rotary table of drill bit bracket
Parallel institution 109 is circumferentially uniformly provided with 16 the second parallel institutions 109 in the side of second segment rotary table, in third section rotary table
Side be circumferentially uniformly provided with ten the second parallel institutions 109, be circumferentially uniformly provided with five second in the side of the 4th section of rotary table
Parallel institution 109 is fixedly installed with second parallel institution 109 in 105 bottom end of drill bit bracket, the second parallel institution 109 with
First parallel institution, 6 structure is identical, the 4th stepper motor 108 is fixedly installed on the second parallel institution 109, in the 4th stepping
Hydraulic breaking hammer 107 is installed on the motor shaft of motor 108.
Working principle of the present invention are as follows: the present invention is when using preceding, the first parallel institution 6, the first electric cylinders 8, the second stepping electricity
Machine 10 works, and adjusts Athey wheel span in left and right of the present invention, and then first servo motor 5, the work of the first parallel institution 6, this is sent out
Bright to run to operating position, then third servo motor 103 works, and adjusts drill bit bracket 105 and drill bit group according to stake diameter is dug
The distance of 1 rotation center of part, then the first stepper motor 3, third servo motor 103 work, then 11 work of the second servo motor
Make, move downward drill bit assembly 1, drill out the annulus of certain depth, then third servo motor 103 works, and is gradually reduced brill
Head bracket 105 is at a distance from 1 rotation center of drill bit assembly, until being drilled to circular hole, while drilling, pumps the 202, second electric cylinders
204, the 5th stepper motor 205, third electric cylinders 206 work, and the soil sucking being drilled loose is deposited in native case 201, native case 201 is deposited and is filled with
Afterwards, then the second servo motor 11 works, and moves upwards drill bit assembly 1, then the present invention runs to open field, and soil is put
Out, above step is repeated, carries out digging stake work.
In the description of the present invention, it should be noted that term " on ", "lower", "front", "rear", "left", "right" etc. refer to
The orientation or positional relationship shown is to be based on the orientation or positional relationship shown in the drawings or when invention product use usually puts
The orientation or positional relationship put, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to limit of the invention
System.In addition, term " first " " second " " third " etc. is only used for distinguishing description, it is not understood to indicate or imply relatively heavy
The property wanted.
Claims (1)
1. a kind of centering type intelligence pile digger device people, including drill bit assembly (1), deposit native box assembly (2), the first stepper motor (3),
Four Athey wheels (4), four first servo motors (5), four the first parallel institutions (6), four first support bars (7), four
First electric cylinders (8), four second support bars (9), four second stepper motors (10), four the second servo motors (11), four
Lead screw (12), optical axis (13), bottom plate (14), it is characterised in that:
The bottom plate (14) is rectangular plate-like, and one end of the second support bar (9) of four rectangular cylindricals is respectively hinged at bottom plate
(14) at four angles, center of rotation is connected with the motor shaft of four second stepper motors (10) respectively, four the second steppings
Motor (10) is respectively and fixedly installed on bottom plate (14), and first support bar (7) one end of four rectangular cylindricals is respectively hinged at
One end of two support rods (9), the bottom of four the first electric cylinders (8) are respectively hinged at the middle part of first support bar (7) side, stretch
Contracting bar is respectively hinged at the middle part of second support bar (9) side, and the tip circle plate (601) in four the first parallel institutions (6) is respectively
It is fixedly mounted on one end of first support bar (7), circumferentially uniform ball-joint exists at the telescopic rod top of six the 4th electric cylinders (602)
On tip circle plate (601), circumferentially uniform ball-joint is on bottom plectane (603) respectively for bottom, the fixed peace in bottom plectane (603) bottom
On the motor shaft of first servo motor (5), the side of four first servo motors (5) be fixedly mounted respectively there are four carry out
Belt wheel (4)；
Circular through hole is equipped at bottom plate (14) center, optical axis (13) is slidably mounted in the circular through hole, logical in the circle
It is uniformly fixedly mounted around hole there are four the second servo motor (11), four lead screws (12) are respectively and fixedly installed to four second and watch
On the motor shaft for taking motor (11), square plate is equipped at the top of optical axis (13), four angles of the plate are matched by feed screw nut respectively
Conjunction is mounted on four lead screws (12)；
The first stepper motor (3) are fixedly installed in optical axis (13) bottom, is fixedly installed on its motor shaft and deposits native box assembly
(2) native case (201) are deposited in, are fixedly installed with pump (202) on depositing native case (201) side, are fixed on pump (202) front
The second electric cylinders (204) straight down are fixedly installed with the 5th stepper motor (205) at the top of the second electric cylinders (204) telescopic rod,
The side of third electric cylinders (206) bottom is fixedly mounted on the motor shaft of the 5th stepper motor (205), and pipeline (203) one end connects
The outlet in pump (202) is connect, the other end is fixed at the top of the telescopic rod of third electric cylinders (206)；
It being equipped with trapped orbit (104) depositing native case (201) bottom, trapped orbit (104) right side is equipped with perforative rectangular opening,
The square hole communicated with the rectangular opening is equipped in its leading flank, the sliding strut (101) of rectangular cylindrical is slidably mounted on trapped orbit
(104) in the rectangular opening on the right side of, sliding strut (101) leading flank is uniformly provided with flute profile slot, and gear (102) passes through trapped orbit
(104) square hole on leading flank is engaged with the flute profile slot of sliding strut (101), and third servo motor is fixedly mounted in gear (102)
(103) on motor shaft, third servo motor (103) is fixedly mounted on trapped orbit (104) leading flank, third stepper motor
(106) it is fixedly mounted on sliding strut (101) Zuo Dingduan straight down, drill bit bracket (105) is fixedly mounted on third stepping electricity
On the motor shaft of machine (106), drill bit bracket (105) is coniform to be made of sectional rotary table, in drill bit bracket (105)
The side of first segment rotary table is circumferentially uniformly provided with 18 the second parallel institutions (109), circumferentially equal in the side of second segment rotary table
It is even to be equipped with 16 the second parallel institutions (109), ten the second parallel institutions are circumferentially uniformly provided in the side of third section rotary table
(109), five the second parallel institutions (109) are circumferentially uniformly provided in the side of the 4th section of rotary table, in drill bit bracket (105) bottom end
It is fixedly installed with second parallel institution (109), the second parallel institution (109) is identical as the first parallel institution (6) structure,
The 4th stepper motor (108) is fixedly installed on second parallel institution (109), on the motor shaft of the 4th stepper motor (108)
Hydraulic breaking hammer (107) are installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710987922.XA CN107724957B (en) | 2017-10-21 | 2017-10-21 | A kind of centering type intelligence pile digger device people |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710987922.XA CN107724957B (en) | 2017-10-21 | 2017-10-21 | A kind of centering type intelligence pile digger device people |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107724957A CN107724957A (en) | 2018-02-23 |
| CN107724957B true CN107724957B (en) | 2019-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710987922.XA Active CN107724957B (en) | 2017-10-21 | 2017-10-21 | A kind of centering type intelligence pile digger device people |
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| CN (1) | CN107724957B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982402A (en) * | 2021-02-25 | 2021-06-18 | 东营职业学院 | Pile driving device for building |
| CN114223349A (en) * | 2021-11-26 | 2022-03-25 | 肖路艳 | Farming is with device of digging |
| CN116122723B (en) * | 2023-04-18 | 2023-06-23 | 中铁城建集团第一工程有限公司 | Soil material guiding device for milling square pile hole and use method thereof |
| CN116163651B (en) * | 2023-04-24 | 2023-07-18 | 北京欧钻科技有限公司 | Rotary drilling rig |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3662470B2 (en) * | 2000-03-03 | 2005-06-22 | 株式会社モリセン | Suspended mobile pile embedding device and pile embedding method using the same |
| JP5688934B2 (en) * | 2010-08-31 | 2015-03-25 | 日本車輌製造株式会社 | hydraulic unit |
| CN104897143B (en) * | 2014-03-05 | 2017-09-05 | 中国葛洲坝集团股份有限公司 | A kind of cylinder forced centering observation pier and its method for embedding |
| CN104265164B (en) * | 2014-08-13 | 2016-04-13 | 国家电网公司 | The creeping into draw to dig of plateau mountain foundation pit excavation construction equipment carries native device |
| CN204920798U (en) * | 2015-08-31 | 2015-12-30 | 安徽三建工程有限公司 | Can receive a formula both wings ream bit |
| CN206458323U (en) * | 2017-01-22 | 2017-09-01 | 深圳市正兴基础建筑工程有限公司 | A kind of impact tup punched in advance for rotary digging stake holes |
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| CN107724957A (en) | 2018-02-23 |
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Effective date of registration: 20190321 Address after: 528200 Room 1005, Tian'an Nanhai Digital New Town, No. 1, Jianping Road, Guicheng Street, Nanhai District, Foshan City, Guangdong Province (Residence Declaration) Applicant after: Foshan Pingshi Deep Foundation Pit Engineering Co., Ltd. Address before: 054900 Ma Lan village, Luzhai Township, Linxi County, Xingtai, Hebei, 25 Applicant before: Meng Qingshi |
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