WO2021022610A1 - 一种上行式移动模架后支点结构 - Google Patents

一种上行式移动模架后支点结构 Download PDF

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Publication number
WO2021022610A1
WO2021022610A1 PCT/CN2019/104715 CN2019104715W WO2021022610A1 WO 2021022610 A1 WO2021022610 A1 WO 2021022610A1 CN 2019104715 W CN2019104715 W CN 2019104715W WO 2021022610 A1 WO2021022610 A1 WO 2021022610A1
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Prior art keywords
sliding
guide rail
movable formwork
transverse
main
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PCT/CN2019/104715
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English (en)
French (fr)
Inventor
胡滨
吴德帝
江明坤
杨成明
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山东恒堃机械有限公司
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Publication of WO2021022610A1 publication Critical patent/WO2021022610A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
    • E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections

Definitions

  • the utility model relates to the technical field of bridge construction equipment, in particular to a rear fulcrum structure of an upward moving formwork.
  • the mobile formwork bridge building machine is a kind of self-contained formwork, which uses the platform or pier column as the support to cast the bridge on site. It has the effects of good construction quality, simple construction operation and low cost. It has been widely used in the continuous beam construction of highway bridges and railway bridges.
  • the mobile formwork moves longitudinally through the hole, it moves to the next span relative to the length of the concrete box girder.
  • the concrete box girder is in a curved shape
  • when the mobile formwork moves longitudinally it will produce a transverse bending force. Bending deformation affects the lateral rigidity of the movable mold base, which reduces the stability of the movable mold base when it moves through the hole longitudinally.
  • the utility model provides a rear fulcrum structure of an upward movable formwork which can swing when moving longitudinally along a curved box girder through a hole to achieve lateral rigidity and stability.
  • a rear fulcrum structure of an ascending mobile formwork includes a concrete box beam and a mobile formwork at the upper end of the concrete box beam, and further includes:
  • Guide rails are laid on the concrete box girder along the length of the concrete box girder;
  • the transversal beam is horizontally arranged above the concrete box girder in the left and right direction, and the lower end of the transversal beam is provided with a guide rail slide, and the transversal beam is slidably installed on the guide rail through the guide rail slide;
  • One end of the longitudinal movement cylinder is connected with the guide rail box beam, the head end of the piston rod is connected with the guide rail sliding seat, and the axis of the longitudinal movement cylinder is parallel to the guide rail;
  • the lower end of the sliding seat is provided with a sliding groove, and the sliding seat is slidably installed on the transverse beam through the sliding groove in the left and right directions.
  • the two main beams are located on the corresponding sliding seat on the same side on;
  • the sliding bracket is located between the two sliding seats.
  • the sliding bracket is slidably mounted on the transverse beam in the left-right direction.
  • the support is installed on the transverse beam.
  • the end of the transverse cylinder is connected with the sliding bracket, and the piston rod head The end is connected to the support, and the axis of the traverse cylinder is parallel to the length of the traverse beam;
  • the longitudinal beam is horizontally arranged between the two main beams, and its two ends are respectively fixed to the corresponding main beam on the same side by bolts.
  • the rotating shaft is arranged in the vertical direction, and the upper end of the rotating shaft is rotatably installed in the middle part of the longitudinal beam. The lower end of the rotating shaft is fixed on the sliding bracket.
  • the left and right sides of the sliding seat are respectively provided with vertical baffles along the vertical direction, and the distance between the two vertical baffles is greater than the width of the main beam.
  • the concrete box girder In order to improve the strength when the concrete box girder moves along the straight line, it also includes a pin shaft.
  • the main beam and the sliding seat are provided with mutually coaxial pin holes, and the pin shaft is inserted into the pin holes of the main beam and the sliding seat.
  • the front and rear sides of the upper end of the transverse beam are respectively provided with flanges extending outward in the horizontal direction, and the two gusset plates are respectively arranged under the corresponding flanges on the same side. It is fixed on the sliding bracket by bolts.
  • the beneficial effect of the utility model is that when the concrete box girder is poured, the movable formwork is moved down, the lower end of the main beam sits on the corresponding sliding seat, and then the longitudinally moving oil cylinder acts to drive the horizontally moving beam to pass through the guide rail sliding seat along the guide rail Move to realize the longitudinal movement of the driving mobile formwork.
  • the main beam rotates relative to the shaft through the longitudinally moving crossbeam to realize the deflection of the mobile formwork, which is adapted to the bending part.
  • the traverse cylinder moves, and it drives the sliding bracket to slide along the traverse beam, so as to drive the main beam to traverse, which can meet the lateral fine adjustment of the formwork when the main box beam is poured.
  • the slide at the lower end of the main beam slides along the traverse beam during the horizontal movement. The whole process is stable and reliable. Because the movable formwork can be deflected, the movable formwork can realize the tail-throwing over the curve, variable span construction, and improve its lateral rigidity and stability during longitudinal movement.
  • Figure 1 is a schematic diagram of the mobile formwork of the utility model being lifted to an elevation state
  • Figure 2 is a schematic diagram of the state where the main beam of the movable formwork of the present invention is in contact with the sliding seat;
  • Figure 3 is a schematic diagram of an enlarged structure of the sliding seat part of the utility model
  • Figure 4 is a schematic side view of the sliding bracket of the utility model
  • Figure 5 is a schematic side view of the sliding seat of the utility model
  • a rear fulcrum structure of an ascending mobile formwork includes a concrete box beam 1 and a mobile formwork located at the upper end of the concrete box beam 1, and also includes a guide rail 2, which is laid on the concrete box beam 1 along the length of the concrete box beam 1;
  • the transversal beam 4 is horizontally arranged above the concrete box girder 1 in the left and right direction.
  • the lower end of the transversal beam 4 is provided with a guide rail slide 3, and the transversal beam 4 is slidably mounted on the guide rail 2 through the guide rail slide 3;
  • the longitudinal displacement cylinder 14 One end is connected to the box beam of the guide rail 2, and the head end of the piston rod is connected to the guide rail slide 3, and the axis of the longitudinal movement cylinder 14 is parallel to the guide rail 2.
  • the seat 5 is slidably mounted on the transverse beam 4 in the left and right directions through the slide groove 17.
  • the two main beams 11 are located on the corresponding slide seat 5 on the same side; the slide bracket 8 is located on the two slide between the seats 5, the sliding bracket 8 is slidably mounted on the traverse beam 4 in the left and right direction.
  • a support 7 is installed on the traverse beam 4.
  • the tail end of the traverse cylinder 6 is connected with the sliding bracket 8, and the head end of the piston rod is connected to the
  • the supports 7 are connected, and the axis of the traverse cylinder 6 is parallel to the longitudinal direction of the traverse beam 4; and the longitudinal beam 10 is horizontally arranged between the two main beams 11, and its two ends are respectively fixed on the same side by bolts.
  • the rotating shaft 9 is arranged in the vertical direction, the upper end of the rotating shaft 9 is rotatably installed in the middle part of the longitudinally moving beam 10, and the lower end of the rotating shaft 9 is fixed on the sliding bracket 8.
  • the movable formwork will move down, and the lower end of the main beam 11 will be located at the corresponding
  • the longitudinal shifting cylinder 14 is activated, and the transverse shifting beam 4 is driven to move along the guide rail 2 through the guide rail slide 3 to realize the longitudinal movement of the driving mobile formwork.
  • the longitudinal shifting process it will travel to the curved part of the concrete box beam 1
  • the main beam 11 rotates relative to the rotating shaft 9 through the longitudinally moving cross beam 10
  • the deflection of the movable mold base is realized.
  • the horizontally moving cylinder 6 acts, and it drives the sliding bracket 8 to slide along the horizontally moving beam 4 to realize the drive
  • the horizontal movement of the main girder 11 can satisfy the horizontal fine adjustment of the formwork when the main box girder is poured.
  • the sliding seat 5 at the lower end of the main girder 11 slides along the horizontal movement beam 4 during the horizontal movement, and the whole process is stable and reliable. Because the movable formwork can be deflected, the movable formwork can realize the tail-throwing over the curve, variable span construction, and improve its lateral rigidity and stability during longitudinal movement.
  • the left and right sides of the sliding seat 5 are respectively provided with vertical baffles 13 along the vertical direction, and the distance between the two vertical baffles 13 is greater than the width of the main beam 11.
  • the two vertical baffles 13 can limit the left and right positions of the main beam 11 to prevent the main beam 11 from detaching from the sliding seat 5 when the movable formwork moves longitudinally, and the distance between the two vertical baffles 13 is greater than that of the main beam 11. Therefore, when the movable mold base rotates through the rotating shaft 9, the main beam 11 can also be deflected between the two vertical baffles 13 without affecting the deflection of the main beam 11.
  • the main beam 11 and the sliding seat 5 are provided with pin holes coaxial with each other.
  • the pin 12 is inserted into the pin holes of the main girder 11 and the sliding seat 5.
  • the transverse girder 4 is driven by the rotating shaft 9 and the two pin shafts 12
  • the longitudinal movement of the main beam 11 improves the connection strength between the transverse beam 4 and the main beam 11 and further improves the reliability of the equipment.
  • the front and rear sides of the upper end of the traverse beam 4 are respectively provided with flanges 15 extending outward in the horizontal direction.
  • Two gusset plates 16 are respectively arranged under the corresponding flanges 15 on the same side.
  • the gusset plates 16 are fixed to the sliding bracket 8 by bolts. on.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

一种上行式移动模架后支点结构，当混凝土箱梁浇筑完毕后，移动模架下移，主梁的下端坐落于对应的滑座上，之后纵移油缸动作，驱动横移梁通过导轨滑座沿导轨移动，实现驱动移动模架纵移，在纵移的过程中当行驶到混凝土箱梁弯曲部位时，主梁通过纵移横梁相对转轴转动，从而实现移动模架的偏转，其适配弯曲部位，横移油缸动作，其驱动滑动支架沿横移梁滑动，从而实现驱动主梁横移，可以满足主箱梁浇筑时模板的横向微调，横移时主梁下端的滑座沿横移梁滑动，整个过程平稳可靠。由于移动模架可以发生偏转，实现移动模架甩尾过曲线，变跨径施工，并且提高其横向刚度和纵移时的稳定性。

Description

一种上行式移动模架后支点结构 技术领域
本实用新型涉及桥梁施工设备技术领域，具体涉及一种上行式移动模架后支点结构。
背景技术
移动模架造桥机是一种自带模板，利用承台或墩柱作为支承，对桥梁进行现场浇筑的施工机械。其具有施工质量好，施工操作简便，成本低廉等效果。已广泛地被采用在公路桥、铁路桥的连续梁施工中。移动模架在纵移过孔时其相对混凝土箱梁长度方向移动至下一跨，但是遇到混凝土箱梁是弯曲形状时，移动模架在纵移时，其会产生横向弯曲受力，发生弯曲变形，影响移动模架的横向刚度，从而使移动模架纵移过孔时的稳定性下降。
发明内容
本实用新型为了克服以上技术的不足，提供了一种移动模架在沿曲线箱梁纵移过孔时可以摆动、实现提供横向刚度及稳定性的上行式移动模架后支点结构。
本实用新型克服其技术问题所采用的技术方案是：
一种上行式移动模架后支点结构，包括混凝土箱梁以及位于混凝土箱梁上端的移动模架，还包括：
导轨，沿混凝土箱梁的长度方向铺设于混凝土箱梁上；
横移梁，沿左右方向水平设置于混凝土箱梁上方，横移梁下端设置有导轨滑座，横移梁通过导轨滑座滑动安装于导轨上；
纵移油缸，其一端与导轨箱梁，其活塞杆头端与导轨滑座相连，纵移油缸的轴线与导轨相平行；
两个滑座，滑座的下端设置有滑槽，滑座通过滑槽沿左右方向滑动安装于横移梁上，当移动模架落模时，两个主梁坐落于同侧对应的滑座上；
滑动支架，位于两个滑座之间，滑动支架沿左右方向滑动安装于横移梁上，所述横移梁上安装有支座，横移油缸的尾端与滑动支架相连，其活塞杆头端与支座相连，横移油缸的轴线与横移梁的长度方向相平行；以及
纵移横梁，水平设置于两个主梁之间，其两端分别通过螺栓固定于同侧对应的主梁上，转轴沿竖直方向设置，转轴的上端转动安装于纵移横梁的中间部位，转轴的下端固定于滑动支架上。
为了防止主梁从滑座上脱离，上述滑座的左右两侧分别沿竖直方向设置有立挡板，两个立挡板之间的间距大于主梁的宽度。
为了提高当沿直线的混凝土箱梁纵移时的强度，还包括销轴，主梁与滑座上设置有相互同轴的销孔，销轴插入主梁与滑座的销孔中。
为了防止滑动支架从横移梁上脱离，上述横移梁上端的前后两侧分别沿水平方向向外侧延伸设置有翼缘，两个扣板分别设置于同侧对应的翼缘的下方，扣板通过螺栓固定于滑动支架上。
本实用新型的有益效果是：当混凝土箱梁浇筑完毕后，移动模架下移，主梁的下端坐落于对应的滑座上，之后纵移油缸动作，驱动横移梁通过导轨滑座沿导轨移动，实现驱动移动模架纵移，在纵移的过程中当行驶到混凝土箱梁弯曲部位时，主梁通过纵移横梁相对转轴转动，从而实现移动模架的偏转，其适配弯曲部位，横移油缸动作，其驱动滑动支架沿横移梁滑动，从而实现驱动主梁横移，可以满足主箱梁浇筑时模板的横向微调，横移时主梁下端的滑座沿横移梁滑动，整个过程平稳可靠。由于移动模架可以发生偏转，实现移动模架甩尾过曲线，变跨径施工，并且提高其横向刚度和纵移时的稳定性。
附图说明
图1为本实用新型的移动模架顶升至标高状态的示意图；
图2为本实用新型的移动模架的主梁与滑座相接触的状态示意图；
图3为本实用新型的滑座部位的放大结构示意图；
图4为本实用新型的滑动支架的侧视结构示意图；
图5为本实用新型的滑座的侧视结构示意图；
图中，1.混凝土箱梁 2.导轨 3.导轨滑座 4.横移梁 5.滑座 6.横移油缸 7.支座 8.滑动支架 9.转轴 10.纵移横梁 11.主梁 12.销轴 13.立挡板 14.纵移油缸 15.翼缘 16.扣板 17.滑槽。
具体实施方式
下面结合附图1至附图5对本实用新型做进一步说明。
一种上行式移动模架后支点结构，包括混凝土箱梁1以及位于混凝土箱梁1上端的移动模架，还包括：导轨2，沿混凝土箱梁1的长度方向铺设于混凝土箱梁1上；横移梁4，沿左右方向水平设置于混凝土箱梁1上方，横移梁4下端设置有导轨滑座3，横移梁4通过导轨滑座3滑动安装于导轨2上；纵移油缸14，其一端与导轨2箱梁，其活塞杆头端与导轨滑座3相连，纵移油缸14的轴线与导轨2相平行；两个滑座5，滑座5的下端设置有滑槽17，滑座5通过滑槽17沿左右方向滑动安装于横移梁4上，当移动模架落模时，两个主 梁11坐落于同侧对应的滑座5上；滑动支架8，位于两个滑座5之间，滑动支架8沿左右方向滑动安装于横移梁4上，横移梁4上安装有支座7，横移油缸6的尾端与滑动支架8相连，其活塞杆头端与支座7相连，横移油缸6的轴线与横移梁4的长度方向相平行；以及纵移横梁10，水平设置于两个主梁11之间，其两端分别通过螺栓固定于同侧对应的主梁11上，转轴9沿竖直方向设置，转轴9的上端转动安装于纵移横梁10的中间部位，转轴9的下端固定于滑动支架8上。当移动模架合模时，移动模架的小车上的千斤顶将主梁11顶起到标高位置，当混凝土箱梁1浇筑完毕后，移动模架下移，主梁11的下端坐落于对应的滑座5上，之后纵移油缸14动作，驱动横移梁4通过导轨滑座3沿导轨2移动，实现驱动移动模架纵移，在纵移的过程中当行驶到混凝土箱梁1弯曲部位时，主梁11通过纵移横梁10相对转轴9转动，从而实现移动模架的偏转，其适配弯曲部位，横移油缸6动作，其驱动滑动支架8沿横移梁4滑动，从而实现驱动主梁11横移，可以满足主箱梁浇筑时模板的横向微调，横移时主梁11下端的滑座5沿横移梁4滑动，整个过程平稳可靠。由于移动模架可以发生偏转，实现移动模架甩尾过曲线，变跨径施工，并且提高其横向刚度和纵移时的稳定性。
进一步的，滑座5的左右两侧分别沿竖直方向设置有立挡板13，两个立挡板13之间的间距大于主梁11的宽度。两个立挡板13可以对主梁11起到限位左右，防止移动模架纵移时，主梁11从滑座5上脱离，同时两个立挡板13之间的间距大于主梁11的宽度，从而移动模架通过转轴9转动时，主梁11也可以在两个立挡板13之间中偏转，不会影响主梁11的偏摆。
优选的，还包括销轴12，主梁11与滑座5上设置有相互同轴的销孔。当浇筑的混凝土箱梁1是直线形并非是歪曲的时候，销轴12插入主梁11与滑座5的销孔中。此时移动模架纵移过孔时是完全沿混凝土箱梁1的长度方向行进的，因此纵移油缸14动作时，横移梁4通转轴9、两个销轴12三个受力点驱动主梁11纵移，提高了横移梁4与主梁11之间的连接强度，进一步提高了设备的可靠性。
横移梁4上端的前后两侧分别沿水平方向向外侧延伸设置有翼缘15，两个扣板16分别设置于同侧对应的翼缘15的下方，扣板16通过螺栓固定于滑动支架8上。通过在横移梁4的翼缘15下方设置扣板16，可以有效防止滑动支架8从横移梁4上脱离，提高了设备运行的稳定性。

Claims (4)

  1. 一种上行式移动模架后支点结构，包括混凝土箱梁(1)以及位于混凝土箱梁(1)上端的移动模架，其特征在于，还包括：
    导轨(2)，沿混凝土箱梁(1)的长度方向铺设于混凝土箱梁(1)上；
    横移梁(4)，沿左右方向水平设置于混凝土箱梁(1)上方，横移梁(4)下端设置有导轨滑座(3)，横移梁(4)通过导轨滑座(3)滑动安装于导轨(2)上；
    纵移油缸(14)，其一端与导轨(2)箱梁，其活塞杆头端与导轨滑座(3)相连，纵移油缸(14)的轴线与导轨(2)相平行；
    两个滑座(5)，滑座(5)的下端设置有滑槽(17)，滑座(5)通过滑槽(17)沿左右方向滑动安装于横移梁(4)上，当移动模架落模时，两个主梁(11)坐落于同侧对应的滑座(5)上；
    滑动支架(8)，位于两个滑座(5)之间，滑动支架(8)沿左右方向滑动安装于横移梁(4)上，所述横移梁(4)上安装有支座(7)，横移油缸(6)的尾端与滑动支架(8)相连，其活塞杆头端与支座(7)相连，横移油缸(6)的轴线与横移梁(4)的长度方向相平行；以及
    纵移横梁(10)，水平设置于两个主梁(11)之间，其两端分别通过螺栓固定于同侧对应的主梁(11)上，转轴(9)沿竖直方向设置，转轴(9)的上端转动安装于纵移横梁(10)的中间部位，转轴(9)的下端固定于滑动支架(8)上。
  2. 根据权利要求1所述的上行式移动模架后支点结构，其特征在于：所述滑座(5)的左右两侧分别沿竖直方向设置有立挡板(13)，两个立挡板(13)之间的间距大于主梁(11)的宽度。
  3. 根据权利要求1所述的上行式移动模架后支点结构，其特征在于：还包括销轴(12)，主梁(11)与滑座(5)上设置有相互同轴的销孔，销轴(12)插入主梁(11)与滑座(5)的销孔中。
  4. 根据权利要求1所述的上行式移动模架后支点结构，其特征在于：所述横移梁(4)上端的前后两侧分别沿水平方向向外侧延伸设置有翼缘(15)，两个扣板(16)分别设置于同侧对应的翼缘(15)的下方，扣板(16)通过螺栓固定于滑动支架(8)上。
PCT/CN2019/104715 2019-08-07 2019-09-06 一种上行式移动模架后支点结构 WO2021022610A1 (zh)

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