WO2020056794A1 - 一种盾构机空推步进装置 - Google Patents

一种盾构机空推步进装置 Download PDF

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Publication number
WO2020056794A1
WO2020056794A1 PCT/CN2018/108910 CN2018108910W WO2020056794A1 WO 2020056794 A1 WO2020056794 A1 WO 2020056794A1 CN 2018108910 W CN2018108910 W CN 2018108910W WO 2020056794 A1 WO2020056794 A1 WO 2020056794A1
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Prior art keywords
reaction force
shield machine
positioning
force
holes
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Ceased
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PCT/CN2018/108910
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English (en)
French (fr)
Inventor
檀俊坤
乔世范
刘日彤
张细宝
叶明勇
徐平
胡如成
蔡子勇
向南
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Electricity Engineering Co Ltd Under Crec No5 Group
Central South University
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Electricity Engineering Co Ltd Under Crec No5 Group
Central South University
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Application filed by Electricity Engineering Co Ltd Under Crec No5 Group, Central South University filed Critical Electricity Engineering Co Ltd Under Crec No5 Group
Publication of WO2020056794A1 publication Critical patent/WO2020056794A1/zh
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Ceased legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E21D9/0621—Shield advancing devices

Definitions

  • the invention relates to the technical field of tunnel engineering, and in particular, to an air-propelled stepping device for a shield machine.
  • the shield tunnel method is usually used to construct the subway tunnel.
  • other construction methods need to be used to construct the tunnel.
  • the shield tunneling machine needs to be air-pushed through the excavated tunnel section.
  • Cissar patent CN106150511B discloses a construction method of a shield tunneling type air pushing through a ground fissure concealed tunnel, which includes the following steps: 1. Construction of a concrete guide platform in a ground fissure concealed tunnel; 2. Construction of guide rails and reaction frames; 3. Shield The machine is pushed forward as a whole: move the shield machine forward and support the shield host on two guide rails, and then push the shield cylinder and the reaction force frame together to push it forward until it is pushed in place; During the pushing process, the shield segment assembly machine using the shield machine is used to install multiple shield segments on the concrete guide from the back to the front. The shield segments are the bottom segments and are located on the rear side of the propelling cylinder.
  • the oil cylinder is supported on the reaction force frame through the bottom tube segment.
  • a plurality of bottom tube segments form a panning channel for the rear supporting trolley of the shield machine to move forward.
  • the method uses the back arch structure in the tunnel to complete the shield emptying. Pushing through the ground fissure tunnel construction process.
  • the guide platform of shield machine is usually made of reinforced concrete. The thickness of the guide platform and the amount of reinforcement in the steel bar are determined by the height of the shield machine and the reaction force required for the shield machine.
  • the thickness of the concrete guide platform When the thickness of the concrete guide platform must be reduced in the design, it is easy to cause the thickness of the guide platform to be small, the depth of the reaction force hole provided on the guide platform is shallow, the contact area between the reaction force hole and the reaction force frame is small, and the stress concentration is large, which is easy to the periphery of the hole.
  • the concrete of the guide platform causes damage, and the insufficient reaction force makes it difficult to propel the shield machine forward.
  • the shield machine space is sufficient in the air-propelled step, the concrete guide platform is made thick to ensure that the shield machine is given sufficient reaction force and to avoid or reduce it.
  • the concrete guide platform is damaged, however, this will inevitably greatly increase the amount of concrete and steel bars, and the economic cost will increase.
  • the purpose of the present invention is to provide an air-stepping device for a shield machine to solve the problems raised in the background art. Construction method with low construction cost and high-speed shield tunneling by air tunneling through a tunnel.
  • the present invention provides an air-gating stepping device for a shield machine, which includes a shield machine guide, a reaction force component, and a force transmission piece.
  • the shield machine guide is provided with a shield machine direction.
  • the two forward guide rails are provided with multiple sets of reaction force holes spaced apart along the length direction between the two guide rails;
  • the reaction force component includes at least one reaction force piece, and the reaction force piece includes a positioning bottom plate, a positioning top plate, and at least one leg, and the positioning bottom plate is disposed on the shield machine guide platform, and the positioning top plate It is located above the positioning floor, the legs are inserted vertically in the reaction force hole, and the leg closest to the shield machine is connected to both the positioning floor and the positioning roof.
  • the hydraulic chamber is provided with hydraulic oil for transmitting pressure.
  • the bottom of the leg is provided with a mounting groove on the side far from the shield machine. One end of the mounting groove is connected with the mounting groove.
  • the power transmission plate is fixed between the positioning bottom plate and the positioning top plate by a plurality of fixing members, and a lower surface of the power transmission plate is in contact with the two guide rails.
  • the thrust device at the tail of the shield machine is connected.
  • reaction force component includes two reaction force single pieces arranged side by side, and each of the reaction force single pieces includes a leg, and the leg penetrates the positioning bottom plate and the positioning top plate up and down.
  • the number of the reaction force holes in each set of reaction force holes is two, and the distance between the two reaction force holes is adapted to the distance between the two reaction force pieces.
  • the reaction force component includes two reaction force single pieces arranged side by side, each of the reaction force single pieces includes two legs, and the two legs are vertically spaced along the advancement direction of the shield machine, The legs close to the shield machine pass through the positioning bottom plate and the positioning top plate up and down, and the hydraulic chambers of the two legs are connected by hydraulic pipes;
  • the reaction force single piece further includes two telescopic members, two The connecting piece is used to connect the two legs and is connected to the positioning bottom plate and the positioning top plate, respectively.
  • the telescopic member includes a member body and an inner sleeve rod.
  • One end of the member body for connecting with the positioning bottom plate or the positioning top plate is a U-shaped connection portion, and the other end of the component body is hollow.
  • a plurality of first through holes are provided on the outer sleeve and spaced apart along its length direction, and a plurality of second through holes adapted to the first through holes are provided on the inner sleeve;
  • An inner sleeve rod is inserted in the outer sleeve rod, and the inner rod and the outer sleeve rod are fixed by a plug.
  • the connecting portion, the positioning top plate, and the positioning bottom plate are all provided with insertion holes through which the legs penetrate up and down, and the legs are in interference fit with the insertion holes.
  • the number of the reaction force holes in each group of reaction force holes is four, and the distance between the four reaction force holes and the distance between the four legs of the reaction force assembly is four. Match.
  • a mounting ear is provided on the force transmission sheet and on a side connected to the thrust device, a mounting ear is provided on the mounting ear, and an end of the thrust device is provided to fit the mounting ear.
  • the force transmission sheet is a tunnel assembled segment
  • the thickness of the tunnel assembled segment is 40-50 cm
  • the shield tunnel segment is made of C50 concrete.
  • reaction force assembly further includes a hydraulic pressure device for adjusting the oil pressure in the hydraulic chamber.
  • the present invention has the following beneficial effects:
  • An air-stepping device for a shield machine includes a shield machine guide, a reaction force component, and a force transmission piece.
  • the shield machine guide is provided with two guide rails, and a space between the two guide rails is provided.
  • a hydraulic chamber in the leg There is a hydraulic chamber in the leg, a power transmission rod connected to the hydraulic chamber is provided at the bottom of the leg, and a pressure-bearing plate is connected to the other end of the power transmission rod;
  • the force on the outriggers is evenly distributed to the outriggers of the facet to avoid excessive stress on the single reaction force hole; the outriggers and the reaction force holes that are detachably inserted in the reaction force holes cannot be formed vertically.
  • the lever can effectively avoid the concentration of stress on the upper and lower parts of the guide table and be broken.
  • the reaction force component of the present invention includes two reaction force pieces arranged side by side, each reaction force piece includes two legs, and the two legs are vertically spaced along the advancement direction of the shield machine, close to the shield
  • the legs of the construction machine penetrate the positioning floor and the positioning top plate up and down, and the hydraulic chambers of the two legs are connected by hydraulic pipes;
  • the reaction force single piece also includes two telescopic members that are respectively connected to the positioning bottom plate and the positioning top plate. Two telescopic members are used to connect two legs; the structure is provided with multiple legs, and the legs are provided with hydraulic penetrations, so that each leg is evenly stressed, the utilization of the legs is increased, and the counterforce is reduced against the shield Destruction of machine concrete guide.
  • the reaction force device is fixedly connected with the assembled pipe segment of the tunnel, and the line contact between the conventional concrete guide and the leg is adjusted to surface contact, so as to increase the force receiving area of the concrete and enhance the horizontal reaction force provided by the concrete ;
  • the bottom of the leg is provided with a power transmission rod connected to the hydraulic chamber at one end, and a pressure bearing plate is connected to the other end of the power transmission rod, and the power transmission rod and the pressure bearing plate are located in the reaction force hole.
  • the size of the force hole does not need to be strictly matched with the outriggers, which reduces the work accuracy and facilitates construction.
  • a rubber gasket is provided on the outer side of the pressure bearing plate.
  • the rubber gasket can fill uneven parts of the reaction force hole, increase the contact area, and reduce concentrated stress.
  • the telescopic component in the present invention includes a component body and an inner sleeve rod, and one end of the component body for connecting with the positioning bottom plate or the positioning top plate is a U-shaped connecting portion. The other end is a hollow outer sleeve. A plurality of first through holes are provided on the outer sleeve and spaced along its length. The inner sleeve is provided with a plurality of second through holes adapted to the first through holes.
  • the air-driven stepping device of the shield machine of the present invention has a simple operation method, which can greatly reduce the thickness of the guide table, reduce the amount of concrete and reinforcement used, reduce the amount of labor, and reduce the economic cost compared with the existing devices. Conducive to speeding up construction.
  • FIG. 1 is a schematic diagram of a three-dimensional structure of an air push stepping device for a shield machine of the present invention
  • FIG. 2 is a partially enlarged structure diagram of the air-driven stepping device of the shield machine in FIG. 1;
  • FIG. 3 is a schematic structural view of a right-side view of an air-stepping device of a shield machine in FIG. 1;
  • FIG. 4 is a schematic diagram of a mounting structure of the reaction force component in FIG. 1;
  • FIG. 5 is an enlarged structural schematic view of A of the reaction force component in FIG. 1; FIG.
  • FIG. 6 is a schematic structural diagram of a reaction force component in FIG. 1;
  • FIG. 7 is a schematic cross-sectional structure diagram of the reaction force component in FIG. 1;
  • FIG. 8 is a schematic perspective structural view of another air-stepping device for a shield machine of the present invention.
  • Shield machine guide 1.1, guide rail, 1.2, reaction force hole, 2, reaction force component, 2a, reaction force single piece, 2.1, positioning bottom plate, 2.2, positioning top plate, 2.3, outrigger, 2.3a Hydraulic room, 2.4, Power transmission rod, 2.5, Pressure plate, 2.6, Gasket, 2.7, Fixture, 2.8, Hydraulic tube, 2.9, Telescopic component, 2.9a, Component body, 2.9b, Inner sleeve rod, 2.10 , Pressurization device, 3, force transmission piece, 3.1, mounting ears, 4, shield machine, 4.1, thrust device.
  • an air-propelled stepping device of a shield machine includes a reaction force component 2 and a force transmission plate 3 provided on a shield machine guide table 1.
  • the two guide rails 1.1 that the shield machine 4 advances forward are provided with a plurality of sets of reaction force holes 1.2 spaced apart along the length direction between the two guide rails.
  • the reaction force component includes two reaction force pieces 2a arranged side by side.
  • the reaction force piece includes two legs 2.3 and a hydraulic pipe 2.8.
  • the two legs are vertically spaced in the reaction force hole along the advance direction of the shield machine. Inside, the legs close to the shield machine penetrate the positioning floor and the positioning top plate up and down, and the hydraulic chambers of the two legs are connected by a hydraulic pipe 2.8; the reaction force single piece also includes a telescopic member 2.9 for connecting the two legs ,
  • the number of telescopic members is two, which are respectively connected to the positioning bottom plate and the positioning top plate.
  • the telescopic component includes a component body 2.9a and an inner sleeve rod 2.9b.
  • One end of the component body for connecting with the positioning bottom plate or the positioning top plate is a U-shaped connection portion, and the legs close to the shield machine also pass through the connection portion up and down;
  • the other end of the component body is a hollow outer sleeve.
  • a plurality of first through holes are provided on the outer sleeve and spaced along its length.
  • the inner sleeve is provided with a plurality of second through holes adapted to the first through holes.
  • the sleeve rod is inserted into the outer sleeve rod, and the inner rod and the outer sleeve rod are fixed by a connector.
  • the structure is provided with multiple legs, and the hydraulic chambers in the two legs of the same reaction force single piece communicate with each other.
  • the force transmission plate passes the thrust force exerted by the thrust device on it.
  • the connecting part is transmitted to each leg, and the hydraulic oil in the leg spreads the pressure on the pressure bearing plate at the bottom of the leg at the same time, so that each leg is uniformly stressed, and the reaction force hole that cooperates with the leg is subject to The force is evenly divided to reduce the damage of the counterforce to the concrete guide platform of the shield machine and reduce the propulsion cost.
  • the connecting portion, the positioning top plate, and the positioning bottom plate are provided with insertion holes through which the legs pass up and down; the number of reaction force holes in each group of reaction force holes is four, and between the four reaction force holes The distance is adapted to the distance between the four legs in the reaction force assembly.
  • the power transmission plate is fixed between the positioning bottom plate and the positioning top plate by a plurality of fixing members 2.7, and the lower surface of the power transmission plate is in contact with two guide rails.
  • the thrust device 4.1 is connected.
  • Mounting ears 3.1 are provided on the force transmission plate and on the side connected to the thrust device.
  • the mounting ears are provided with a guide chute 3.1a.
  • the end of the thrust device is set in the guide chute. The thrust device of the shield machine is pushed out for a distance.
  • an arc-shaped groove adapted to the shield body of the shield machine is provided on the guide platform of the shield machine, and two guide rails are symmetrically arranged on both sides of the arc-shaped groove;
  • the thickness of the assembled tunnel segment is 40-50cm, and the shield tunnel segment is made of C50 concrete with compressive strength.
  • the distance between the two adjacent sets of reaction force holes is adapted to the forward advancement distance of each step of the shield machine; the upper surface of the positioning bottom plate and the lower surface of the positioning top plate are both in accordance with the shape of the force transmission plate Match.
  • the reaction force assembly further includes a pressure device 2.10 connected to the hydraulic chamber, and the pressure device is disposed on the leg; by setting the device, the position of the support plate in the horizontal direction can be appropriately adjusted to further reduce the reaction force. Damage to concrete guide platform of shield machine.
  • another shield pushing machine stepping device of the present invention includes a reaction force component 2 and a force transmission plate 3 provided on a shield machine guide 1.
  • the shield machine guide is provided with a shield for the shield.
  • the two guide rails 1.1 that the machine 4 advances forward are provided with multiple sets of reaction force holes 1.2 spaced apart along the length direction of the two guide rails.
  • the number of reaction force holes in each group of reaction force holes is two, and two reaction forces are provided. The distance between the force holes matches the distance between the two reaction force pieces.
  • the reaction force assembly includes two reaction force pieces 2a, the reaction force single piece includes a positioning bottom plate 2.1, a positioning top plate 2.2, and two legs 2.3, and the positioning bottom plate is provided on the shield machine guide platform for positioning
  • the top plate is located above the positioning top plate, and the legs are vertically inserted in the reaction force holes, and the leg closest to the shield machine is connected to the positioning bottom plate and the positioning top plate. Specifically, the legs penetrate the positioning bottom plate and the positioning top plate up and down.
  • the hydraulic chamber is equipped with hydraulic oil for transmitting pressure.
  • the bottom of the outriggers is provided with a mounting groove on the side far from the shield machine. One end of the mounting groove is connected to the hydraulic chamber.
  • Power transmission rod 2.4 the other end of the power transmission rod is connected with a pressure bearing plate 2.5, the outer surface of the pressure transmission plate is covered with a gasket 2.6, the power transmission rod and the pressure bearing plate are located in the reaction force hole;
  • the legs are inserted vertically in the reaction force hole, which effectively prevents the legs and levers from forming when the air-actuated stepping device acts as a reaction force, and prevents the concentration of the upper and lower parts of the guide platform from being broken.
  • the force on one leg is evenly distributed to the legs of the facet to avoid excessive stress on a single reaction force hole;
  • the gasket 2.6 is a rubber gasket, which can fill the reaction force hole unevenly and increase the contact area. Reduce concentrated stress.
  • the power transmission plate is fixed between the positioning bottom plate and the positioning top plate by a plurality of fixing members 2.7, and the lower surface of the power transmission plate is in contact with two guide rails.
  • the thrust device 4.1 is connected. Mounting ears 3.1 are provided on the force transmission plate and on the side connected to the thrust device, and the end of the thrust device is provided with a hook adapted to the mounting ears; during the work, after the thrust device of the shield machine is pushed out for a distance, pull out When the outriggers are out, the thrust device shrinks and drives the reaction force component and the power transmission piece forward, and then insert the outriggers into the reaction hole of the next group, and continue the above process.
  • the force-transmitting sheet is a tunnel assembled segment, the thickness of the tunnel assembled segment is 40-50 cm, and the shield tunnel segment is made of C50 concrete; the structure is easy to obtain and the structural strength is high.
  • the air-driven stepping device of the shield machine of the invention has simple operation method. Compared with the existing device, it can greatly reduce the thickness of the guide table, reduce the amount of concrete and reinforcement, reduce labor, reduce the economic cost, and help speed up the construction. .

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

一种盾构机空推步进装置，包括设置在盾构机导台（1）上的反力组件（2）和传力片（3），盾构机导台（1）上设有两条导轨（1.1），两导轨（1.1）之间设有多组反力孔（1.2）；反力组件（2）包括至少一个反力单件（2a），反力单件（2a）包括定位底板（2.1）、定位顶板（2.2）和至少一个支腿（2.3），支腿（2.3）竖向插设在反力孔（1.2）内，支腿（2.3）内设有液压室（2.3a），支腿（2.3）的底部设有一端与液压室（2.3a）相连的传力杆（2.4），传力杆（2.4）的另一端连接有一块承压板（2.5）；传力片（3）安装在定位底板（2.1）和定位顶板（2.2）之间，传力片（3）远离支腿（2.3）的一侧与推力装置（4.1）连接；该装置中传力片（3）对推力装置（4.1）产生的反力施加在支腿（2.3）上时，反力通过液压油和传力杆（2.4）传递到承压板（2.5）上以施加在反力孔（1.2）内。

Description

一种盾构机空推步进装置 技术领域
本发明涉及隧道工程技术领域，特别地，涉及一种用于盾构机空推步进装置。
背景技术
随着城市的发展，地铁的建设越来越多，而城市地铁施工通常为浅埋暗挖隧道，常常隧道所穿越的路线为城市繁华地段，隧道上覆建筑物较多、穿越管线较多、地表人口密集、以及交通繁忙。为了减小隧道施工对地面的影响，控制地表沉降，通常采用盾构法施工地铁隧道，但在遇到一些复杂地质时，需要采用其他施工方法施工隧道，在盾构机施工到已经开挖好的隧道时，需要空推盾构机过已经开挖好的隧道段。
中国专利CN106150511B公开了一种盾构掘进式空推过地裂缝暗挖隧道施工方法，包括步骤：一、地裂缝暗挖隧道内混凝土导台施工；二、导轨及反力架施工；三、盾构机整体向前顶推：将盾构机向前推移并使盾构主机支撑于两道导轨上，再利用盾构机的推进油缸和反力架整体向前顶推，直至顶推到位；顶推过程中，利用盾构机的盾构管片拼装机由后向前在混凝土导台上安装多个盾构管片，盾构管片为底部管片且其位于推进油缸后侧，推进油缸通过底部管片支顶于反力架上，多个底部管片组成供盾构机的后配套台车向前平移的台车平移通道；该方法利用隧道内仰拱回填结构完成盾构空推过地裂缝暗挖隧道施工过程。但盾构机导台通常用钢筋混凝土做成，导台的厚度和钢筋的配筋量由盾构机推进空间高度以及盾构机推进所需反力大小决定，当空推段隧道空间高度有限而使得设计上必须减小混凝土导台厚度时，容易造成导台厚度小，设置在导台上的反力孔深度浅，反力孔与反力架接触面积小应力集中较大，易对孔洞周边导台混凝土造成破坏，反力不足难以推动盾构机向前，当在空推步进段盾构机空间充足，混凝土导台通过做厚以保证给予盾构机足够的反力并避免或减少混凝土导台破坏，然而这必然大大增加了混凝土和钢筋的用量，经济成本增加。
发明内容
本发明的目的在于提供一种用于盾构机空推步进装置，以解决背景技术中提出的问题。施工成本低，速度快的盾构机空推通过暗挖法隧道的施工方法。
为实现上述目的，本发明提供了一种盾构机空推步进装置，包括盾构机导台、反力组件和传力片，所述盾构机导台上设有用于盾构机向前推进的两条导轨，两所述导轨之间设有沿其长度方向间隔设置的多组反力孔；
所述反力组件包括至少一个反力单件，所述反力单件包括定位底板、定位顶板和至少一个支腿，所述定位底板设置在所述盾构机导台上，所述定位顶板位于所述定位底板的上方，所述支腿竖向插设在所述反力孔内，且最靠近盾构机的支腿与所述定位底板和定位顶板均相连，所述支腿内设有液压室，所述液压室内装有用于传递压力的液压油，所述支腿的底部且于远离所述盾构机的一侧开设有安装槽，所述安装槽内设有一端与所述液压室相连的传力杆，所述传力杆的另一端连接有一块承压板，所述承压板的外侧面上包覆有垫片，所述传力杆和承压板均位于所述反力孔内；
所述传力片通过多个固定件固定在所述定位底板和定位顶板之间且其下表面与两条所述导轨相接触，所述传力片远离所述支腿的一侧与所述盾构机尾部的推力装置连接。
进一步的，所述反力组件包括并列设置的两个反力单件，每个所述反力单件包括一个支腿，所述支腿上下贯穿所述定位底板和定位顶板。
进一步的，每组反力孔中所述反力孔的数量为两个，两个所述反力孔之间的距离与两所述反力单件之间的距离相适配。
进一步的，所述反力组件包括并列设置的两个反力单件，每个所述反力单件包括两个支腿，两所述支腿沿盾构机的推进方向竖向间隔设置，靠近盾构机的所述支腿上下贯穿所述定位底板和定位顶板，且两所述支腿的液压室之间通过液压管相连接；所述反力单件还包括两个伸缩构件，两所述连接件用于连接两所述支腿，并分别与所述定位底板和定位顶板相连接。
进一步的，所述伸缩构件包括构件本体和内套杆，所述构件本体用于与所述定位底板或定位顶板相连的一端为呈U形结构的连接部，所述构件本体的另一端为空心的外套杆，所述外套杆上且沿其长度方向间隔设置有多个第一贯通孔，所述内套杆上设有与所述第一贯通孔相适配的多个第二贯通孔；所述内套杆插设在所述外套杆内，且所述内杆与所述外套杆之间通过插接件固定。
进一步的，所述连接部、定位顶板和定位底板上均设有供所述支腿上下贯穿的插装孔，所述支腿与所述插装孔过盈配合。
进一步的，每组反力孔中所述反力孔的数量为四个，四个所述反力孔之间的距离与所述反力组件中的四个所述支腿的之间的距离相适配。
进一步的，所述传力片上且于与所述推力装置相连的一侧设有挂耳，所述挂耳上设有挂耳，所述推力装置的末端设有与所述挂耳相适配的挂钩，所述推力装置收缩时带动所述反力组件和所述传力片前进。
进一步的，所述传力片为隧道拼装管片，所述隧道拼装管片的厚度为40～50cm，所述盾构隧道管片由C50混凝土制成。
进一步的，所述反力组件还包括用于调节所述液压室内油压的液压加压装置。
相比于现有技术，本发明具有以下有益效果：
(1)、本发明的一种盾构机空推步进装置，包括盾构机导台、反力组件和传力片，盾构机导台上设有两条导轨，两导轨之间设有多组反力孔；反力组件包括至少一个反力单件，每个反力单件均包括定位底板、定位顶板和至少一个支腿，支腿竖向插设在反力孔内，支腿内设有液压室，支腿的底部设有与液压室相连的传力杆，传力杆的另一端连接有承压板；该结构中通过设置油压系统，当空推步进装置起反力作用时，支腿上的力均匀分配给构面的支腿，避免单个反力孔受力过大；竖向可拆装插设在反力孔内的支腿与反力孔不会形成杠杆，可有效避免导台上部和下部应力集中而遭到破会。
(2)、本发明的反力组件包括并列设置的两个反力单件，每个反力单件包括两个支腿，两支腿沿盾构机的推进方向竖向间隔设置，靠近盾构机的支腿上下贯穿定位底板和定位顶板，且两支腿的液压室之间通过液压管相连接；反力单件还包括分别与定位底板和定位顶板相连接的两个伸缩构件，该两个伸缩构件用于连接两支腿；该结构设置多个支腿，并且支腿内设有液压贯通，使每个支腿受力均匀，提高支腿的利用率，减少反力对盾构机混凝土导台的破坏。
(3)、本发明通过将反力装置与隧道拼装管片固定连接，将以往的混凝土导台与支腿的线接触调整为面接触，增大混凝土受力面积，增强混凝土提供的水平反力；支腿的底部设有一端与液压室相连的传力杆，传力杆的另一端连接有一块承压板，传力杆和承压板位于反力孔内，该结构设置使得装置对反力孔的大小不需做与支腿严格配套的要求，减少了做工精度，便于施工。
(4)、本发明中承压板的外侧设有橡胶垫片，橡胶垫片可充填反力孔的不平整部位，增大接触面积，减小集中应力。
(5)、本发明中所述伸缩构件包括构件本体和内套杆，所述构件本体用于与所述定位底板或定位顶板相连的一端为呈U形结构的连接部，所述构件本体的另一端为空心的外套杆，所述外套杆上且沿其长度方向间隔设置有多个第一贯通孔，所述内套杆上设有与所述第一贯通孔相适配的多个第二贯通孔；所述内套杆插设在所述外套杆内，且所述内杆与所述外套杆之间通过插接件固定；该结构设置中通过调节伸缩构件，各种步长的盾构机的推进，有益于降低施工成本。
(6)、本发明的盾构机空推步进装置，操作方法简单，相比现有装置可以极大削减导台厚度，减少混凝土用量和配筋用量，减少劳动量，解约经济成本，且有利于加快施工。
除了上面所描述的目的、特征和优点之外，本发明还有其它的目的、特征和优点。下面将参照图，对本发明作进一步详细的说明。
附图说明
构成本申请的一部分的附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是本发明的一种用于盾构机空推步进装置的立体结构示意图；
图2是图1中盾构机空推步进装置的局部放大结构示意图；
图3是图1中盾构机空推步进装置的右视结构示意图；
图4是图1中反力组件的安装结构示意图；
图5是图1中反力组件的A处放大结构示意图；
图6是图1中反力组件的结构示意图；
图7是图1中反力组件的剖面结构示意图；
图8是本发明的另一种用于盾构机空推步进装置的立体结构示意图；
其中，1、盾构机导台，1.1、导轨，1.2、反力孔，2、反力组件，2a、反力单件，2.1、定位底板，2.2、定位顶板，2.3、支腿，2.3a、液压室，2.4、传力杆，2.5、承压板，2.6、垫片，2.7、固定件，2.8、液压管，2.9、伸缩构件，2.9a、构件本体，2.9b、内套杆，2.10、加压装置，3、传力片，3.1、挂耳，4、盾构机，4.1、推力装置。
具体实施方式
以下结合附图对本发明的实施例进行详细说明，但是本发明可以根据权利要求限定和覆盖的多种不同方式实施。
实施例1
参见图1至图7，本发明的一种盾构机空推步进装置，包括设置在盾构机导台1上的反力组件2和传力片3，盾构机导台上设有用于盾构机4向前推进的两条导轨1.1，两导轨之间设有沿其长度方向间隔设置的多组反力孔1.2。
反力组件包括并列设置的两个反力单件2a，反力单件包括两个支腿2.3和液压管2.8，该两个支腿沿盾构机的推进方向竖向间隔设置在反力孔内，靠近盾构机的支腿上下贯穿定位底板和定位顶板，且两个支腿的液压室之间通过液压管2.8相连接；反力单件还包括用于连接两支腿的伸缩构件2.9，伸缩构件的数量为两个，分别与定位底板和定位顶板相连接。伸缩构件包括构件本体2.9a和内套杆2.9b，构件本体用于与定位底板或定位顶板相连的一端为呈U形结构的连接部，且靠近盾构机的支腿也上下贯穿连接部；构件本体的另一端为空心的外套杆，外套杆上且沿其长度方向间隔设置有多个第一贯通孔，内套杆上设有与第一贯通孔相适配的多个第二贯通孔；内套杆插设在外套杆内，且内杆与外套杆之间通过插接件固定。该结构设置多个支腿，并且同一反力单件中两个支腿内的液压室相连通，当空推步进装置起反力作用时，传力片将推力装置施加在其上的推力通过连接部传递给各个支腿，且支腿内的液压油同时将压力分散施加在支腿底部的承压板上，使每个支腿受力均匀，并使与支腿配合的反力孔受力得到均分，减少反力对盾构机混凝土导台的破坏，降低推进成本。
在本实施例中，连接部、定位顶板和定位底板上均设有供支腿上下贯穿的插装孔；每组反力孔中反力孔的数量为四个，四个反力孔之间的距离与反力组件中的四个支腿的之间的距离相适配。
在本实施例中，传力片通过多个固定件2.7固定在定位底板和定位顶板之间且其下表面与两条导轨相接触，传力片远离支腿的一侧与盾构机尾部的推力装置4.1连接。传力片上且于与推力装置相连的一侧设有挂耳3.1，挂耳上设有导向滑槽3.1a，推力装置的末端设置在导向滑槽内，待盾构机的推力装置推出一段距离后，缩回推力装置，拔出支腿，使得推力装置收缩时带动反力组件和传力片前进，再将支腿插入相邻下一组的反力孔中，继续以上的过程；循环前进直到把盾构机顶推到预定位置。
在本实施例中，盾构机导台上设有与盾构机的盾体相适配的弧形槽，两导轨对称设置在弧形槽的两侧；传力片为隧道拼装管片，隧道拼装管片的厚度为40～50cm，盾构隧道管片由抗压强度为C50混凝土制成。
在本实施例中，相邻两组反力孔之间的距离与盾构机每一步向前推进的距离相适配；定位底板的上表面和定位顶板的下表面均与传力片的形状相适配。
在本实施例中，反力组件还包括与液压室相连的加压装置2.10，加压装置设置在支腿上；通过设置该装置可以适当调整支撑板在水平方向的位置，进一步减少反力对盾构机混凝土导台的破坏。
实施例2
参见图9，本发明的另一种盾构机空推步进装置，包括设置在盾构机导台1上的反力组件2和传力片3，盾构机导台上设有用于盾构机4向前推进的两条导轨1.1，两导轨之间设有沿其长度方向间隔设置的多组反力孔1.2，每组反力孔中反力孔的数量为两个，两个反力孔之间的距离与两反力单件之间的距离相适配。
在本实施例中，反力组件包括两个反力单件2a，该反力单件包括定位底板2.1、定位顶板2.2和两个支腿2.3，定位底板设置在盾构机导台上，定位顶板位于定位顶板的上方，支腿竖向插设在反力孔内，且最靠近盾构机的支腿与定位底板和定位顶板相连，具体为支腿上下贯穿定位底板和定位顶板。支腿内设有液压室2.3a，液压室内装有用于传递压力的液压油，支腿的底部且于远离盾构机的一侧设有安装槽，安装槽内设有一端与液压室相连的传力杆2.4，传力杆的另一端连接有一块承压板2.5，承压板的外侧面上覆有垫片2.6，传力杆和承压板位于反力孔内；该装置中，支腿竖向插设在反力孔内，有效避免空推步进装置起反力作用时支腿与形成杠杆，避免导台上部和下部应力集中而遭到破会；通过在设置油压系统，将一个支腿上的力均匀分配给构面的支腿，避免单个反力孔受力过大；垫片2.6为橡胶垫片，橡胶垫片可充填反力孔不平整，增大接触面积，减小集中应力。
在本实施例中，传力片通过多个固定件2.7固定在定位底板和定位顶板之间且其下表面与两条导轨相接触，传力片远离支腿的一侧与盾构机尾部的推力装置4.1连接。传力片上且于与推力装置相连的一侧设有挂耳3.1，推力装置的末端设有与挂耳相适配的挂钩；工作过程中，待盾构机的推力装置推出一段距离后，拔出支腿，推力装置收缩带动反力组件和传力片前进，再将支腿插入相邻下一组的反力孔中，继续以上的过程。
在本实施例中，传力片为隧道拼装管片，隧道拼装管片的厚度为40～50cm，盾构隧道管片由C50混凝土制成；该结构设置易于取材，结构强度高。
本发明的盾构机空推步进装置，操作方法简单，相比现有装置可以极大削减导台厚度，减少混凝土用量和配筋用量，减少劳动量，解约经济成本，且有利于加快施工。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种盾构机空推步进装置，其特征在于，包括设置在盾构机导台(1)上的反力组件(2)和传力片(3)，所述盾构机导台上设有用于盾构机(4)向前推进的两条导轨(1.1)，两所述导轨之间设有沿其长度方向间隔设置的多组反力孔(1.2)；
    所述反力组件包括至少一个反力单件(2a)，所述反力单件包括定位底板(2.1)、定位顶板(2.2)和至少一个支腿(2.3)，所述定位底板设置在所述盾构机导台上，所述定位顶板位于所述定位底板的上方，所述支腿竖向插设在所述反力孔内，且最靠近盾构机的支腿与所述定位底板和定位顶板均相连，所述支腿内设有液压室(2.3a)，所述液压室内装有用于传递压力的液压油，所述支腿的底部且于远离所述盾构机的一侧开设有安装槽，所述安装槽内设有一端与所述液压室相连的传力杆(2.4)，所述传力杆的另一端连接有一块承压板(2.5)，所述承压板的外侧面上包覆有垫片(2.6)，所述传力杆和承压板均位于所述反力孔内；
    所述传力片通过多个固定件(2.7)固定在所述定位底板和定位顶板之间且其下表面与两条所述导轨相接触，所述传力片远离所述支腿的一侧与所述盾构机尾部的推力装置(4.1)连接。
  2. 根据权利要求1所述的盾构机空推步进装置，其特征在于，所述反力组件包括并列设置的两个反力单件(2a)，每个所述反力单件包括一个支腿(2.3)，所述支腿上下贯穿所述定位底板和定位顶板。
  3. 根据权利要求2所述的盾构机空推步进装置，其特征在于，每组反力孔中所述反力孔的数量为两个，两个所述反力孔之间的距离与两所述反力单件之间的距离相适配。
  4. 根据权利要求1所述的盾构机空推步进装置，其特征在于，所述反力组件包括并列设置的两个反力单件(2a)，每个所述反力单件包括两个支腿(2.3)，两所述支腿沿盾构机的推进方向竖向间隔设置，靠近盾构机的所述支腿上下贯穿所述定位底板和定位顶板，且两所述支腿的液压室之间通过液压管(2.8)相连接；所述反力单件还包括两个伸缩构件(2.9)，两所述连接件用于连接两所述支腿，并分别与所述定位底板和定位顶板相连接。
  5. 根据权利要求4所述的盾构机空推步进装置，其特征在于，所述伸缩构件包括构件本体(2.9a)和内套杆(2.9b)，所述构件本体用于与所述定位底板或定位顶板相连的一端为呈U形结构的连接部，所述构件本体的另一端为空心的外套杆，所述外套杆上且沿其长度方向间隔设置有多个第一贯通孔，所述内套杆上设有与所述第一贯通孔相适配的多个第二贯通孔；所述内套杆插设在所述外套杆内，且所述内杆与所述外套杆之间通过插接件固定。
  6. 根据权利要求5所述的盾构机空推步进装置，其特征在于，所述连接部、定位顶板和定位底板上均设有供所述支腿上下贯穿的插装孔，所述支腿与所述插装孔过盈配合。
  7. 根据权利要求4所述的盾构机空推步进装置，其特征在于，每组反力孔中所述反力孔的数量为四个，四个所述反力孔之间的距离与所述反力组件中的四个所述支腿的之间的距离相适配。
  8. 根据权利要求1-7中任一项所述的盾构机空推步进装置，其特征在于，所述传力片上且于与所述推力装置相连的一侧设有挂耳(3.1)，所述推力装置的末端设有与所述挂耳相适配的挂钩，所述推力装置收缩时带动所述反力组件和所述传力片前进。
  9. 根据权利要求1-7中任一项所述的盾构机空推步进装置，其特征在于，所述传力片为隧道拼装管片，所述隧道拼装管片的厚度为40～50cm，所述盾构隧道管片由C50混凝土制成。
  10. 根据权利要求1-7中任一项所述的盾构机空推步进装置，其特征在于，所述反力组件还包括用于调节所述液压室内油压的液压加压装置(2.10)。
PCT/CN2018/108910 2018-09-21 2018-09-30 一种盾构机空推步进装置 Ceased WO2020056794A1 (zh)

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