CN119266207A - A limited micro-space pile foundation construction method based on a multifunctional pile driver - Google Patents
A limited micro-space pile foundation construction method based on a multifunctional pile driver Download PDFInfo
- Publication number
- CN119266207A CN119266207A CN202411360266.7A CN202411360266A CN119266207A CN 119266207 A CN119266207 A CN 119266207A CN 202411360266 A CN202411360266 A CN 202411360266A CN 119266207 A CN119266207 A CN 119266207A
- Authority
- CN
- China
- Prior art keywords
- telescopic
- channel
- pile
- drill
- rod
- 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
Links
Landscapes
- Earth Drilling (AREA)
Abstract
本发明公开了一种基于多功能桩机的有限微空间桩基施工方法，属于建筑工程桩基技术领域。本发明的有限微空间桩基施工方法，包括以下施工步骤：S1、根据桩基类型选择配套钻具：桩基类型至少包括钻孔灌注桩、搅拌桩、高压旋喷桩和螺纹扩大体钢桩中的一种；S2、桩机设备组装及就位：桩机设备包括主机总成、钻架总成、动力头总成和多通道伸缩钻杆；S3、桩基施工：根据不同桩基工艺启动对应的桩机设备和辅助设备进行桩基施工。本发明利用多功能桩机实现在一台桩机上可进行多种桩基类型施工，配合带有多通道分流器的动力头和多通道伸缩钻杆，使得桩机能够在有限的空间内实现高效、环保的桩基施工，提高了设备的适应性和集成度，减少了施工中的接续工作，提高了施工效率，能够适应多种地质条件和施工需求。
The present invention discloses a limited micro-space pile foundation construction method based on a multifunctional pile driver, and belongs to the technical field of pile foundations in construction engineering. The limited micro-space pile foundation construction method of the present invention includes the following construction steps: S1, selecting matching drilling tools according to the type of pile foundation: the pile foundation type includes at least one of bored cast-in-place piles, mixing piles, high-pressure rotary jet piles and threaded enlarged steel piles; S2, assembling and positioning the pile driver equipment: the pile driver equipment includes a main engine assembly, a drill frame assembly, a power head assembly and a multi-channel telescopic drill rod; S3, pile foundation construction: starting the corresponding pile driver equipment and auxiliary equipment according to different pile foundation processes to carry out pile foundation construction. The present invention utilizes a multifunctional pile driver to realize the construction of multiple types of pile foundations on one pile driver, and cooperates with a power head with a multi-channel diverter and a multi-channel telescopic drill rod, so that the pile driver can realize efficient and environmentally friendly pile foundation construction in a limited space, improves the adaptability and integration of the equipment, reduces the follow-up work during construction, improves the construction efficiency, and can adapt to various geological conditions and construction requirements.
Description
Technical Field
The invention relates to a pile foundation construction technology, in particular to a limited micro-space pile foundation construction method based on a multifunctional pile machine.
Background
The low headroom drilling machine construction method is a technology developed for adapting to pile foundation construction in urban building dense areas, under overhead bridges or in limited space environments. Along with the acceleration of the urban process, the traditional pile foundation construction method is not suitable for the special environments due to the problems of huge equipment volume, low construction efficiency, large influence on the surrounding environment and the like. To solve these problems, a low headroom drilling machine and a construction method thereof have been developed.
Currently, there are related low-clearance drilling machines and construction methods thereof, such as a "low-clearance double-rotary drilling machine disclosed in chinese patent No. ZL201711385608.0 and a construction method thereof" (the authorized notice day is 2024,4, 9), a "front-back displacement low-clearance drilling machine" disclosed in chinese patent No. ZL201610702344.6 (the authorized notice day is 2019, 10, 25), a "low-clearance rotary drilling machine" disclosed in chinese patent No. ZL202111556090.9 (the authorized notice day is 2024, 3, 1), and the like. These prior art patents demonstrate the possibility of efficient, environmentally friendly construction in confined spaces.
However, although these techniques improve the construction efficiency and safety to some extent, there are still some problems and disadvantages in the conventional construction method:
(1) The construction efficiency problem is that in the traditional construction method, the drill rod needs to be connected one by one, so that the construction complexity is increased, and the construction efficiency is obviously reduced;
(2) The existing low headroom drilling machine may lack the capability of adapting to different geological conditions, and for changeable underground environments, the equipment may not be effectively treated;
(3) Space limitation problems in that in a narrow space, the volume and construction range of equipment are limited, which may cause the construction quality to be affected or a predetermined construction task cannot be completed;
(4) The existing construction method is possibly too single, cannot meet diversified construction requirements, and lacks a multifunctional pile machine capable of adapting to various foundation processes;
(5) The problem of equipment integration level is that in a narrow space, the equipment is required to have smaller volume and higher integration level, but the existing equipment can be too huge, which is not beneficial to flexible operation in a limited space;
Difficulties encountered in solving the above problems include difficulty in technical innovation, pressure in cost control, limitation of existing manufacturing processes, and the like. To overcome these problems, there is a need to develop more flexible, efficient, multifunctional construction equipment and methods.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to overcome the defects of the prior limited micro-space pile foundation construction process, provides a limited micro-space pile foundation construction method based on a multifunctional pile machine, adopts the technical scheme of the invention, realizes that a plurality of pile foundation types can be constructed on one pile machine by utilizing the multifunctional pile machine, the cooperation has the unit head and the flexible drilling rod of multichannel shunt for pile foundation construction of high-efficient, environmental protection can be realized in limited space to the stake, has improved the adaptability and the integrated level of equipment, has reduced the work of continuing in the construction, has improved the efficiency of construction, can adapt to multiple geological conditions and construction demand.
2. Technical proposal
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
The invention discloses a limited micro-space pile foundation construction method based on a multifunctional pile machine, which comprises the following construction steps:
s1, selecting a matched drilling tool according to the pile foundation type:
The pile foundation type at least comprises one of a bored pile, a stirring pile, a high-pressure jet grouting pile and a screw expansion body steel pile, and the matched drilling tool comprises a corresponding process drill bit, wherein the process drill bit corresponds to the bored pile, the stirring pile, the high-pressure jet grouting pile and the screw expansion body steel pile;
s2, pile driver equipment is assembled and positioned:
The pile machine equipment comprises a host assembly, a drill frame assembly, a power head assembly and a multi-channel telescopic drill rod, wherein the drill frame assembly is arranged on the host assembly, the power head assembly is arranged on the drill frame assembly, the multi-channel telescopic drill rod is detachably arranged on the power head assembly, the process drill bit is directly arranged on the power head assembly or arranged on the power head assembly through the multi-channel telescopic drill rod,
The power head assembly is provided with a multichannel diverter, a drill rod rotary joint and a telescopic driving joint which are independently driven, wherein the drill rod rotary joint is used for driving a process drill bit to rotate, the telescopic driving joint is used for controlling a multichannel telescopic drill rod to move in a telescopic manner, and the multichannel diverter is arranged at the upper end of the telescopic driving joint and is used for being connected with a ground fluid system;
The multi-channel telescopic drill rod comprises a plurality of sections of telescopic rod bodies, a transmission screw rod and a corrugated telescopic pipe, wherein the telescopic rod bodies are sleeved together from outside to inside step by step, the transmission screw rod is used for controlling the telescopic rod bodies to move in a telescopic manner, the corrugated telescopic pipe is used for establishing channels, the transmission screw rod is positioned in the telescopic rod body, a plurality of fluid channels communicated with corresponding split channels in the multi-channel splitter are arranged on the transmission screw rod positioned in the center, the corrugated telescopic pipe is sleeved together from inside to outside to form a plurality of pipe channels, and the upper end of the corrugated telescopic pipe is connected with the transmission screw rod positioned in the center through a multi-channel rotary joint to correspondingly communicate the corresponding pipe channels with the fluid channels one by one;
The pile machine equipment and the auxiliary equipment are transported to a designated construction position and connected with each pipeline and each line in parallel, and meanwhile, the main machine assembly is fixed, and a process drill bit is adjusted to a construction angle through the drill frame assembly;
s3, pile foundation construction:
And after installing the corresponding process drill bit, centering and debugging are carried out, and corresponding pile machine equipment and auxiliary equipment are started according to different pile foundation processes to carry out pile foundation construction.
Further, the construction process of the bored pile in step S3 is as follows:
S3-1, mounting the multi-channel telescopic drill rod on a power head assembly, enabling a drill rod rotary joint of the power head assembly to be connected with a telescopic rod body of the multi-channel telescopic drill rod, and enabling a telescopic driving joint of the power head assembly to be connected with a transmission screw rod of the multi-channel telescopic drill rod;
S3-2, after the pile casing is installed, driving the drilling bit to rotate through the power head assembly, and driving the drilling bit to drill through the downward movement of the power head assembly by the aid of the extension of the multi-channel telescopic drill rod and the drill floor assembly, and simultaneously starting drilling mud circulation through auxiliary equipment;
S3-3, mounting a grouting guide pipe at the lower end of the multi-channel telescopic drill rod after the drilling bit is disassembled, and hanging a reinforcement cage in the pile hole;
s3-4, after the reinforcement cage is installed in place, the extension of the multi-channel telescopic drill rod and the downward movement of the power head assembly are driven by the drill frame assembly to lower the grouting guide pipe, the multi-channel flow divider is connected with a concrete pump, and concrete is poured upwards from the bottom of the pile hole;
And S3-5, lifting the multi-channel telescopic drill rod and the grouting guide pipe after the pouring is finished, and flushing with clear water.
Furthermore, the drilling bit is provided with two fluid inlets and outlets which are arranged up and down, the two fluid inlets and outlets are respectively communicated with corresponding tube cavities, the fluid inlet and outlet at the lower part is arranged at the spiral wing plate of the drilling bit, and the drilling mud circulation has the following two modes:
A. The method comprises the steps of closing a fluid inlet and a fluid outlet at the lower part by a plug, enabling circulating slurry to enter through a multi-channel diverter, sequentially spraying out from the bottom of a drilling bit after passing through a pipe channel in the multi-channel telescopic drill rod and a corresponding pipe cavity in the drilling bit;
B. The method comprises the steps of sealing a fluid inlet and a fluid outlet at the upper part by a plug, inputting circulating slurry into a drill hole in a reverse circulation mode, enabling a chip slurry mixed solution to enter at the bottom of the drill hole through the bottom of the drill bit, sequentially sucking the chip slurry mixed solution to the ground through a corresponding pipe cavity in the drill bit, a pipe channel in a multi-channel telescopic drill rod and a multi-channel shunt by a vacuum pump, and simultaneously spraying high-pressure gas through a high-pressure air compressor through the multi-channel shunt, the pipe channel in the multi-channel telescopic drill rod, the corresponding pipe cavity in the drill bit and the fluid inlet and outlet at the lower part, and assisting a spiral wing plate to cut soil and prevent sticking.
Further, the construction process of the stirring pile in the step S3 is as follows:
S3-1, mounting a multi-channel telescopic drill rod on a power head assembly, enabling a drill rod rotary joint of the power head assembly to be connected with a telescopic rod body of the multi-channel telescopic drill rod, and enabling a telescopic driving joint of the power head assembly to be connected with a transmission screw rod of the multi-channel telescopic drill rod;
s3-2, driving the stirring pile drill bit to rotate through the power head assembly, driving the stirring pile drill bit to drill by matching with the extension of the multi-channel telescopic drill rod and the downward movement of the drill carriage assembly, simultaneously starting the curing agent high-pressure pump and the high-pressure air compressor, and injecting the curing agent and the high-pressure air from the corresponding fluid nozzles of the stirring pile drill bit after passing through the multi-channel flow divider, the pipe channels in the multi-channel telescopic drill rod and the corresponding pipe cavities in the stirring pile drill bit to perform rotary stirring drilling;
s3-3, after the stirring pile drill bit is lifted to the designed pile top, continuing stirring to reinforce the pile top;
and S3-4, lifting the multi-channel telescopic drill rod and the stirring pile drill bit after stirring is completed, and flushing with clear water.
Further, the construction process of the high-pressure jet grouting pile in the step S3 is as follows:
s3-1, mounting a multi-channel telescopic drill rod on a power head assembly, enabling a drill rod rotary joint of the power head assembly to be connected with a telescopic rod body of the multi-channel telescopic drill rod, and enabling a telescopic driving joint of the power head assembly to be connected with a transmission screw rod of the multi-channel telescopic drill rod;
s3-2, driving the high-pressure rotary jetting drill bit to rotate through the power head assembly, driving the high-pressure rotary jetting drill bit to drill by matching with the extension of the multi-channel telescopic drill rod and the downward movement of the drill frame assembly, simultaneously starting a curing agent high-pressure pump and a high-pressure air compressor, and jetting the curing agent and the high-pressure air from corresponding high-pressure nozzles of the high-pressure rotary jetting drill bit after passing through a multi-channel diverter, a pipe channel in the multi-channel telescopic drill rod and corresponding pipe cavities in the high-pressure rotary jetting drill bit to drill in a rotary cutting soil body;
S3-3, after the high-pressure rotary jet drill head is lifted to the designed pile top, continuing cutting and stirring to reinforce the pile head;
And S3-4, lifting the multi-channel telescopic drill rod and the high-pressure rotary jet drill bit after cutting and stirring are completed, and flushing with clear water.
Further, the construction process of the screw thread enlarged body steel pile in the step S3 is as follows:
S3-1, mounting the screw thread expansion body steel pile drill bit on the power head assembly through a steel pile joint, so that a drill rod rotary joint of the power head assembly can drive the screw thread expansion body steel pile drill bit to rotate;
S3-2, driving the screw-thread enlarged steel pile drill bit to drill in a rotary mode through the power head assembly, and driving the screw-thread enlarged steel pile drill bit to drill in implantation soil by driving the power head assembly to move downwards through the drill floor assembly;
s3-3, after the first section of the threaded expansion body steel pile drill bit is implanted, a steel pile extension joint or extension bar is installed between the threaded expansion body steel pile drill bit and the steel pile joint, so that the steel pile extension joint or extension bar is quickly connected with the threaded expansion body steel pile drill bit, drilling is continued until the designed pile length is reached, and the designed depth is reached.
And when the designed pile top is deeper from the bottom plate or the ground, the multi-channel telescopic drill rod is arranged on the power head assembly, the drill rod rotary joint of the power head assembly is connected with the telescopic rod body of the multi-channel telescopic drill rod, the telescopic driving joint of the power head assembly is connected with the transmission screw rod of the multi-channel telescopic drill rod, the last section of steel pile extension joint or extension rod is connected with the multi-channel telescopic drill rod, the multi-channel telescopic drill rod is used for rotating and pile feeding, and the screw thread expanded steel pile is fed to the designated design position.
Still further, the unit head assembly still includes the box, flexible drive hydraulic motor and drilling rod drive hydraulic motor have been put on the lateral wall of box respectively, flexible drive hydraulic motor passes through flexible drive transmission mechanism and flexible drive joint transmission connection, drilling rod drive hydraulic motor passes through drilling rod drive transmission mechanism and drilling rod rotary joint transmission connection.
Further, the telescopic rod body of the multi-channel telescopic drill rod comprises a first-stage fixed rod body, a middle telescopic rod body and a last-stage telescopic rod body, the transmission screw of the multi-channel telescopic drill rod comprises a first-stage screw rod and a middle transmission screw rod, the first-stage fixed rod body, the middle telescopic rod body and the last-stage telescopic rod body are sleeved together step by step from outside to inside, and the telescopic rod bodies of all stages are axially in rotation-stopping fit relative to the first-stage fixed rod body; the upper end of the first-stage fixed rod body can be connected with a drill rod rotary joint for driving the multi-channel telescopic drill rod to rotate, the upper end of the first-stage fixed rod body can be connected with a telescopic driving joint for driving the multi-channel telescopic drill rod to move in a telescopic way, a plurality of fluid channels which are communicated with corresponding diversion channels in the multi-channel diverter are arranged on the first-stage screw rod, the upper ends of the corrugated telescopic pipes are connected with the lower ends of the first-stage screw rods through the multi-channel rotary joint, the corrugated telescopic pipes form pipe channels which are in one-to-one correspondence with the fluid channels through the annular servomotor, and the pipe channels are communicated with corresponding channel ports at the lower ends of the final-stage telescopic rods through the inner ring sleeve.
Still further, the host assembly comprises a travelling mechanism, a working platform, a supporting leg assembly, a hydraulic driving system and a background control system, wherein the working platform is arranged on the travelling mechanism, the hydraulic driving system and the background control system are respectively integrated on the working platform, the drilling rig assembly is arranged on the front side of the working platform, and the supporting leg assembly is arranged on the outer side of the working platform;
The landing leg assembly comprises an oil cylinder support, a telescopic oil cylinder, a supporting plate and an opening fixer, wherein the oil cylinder support is fixed on a working platform, the telescopic oil cylinder is vertically arranged on the oil cylinder support, the supporting plate is fixed at the lower end of the telescopic oil cylinder, the opening fixer is arranged on the supporting plate, the opening fixer comprises a rotary oil cylinder and a rotary anchoring claw fixed at the lower end of an output shaft of the rotary oil cylinder, the output shaft of the rotary oil cylinder is provided with a dust collection channel, and a dust collection pipe joint communicated with the dust collection channel is arranged at the upper part of a cylinder body of the rotary oil cylinder.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:
(1) According to the limited micro-space pile foundation construction method based on the multifunctional pile machine, the multifunctional pile machine is utilized to realize that a plurality of pile foundation types can be constructed on one pile machine, and the power head with the multi-channel current divider and the multi-channel telescopic drill rod are matched, so that the pile machine can realize high-efficiency and environment-friendly pile foundation construction in a limited space, the adaptability and integration of equipment are improved, the continuous work in construction is reduced, the construction efficiency is improved, and the method can adapt to various geological conditions and construction requirements;
(2) According to the limited micro-space pile foundation construction method based on the multifunctional pile machine, in the construction process of the bored pile, the multi-channel telescopic drill rod can be used for carrying out concrete pouring in combination with the grouting guide pipe, so that the disassembly and assembly operations of one section of guide pipe are reduced, the difficulty of grouting from the bottom of a pile hole to the top in a limited micro-space is reduced, and the construction efficiency is improved;
(3) According to the limited micro-space pile foundation construction method based on the multifunctional pile machine, in the construction process of the bored pile, two fluid inlets and outlets are arranged up and down on a bored drill bit, the two fluid inlets and outlets are respectively communicated with corresponding pipe cavities, the fluid inlet and outlet at the lower part is arranged at a spiral wing plate of the bored drill bit, different bored mud circulation processes can be realized by plugging different fluid inlets and outlets, when the lower fluid inlet and outlet is plugged, mud reverse circulation can be realized, the pore forming speed is high, meanwhile, the problem that the wall of a hole is unstable and collapses due to mud scouring can be avoided;
(4) The invention relates to a limited micro-space pile foundation construction method based on a multifunctional pile machine, wherein a power head adopts a horizontally arranged double-drive hydraulic motor, so that the dimension of the power head in the height direction is reduced, the overall height of the pile machine can be further reduced under the condition of ensuring the effective stroke space of the pile machine, and the efficient and accurate construction operation in a limited space can be realized by matching a multi-channel telescopic drill rod;
(5) The invention relates to a limited micro-space pile foundation construction method based on a multifunctional pile machine, which is characterized in that a telescopic rod body of a multi-channel telescopic drill rod comprises a first-stage fixed rod body, a middle telescopic rod body and a last-stage telescopic rod body, a transmission screw rod of the multi-channel telescopic drill rod comprises a first-stage screw rod and a middle transmission screw rod, synchronous telescopic operation of the telescopic drill rod is realized by utilizing screw transmission of the screw rod and each stage of rod body, the control accuracy and stability of telescopic motion of the telescopic drill rod are ensured, and the verticality and precision of the construction drill rod are improved;
(6) The invention relates to a limited micro-space pile foundation construction method based on a multifunctional pile machine, which comprises a host assembly, a working platform, a supporting leg assembly, a hydraulic driving system and a background control system, wherein the hydraulic driving system and the background control system are respectively integrated on the working platform, and the limited micro-space pile foundation construction method has the advantages of compact structure, small occupied space, flexible movement, various applicable scenes, convenient construction and the like;
(7) The invention discloses a limited micro-space pile foundation construction method based on a multifunctional pile machine, which comprises an oil cylinder support, a telescopic oil cylinder, a support plate and an opening fixer, wherein the oil cylinder support is fixed on a working platform, the telescopic oil cylinder is vertically arranged on the oil cylinder support, the support plate is fixed at the lower end of the telescopic oil cylinder, the opening fixer is arranged on the support plate, the support plate can be conveniently controlled by utilizing a telescopic support leg structure, the contact area of the support plate can be increased, the support stability is improved, the opening fixer comprises a rotary oil cylinder and a rotary anchoring claw fixed at the lower end of an output shaft of the rotary oil cylinder, the rotary anchoring claw can be rapidly broken and anchored into a stratum, the ground grabbing force of a host machine is increased, the output shaft of the rotary oil cylinder is provided with a dust collection channel, the upper part of a cylinder body of the rotary oil cylinder is provided with a dust collection pipe joint communicated with the dust collection channel, dust can be sucked out and collected when the stratum is broken by the anchoring claw, and the environmental pollution problem caused by dust raising in a construction site is reduced.
Drawings
FIG. 1 is a schematic view of a construction scenario of a limited micro-space pile foundation construction method based on a multifunctional pile machine;
FIG. 2 is a schematic diagram of a three-dimensional structure of a multifunctional pile machine in the limited micro-space pile foundation construction method of the invention;
FIG. 3 is a schematic perspective view of a leg assembly of the multifunctional pile machine according to the present invention;
FIG. 4 is a schematic perspective view of an apertured holder for a leg assembly according to the present invention;
FIG. 5 is a schematic cross-sectional view of an apertured holder of the leg assembly of the present invention;
FIG. 6 is a schematic view of an angle perspective structure of a power head assembly of the multifunctional pile machine according to the present invention;
FIG. 7 is a schematic view of another perspective view of a power head assembly of a multi-functional pile driver according to the present invention;
FIG. 8 is a schematic cross-sectional view of a power head assembly of the multi-functional pile driver according to the present invention;
FIG. 9 is a schematic perspective view of an extended state of a multi-channel telescopic drill rod according to the present invention;
FIG. 10 is a schematic cross-sectional view of the multi-channel telescoping drill rod in an extended state;
FIG. 11 is a schematic cross-sectional view of a multi-channel telescoping drill rod in a contracted state;
FIG. 12 is a schematic diagram of a three-dimensional structure of a multifunctional pile driver according to the present invention;
Fig. 13 (a) is a construction state diagram of a construction step one of the bored pile according to the present invention;
fig. 13 (b) is a construction state diagram of a construction step two of the bored pile according to the present invention;
fig. 13 (c) is a construction state diagram of a construction step three of the bored pile according to the present invention;
fig. 13 (d) is a construction state diagram of a construction step four of the bored pile according to the present invention;
Fig. 13 (e) is a construction state diagram of a fifth construction step of the bored pile according to the present invention;
FIG. 14 is a schematic view of the reverse mud circulation of the drill bit of the present invention;
FIG. 15 is a schematic view of the mud reverse circulation + gas assist cutting of the drill bit of the present invention;
FIG. 16 is a schematic view of a three-dimensional structure of a multi-functional pile machine according to the present invention for use with a mixing pile drill;
fig. 17 (a) is a construction state diagram of a first construction step of the mixing pile according to the present invention;
fig. 17 (b) is a construction state diagram of a construction step two of the stirring pile according to the present invention;
FIG. 17 (c) is a construction state diagram of a third construction step of the mixing pile according to the present invention;
FIG. 18 (a) is a schematic perspective view of a multi-channel telescopic drill rod of the present invention used with a mixing pile drill bit;
FIG. 18 (b) is a schematic cross-sectional view of the multi-channel telescopic drill rod of the present invention in combination with a mixing pile drill bit;
FIG. 19 is a schematic view of a three-dimensional structure of a multifunctional pile machine according to the present invention, which is used in combination with a high-pressure jet grouting drill head;
FIG. 20 (a) is a construction state diagram of a construction step one of the high pressure jet grouting piles of the present invention;
FIG. 20 (b) is a construction state diagram of a construction step two of the high pressure jet grouting pile according to the present invention;
FIG. 20 (c) is a construction status diagram of a construction step three of the high pressure jet grouting pile according to the present invention;
FIG. 21 (a) is a schematic perspective view of a multi-channel telescopic drill rod of the present invention used with a high pressure rotary jet drill head;
FIG. 21 (b) is a schematic cross-sectional view of a multi-channel telescopic drill rod of the present invention in combination with a high pressure rotary jet drill head;
FIG. 22 is a schematic diagram of a three-dimensional structure of a multi-functional pile machine according to the present invention in combination with a screw-threaded enlarged steel pile drill;
FIG. 23 (a) is a construction state diagram showing a construction step one of the screw-enlarged steel pile according to the present invention;
FIG. 23 (b) is a construction state diagram of a second construction step of the screw-enlarged steel pile according to the present invention;
FIG. 23 (c) is a construction state diagram of a third construction step of the screw-enlarged steel pile according to the present invention;
FIG. 23 (d) is a construction state diagram of a fourth construction step of the screw-enlarged steel pile according to the present invention;
FIG. 23 (e) is a construction state diagram of a fifth construction step of the screw-enlarged steel pile according to the present invention;
FIG. 24 is a schematic perspective view of a multi-functional stake machine employing a collapsible robotic arm in accordance with the present invention;
fig. 25 is a schematic view of a construction scenario of a multifunctional pile machine employing a foldable mechanical arm according to the present invention.
Reference numerals in the schematic drawings illustrate:
100. A host assembly; 11, a walking mechanism; 12, a working platform; 13, leg assemblies, 131, cylinder brackets, 132, telescoping cylinders, 133, support plates, 134, perforated retainers, 1341, rotary cylinders, 1342, rotary anchor feet, 1343, suction channel, 1344, suction pipe joint, 14, hydraulic drive system, 15, rear floor control system, 200, mast lifting assembly, 200', collapsible mechanical arm assembly, 300, power head assembly, 31, casing, 32, telescoping drive hydraulic motor, 33, drill rod drive hydraulic motor, 34, multi-channel diverter, 34-1, rotary diverter seat, 34-2, channel pipe, 34-3, diversion channel, 35, drill rod rotary joint, 36, telescoping drive joint, 37, drill rod drive transmission mechanism, 38, telescoping drive transmission mechanism, 400, multi-channel telescoping drill rod, 41, first-stage fixed rod, 42, intermediate telescoping rod, 42-1, intermediate rod connection, 43, last-stage telescoping rod, 43-1, channel port, 44, stop guide rod, 45, first-stage screw, 45-1, channel, 46, intermediate drive transmission connection, 46-1, annular jet drill rod, 47, annular jet pump, drill rod, 48, drill bit, bore hole guide, bore hole, fluid jet drill bit, drilling tools, drilling, drilling, steel pile extension joint 540B, steel pile joint 540C, extension bar 600, high-pressure pump 700, wireless remote controller 800, multifunctional pump station 900, high-pressure air compressor.
Detailed Description
For a further understanding of the present invention, the present invention will be described in detail with reference to the drawings and examples.
Examples (example)
Referring to fig. 1 and 2, the method for constructing the limited micro-space pile foundation based on the multifunctional pile machine in the embodiment comprises the following construction steps:
s1, selecting a matched drilling tool according to the pile foundation type:
The pile foundation types at least comprise one of a bored pile, a stirring pile, a high-pressure jet grouting pile and a screw expansion body steel pile, the matched drilling tool comprises a corresponding process drill bit 500, the process drill bit 500 corresponds to the bored pile bit 510, the stirring pile drill bit 520, the high-pressure jet grouting drill bit 530 and the screw expansion body steel pile drill bit 540, and in the embodiment, the pile foundation types which can be implemented on the multifunctional pile machine at least comprise four types of the bored pile, the stirring pile, the high-pressure jet grouting pile and the screw expansion body steel pile, and the concrete type of the pile foundation can be determined according to geological conditions, design technology and the like.
S2, pile driver equipment is assembled and positioned:
referring to fig. 2, the pile machine comprises a main machine assembly 100, a drilling frame assembly, a power head assembly 300 and a multi-channel telescopic drill rod 400, wherein the main machine assembly 100 is used as a basic platform of a pile machine and plays a supporting role, the drilling frame assembly is arranged on the main machine assembly 100 and can be used for constructing pile foundations at a certain angle and is mainly used for drilling or lifting drilling tools, the power head assembly 300 is arranged on the drilling frame assembly and is used for driving the drilling tools to rotate, the multi-channel telescopic drill rod 400 is detachably arranged on the power head assembly 300 and can perform telescopic motion to match with drilling or lifting drilling, the operation of a connecting rod is reduced or avoided, a process drill bit 500 is directly or through the multi-channel telescopic drill rod 400 arranged on the power head assembly 300 and is used for realizing construction of different pile machine processes, and whether the multi-channel telescopic drill rod 400 is required or not can be determined according to specific construction steps. Wherein,
Referring to fig. 6 to 8, the power head assembly 300 has a multi-channel splitter 34, and independently driven drill pipe rotary joints 35 and telescopic drive joints 36, the drill pipe rotary joints 35 are used for driving the rotary motion of the process drill bit 500, the telescopic drive joints 36 are used for controlling the telescopic motion of the multi-channel telescopic drill pipe 400, and the multi-channel splitter 34 is arranged at the upper end of the telescopic drive joints 36 and is used for connecting a surface fluid system;
Referring to fig. 9 to 11, the multi-channel telescopic drill rod 400 includes a plurality of telescopic rods sleeved together step by step from outside to inside, a driving screw for controlling telescopic movement of the telescopic rods, and a corrugated telescopic tube 48 for establishing channels, wherein the driving screw is located inside the telescopic rods, a plurality of fluid channels 45-1 communicated with corresponding diversion channels 34-3 in the multi-channel diverter 34 are arranged on the driving screw located at the center, the corrugated telescopic tube 48 is sleeved together from inside to outside to form a plurality of tube channels, and the upper ends of the corrugated telescopic tubes 48 are connected with the driving screw located at the center through the multi-channel rotary joints 48-1 to correspondingly communicate the corresponding tube channels with the fluid channels 45-1 one by one. The drill rod rotary joint 35 of the power head assembly 300 can be connected with an outermost telescopic rod body for driving the multi-channel telescopic drill rod 400 to rotate, and the telescopic driving joint 36 of the power head assembly 300 can be connected with a transmission screw rod for driving the multi-channel telescopic drill rod 400 to move in a telescopic manner.
The pile driver equipment and the auxiliary equipment are transported to a designated construction position and connected with each pipeline and the line, and meanwhile, the host assembly 100 is fixed, and the process drill bit 500 is adjusted to a construction angle through the drill frame assembly. Referring to fig. 1, the auxiliary equipment mainly comprises a high-pressure pump 600, a wireless remote controller 700, a multifunctional pump station 800 and a high-pressure air compressor 900, wherein the multifunctional pump station 800 comprises a hydraulic pump station and a vacuum pump station which are integrated on a mobile platform, and the wireless remote controller 700 can be used for remotely controlling the construction of a pile machine. Different auxiliary equipment can be selected for construction according to different construction processes. Before construction, the corresponding equipment should be tested to check whether the equipment and pipelines are normal.
S3, pile foundation construction:
After the corresponding process drill bit 500 is installed, centering debugging is carried out, and corresponding pile machine equipment and auxiliary equipment are started according to different pile foundation processes to carry out pile foundation construction. Wherein,
Referring to fig. 12, 13 (a) to 13 (e), the construction process of the bored pile is as follows:
S3-1, mounting the multi-channel telescopic drill rod 400 on the power head assembly 300, enabling the drill rod rotary joint 35 of the power head assembly 300 to be connected with a telescopic rod body of the multi-channel telescopic drill rod 400, enabling the telescopic driving joint 36 of the power head assembly 300 to be connected with a transmission screw rod of the multi-channel telescopic drill rod 400, mounting the drilling bit 510 at the lower end of the multi-channel telescopic drill rod 400, enabling a pipe cavity in the drilling bit 510 to be communicated with a corresponding pipe channel in the multi-channel telescopic drill rod 400, and forming a state shown in fig. 13 (a);
S3-2, as shown in FIG. 13 (b), after the pile casing is installed, the drilling bit 510 is driven to rotate by the power head assembly 300, and the drilling bit 510 is driven to drill by matching with the extension of the multi-channel telescopic drill rod 400 and the downward movement of the power head assembly 300 by the drill frame assembly, meanwhile, the drilling mud circulation is started by auxiliary equipment, after the set drilling depth is reached, the drilling bit 510 is controlled to reversely rotate and lift to the ground;
s3-3, as shown in fig. 13 (d), after the drilling is finished, the drilling bit 510 is disassembled, and a grouting guide tube 510A is arranged at the lower end of the multi-channel telescopic drill rod 400;
S3-4, after the reinforcement cage is installed in place, the grouting guide tube 510A is lowered by using the extension of the multi-channel telescopic drill rod 400 and the downward movement of the drill frame assembly to drive the power head assembly 300, the multi-channel diverter 34 is connected with a concrete pump, and concrete is poured upwards from the bottom of the pile hole, as shown in fig. 13 (e);
and S3-5, after the pouring is finished, lifting the multi-channel telescopic drill rod 400 and the grouting guide tube 510A, and flushing with clean water.
The subsequent construction steps are similar to the prior art, and after the initial setting of the concrete, the pile casing can be pulled out, and the side gap between the cast-in-place pile and the soil body is filled by grouting.
Referring to fig. 14 and 15, in the present embodiment, two fluid inlets and outlets 513 are specifically disposed up and down on the drill bit 510, the two fluid inlets and outlets 513 are respectively communicated with corresponding lumens, the fluid inlet and outlet 513 disposed at the lower portion is disposed at the spiral wing plate 512 of the drill bit 510, the bottom of the spiral wing plate 512 is provided with a drill tip 511, the bottom of the drill tip 511 is provided with a slurry channel, and the drilling slurry circulation has the following two modes:
A. As shown in fig. 14, the fluid inlet and outlet 513 at the lower part is closed by a plug 514, circulating slurry enters through the multi-channel diverter 34 and sequentially passes through the pipe channel in the multi-channel telescopic drill rod 400 and the corresponding pipe cavity in the drilling bit 510, and then is sprayed out from the bottom of the drilling bit 510, the drilling bit 510 cuts soil body and mixes with the circulating slurry to form a chip slurry mixed solution, the chip slurry mixed solution enters through the fluid inlet and outlet 513 at the upper part and is sequentially pumped to the ground through the corresponding pipe cavity in the drilling bit 510, the pipe channel in the multi-channel telescopic drill rod 400 and the multi-channel diverter 34 by a vacuum pump, the slurry circulation can be called reverse circulation, the pore forming speed is high, and meanwhile, the problem that the pore wall is unstable and collapses caused by slurry flushing can be avoided.
B. As shown in fig. 15, the upper fluid inlet 513 is closed by a plug 514, the circulating slurry is fed into the borehole by reverse circulation (the reverse circulation is that slurry flows into the hole from the outside slurry pool), the mixture of the chip slurry enters at the bottom of the borehole through the bottom of the drill bit 510, is pumped to the ground by a vacuum pump after passing through the corresponding lumen in the drill bit 510, the tube passage in the multi-passage telescopic drill rod 400 and the multi-passage diverter 34 in sequence, and simultaneously high-pressure gas is injected by a high-pressure air compressor through the multi-passage diverter 34, the tube passage in the multi-passage telescopic drill rod 400, the corresponding lumen in the drill bit 510 and the lower fluid inlet 513, and the spiral wing plate 512 is assisted to cut the soil and prevent the paste drilling. And high-pressure gas is sprayed by using a lower fluid inlet and outlet under the reverse circulation process to assist in cutting soil, so that the soil is prevented from wrapping a drill bit, and the drilling efficiency is improved.
Referring to fig. 16, 17 (a) to 17 (c), the construction process of the mixing pile is as follows:
S3-1, mounting the multi-channel telescopic drill rod 400 on the power head assembly 300, enabling a drill rod rotary joint 35 of the power head assembly 300 to be connected with a telescopic rod body of the multi-channel telescopic drill rod 400, enabling a telescopic driving joint 36 of the power head assembly 300 to be connected with a transmission screw rod of the multi-channel telescopic drill rod 400, mounting a stirring pile drill bit 520 at the lower end of the multi-channel telescopic drill rod 400, enabling a pipe cavity in the stirring pile drill bit 520 to be communicated with a corresponding pipe channel in the multi-channel telescopic drill rod 400 to form a state shown in FIG. 17 (a), enabling the stirring pile drill bit 520 to be provided with stirring drill tips 521 and a plurality of stirring blades 522 distributed on the side face of the stirring pile drill bit 520, and enabling at least two fluid nozzles 523 which are axially arranged at intervals and are communicated with the corresponding pipe cavity to be further arranged on the stirring pile drill bit 520;
S3-2, as shown in FIG. 17 (b), after centering and debugging, driving the stirring pile drill bit 520 to rotate through the power head assembly 300, driving the stirring pile drill bit 520 to drill through the extension of the multi-channel telescopic drill rod 400 and the downward movement of the drill frame assembly driving the power head assembly 300, simultaneously starting the curing agent high-pressure pump and the high-pressure air compressor, and after passing through the multi-channel splitter 34, the pipe channels in the multi-channel telescopic drill rod 400 and the corresponding pipe cavities in the stirring pile drill bit 520, jetting the curing agent and the high-pressure air from the corresponding fluid nozzles 523 in the stirring pile drill bit 520 to perform rotary stirring drilling;
s3-3, after the stirring pile drill 520 is lifted to the designed pile top, continuing stirring to strengthen the pile top;
And S3-4, after the stirring is completed, lifting the multi-channel telescopic drill rod 400 and the stirring pile drill bit 520, and flushing with clear water.
If the movement amounts of the multi-channel telescopic drill rod 400, the power head assembly 300 and the drill floor assembly still cannot meet the requirement of designing the pile length of the mixing pile, a mixing pile extension drill rod 520A can be additionally arranged between the mixing pile drill bit 520 and the multi-channel telescopic drill rod 400.
Referring to fig. 19, 20 (a) to 20 (c), the construction process of the high pressure jet grouting pile is as follows:
S3-1, mounting the multi-channel telescopic drill rod 400 on the power head assembly 300, enabling the drill rod rotary joint 35 of the power head assembly 300 to be connected with a telescopic rod body of the multi-channel telescopic drill rod 400, enabling the telescopic driving joint 36 of the power head assembly 300 to be connected with a transmission screw rod of the multi-channel telescopic drill rod 400, mounting the high-pressure rotary spraying drill head 530 at the lower end of the multi-channel telescopic drill rod 400, enabling a pipe cavity in the high-pressure rotary spraying drill head 530 to be communicated with a corresponding pipe channel in the multi-channel telescopic drill rod 400 to form a state shown in fig. 20 (a), and enabling the high-pressure rotary spraying drill head 530 to be provided with a rotary spraying drill point 531 and at least one high-pressure nozzle 532 communicated with the corresponding pipe cavity as shown in fig. 21 (a) and 21 (b);
S3-2, driving the high-pressure rotary jetting drill bit 530 to rotate through the power head assembly 300, driving the high-pressure rotary jetting drill bit 530 to drill by matching with the extension of the multi-channel telescopic drill rod 400 and the downward movement of the power head assembly driven by the drill frame assembly, simultaneously starting a curing agent high-pressure pump and a high-pressure air compressor, injecting curing agent and high-pressure air from corresponding high-pressure nozzles 532 of the high-pressure rotary jetting drill bit 530 after passing through corresponding tube cavities in the multi-channel diverter 34 and the multi-channel telescopic drill rod 400 and the high-pressure rotary jetting drill bit 530, and performing rotary cutting soil drilling;
s3-3, after the high-pressure rotary jet drill head 530 is lifted to the designed pile top, continuing cutting and stirring to strengthen the pile head;
And S3-4, after the cutting and stirring are completed, lifting the multi-channel telescopic drill rod 400 and the high-pressure jet grouting drill head 530, and flushing with clear water.
If the movement amounts of the multi-channel telescopic drill rod 400, the power head assembly 300 and the drill carriage assembly still cannot meet the requirement of designing the pile length of the jet grouting pile, a jet grouting extension drill rod 530A can be additionally arranged between the high-pressure jet grouting drill head 530 and the multi-channel telescopic drill rod 400, as shown in fig. 20 (b) and 20 (c).
Referring to fig. 22 and 23 (a) to 23 (e), the construction process of the screw-enlarged steel pile is as follows:
s3-1, as shown in FIG. 23 (a), a screw thread expanding body steel pile drill bit 540 is arranged on the power head assembly 300 through a steel pile joint 540B, so that a drill rod rotary joint 35 of the power head assembly 300 can drive the screw thread expanding body steel pile drill bit 540 to rotate;
s3-2, as shown in FIG. 23 (b), driving the screw-type enlarged steel pile drill bit 540 to drill in a rotary manner through the power head assembly 300, and driving the screw-type enlarged steel pile drill bit 540 to drill in the implanted soil by driving the power head assembly 300 to move downwards through the drill floor assembly;
S3-3, after the first section of the screw thread expanding body steel pile drill bit 540 is implanted, a steel pile extension section 540A or an extension rod 540C is installed between the screw thread expanding body steel pile drill bit 540 and a steel pile joint 540B (as in the case of the steel pile extension section 540A and the extension rod 540C in the figure 23 (C)) so that the steel pile extension section 540A or the extension rod 540C is quickly connected with the screw thread expanding body steel pile drill bit 540, and drilling is continued until the designed pile length is reached and the designed depth is reached.
Referring to fig. 23 (d) and 23 (e), when the design pile top is deep from the floor or the ground, the multi-channel telescopic drill pipe 400 is mounted on the power head assembly 300, the drill pipe rotary joint 35 of the power head assembly 300 is connected to the telescopic rod body of the multi-channel telescopic drill pipe 400, the telescopic driving joint 36 of the power head assembly 300 is connected to the driving screw of the multi-channel telescopic drill pipe 400, the last section of the steel pile extension section 540A or the extension bar 540C is connected to the multi-channel telescopic drill pipe 400, the pile is rotated by extension of the multi-channel telescopic drill pipe 400, and the screw-extended steel pile is delivered to the designated design position. In addition, two steel pipes can be arranged in the screw-thread enlarged body steel pile drill bit 540 and the corresponding steel pile extension joint 540A, steel pile joint 540B and extension bar 540C according to design requirements to convey the curing agent and the high-pressure gas, and the curing agent high-pressure pump and the high-pressure air compressor can be started to convey the curing agent and the high-pressure gas while the screw-thread enlarged body steel pile drill bit 540 drills, so that the strength of the screw-thread enlarged body steel pile is enhanced.
The screw-thread enlarged body steel pile drill bit 540, the steel pile extension joint 540A, the extension bar 540C and the steel pile joint 540B can be in plug-in fit with non-circular section shaft holes, such as regular hexagons and the like, so that torque transmission is realized, and the screw-thread enlarged body steel pile drill bit 540 can be conveniently separated from the steel pile joint 540B after being implanted.
Referring to fig. 6 to 8, in the present embodiment, the power head assembly 300 further includes a case 31, and a telescopic driving hydraulic motor 32 and a drill rod driving hydraulic motor 33 are respectively horizontally disposed on a side wall of the case 31, the telescopic driving hydraulic motor 32 is in transmission connection with the telescopic driving joint 36 through a telescopic driving transmission mechanism 38, and the drill rod driving hydraulic motor 33 is in transmission connection with the drill rod rotating joint 35 through a drill rod driving transmission mechanism 37. The box 31 is mounted on the drill rig assembly, and the telescopic drive hydraulic motor 32, the drill rod drive hydraulic motor 33, the multi-channel flow divider 34, the drill rod rotary joint 35 and the telescopic drive joint 36 are all arranged on the box 31. The multi-channel diverter 34 is arranged at the upper end of the telescopic driving joint 36 and is used for connecting a ground fluid pipeline, and inputting into the process drill bit 500 or discharging fluid media through the process drill bit 500 is realized according to different pile foundation construction processes. The drill rod swivel 35 is located outside the telescopic drive joint 36, both preferably coaxially disposed. In the present embodiment, the telescopic driving hydraulic motor 32 and the drill rod driving hydraulic motor 33 are respectively mounted on the side wall of the casing 31 in a flat manner, and the telescopic driving hydraulic motor 32 and the drill rod driving hydraulic motor 33 are disposed on both sides of the casing 31. The hydraulic motor adopts a horizontally-arranged mounting structure, so that the size of the power head in the height direction is reduced, the overall height of the pile machine can be further reduced under the condition of ensuring the effective stroke space of the pile machine, and efficient and accurate construction operation can be realized in a limited space by matching with the multi-channel telescopic drill rod. The double hydraulic motors are adopted for propulsion, so that the mechanical structure is simple, and the maintenance is convenient. The drill rod driving transmission mechanism 37 and the telescopic driving transmission mechanism 38 are both planetary gear reduction mechanisms, so that the structure is compact, the transmission efficiency is high, and the bearing load is large. The planetary gear speed reducing mechanism is an existing speed reducing mechanism, so the specific structural principle of the planetary gear speed reducing mechanism is not expanded again. As shown in fig. 8, the telescopic driving joint 36 is a hollow rotating shaft, the upper end of the telescopic driving joint 36 extends out of the box 31, the multi-channel diverter 34 comprises a rotary diverting seat 34-1 and a channel tube 34-2, the channel tube 34-2 is sleeved on the inner side of the telescopic driving joint 36 to form a diverting channel 34-3 concentrically distributed in a ring shape, the rotary diverting seat 34-1 is rotatably mounted on the upper end of the telescopic driving joint 36, and a pipe joint communicated with the corresponding diverting channel 34-3 is arranged on the rotary diverting seat 34-1. The rotary sealing annular distribution cavities are further arranged at the corresponding pipe joints, and each pipe joint can be communicated with the corresponding distribution channel 34-3 through the corresponding annular distribution cavity, so that the rotary distribution seat 34-1 and the pipe joint on the rotary distribution seat can not rotate relatively in the rotation process of the telescopic driving joint 36, fluid distribution is realized, and the winding of a fluid pipeline is prevented.
Referring to fig. 9 to 11, in this embodiment, the telescopic rod body of the multi-channel telescopic drill rod 400 includes a first-stage fixed rod body 41, a middle telescopic rod body 42 and a final-stage telescopic rod body 43, the driving screw of the multi-channel telescopic drill rod 400 includes a first-stage screw rod 45 and a middle driving screw rod 46, the first-stage fixed rod body 41, the middle telescopic rod body 42 and the final-stage telescopic rod body 43 are sleeved together step by step from outside to inside, and the telescopic rod bodies of each stage are axially rotation-locked with respect to the first-stage fixed rod body 41, i.e. the middle telescopic rod body 42 and the final-stage telescopic rod body 43 of each stage can only relatively move in a telescopic manner but cannot relatively rotate, the diameters of the rod bodies gradually decrease from the first-stage fixed rod body 41 to the final-stage telescopic rod body 43, and the first-stage screw rod 45 and the middle driving screw rod 46 are arranged on the first-stage fixed rod body 41, The inner sides of the middle telescopic rod body 42 and the final telescopic rod body 43 are sleeved with one-stage screw rods 45 and each-stage middle transmission screw rod 46 from inside to outside in a threaded manner, namely, the diameters of the one-stage screw rods 45 and each-stage middle transmission screw rods 46 are increased step by step, each-stage middle transmission screw rod 46 and the corresponding-stage middle telescopic rod body 42 are connected in a relative rotation mode through an annular servomotor 47, so that the middle transmission screw rods 46 and the corresponding-stage middle telescopic rod body 42 can relatively rotate and cannot axially move, and the one-stage screw rods 45 and each-stage middle transmission screw rods 46 are in threaded fit with the corresponding next-stage middle telescopic rod body 42 and the corresponding-stage telescopic rod body 43, and the one-stage screw rods 45 are driven to rotate to drive each-stage telescopic rod bodies to synchronously axially telescopic relative to the one-stage fixed rod body 41. The primary screw 45 and the primary fixed rod 41 can be relatively rotated and the axial movement is also restricted. The upper end of the primary fixed rod 41 can be connected with the drill rod rotary joint 35 for driving the multi-channel telescopic drill rod 400 to rotate, and the upper end of the primary screw 45 can be connected with the telescopic driving joint 36 for driving the multi-channel telescopic drill rod 400 to move in a telescopic manner. When the expansion driving joint 36 drives the first-stage screw 45 to rotate, the second-stage middle telescopic rod body 42 axially moves on the first-stage screw 45 to drive the same-stage middle driving screw 46 to axially move together, and the second-stage middle driving screw 46 is in threaded fit with the first-stage screw 45 and simultaneously drives the next-stage middle telescopic rod body 42 to axially move while simultaneously driving the next-stage middle driving screw 46 to axially move, so that the transmission is performed step by step until the final-stage telescopic rod body 43 is driven to axially move. in this way, the middle telescopic rod body 42 and the last telescopic rod body 43 of each stage can synchronously and axially move in a telescopic manner relative to the first-stage fixed rod body 41, the accuracy and stability of telescopic movement control of the telescopic drill rod are ensured, and the verticality and precision of the construction drill rod are improved. The number of intermediate telescoping rods 42 and intermediate drive screws 46 are equal and the specific number can be determined according to the telescoping travel requirements. The primary screw 45 is provided with a plurality of fluid channels 45-1 communicated with the corresponding flow dividing channels 34-3 in the multi-channel flow divider 34, and specifically, the fluid channels 45-1 are at least provided with two channels from inside to outside on the primary screw 45, and each fluid channel 45-1 is distributed annularly from the center to the outside. The upper end of the bellows 48 is connected with the lower end of the primary screw 45 through a multi-channel rotary joint 48-1, so that the primary screw 45 can freely rotate relative to the bellows 48, the connection tightness of each channel is maintained, the bellows 48 is sleeved from inside to outside to form pipe channels corresponding to the fluid channels 45-1 one by one, and each pipe channel is communicated with a corresponding channel port 43-1 at the lower end of the final-stage telescopic rod body 43. That is, the central lumen of the innermost bellows 48 is a single fluid passage, the annular interlayers between adjacent bellows 48 are a single fluid passage, and the number of fluid passages can be determined based on the number of annular sleeves of bellows 48. Bellows 48 described above may be made of a high strength material to withstand the pressure of high pressure fluid. The multi-channel rotary joint 48-1 is similar to existing rotary joints, achieves relative rotation of connected pipelines and can be used for conveying fluids such as gas, liquid and the like. The corrugated telescopic pipes sleeved together are utilized to construct a multi-fluid channel in the telescopic drill rod, so that the telescopic drill rod is simple and compact in structure and convenient to manufacture and implement, and the multi-fluid channel is built in the telescopic drill rod, so that the telescopic drill rod can be matched with various process drill bits, and the applicability of the telescopic drill rod is improved.
Referring to fig. 10, in the multi-channel telescopic drill rod 400, the upper ends of the intermediate driving screws 46 are respectively provided with a screw connecting portion 46-1, the upper ends of the intermediate telescopic rod bodies 42 are respectively provided with an intermediate rod connecting portion 42-1, the screw connecting portions 46-1 are sleeved outside the corresponding intermediate rod connecting portions 42-1, and the annular servomotor 47 is arranged between the corresponding screw connecting portions 46-1 and the intermediate rod connecting portions 42-1 so as to realize axial connection and relative rotation of the screw connecting portions 46-1 and the intermediate rod connecting portions 42-1. The diameter of the screw rod connecting portion 46-1 is slightly larger than that of the middle driving screw rod 46, the cross section of the middle rod connecting portion 42-1 is in an inverted U shape, the inner free end of the middle rod connecting portion 42-1 is sleeved on the inner side of the screw rod connecting portion 46-1, and synchronous telescopic movement of the telescopic rod body can be skillfully achieved by utilizing the inner free end of the middle rod connecting portion 42-1 while the screw rod connecting portion 46-1 is connected with the middle rod connecting portion 42-1. The annular servomotor 47 is a circular structural member, such as a steel ring, and corresponding annular grooves are respectively arranged between the screw connecting portion 46-1 and the intermediate rod connecting portion 42-1, and the annular servomotor 47 is located in the annular groove, so that the intermediate telescopic rod 42 and the intermediate transmission screw 46 of corresponding stages can be axially connected together to transmit axial force, and meanwhile free rotation of the intermediate telescopic rod and the intermediate transmission screw can be ensured. Of course, the ring servomotor 47 may be a plurality of steel balls distributed annularly, etc. In addition, in the present embodiment, the first-stage fixing rod 41, the middle telescopic rod 42 and the last-stage telescopic rod 43 are all cylindrical structures, and the rotation stopping guide ribs 44 are disposed between the first-stage fixing rod 41 and the adjacent middle telescopic rod 42, between the middle telescopic rods 42 at different stages, and between the last-stage telescopic rod 43 and the adjacent middle telescopic rod 42. The rotation stopping guide ribs 44 are in sliding fit with the corresponding guide grooves, so that the rod bodies of all stages can smoothly stretch and retract, and relative rotation is prevented. The primary screw 45 is a hollow screw, and the fluid channel 45-1 is formed by concentric tubes that are sleeved inside the primary screw 45 layer by layer. The concentric pipes are spaced from the inner wall of the primary screw 45 and adjacent concentric pipes are connected together by spacer blocks, so that the smoothness of the formed annular fluid channel 45-1 is ensured, and the formed fluid channel 45-1 is convenient to correspond to the pipe channels formed by the corrugated expansion pipes 48 one by one through the multi-channel rotary joint 48-1.
Referring to fig. 2 to 5, in the multi-functional pile machine of the present embodiment, the host assembly 100 includes a traveling mechanism 11, a working platform 12, a leg assembly 13, a hydraulic driving system 14 and a background control system 15, the working platform 12 is mounted on the traveling mechanism 11, and can drive the whole pile machine to move by the traveling mechanism 11, the traveling mechanism 11 preferably adopts a crawler-type traveling structure capable of moving in a complex environment, and the working platform 12 preferably adopts a rotating platform capable of horizontally rotating relative to the traveling mechanism 11, so as to facilitate adjustment of a construction direction and improve construction flexibility of the pile machine. The hydraulic driving system 14 and the background control system 15 are respectively integrated on the working platform 12, the hydraulic driving system 14 mainly comprises a hydraulic oil tank, a hydraulic pump station, a hydraulic vacuum pump, a hydraulic control console, corresponding valve groups and pipelines and the like, and the background control system 15 mainly comprises an electrical control cabinet and the like. The hydraulic driving system 14 and the background control system 15 are respectively integrated on the working platform, so that the hydraulic driving system has the advantages of compact structure, small occupied space, flexible movement, various applicable scenes, convenient construction and the like in a limited space. In addition, a drill rig assembly is mounted on the front side of the work platform 12 and a leg assembly 13 is mounted on the outside of the work platform 12. Preferably, the leg assemblies 13 are provided in two groups on each of the left and right sides of the work platform 12. Referring to fig. 3, the leg assembly 13 includes a cylinder bracket 131, a telescopic cylinder 132, a support plate 133, and a hole fixer 134, wherein the cylinder bracket 131 is fixed on the working platform 12, the telescopic cylinder 132 is vertically installed on the cylinder bracket 131, the support plate 133 is fixed at the lower end of the telescopic cylinder 132, and the hole fixer 134 is installed on the support plate 133. The main machine can be firmly fixed on the ground by using the hole fixing device 134 on the supporting leg assembly 13, so that the torque generated by the large-torque power head can be effectively overcome, the output torque of the pile machine is effectively improved, the construction efficiency is improved, and the contradiction problem between the existing small-space pile machine and the large-torque requirement is solved. The perforated holder 134 may be provided in plurality on the support plate 133. As shown in fig. 4 and 5, the hole-opening fixer 134 includes a rotary cylinder 1341 and a rotary anchoring claw 1342 fixed at the lower end of the output shaft of the rotary cylinder 1341, the rotary anchoring claw 1342 is provided with an alloy cutting tool, the rotary cylinder 1341 drives the rotary anchoring claw 1342 to rotate to crush the ground, and the rotary anchoring claw 1342 can be anchored into the ground along with the depression of the telescopic cylinder 13, so that the rotary anchoring claw can be quickly broken and anchored into the stratum, and the host ground gripping force is increased. The output shaft of the rotary cylinder 1341 has a dust suction channel 1343, and a dust suction pipe joint 1344 communicating with the dust suction channel 1343 is provided at the upper part of the body of the rotary cylinder 1341. The upper part of the cylinder body of the rotary oil cylinder 1341 is sleeved on the output shaft, the dust collection pipe joint 1344 is arranged on the upper part of the cylinder body and has a certain interval with the upper end of the output shaft of the rotary oil cylinder 1341, so that the output shaft can freely rotate and the dust collection channel 1343 is kept unblocked. By adopting the design, the anchoring claws can suck out and collect dust while breaking the stratum, so that the problem of environmental pollution caused by dust emission in a construction site is reduced. The rotary anchoring claw 1342 can adopt a four-petal structure, and when the rotary anchoring claw 1342 is operated, the rotary oil cylinder 1341 (or a hydraulic motor) drives the four-petal rotary anchoring claw 1342 with alloy to perform high-speed rotary cutting on the ground, and when the ground is cut, the vacuum pump sucks the scraps formed by the rotary anchoring claw 1342 through the dust suction channel 1343, so that the environment is prevented from being polluted. In addition, an expansion cylinder for driving the rotary anchoring claw 1342 to expand can be further arranged on the hole fixer 134, after the drill hole is formed, the expansion cylinder is pushed downwards to press the four-petal rotary anchoring claw 1342 to expand and tightly push, so that the host is firmly fixed on the ground. In step S2 of the pile foundation construction method, the main unit assembly 100 is supported on the ground by the leg assembly 13 and is firmly connected to the ground by the hole fixing device 134 to overcome the large output torque of the power head. Likewise, after construction is completed, the hole holder 134 is released and the entire support plate 133 is lifted to facilitate movement of the host assembly 100 to the next pile location for construction.
In this embodiment, the drill frame assembly may be the mast drill lifting assembly 200 or the foldable mechanical arm assembly 200', and drill frames with different structural forms may be selected according to construction space. The structure of the mast drill lifting assembly 200 shown in fig. 2 has the advantages of small occupied area, light weight, labor saving, convenient maintenance and the like, and mainly comprises a main mast, a main mast clamp, a clamp cylinder, a hydraulic winch and the like, wherein the main mast clamp is arranged on a working platform 12 through a large arm and the cylinder, the large arm and the cylinder can be used for controlling the main mast to form a pile included angle, the main mast is arranged on the main mast clamp, the clamp cylinder clamps and fixes the main mast, the hydraulic winch is arranged on the main mast and is connected with a power head assembly 300, a box body 31 of the power head assembly 300 is slidably arranged on the main mast, and the lifting motion of the main mast can be controlled by the hydraulic winch. Fig. 24 shows a structural form of a foldable mechanical arm assembly 200', fig. 24 shows a construction scene of a multifunctional pile machine in a long and narrow space by adopting a foldable mechanical arm, the foldable mechanical arm assembly 200' can extend into the long and narrow space for construction, construction requirements of some special scenes are met, the foldable mechanical arm assembly mainly comprises 2-3 sections of foldable arms, a hydraulic cylinder is used for controlling a rotation angle, the structure is similar to that of an excavating arm of the existing excavator, when the foldable mechanical arm assembly 200 'is adopted, a box body 31 of a power head assembly 300 is hinged at the free end of the foldable mechanical arm assembly 200', and the relative angle between the two can be controlled by adopting the hydraulic cylinder. The mast lift assembly 200 and the collapsible robotic arm assembly 200' described above are similar to the prior art and the specific structure and principles of operation thereof will not be described in detail herein.
According to the limited micro-space pile foundation construction method based on the multifunctional pile machine, multiple pile foundation type construction can be carried out on one pile machine by utilizing the multifunctional pile machine, and the pile machine can be used for realizing efficient and environment-friendly pile foundation construction in a limited space by matching with the power head with the multi-channel current divider and the multi-channel telescopic drill rod, so that the adaptability and integration of equipment are improved, continuous work in construction is reduced, the construction efficiency is improved, and multiple geological conditions and construction requirements can be met. The pile foundation construction method can effectively solve the problems existing in the existing construction method, improves the construction efficiency and quality, reduces the influence on the environment, and provides more reliable support for urban building and infrastructure construction.
The invention and its embodiments have been described above schematically, without limitation, and the actual construction is not limited to this, as it is shown in the drawings, which are only one of the embodiments of the invention. Therefore, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical scheme are not creatively devised without departing from the gist of the present invention, and all the structural manners and the embodiments belong to the protection scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411360266.7A CN119266207A (en) | 2024-09-27 | 2024-09-27 | A limited micro-space pile foundation construction method based on a multifunctional pile driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411360266.7A CN119266207A (en) | 2024-09-27 | 2024-09-27 | A limited micro-space pile foundation construction method based on a multifunctional pile driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119266207A true CN119266207A (en) | 2025-01-07 |
Family
ID=94106589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411360266.7A Pending CN119266207A (en) | 2024-09-27 | 2024-09-27 | A limited micro-space pile foundation construction method based on a multifunctional pile driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119266207A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119102495A (en) * | 2024-09-27 | 2024-12-10 | 江苏建院营造股份有限公司 | A multifunctional pile driver in limited micro space |
-
2024
- 2024-09-27 CN CN202411360266.7A patent/CN119266207A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119102495A (en) * | 2024-09-27 | 2024-12-10 | 江苏建院营造股份有限公司 | A multifunctional pile driver in limited micro space |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104763328B (en) | A kind of hydraulic pressure reaming circulation drilling machine and its reaming pile constructing process | |
| US20110110727A1 (en) | Jet grouting apparatus for confined spaces and rapid mobilization requirements | |
| CN110331936B (en) | Combined drilling bottom-expanding pile-planting construction method | |
| CN119266207A (en) | A limited micro-space pile foundation construction method based on a multifunctional pile driver | |
| CN206903582U (en) | It may move double-arm rock bolting jumbo | |
| CN110172969B (en) | Construction method of quadruple pipe high-pressure jet grouting pile | |
| CN216515576U (en) | Hole guiding, reaming and piling device for bridge erecting pile driver | |
| CN110306542B (en) | Construction method of cement concrete composite pile with high-pressure cement soil as inner core | |
| KR101613289B1 (en) | Ground excavating device having function of auto up and down of excavating rod for construction continued wall preventing water flowing of underground | |
| JP3247840U (en) | Vertical simple drilling system | |
| CN119102495A (en) | A multifunctional pile driver in limited micro space | |
| CN113529739B (en) | Coaxial expansion assembled support, shaftless rotary sprayer and corresponding construction method | |
| CN215052925U (en) | Large-diameter three-pipe rotary spraying stirring pile device | |
| CN210530745U (en) | Combined drilling bottom-expanding pile-planting system | |
| CN116480273A (en) | An emergency small jet drilling rig | |
| CN219864903U (en) | Static drilling root planting pile construction equipment | |
| CN114541390A (en) | Cast-in-place pile construction method | |
| CN206815422U (en) | Guide rod type hydraulic power cuts chute forming machine | |
| CN116733369B (en) | Hole forming equipment for bored pile in narrow space of cavity and operation method thereof | |
| KR970007027Y1 (en) | Oga screw rod of ground excavator which supplies two kinds of fluids to different pipes | |
| CN116752920B (en) | Core-penetrating split-type drilling-while-drilling device and bored pile drilling equipment | |
| CN118110419B (en) | Full-space drilling and injecting integrated device | |
| CN219671348U (en) | Precast pile core cleaning device | |
| CN222332692U (en) | Inclined static pressure pile pressing equipment | |
| KR101231426B1 (en) | System for contruction in the water and device for rising control and movement for being used to the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |