CN203569566U - Large-dip-angle multifunctional piling machine - Google Patents
Large-dip-angle multifunctional piling machine Download PDFInfo
- Publication number
- CN203569566U CN203569566U CN201320735376.8U CN201320735376U CN203569566U CN 203569566 U CN203569566 U CN 203569566U CN 201320735376 U CN201320735376 U CN 201320735376U CN 203569566 U CN203569566 U CN 203569566U
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- spandrel girder
- unit head
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- 238000003756 stirring Methods 0.000 claims description 18
- 238000005553 drilling Methods 0.000 claims description 13
- 238000004146 energy storage Methods 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 238000010276 construction Methods 0.000 abstract description 28
- 239000011513 prestressed concrete Substances 0.000 abstract description 4
- 239000002689 soil Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000007943 implant Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The utility model discloses a large-dip-angle multifunctional piling machine which comprises a rotatable chassis, an adjusting oil cylinder and a control room located on the chassis. The middle of the chassis is connected with an adjusting system, and the other end of the adjusting system is connected with a bearing beam. The control room controls a horizontal state, a vertical state and any oblique state of the bearing beam through the adjusting system, and a piling system capable of horizontally moving along the bearing beam is arranged on the bearing beam. The bearing beam can be in a predetermined operation state by adjusting the positions of a balance oil cylinder and a supporting arm which are arranged on the rotatable chassis, accordingly prestressed concrete foundation pile construction operation is performed on various angle construction faces (including various arc-shaped dome faces) in the horizontal state, the vertical state and a large (any) dip angle state, and the technical bottleneck influencing the ground foundation pit construction and the technical bottleneck that the prestressed concrete pile construction cannot be performed in the tunnel construction are thoroughly overcome.
Description
Technical field
The utility model relates to the pile foundation engineering technical field in building operations, relates in particular to one and be applicable to carry out in vertical working face (comprising various arc domed-face) pile driver of level, the high inclination-angle such as vertical, features foundation pile construction
Background technology
Along with renewal day by day and the progress of the various constructional materialss of construction work and design concept, accordingly also more and more higher to completing the technological means of construction and the requirement of capability of engineering equipment of various design concepts and constructional materials.At present conventional often function singleness of piling machinery on pile foundation engineering, cannot complete and in vertical working face (comprising various arc domed-face), carry out level, high inclination-angle, the requirement of features foundation pile construction such as vertical.Especially at soft foundation, easily slide side slope and go along with sb. to guard him in engineering and underground Foundation Pit Support Engineering, often need to preformed pile be squeezed into easily sliding side slope stratum of soft foundation under arbitrary angle state, thereby reach the object on fast firm excavation slope stratum.
But existing piling machinery all can not solve above-mentioned construction difficult problem, therefore need to develop a kind of Multifunction piling machinery, to meet pile foundation construction requirement.
Summary of the invention
The utility model provides a kind of brand-new pile foundation construction machinery, there is convenient and quick construction, the advantages such as piling cost is lower, solved the problem that traditional piling machinery can only be driven piles vertically downward, can in vertical working face (comprising various arc domed-face), carry out carrying out pile foundation construction operation under level, vertical and large (arbitrarily) inclination angle state.
A kind of high inclination-angle multifunctional pile driver, comprises rotatable chassis, regulates oil cylinder, is positioned at the control room on chassis, and middle part, chassis is connected with regulating system, and the regulating system other end is connected with spandrel girder; Control room, by the level of regulating system control spandrel girder, vertical and any heeling condition, is provided with the pile driving system that can seesaw along spandrel girder on spandrel girder.
Regulating system comprises support arm, balancing cylinder and hydraulic pressure assembly;
Regulate oil cylinder to be connected with hydraulic pressure assembly by oil circuit with balancing cylinder;
Balancing cylinder is connected spandrel girder with the other end of support arm;
The angle of rotating shaft on the angle of inclination of control room by adjustment oil cylinder and collapsing length and support arm, can realize spandrel girder level, the vertical and state of inclination arbitrarily.
Balancing cylinder has two, lays respectively at the left and right sides of support arm, is convenient to regulate the heeling condition of spandrel girder;
On chassis, be provided with hoist engine, spandrel girder comprises that two are arranged in juxtaposition and girder separated by a distance; The bottom of two girders is connected by the Plate Welding of sufficient intensity, and entirety is flute profile; Girder can adopt various shaped steel or by forms such as welding steel formation.
The right-hand member of spandrel girder is provided with crown sheave, and each girder top is all welded with the slide rail arranging along spandrel girder length direction.
Hoist engine is connected with pile driving system by hawser, crown sheave, for pulling pile driving system, it is moved along slide rail.
Spandrel girder left end top is welded with guide pile device; Guide pile device is tubbiness circular arc type member, limits the displacement of pile body when driving piles, and prevents that pile body from tilting to cause driving piles unsuccessfully.Pile driving system comprises high-voltage energy storage oil cylinder, impact weights, spring-compressed mechanism; High-voltage energy storage oil cylinder is installed in the groove of spandrel girder, is provided with a piston in cylinder; The right-hand member of piston is connected with grab; On slide rail, settle impact weights, in impact weights, be provided with the buckle matching with grab; Described spring-compressed mechanism is fixedly mounted on spandrel girder right-hand member top.
The position that high-voltage energy storage oil cylinder is positioned at spandrel girder inner groovy arranges according to spring-compressed mechanism, can be positioned at the left end of spandrel girder, also can be positioned at the centre of spandrel girder, even right-hand member.
Impact weights is connected with hoist engine by hawser, crown sheave; High-voltage energy storage oil cylinder is connected with hydraulic pressure assembly by oil circuit.
Spandrel girder left end is also provided with crown sheave; Pile driving system comprises drill bit, drilling rod, unit head, crown sheave; Drilling rod is arranged on unit head, and unit head is arranged on slide rail;
Unit head is connected with hoist engine by the crown sheave at hawser, spandrel girder two ends.
Unit head is that single shaft stirs unit head or multi-shaft stirring unit head, is welded with stirring vane on drilling rod.High inclination-angle Multifunctional piling machine can carry out the construction operation of single shaft or multi-shaft stirring stake and drilled pile thus.
Unit head is the combination of rotary power head and silent piling system, is provided with churning hole on drill bit.During operation, pile body coordinates with silent piling system through the guide pile device on spandrel girder left end top, and drill bit gos deep into the soil body through pile body; Rotary power head drives drilling rod, bit, and the churning hole rotation spray on drill bit penetrates high pressure cement slurry cutting soil, and silent piling system is pressed into the soil body by pile body vibration, completes construction operation.
Unit head is the combination of stirring unit head and silent piling system, and the drill bit on drilling rod termination is telescopic bottom expanding drill.By telescopic bottom expanding drill rotation, expand the end, silent piling system is pressed into the soil body by pile tube simultaneously.
Slide rail also can substitute with slide bar, saves material.
The beneficial effects of the utility model are:
1, by balancing cylinder and support arm are set on the chassis rotating, position between adjustment oil cylinder and support arm, make spandrel girder reach predetermined job state, thereby realize, in various angle working face (comprising various arc domed-face), carry out carrying out prestressed concrete foundation pile construction operation under level, vertical and large (arbitrarily) inclination angle state, thoroughly solved and perplexed for a long time the technical bottleneck that cannot carry out prestressed concrete pile construction in foundation foundation pit construction and constructing tunnel.
2, novelty pass through high-voltage energy storage oil cylinder pushing impact weights Compress Spring compressing mechanism, reach the object of quick piling, saved energy consumption.
3, this machine can require to install different unit heads according to different process, carry out single shaft or multi-shaft stirring stake operation, drilled pile operation, high-pressure rotary jet grouting pile operation, implant preformed pile operation, given full play to this machine multifunctional and planted the technical advantage of stake and reach construction object.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model king-pile machine platform;
Fig. 2 is the sectional view of spandrel girder shown in A-A in Fig. 1;
Fig. 3 is the schematic diagram of the utility model embodiment 1 king-pile machine;
Fig. 4 is the accumulation of energy schematic diagram of impact weights in the utility model embodiment 1;
Fig. 5 is the piling schematic diagram of impact weights in the utility model embodiment 1;
Fig. 6 is the second schematic diagram of the utility model embodiment 1 king-pile machine piling;
Fig. 7 is the schematic diagram of the utility model embodiment 2 king-pile machines.
The specific embodiment
As shown in Figure 1, a kind of high inclination-angle multifunctional pile driver, comprises chassis 1, regulates oil cylinder 2, is positioned at the One On The Chassis control room 3 and hoist engine 9.
The angle of rotating shaft 8 on the angle of inclination by adjustment oil cylinder 5, control room 3 and collapsing length and support arm 4, realizes spandrel girder level, the vertical and state of inclination arbitrarily.
As shown in Figure 2, spandrel girder 7 comprises that two are arranged in juxtaposition and the bottom of 21, two girders 21 of girder of space certain distance is connected by the Plate Welding of sufficient intensity, and entirety is flute profile.Girder adopts i shaped steel or channel-section steel, forms the spandrel girder of sufficient intensity by two girders of Plate Welding.
As shown in Figure 3, spandrel girder 7 right-hand members are provided with crown sheave 10, and each girder top is all welded with the slide rail 11 arranging along spandrel girder 7 length directions, and left end top is welded with guide pile device 12; Guide pile device 12 is tubbiness circular arc type member, pile body displacement while preventing from driving piles.According to pile body shape needs, guide pile device can be also other shapes.
The middle part of spandrel girder 7 upper grooves is provided with high-voltage energy storage oil cylinder 13, is provided with a piston 16 in cylinder; The left end of piston 16 is full of oil, and right-hand member is connected with grab 17.On slide rail 11, be mounted with impact weights 14, in impact weights 14, be provided with the buckle 18 matching with grab 17.
The right-hand member top of spandrel girder 7 is installed with spring-compressed mechanism 15.
Shown in Fig. 4-5, work progress is as follows:
Stake machine moves to intended site, by regulating oil cylinder spud pile machine.Chassis rotation is to piling position, and control room adjustment oil cylinder and support arm, make spandrel girder tilt alignment piling position.Pile body, through guide pile device, is placed on spandrel girder.
Start hoist engine, by hawser, impact weights is drawn to precalculated position.High-voltage energy storage oil cylinder is by the oil transportation of hydraulic pressure assembly, promote piston, grab and deduction cooperatively interact, and related promotion impact weights is to spring-compressed mechanism kinematic, until the hammer in spring-compressed mechanism is compressed to accumulation of energy when maximum, the blocking device locking hammer in spring-compressed mechanism.
During piling, high-voltage energy storage oil cylinder discharges oil to origin-location, grab is thrown off with deduction, hoist engine upper cable and impact weights are thrown off, blocking device discharges hammer, hammer is impact weight under the huge potential energy of spring, promotes impact weights and travels forward and drive piles with high energy impact events stake jacking row along slide rail with the acceleration of setting.
Impact weights is clashed into a reaction force that stake top produces and is made again the impact weights Compress Spring compressing mechanism again that moves backward, and the energy that spring-compressed mechanism produces promotes again impact weights and travels forward, until a very brief reciprocating impact end-of-job.Repeat said process, until stake is squeezed into soil layer.
When spandrel girder needs in vertical state, chassis 90-degree rotation.The heeling condition of spandrel girder also can be as shown in Figure 6.
As shown in Figure 7, a kind of high inclination-angle multifunctional pile driver, comprises chassis 1, regulates oil cylinder 2, is positioned at the One On The Chassis control room 3 and hoist engine 9.Chassis 1 can rotate, and middle part is connected with support arm 4, balancing cylinder 5 and hydraulic pressure assembly 6, regulates oil cylinder 2 to be connected with hydraulic pressure assembly 6 by oil circuit with balancing cylinder 5.
Balancing cylinder 5 is connected with a spandrel girder 7 with the other end of support arm 4, and balancing cylinder 5 has two, lays respectively at the left and right sides of support arm 7.
As described in example 1 above, the left and right two ends of spandrel girder 7 are all provided with crown sheave 10 to the structure of spandrel girder 7, and left end top is welded with guide pile device 12, and unit head 20 is installed on slide rail 11, and drilling rod 19 is installed on unit head 20.Unit head 20 is connected with hoist engine 9 by hawser, crown sheave 10.
According to the difference of construction technology, select different unit heads.
When stake machine carries out the construction operation of single shaft or multi-shaft stirring stake and drilled pile, unit head is that single shaft stirs unit head or multi-shaft stirring unit head, is welded with stirring vane on drilling rod.On spandrel girder, can determine whether according to actual needs to install guide pile device.
Unit head drives drilling rod rotation, the stirring vane Stirring soil body; After construction agitation pile, if desired in agitation pile, implant pile body, implant pile body after can changing unit head into silent piling system.
If carry out high-pressure rotary-spray operation, unit head can be the combination of rotary power head and silent piling system, and churning hole is set on drill bit.During operation, rotary power head drives the rotation of churning hole, ejects water under high pressure mud cutting soil, and silent piling system is pressed into the soil body by pile body vibration simultaneously, completes construction operation.
Unit head can also, for stirring the combination of unit head and silent piling system, arrange telescopic bottom expanding drill on the termination of drilling rod.Telescopic bottom expanding drill is through pile body and guide pile device, and under the effect of stirring unit head, the end is expanded in rotation, and silent piling system is pressed into the soil body by pile tube simultaneously.
During construction, start hoist engine, by hawser, drive unit head to seesaw along slide rail.
Above embodiment illustrates that a machine can carry out the pile foundation construction of various angles; simultaneously according to the difference of construction technology; the unit head that the construction that can change the outfit on spandrel girder needs; therefore the technical scheme that is equal to replacement or equivalent transformation formation of every other similar embodiments of employing, all drops on the claimed scope of the present invention.
Claims (9)
1. a high inclination-angle multifunctional pile driver, comprise rotatable chassis (1), regulate oil cylinder (2), be positioned at the control room (3) on chassis (1), it is characterized in that: described middle part, chassis (1) is connected with regulating system, and the described regulating system other end is connected with spandrel girder (7); Described control room (3), by the level of regulating system control spandrel girder (7), vertical and any heeling condition, is provided with the pile driving system that can seesaw along spandrel girder (7) on described spandrel girder (7).
2. high inclination-angle multifunctional pile driver according to claim 1, is characterized in that: described regulating system comprises support arm (4), balancing cylinder (5) and hydraulic pressure assembly (6);
Described adjusting oil cylinder (2) is connected with hydraulic pressure assembly (6) by oil circuit with balancing cylinder (5);
Described balancing cylinder (5) is connected spandrel girder (7) with the other end of support arm (4);
Spandrel girder level, state vertical and that tilt arbitrarily, by the angle of inclination of adjustment oil cylinder (5) and the angle of collapsing length and the upper rotating shaft (8) of support arm (4), can be realized in described control room (3).
3. high inclination-angle multifunctional pile driver according to claim 2, is characterized in that: described balancing cylinder (5) has two, lays respectively at the left and right sides of support arm (4);
On described chassis (1), be provided with hoist engine (9), described spandrel girder (7) comprises that two are arranged in juxtaposition and girder (21) separated by a distance; The bottom of two girders (21) is connected by the Plate Welding of sufficient intensity, and entirety is flute profile;
The right-hand member of spandrel girder (7) is provided with crown sheave (10), and each girder (21) top is all welded with the slide rail (11) arranging along spandrel girder (7) length direction;
Described hoist engine (9) is connected with pile driving system by hawser, crown sheave (10).
4. high inclination-angle multifunctional pile driver according to claim 3, is characterized in that: described spandrel girder (7) left end top is welded with guide pile device (12);
Described pile driving system comprises high-voltage energy storage oil cylinder (13), impact weights (14), spring-compressed mechanism (15); Described high-voltage energy storage oil cylinder (13) is installed in the groove of spandrel girder (7), is provided with a piston (16) in cylinder, and piston (16) right-hand member is connected with grab (17); The upper impact weights (14) of settling of described slide rail (11), is provided with the buckle (18) matching with grab in impact weights; Described spring-compressed mechanism (15) is fixedly mounted on spandrel girder right-hand member top;
Described impact weights (14) is connected with hoist engine (9) by hawser, crown sheave (10); Described high-voltage energy storage oil cylinder (13) is connected with hydraulic pressure assembly by oil circuit.
5. high inclination-angle multifunctional pile driver according to claim 3, is characterized in that: described spandrel girder (7) left end is also provided with crown sheave (10);
Described pile driving system comprises drill bit, drilling rod (19), unit head (20), crown sheave (10); It is upper that drilling rod (19) is arranged on unit head (20), and unit head (20) is arranged on slide rail (11);
Described unit head (20) is connected with hoist engine (9) by the crown sheave (10) at hawser, spandrel girder (7) two ends.
6. high inclination-angle multifunctional pile driver according to claim 5, is characterized in that: described unit head (20), for single shaft stirs unit head or multi-shaft stirring unit head, is welded with stirring vane on described drilling rod (19).
7. high inclination-angle multifunctional pile driver according to claim 5, is characterized in that: described spandrel girder (7) left end top is welded with guide pile device (12);
Described unit head (20) is the combination of rotary power head and silent piling system, is provided with churning hole on drill bit.
8. high inclination-angle multifunctional pile driver according to claim 5, is characterized in that: described spandrel girder (7) left end top is welded with guide pile device (12);
Described unit head (20) is for stirring the combination of unit head and silent piling system, and the drill bit on drilling rod (19) termination is telescopic bottom expanding drill.
9. according to the high inclination-angle multifunctional pile driver described in claim 3,4 or 5, it is characterized in that: described slide rail (11) is slide bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320735376.8U CN203569566U (en) | 2013-11-15 | 2013-11-15 | Large-dip-angle multifunctional piling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320735376.8U CN203569566U (en) | 2013-11-15 | 2013-11-15 | Large-dip-angle multifunctional piling machine |
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| Publication Number | Publication Date |
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| CN203569566U true CN203569566U (en) | 2014-04-30 |
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| CN201320735376.8U Expired - Lifetime CN203569566U (en) | 2013-11-15 | 2013-11-15 | Large-dip-angle multifunctional piling machine |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066131A (en) * | 2015-07-21 | 2015-11-18 | 长飞光纤光缆股份有限公司 | High-precision and four-dimensional blowtorch adjusting device |
| CN105256801A (en) * | 2015-09-30 | 2016-01-20 | 李兆勇 | Quick dyke breach pile jetting machine and pile jetting method |
| CN105297725A (en) * | 2015-09-30 | 2016-02-03 | 刘冉 | Novel pile ejector and pile ejecting method thereof |
| CN105604060A (en) * | 2015-09-30 | 2016-05-25 | 李兆勇 | Dam breaking opening pile jetting machine and pile jetting method thereof |
| CN106835883A (en) * | 2017-03-21 | 2017-06-13 | 中铁西北科学研究院有限公司 | A kind of horizontal static pressure compaction equipment of self-drilling type of existing line subgrade defect regulation |
| CN108049387A (en) * | 2017-12-21 | 2018-05-18 | 长安大学 | A kind of all hydraulic caterpillar slope of highway compaction apparatus |
| CN109371958A (en) * | 2018-10-31 | 2019-02-22 | 庞贵春 | A kind of taper pile construction method |
| CN110528532A (en) * | 2019-08-07 | 2019-12-03 | 上海城地建设股份有限公司 | A kind of precast splice type steel concrete combined support stake and its construction method |
| CN110552346A (en) * | 2019-08-29 | 2019-12-10 | 天津大学 | Double-spraying double-shaft oblique cement-soil stirring and profile steel inserting integrated construction method and equipment |
| CN112681311A (en) * | 2021-01-18 | 2021-04-20 | 中建市政工程有限公司 | Improved equipment for undisturbed enclosure construction of pine pile and construction method thereof |
| CN112709222A (en) * | 2020-12-03 | 2021-04-27 | 北京东地岩土工程有限公司 | Triaxial mixing pile structure in water-rich thick sand hard stratum and construction process thereof |
| CN112726603A (en) * | 2020-12-29 | 2021-04-30 | 福建汇达建筑工程有限公司 | Column pile driver is used in construction of building engineering |
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2013
- 2013-11-15 CN CN201320735376.8U patent/CN203569566U/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066131A (en) * | 2015-07-21 | 2015-11-18 | 长飞光纤光缆股份有限公司 | High-precision and four-dimensional blowtorch adjusting device |
| CN105256801A (en) * | 2015-09-30 | 2016-01-20 | 李兆勇 | Quick dyke breach pile jetting machine and pile jetting method |
| CN105297725A (en) * | 2015-09-30 | 2016-02-03 | 刘冉 | Novel pile ejector and pile ejecting method thereof |
| CN105604060A (en) * | 2015-09-30 | 2016-05-25 | 李兆勇 | Dam breaking opening pile jetting machine and pile jetting method thereof |
| CN105256801B (en) * | 2015-09-30 | 2017-01-18 | 孙继铮 | Quick dyke breach pile jetting machine and pile jetting method |
| CN106835883A (en) * | 2017-03-21 | 2017-06-13 | 中铁西北科学研究院有限公司 | A kind of horizontal static pressure compaction equipment of self-drilling type of existing line subgrade defect regulation |
| CN108049387B (en) * | 2017-12-21 | 2019-06-28 | 长安大学 | A kind of all hydraulic caterpillar slope of highway compaction apparatus |
| CN108049387A (en) * | 2017-12-21 | 2018-05-18 | 长安大学 | A kind of all hydraulic caterpillar slope of highway compaction apparatus |
| CN109371958A (en) * | 2018-10-31 | 2019-02-22 | 庞贵春 | A kind of taper pile construction method |
| CN110528532A (en) * | 2019-08-07 | 2019-12-03 | 上海城地建设股份有限公司 | A kind of precast splice type steel concrete combined support stake and its construction method |
| CN110552346A (en) * | 2019-08-29 | 2019-12-10 | 天津大学 | Double-spraying double-shaft oblique cement-soil stirring and profile steel inserting integrated construction method and equipment |
| CN112709222A (en) * | 2020-12-03 | 2021-04-27 | 北京东地岩土工程有限公司 | Triaxial mixing pile structure in water-rich thick sand hard stratum and construction process thereof |
| CN112726603A (en) * | 2020-12-29 | 2021-04-30 | 福建汇达建筑工程有限公司 | Column pile driver is used in construction of building engineering |
| CN112726603B (en) * | 2020-12-29 | 2022-06-07 | 福建汇达建筑工程有限公司 | Column pile driver is used in engineering construction is built in room |
| CN112681311A (en) * | 2021-01-18 | 2021-04-20 | 中建市政工程有限公司 | Improved equipment for undisturbed enclosure construction of pine pile and construction method thereof |
| CN112681311B (en) * | 2021-01-18 | 2022-08-26 | 中建市政工程有限公司 | Undisturbed enclosure construction method for pine pile by improved equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20140430 |