WO2014063556A1 - 引孔式静压桩机 - Google Patents

引孔式静压桩机 Download PDF

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Publication number
WO2014063556A1
WO2014063556A1 PCT/CN2013/084480 CN2013084480W WO2014063556A1 WO 2014063556 A1 WO2014063556 A1 WO 2014063556A1 CN 2013084480 W CN2013084480 W CN 2013084480W WO 2014063556 A1 WO2014063556 A1 WO 2014063556A1
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WIPO (PCT)
Prior art keywords
frame
drill
pile driver
static pile
lead frame
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PCT/CN2013/084480
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English (en)
French (fr)
Inventor
朱建新
邓曦明
史超
陈小林
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山河智能装备股份有限公司
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Application filed by 山河智能装备股份有限公司 filed Critical 山河智能装备股份有限公司
Publication of WO2014063556A1 publication Critical patent/WO2014063556A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/22—Placing by screwing down

Definitions

  • the invention relates to a static pile driver, in particular to a pilot hole static pile driver.
  • the static pile driving method is a method of sinking piles into the soil by the pile-pushing mechanism of the static pile driver to provide the reaction force by the self-weight and the weight on the frame.
  • This construction method has the advantages of no noise, no vibration, no oil splash and pollution, high construction efficiency, etc. It has been widely used in China and is being promoted in many foreign countries.
  • static pressure piles are mainly used in the field of real estate construction. As the country has increased the construction of affordable housing and the climax of domestic high-speed rail construction, the demand for static pile drivers will further increase. However, the construction method of the static pile construction method is poor, and it is suitable for soft soil foundation.
  • the first type is the flushing auxiliary pile-pushing device.
  • the water pipe is placed in the cavity of the pipe pile through auxiliary equipment.
  • a water-gas gravel vortex is formed in the cavity of the limited pipe pile tip, and the high-pressure water gas flushes the sand layer at the end of the pile, which reduces the resistance of the pile end, so that the pile body can smoothly pass through the sand layer and enter the bearing layer.
  • the second type of drilling and boring device is pre-drilled by auger before the construction of the static pile, and the hole is drilled until the design requires the actual effective pile length, and then the pile construction is carried out.
  • the static pile driver is used to carry out the pile construction method of precast piles, which is mainly applied to the construction of cohesive soil or soft clay soil with light sandiness.
  • the first type of flushing and guiding method makes the friction of the piles less, and the bearing capacity of the piles does not meet the requirements. Due to the use of high-pressure water gas to assist the pile, it will cause serious water accumulation in the construction site, pollute the environment, and at the same time, the construction efficiency is low and the construction cost is high.
  • the second type of drilling and boring equipment, the first long auger drilling hole and then the pile driving method because the sand layer geology is prone to collapse during drilling, the precast pile and the hole position are not correct during the pile driving process, resulting in pile forming rate Lower, the water at the bottom of the hole softens the soil, making the bearing capacity less than required.
  • How to make the static pile driver through the hard layer such as sand layer and sand pebble layer is a technical problem facing China.
  • the technical problem to be solved by the present invention is to provide a pilot-type static pile driver machine which allows the pilot hole to be operated synchronously with the pile driving operation, and the prefabricated pile passes through the sand layer and enters a reliable holding layer.
  • the pilot hole static pile driver provided by the present invention is provided with a pilot hole device on the static pile driver, and the pilot hole device comprises a lead frame, a power head, a propulsion system, and a drill. And a drill pipe mounted on the lead frame, the power head is mounted on the drill frame, and the drill pipe is connected to the power head, and A horizontal displacement device is provided for positioning the drill frame, the power head, the propulsion system, and the drill pipe away from or against the position of the positive pressure pile.
  • the mounting structure of the horizontal displacement device is: the lead frame includes a lower lead frame and an upper lead frame, the drill stand is mounted on the upper lead frame, and the lower lead hole
  • the frame is mounted on the static pile driver, and the bottom of the upper guide frame is slidably mounted on the top of the lower guide frame, and between the upper guide frame and the lower guide frame A translation cylinder is installed.
  • the mounting structure of the horizontal displacement device is: the bottom of the lead frame is slidably mounted on the static pile driver, and the translation cylinder is installed between the lead frame and the static pile driver .
  • the mounting structure of the horizontal displacement device is: the lead frame includes a lower lead frame and an upper lead frame, the drill stand is mounted on the upper lead frame, and the lower lead hole The frame is mounted on the static pile driver, and the bottom of the upper header frame is mounted on the top of the lower header frame by a horizontal slewing support.
  • the mounting structure of the horizontal displacement device is such that the bottom of the lead frame is mounted on the static pile driver through a horizontal slewing support.
  • a stroke compensation mechanism is installed between the drill stand and the lead frame.
  • the stroke compensating mechanism is configured to slide the drill frame on the lead frame, and a stroke compensation cylinder is installed between the drill stand and the lead frame.
  • a stroke compensation mechanism is installed between the drill stand and the upper lead frame.
  • the stroke compensating mechanism is slidably mounted on the upper boring frame, and a stroke compensating cylinder is installed between the rig and the upper boring frame.
  • the propulsion system refers to: a sliding connection between the power head and the drill frame, the power head and the driving wheel are connected by a chain, and the driving wheel is fixed at the On the drill stand.
  • the pilot hole static pile driver adopting the above technical scheme is provided with a pilot hole device on the static pressure pile driver, and the hole guiding device comprises a drill frame, a drill pipe, a propulsion system and a power head, and the operation control system is ensured before the pilot hole operation
  • the drill pipe of the boring device is placed in the hollow through hole of the pressed precast pile and is concentric with the precast pile being pressed.
  • the propulsion system and the horizontal displacement device are operated by the manipulation control system, so that the drill pipe rises vertically and generates a horizontal displacement away from the position of the pile, thereby allowing the drill pipe to give way to the subsequent single precast pile that is hoisted.
  • the prefabricated pile is smoothly butt welded with the precast pile that has been pressed into the foundation, so as to carry out the next round of piloting and pile driving operations.
  • the stroke compensation mechanism on the pilot device can be operated by operating the control system to vertically move the drill frame downward to increase the downward movement of the drill pipe. , Thereby increasing the lead hole depth.
  • the invention has the following substantial features and obvious advantages: 1.
  • the invention adds a detachable boring device on the static pile driver to effectively combine with the static pile driver according to actual working conditions; 2.
  • the invention The upper and lower parts can be slid relatively horizontally, which overcomes the technical problem of the interference of the power head when lifting the PHC pipe pile; 3.
  • the invention introduces the hole in the pipe, and the drill bit looses the hard soil layer of the PHC pipe pile end face, and is not discharged to the ground. No pollution to the environment.
  • the present invention introduces a hole in the pipe, the diameter of the pilot hole is smaller than the diameter of the PHC pipe pile, and the friction resistance around the PHC pipe pile is not reduced, and the bearing capacity is not affected. 5.
  • the spiral drilling and the pile-pressing construction in the pipe are synchronously constructed, which improves the working efficiency. 6.
  • the present invention does not cause problems such as collapse of holes and misalignment of pile holes. 7.
  • the invention overcomes the technical problem that the PHC pipe pile penetrates the hard soil layer, has good construction quality, high construction efficiency and low construction cost.
  • the boring type static pile driver of the present invention integrates the function of the boring hole and the function of the pile, so that the boring operation and the pile operation can be carried out simultaneously, so that the prefabricated pile can pass through the sand layer and enter a reliable holding force. Layers, improve construction quality, shorten construction period and improve economic efficiency.
  • Figure 1 is a schematic view of the structure of the present invention.
  • FIG. 2 is a partial structural view of the boring device of the present invention.
  • Figure 3 is a schematic view showing the structure of a second embodiment of the boring device of the present invention.
  • FIG. 4 is a schematic view showing the structure of a third embodiment of the boring device of the present invention.
  • Figure 5 is a schematic view of an improved structure of the present invention.
  • Figure 6 is a schematic view of an improved structure of the present invention.
  • Figure 7 is a schematic view of an improved structure of the present invention.
  • pilot device 1 static pile driver 2, prefabricated pile 3, power head 4, stroke compensation mechanism 5, drill frame 6, drill pipe 7, upper guide frame 8, translation cylinder 9, lower guide frame 10.
  • Propulsion system 11 horizontal slewing support 12, drive wheel 13, sprocket assembly 14, hoisting 15.
  • a pilot hole device 1 is provided on the static pile driver 2, and the hole guiding device 1 includes a lead frame, a power head 4, a propulsion system 11, a drill frame 6, and a drill pipe 7, and the lead frame includes
  • the lower guide frame 10 and the upper guide frame 8 are mounted on the static pile driver 2, and the bottom of the upper guide frame 8 is slidably mounted on the top of the lower guide frame 10, and the upper guide frame 8 and the lower
  • a translating cylinder 9 is mounted between the boring frames 10, and the rig 6 is mounted on the upper boring frame 8.
  • the power head is mounted on the rig 6 by the propulsion system 11 to move downward and upward for drilling and deburring operations.
  • the drill pipe 7 is connected to the power head 4.
  • the propulsion system 11 means that a sliding connection is adopted between the power head (4) and the drill frame (6), and the power head (4) and the driving wheel (13) are connected by a chain.
  • the drive wheel (13) is fixed to the drill frame (6).
  • the propulsion system 11 means that a sliding connection is adopted between the power head (4) and the drill frame (6), and a winch (15) is fixedly mounted on the drill frame (6).
  • Power head (4) It is connected to the hoist (15) by a wire rope.
  • the drill frame 6 is slidably mounted on the upper guide frame 8, and a stroke compensation cylinder 5 is mounted between the drill frame 6 and the upper guide frame 8.
  • the pilot hole static pile driver of the present invention is composed of a pilot hole device 1 and a static pile driver 2, and when the static pile driver 2 performs a pile pressing operation on the precast pile 3, the pressing depth is as fast as sand.
  • the boring device 1 performs a drilling operation on the foundation soil layer through the middle through hole of the prefabricated pile 3, so that the precast pile is pressed into the bearing layer smoothly and quickly.
  • the boring device 1 is composed of a power head 4, a stroke compensation cylinder 5, a drill frame 6, a drill pipe 7, an upper boring frame 8, a translation cylinder 9, a lower spigot 10 and a propulsion system 11.
  • the drill pipe 7 is connected to the power head 4, the power head 4 is connected to the drill frame 6, and the drill frame 6 is connected thereto through a sliding slot on the upper lead frame 8, and can be passed on the upper lead frame 8 through the propulsion system 11.
  • the upper boring frame 8 is connected to the lower boring frame 10 through the translation cylinder 9, and the lower boring frame 10 is positioned on the static pile driver 2, wherein one end of the stroke compensation cylinder 5 is fixed on the upper boring frame 8, and One end is fixed to the drill frame 6, and the expansion and contraction of the stroke compensation cylinder 5 enables the drill frame 6 to vertically ascend along the upper header frame 8 together with the components connected thereto.
  • the drill pipe 7 of the boring device 1 is placed in the middle through hole of the pressed precast pile 3 by manipulating the steering system, and the center of the boring hole of the drill pipe 7 and the center of the prefabricated pile 3 are ensured.
  • the power head 4 and the propulsion system 11 are operated to operate the drill pipe 7 to perform the drilling operation.
  • the piloting operation is carried out synchronously with the pile driving operation until the pressing of the single precast pile 3 has been completed, it is necessary to continue to press the subsequent single precast pile 3, and by operating the control system, the translation cylinder 9 is operated, and the driving and translation cylinder 9 is driven.
  • the connected upper lead frame 8 and the power head 4 connected to the upper lead frame 8, the stroke compensation cylinder 5, the drill frame 6, the drill pipe 7 and the propulsion system 11 generate a horizontal displacement away from the position of the pile, thereby making the drill pipe 7
  • the prefabricated pile 3 is smoothly butt welded with the precast pile 3 which has been pressed into the foundation, and then the upper guide frame 8 and its connecting part are positioned to guide the hole position.
  • the next round of pilot holes and pile operations As the cumulative length of the plurality of butted precast piles 3 pressed into the foundation increases, the depth of the required pilot holes also increases, requiring a larger pilot hole stroke. At this time, the pilot hole can be manipulated by operating the steering system.
  • the stroke compensation cylinder 5 on the device 1 is contracted to vertically lower the drill frame 6 and the drill pipe 7 to increase the downward travel of the drill pipe 7, thereby increasing the depth of the pilot hole.
  • the lead frame is a whole, and the horizontal displacement device is installed between the bottom of the lead frame and the static pile driver 2.
  • the rig 6 is slidably mounted on the spigot frame, and a stroke compensating cylinder 5 is mounted between the rig 6 and the boring frame.
  • a pilot device 1 is provided on the static pile driver 2, and the hole guiding device 1 includes a lead frame, a power head 4, a propulsion system 11, a drill frame 6, and a drill pipe 7.
  • the lead frame includes a lower guide hole
  • the frame 10 and the upper boring frame 8 are mounted on the static pile driver 2, and the bottom of the upper boring frame 8 is mounted on the top of the lower spigot frame 10 by the horizontal slewing support 12, and the rig 6 is mounted thereon.
  • the power head is mounted on the rig 6 by the propulsion system 11 to move downward and upward to realize drilling and de-drilling operations, and the drill pipe 7 is connected to the power head 4.
  • Controlling the horizontal slewing ring 12 rotation causes the spigot frame and all components mounted on the spigot frame to be rotated away from the pile position.
  • the drill frame 6 is slidably mounted on the upper guide frame 8, and a stroke compensation cylinder 5 is mounted between the drill frame 6 and the upper guide frame 8.
  • a pilot device 1 is provided on the static pile driver 2, and the hole guiding device 1 includes a lead frame, a power head 4, a propulsion system 11, a drill frame 6, and a drill pipe 7.
  • the lead frame is a whole.
  • the bottom of the boring frame is mounted on the top of the lower boring frame 10 by a horizontal slewing support 12, and the rig 6 is mounted on the boring frame.
  • the power head is mounted on the rig 6 by the propulsion system 11 to move downward and upward to achieve drilling.
  • the drill pipe 7 is connected to the power head 4.
  • Controlling the horizontal slewing ring 12 rotation causes the spigot frame and all components mounted on the spigot frame to be rotated away from the pile position.
  • the drill frame 6 is slidably mounted on the lead frame, and a stroke compensation cylinder 5 is mounted between the drill frame 6 and the lead frame.
  • the sprocket of the sprocket device 14 is mounted on the top of the lower truss 10, and the chain of the sprocket device 14 is mounted on the bottom of the upper truss 8, and the upper truss 8 on which the chain is mounted is driven by the sprocket of the sprocket device 14.
  • the other components mounted thereon are displaced together.
  • the bottom of the boring frame is slidably mounted on the static pile driver (2), and a sprocket device is installed between the boring frame and the static pile driver (2).
  • the sprocket of the sprocket device 14 is mounted on the static pile driver, and the chain of the sprocket device 14 is mounted with a spigot frame, and the spigot mounted on the chain is mounted on the sprocket of the sprocket device 14 and mounted thereon.
  • the other components together produce a shift.

Abstract

一种引孔式静压桩机，包括静压桩机（2），在所述的静压桩机（2）上设有引孔装置（1），所述的引孔装置（1）包括引孔架、动力头（4）、推进系统（11）、钻架（6）和钻杆（7），所述的钻架（6）安装在所述的引孔架上，所述的动力头（4）安装在所述的钻架（6）上，所述的钻杆（7）与所述的动力头（4）相连接，还设有一个使所述的钻架（6）、所述的动力头（4）、所述的推进系统（11）及所述的钻杆（7）远离压桩位置的水平位移装置。该引孔式静压桩机将引孔功能与压桩功能集为一体，让引孔作业与压桩作业同步进行，可使预制桩穿过砂层进入可靠的持力层，提高施工质量，缩短施工工期，提升经济效益。

Description

引孔式静压桩机 技术领域
本发明涉及一种静压桩机，特别是一种引孔式静压桩机。
背景技术
静力压桩施工方法是通过静力压桩机的压桩机构以自重和机架上的配重提供反力而将桩压入土中的沉桩方法。这种施工方法具有无噪音、无振动、无油污飞溅污染环境、施工效率高等优点，已在我国得到广泛的使用，国外很多地区也正在推广。目前静力压桩主要应用于房地产建设领域，随着国家加大了保障房开工建设的力度和国内高铁建设高潮的来临，市场对静力压桩机的需求将进一步加大。但是静力压桩施工方法桩的穿透力较差，适用于软土地基，难以穿透沙层、沙卵石层等硬层，无法达到深度要求，这将制约静力压桩机的发展。如何改进静力压桩机设备，提高桩的贯入能力，使其到达桩的施工要求的持力层，又不影响施工效率是目前面临的技术难题。
目前国内提高静力压桩桩的贯入能力的装置主要有二大类：第一类是冲水辅助压桩装置,在压桩过程中，通过辅助设备在管桩空腔内放置水管气管，在有限的管桩桩尖空腔内形成水气沙砾漩涡，同时高压水气冲刷桩端部分沙层，减小了桩端阻力，使桩身能顺利穿过沙层进入持力层。第二类钻进引孔装置，在静力压桩施工之前，采用螺旋钻机预先钻孔，引孔至设计要求实际有效桩长处以下，再进行压桩施工。目前，采用静压桩机进行预制桩的压桩施工方法，主要应用于粘性土或沙性较轻的软粘性土层施工，当需要贯穿沙层地质夹层时，容易导致滞桩、偏桩或断桩，达不到施工质量的要求；第一类冲水引孔法易使得桩周摩擦力减少，桩的承载力达不到要求。由于使用高压水气辅助压桩，会造成施工场地积水严重，污染环境，同时施工效率低，工程造价高。第二类钻进引孔设备，先长螺旋钻机引孔然后压桩工法，由于沙层地质在钻孔时容易出现塌孔，压桩过程预制桩与孔位对不正，导致压桩成桩率较低，孔底积水使土体软化，使承载力达不到要求。如何使静力压桩机引孔穿过沙层、沙卵石层等硬层是目前国内面临的一个技术难题。
 技术问题
本发明所要解决的技术问题是提供一种让引孔作业与压桩作业同步进行，使预制桩穿过砂层进入可靠的持力层的引孔式静压桩机。
技术解决方案
为了解决上述技术问题，本发明提供的引孔式静压桩机，在所述的静压桩机上设有引孔装置，所述的引孔装置包括引孔架、动力头、推进系统、钻架和钻杆，所述的钻架上安装在所述的引孔架上，所述的动力头安装在所述的钻架上，所述的钻杆与所述的动力头相连接，还设有一个使所述的钻架、所述的动力头、所述的推进系统及所述的钻杆远离或对正压桩位置的水平位移装置。
所述的水平位移装置的安装结构为：所述的引孔架包括下引孔架和上引孔架，所述的钻架安装在所述的上引孔架上，所述的下引孔架安装在所述的静压桩机上，所述的上引孔架的底部滑动安装在所述的下引孔架的顶部，所述的上引孔架与所述的下引孔架之间安装有平移油缸。
所述的水平位移装置的安装结构为：所述的引孔架的底部滑动安装在所述的静压桩机，所述的引孔架与所述的静压桩机之间安装有平移油缸。
所述的水平位移装置的安装结构为：所述的引孔架包括下引孔架和上引孔架，所述的钻架安装在所述的上引孔架上，所述的下引孔架安装在所述的静压桩机上，所述的上引孔架的底部通过水平回转支撑安装在所述的下引孔架的顶部。
所述的水平位移装置的安装结构为：所述的引孔架的底部通过水平回转支撑安装在所述的静压桩机上。
所述的钻架与所述的引孔架之间安装有行程补偿机构。
所述的行程补偿机构为所述的钻架滑动安装在所述的引孔架上，在所述的钻架与所述的引孔架之间安装有行程补偿油缸。
所述的钻架与所述的上引孔架之间安装有行程补偿机构。
所述的行程补偿机构为所述的钻架滑动安装在所述的上引孔架上，在所述的钻架与所述的上引孔架之间安装有行程补偿油缸。
所述的推进系统是指：所述的动力头和所述的钻架之间采用滑动连接，所述的动力头和所述的主动轮通过链条连接，所述的主动轮固定在所述的钻架上。
采用上述技术方案的引孔式静压桩机，在静压桩机上配置引孔装置，引孔装置包括钻架、钻杆、推进系统和动力头，引孔作业之前，通过操纵操控系统，保证引孔装置钻杆置于被压预制桩的中空通孔内，并与被压预制桩同心，当引孔作业与压桩作业同步进行到已经完成单根预制桩的压入，需要继续压入后续单根预制桩时，通过操纵操控系统操作推进系统和水平位移装置，使钻杆垂直上升并产生远离压桩位置的水平位移，从而使钻杆为吊入的后续单根预制桩让位，让该预制桩顺利与已经压入地基的预制桩对接施焊，从而进行下一轮引孔与压桩作业，随着被压的预制桩压入地基的长度增加，所需引孔的深度也随之增加，则需要更大的引孔行程，此时，可通过操纵操控系统，使引孔装置上的行程补偿机构运行，使钻架垂直下移，以增加钻杆的下移钻孔行程，从而增加引孔深度。
 有益效果
本发明具有以下实质性特征和明显的优点：1、本发明在静力压桩机上增设可拆卸的引孔装置，使其与静力压桩机根据实际工况有效结合使用；2、本发明分上下两部分，可以相对水平滑动，克服了起吊安装PHC管桩时动力头干涉的技术难题；3、本发明在管内引孔，钻头钻松PHC管桩端面硬土层，不排出到地面，对环境不产生污染。4、本发明在管内引孔，引孔直径小于PHC管桩直径，PHC管桩周围摩擦阻力不会减少，不会影响承载力。5、在遇到硬土层时，管内螺旋钻孔和压桩同步施工，提高了工作效率。6、本发明与其他引孔装置相比，不会出现塌孔、桩孔对不正等问题。7、本发明克服了PHC管桩穿透硬土层的技术难题，施工质量好，施工效率高，施工造价低。
综上所述，本发明引孔式静压桩机将引孔功能与压桩功能集为一体，让引孔作业与压桩作业同步进行，可使预制桩穿过砂层进入可靠的持力层，提高施工质量，缩短施工工期，提升经济效益。
 附图说明
附图1为本发明的结构示意图。
附图2为本发明的引孔装置部分结构示意图。
附图3为本发明的引孔装置部分第二方案结构示意图。
附图4为本发明的引孔装置部分第三方案结构示意图。
附图5为本发明的一种改进结构示意图。
附图6为本发明的一种改进结构示意图。
附图7为本发明的一种改进结构示意图。
附图中：引孔装置1，静压桩机2，预制桩3，动力头4，行程补偿机构5，钻架6，钻杆7，上引孔架8，平移油缸9，下引孔架10，推进系统11，水平回转支撑12，主动轮13，链轮装置14，卷扬15。
 本发明的实施方式
下面结合附图和具体实施方式对本发明作进一步详细的说明。
参见图1和图2，在静压桩机2上设有引孔装置1，引孔装置1包括引孔架、动力头4、推进系统11、钻架6和钻杆7，引孔架包括下引孔架10和上引孔架8，下引孔架10安装在静压桩机2上，上引孔架8的底部滑动安装在下引孔架10的顶部，上引孔架8与下引孔架10之间安装有平移油缸9，钻架6安装在上引孔架8上，动力头通过推进系统11安装在钻架6上实现向下和向上移动以实现钻孔和退钻操作，钻杆7与动力头4相连接。
推进系统11是指：所述的动力头(4)和所述的钻架(6)之间采用滑动连接，所述的动力头(4)和所述的主动轮(13)通过链条连接，所述的主动轮(13)固定在所述的钻架(6)上。
推进系统11是指：所述的动力头(4)和所述的钻架(6)之间采用滑动连接，在所述的钻架(6)上固定安装有卷扬(15)，所述的动力头(4) 通过钢丝绳与所述的卷扬(15)连接。
参见图1和图2，作为本发明的一种改进，钻架6滑动安装在上引孔架8上，在钻架6与上引孔架8之间安装有行程补偿油缸5。
如图1所示，本发明的引孔式静压桩机由引孔装置1和静压桩机2组成，当静压桩机2对预制桩3进行压桩作业的压入深度快到沙土层时，引孔装置1通过预制桩3的中通孔对地基土层进行钻孔作业，以便预制桩顺利快速地被压入持力层。
参见图1和图2，引孔装置1由动力头4、行程补偿油缸5、钻架6，钻杆7，上引孔架8，平移油缸9，下引孔架10和推进系统11组成，其中钻杆7与动力头4相连接，动力头4与钻架6连接，钻架6通过上引孔架8上的滑槽与之连接，并能通过推进系统11在上引孔架8上垂直升降，上引孔架8通过平移油缸9与下引孔架10连接，下引孔架10定位在静压桩机2上，其中行程补偿油缸5一端固定在上引孔架8上，另一端固定在钻架6上，行程补偿油缸5的伸缩能使钻架6连同其上连接的部件一起沿上引孔架8垂直升降。当需要引孔装置1作业时，通过操纵操控系统，使引孔装置1的钻杆7置于被压预制桩3的中通孔内，在保证钻杆7的引孔中心与预制桩3中心的同心度的同时，运转动力头4与推进系统11，从而运转钻杆7实施钻孔作业。当引孔作业与压桩作业同步进行到已经完成单根预制桩3的压入，需要继续压入后续单根预制桩3时，通过操纵操控系统，使平移油缸9运作，带动与平移油缸9连接的上引孔架8以及与上引孔架8连接的动力头4、行程补偿油缸5、钻架6、钻杆7与推进系统11产生远离压桩位置的水平位移，从而使钻杆7为吊入的后续单根预制桩3让位，让该预制桩3顺利与已经压入地基的预制桩3对接施焊，再操控上引孔架8及其连接部件归引孔位置，从而进行下一轮引孔与压桩作业。随着多根对接的预制桩3被压入地基的累加长度增加，所需引孔的深度也随之增加，则需要更大的引孔行程，此时，可通过操纵操控系统，使引孔装置1上的行程补偿油缸5运行收缩，使钻架6及钻杆7垂直下降，以增加钻杆7的下移行程，从而增加引孔深度。
参见图3，作为本发明的另一种实现形式，引孔架为一整体，水平位移装置安装在引孔架的底部与静压桩机2之间。
参见图3，作为本发明的另一种实现形式的改进，钻架6滑动安装在引孔架上，在钻架6与引孔架之间安装有行程补偿油缸5。
参见图4，在静压桩机2上设有引孔装置1，引孔装置1包括引孔架、动力头4、推进系统11、钻架6和钻杆7，引孔架包括下引孔架10和上引孔架8，下引孔架10安装在静压桩机2上，上引孔架8的底部通过水平回转支撑12安装在下引孔架10的顶部，钻架6安装在上引孔架8上，动力头通过推进系统11安装在钻架6上实现向下和向上移动以实现钻孔和退钻操作，钻杆7与动力头4相连接。
控制水平回转支撑12回转使引孔架及所有装配在引孔架上的部件回转远离压桩位置。
参见图4，作为本发明的一种改进，钻架6滑动安装在上引孔架8上，在钻架6与上引孔架8之间安装有行程补偿油缸5。
参见图5，在静压桩机2上设有引孔装置1，引孔装置1包括引孔架、动力头4、推进系统11、钻架6和钻杆7，引孔架为一整体，引孔架的底部通过水平回转支撑12安装在下引孔架10的顶部，钻架6安装在引孔架上，动力头通过推进系统11安装在钻架6上实现向下和向上移动以实现钻孔和退钻操作，钻杆7与动力头4相连接。
控制水平回转支撑12回转使引孔架及所有装配在引孔架上的部件回转远离压桩位置。
参见图5，作为本发明的一种改进，钻架6滑动安装在引孔架上，在钻架6与引孔架之间安装有行程补偿油缸5。
参见图6，链轮装置14的链轮安装在下桁架10的顶部，链轮装置14的链条安装在上桁架8的底部，通过运转链轮装置14的链轮使安装有链条的上桁架8及其上安装的其它部件一起产生移位。
参见图7，引孔架的底部滑动安装在所述的静压桩机(2)上，所述的引孔架与所述的静压桩机(2)之间安装有链轮装置(14)，链轮装置14的链轮安装在静压桩机上，链轮装置14的链条安装有引孔架，通过运转链轮装置14的链轮使安装在链条上的引孔架及其上安装的其它部件一起产生移位。

Claims (13)

  1. 一种引孔式静压桩机，包括静压桩机(2)，其特征是：在所述的静压桩机(2)上设有引孔装置(1)，所述的引孔装置(1)包括引孔架、动力头(4)、推进系统（11）、钻架(6)和钻杆(7)，所述的钻架(6)安装在所述的引孔架上，所述的动力头(4)安装在所述的钻架(6)上，所述的钻杆(7)与所述的动力头(4)相连接，还设有一个使所述的钻架(6)、所述的动力头(4)、所述的推进系统（11）及所述的钻杆(7)远离或对正压桩位置的水平位移装置。
  2. 根据权利要求1所述的引孔式静压桩机，其特征是：所述的水平位移装置的安装结构为：所述的引孔架包括下引孔架(10)和上引孔架(8)，所述的钻架(6)安装在所述的上引孔架(8)上，所述的下引孔架(10)安装在所述的静压桩机(2)上，所述的上引孔架(8)的底部滑动安装在所述的下引孔架(10)的顶部，所述的上引孔架(8)与所述的下引孔架(10)之间安装有平移油缸(9)。
  3. 根据权利要求1所述的引孔式静压桩机，其特征是：所述的水平位移装置的安装结构为：所述的引孔架包括下引孔架(10)和上引孔架(8)，所述的钻架(6)安装在所述的上引孔架(8)上，所述的下引孔架(10)安装在所述的静压桩机(2)上，所述的上引孔架(8)的底部滑动安装在所述的下引孔架(10)的顶部，所述的上引孔架(8)与所述的下引孔架(10)之间安装有链轮装置(14)。
  4. 根据权利要求1所述的引孔式静压桩机，其特征是：所述的水平位移装置的安装结构为：所述的引孔架的底部滑动安装在所述的静压桩机(2)上，所述的引孔架与所述的静压桩机(2)之间安装有平移油缸(9)。
  5. 根据权利要求1所述的引孔式静压桩机，其特征是：所述的水平移位装置的安装结构为：所述的引孔架的底部滑动安装在所述的静压桩机(2)上，所述的引孔架与所述的静压桩机(2)之间安装有链轮装置(14)。
  6. 根据权利要求1所述的引孔式静压桩机，其特征是：所述的水平位移装置的安装结构为：所述的引孔架包括下引孔架(10)和上引孔架(8)，所述的钻架(6)安装在所述的上引孔架(8)上，所述的下引孔架(10)安装在所述的静压桩机(2)上，所述的上引孔架(8)的底部通过水平回转支撑(12)安装在所述的下引孔架(10)的顶部。
  7. 根据权利要求1所述的引孔式静压桩机，其特征是：所述的水平位移装置的安装结构为：所述的引孔架的底部通过水平回转支撑(12)安装在所述的静压桩机(2)上。
  8. 根据权利要求1、4、5或7所述的引孔式静压桩机，其特征是：所述的钻架(6)与所述的引孔架之间安装有行程补偿机构。
  9. 根据权利要求8所述的引孔式静压桩机，其特征是：所述的行程补偿机构为所述的钻架(6)滑动安装在所述的引孔架上，在所述的钻架(6)与所述的引孔架之间安装有行程补偿油缸(5)。
  10. 根据权利要求2或4所述的引孔式静压桩机，其特征是：所述的钻架(6)与所述的上引孔架(8)之间安装有行程补偿机构。
  11. 根据权利要求9所述的引孔式静压桩机，其特征是：所述的行程补偿机构为所述的钻架(6)滑动安装在所述的上引孔架(8)上，在所述的钻架(6)与所述的上引孔架(8)之间安装有行程补偿油缸(5)。
  12. 根据权利要求1所述的引孔式静压桩机，其特征是：所述的推进系统（11）是指：所述的动力头(4)和所述的钻架(6)之间采用滑动连接，所述的动力头(4)和所述的主动轮(13)通过链条连接，所述的主动轮(13)固定在所述的钻架(6)上。
  13. 根据权利要求1所述的引孔式静压桩机，其特征是：所述的推进系统（11）是指：所述的动力头(4)和所述的钻架(6)之间采用滑动连接，在所述的钻架(6)上固定安装有卷扬(15)，所述的动力头(4) 通过钢丝绳与所述的卷扬(15)连接。
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