The utility model discloses a quick detachable bottom mold, which comprises a fixed bottom mold and a movable bottom mold. The fixed bottom mold is disconnected at a set position, and the movable bottom mold is connected at the disconnection position. One end of the movable bottom formwork is hinged with the fixed bottom formwork, and the other end forms a plane joint with the fixed bottom formwork. The angle between the line between the upper end of the plane joint and the hinge point and the plane joint is greater than or equal to 90 degrees. The movable bottom formwork is installed with linear expansion device, which drives the rotation of the movable bottom formwork to erect and demould the formwork, so as to realize the rapid installation and removal of the movable bottom formwork, and the positioning is accurate without any safety risk. The formwork does not need to be adjusted after the linear expansion device is supported in place. One end of the movable bottom formwork is hinged with the fixed bottom formwork, so there is no need to install the connecting bolts, the process is simple, the installation and removal is convenient, the time and labor are saved, and the construction efficiency is high. It is not necessary to set up a trolley, nor occupy the space on both sides of the beam body, so as to save the construction cost and facilitate the layout of the beam field.
【技术实现步骤摘要】
一种快拆式底模
本技术涉及一种混凝土桥梁预制的底模,具体涉及一种快拆式底模。
技术介绍
整孔预制箱梁的吊点通常设置在梁体两端的顶板加厚处,内模脱出后梁体可直接进行吊装提梁,整个过程底模是固定的,无需拆除。但在一些超大型整孔预制箱梁中,由于梁体自重极大,梁体顶板加厚处的强度不足以承受梁体吊装时的自重,其采取的解决方案是在梁体底部另外设置垫梁,再通过垫梁进行吊装。而为了安装垫梁,需拆除对应位置的底模。以往底模的处理方式为:将需拆除的活动底模两端设置一定斜度,拆除时通过外力使其下降,落至一个专用的小车上,再将小车横移出去。这种方式存在以下缺点:(1)内模拆除时,需将活动底模两端与相邻底模之间的连接螺栓全部拆除,安装时,又需全部装上,工作量大。(2)活动底模下降时需借助外力,下降过程若无导向装置则底模下降速度和方向都不可控,存在安全风险。(3)活动底模每次安装时都需要花费大量的时间和精力来进行精准定位。(4)小车的横移需要空间,需在梁体两侧预留出足够的宽度以便存放拆除的活动底模和垫梁。 ...
【技术保护点】
1.一种快拆式底模,包括固定底模和活动底模,固定底模在设定位置处断开,活动底模连接于断开处,其特征在于:所述活动底模的一端与固定底模铰接,另一端与固定底模之间形成平面接缝,平面接缝的上端点和铰接点之间的连线与平面接缝之间的夹角大于或等于90度,活动底模上安装有直线伸缩式装置,直线伸缩式装置带动活动底模旋转实现立模和脱模。/n
【技术特征摘要】
1.一种快拆式底模,包括固定底模和活动底模,固定底模在设定位置处断开,活动底模连接于断开处,其特征在于:所述活动底模的一端与固定底模铰接,另一端与固定底模之间形成平面接缝,平面接缝的上端点和铰接点之间的连线与平面接缝之间的夹角大于或等于90度,活动底模上安装有直线伸缩式装置,直线伸缩式装置带动活动底模旋转实现立模和脱模。
2.如权利要求1所述的快拆式底模,其特征在于:所述活动底模为直线型模,其铰接端端面为沿竖直面的平面,另一端端面为斜面。
3.如权利要求1所述的快拆式底模,其特征在于:所述活动底模包括有高度差的两水平段和连接两水平段的倾斜段,两水平段的端面为沿竖直面的平面...
【专利技术属性】
技术研发人员:杨建国,石峰,黄娟,黄欢,李纲平,李辉,
申请(专利权)人:湖南中铁五新钢模有限责任公司,
类型:新型
国别省市:湖南;43
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