CN202157327U - 铸造机基础附井孔桩开挖顶进装置 - Google Patents
铸造机基础附井孔桩开挖顶进装置 Download PDFInfo
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Abstract
本实用新型涉及土建基础施工设备，是一种铸造机基础附井孔桩开挖顶进装置，它具有若干节护壁筒，其特征是：在护壁筒顶端安装有承压平台，承压平台上固定有承压短柱，承压短柱上装有千斤顶，千斤顶上装有横梁；本实用新型解决了现有铸造机基础附井孔桩开挖成本高、进度慢、易发生施工人员冻伤并需要大型专用设备等问题，特别适合于地下有高承压水，易发生涌砂、坍塌现象、地质条件不好地区的铸造机基础附井孔桩的开挖施工。
Description
铸造机基础附井孔桩开挖顶进装置
[0001](-)技术领域：本实用新型涉及土建基础施工设备，尤其是一种铸造机基础附井孔桩开挖顶进装置。
[0002] (二)背景技术：目前国内铸造机基础附井孔桩开挖一般采用冷冻法施工，该方法是采用专用设备将液氮输入铸造机基础附井拟开挖的土层中，在孔桩四周形成冻土墙，承受水、土压力并阻隔地下水，在它的保护下进行基础、孔桩开挖。但存在施工成本高、进度慢、 易发生施工人员冻伤并需要大型专用设备等问题。
[0003] 曰发明内容：本实用新型的目的就是要解决现有铸造机基础附井孔桩开挖成本高、进度慢、易发生施工人员冻伤，并需要大型专用设备等问题，提供一种铸造机基础附井孔桩开挖顶进装置。
[0004] 本实用新型的具体方案是：设计一护壁筒，其特征是：在护壁筒顶端安装有承压平台，承压平台上固定有承压短柱，承压短柱上装有千斤顶，千斤顶上装有横梁。
[0005] 本实用新型中所述千斤顶、承压短柱、护壁筒三者同轴线布置，且所述横梁和承压平台的中心点位于轴线上。
[0006] 本实用新型中所述承压平台是采用工字钢制成十字中心架，中心架周边采用四根工字钢围成菱形平台架，平台架中心处上下两面焊装钢板构成承压平台。
[0007] 本实用新型的工作原理是：首先将一节护壁筒吊至附井孔桩拟开挖处，然后装配工件，工件装配的要求为：承压平台放置在护壁筒上，承压短柱放置在承压平台上，千斤顶置于承压短柱上，最后将横梁置于千斤顶顶杆头上。工装完毕后，启动千斤顶顶升横梁至基础沉井壁变径台阶处，参见图1，此时，由于基础配重(铸造机基础井壁本身自重及与地基之间的侧摩阻力之和为配重）远远大于千斤顶向上的作用力，横梁无法向上运动，根据作用力与反作用力的原理，千斤顶产生的的作用力，只能向下由承压短柱、承压平台传替给护壁筒，并将钢制护壁筒压入流砂层，阻隔或减少地下压力水对护壁筒孔内流砂层开挖的影响， 完成第一节护壁筒内的孔桩开挖作业。拆除工装后将第二节护壁筒与第一节护壁筒对焊牢固严密，按同样的工艺完成第二节护壁筒内成孔作业，如此循环，直至铸造机基础附井孔桩开挖至预期的深度。
[0008] 本实用新型结构简单，制作方便，不需要使用大型机械设备，施工成本低，进度块， 并且由于存在护壁筒的保护，孔桩开挖可实现安全作业。
[0009] ㈣附图说明：
[0010] 图1是本实用新型总体结构及施工现场布置示意图；
[0011] 图2是承压平台的主视图；
[0012] 图3是承压平台的俯视图。
[0013] 图中：1-护壁筒，2-承压平台，3-承压短柱，4-千斤顶，5-横梁，6-基础附井，7-十字中心架，8-工字钢，9-上钢板，10-下钢板。
[0014] ㈤具体实施方式：
[0015] 参见图1，本实用新型具有四节护壁筒1，特别是：在护壁筒1顶端安装有承压平台 2，承压平台2上固定有承压短柱3，承压短柱3上装有千斤顶4，千斤顶4上装有横梁5。[0016] 本实施中所述千斤顶4、承压短柱3、护壁筒1三者同轴线布置，且所述横梁5和承压平台2的中心点位于轴线上。
[0017] 本实施例中所述承压平台2 (参见图2、3)是采用工字钢8制成十字中心架7，中心架7周边采用四根工字钢8围成菱形平台架，平台架中心处上下两面焊装钢板9和10构成承压平台2。
Claims (3)
1.铸造机基础附井孔桩开挖顶进装置，具有若干节护壁筒，其特征是：在护壁筒顶端安装有承压平台，承压平台上固定有承压短柱，承压短柱上装有千斤顶，千斤顶上装有横MTTC。
2.根据权利要求1所述的铸造机基础附井孔桩开挖顶进装置，其特征是：所述千斤顶、 承压短柱、护壁筒三者同轴线布置，且所述横梁和承压平台的中心点位于轴线上。
3.根据权利要求1所述的铸造机基础附井孔桩开挖顶进装置，其特征是：所述承压平台是采用工字钢制成十字中心架，中心架周边采用四根工字钢围成菱形平台架，平台架中心处上下两面焊装钢板构成承压平台。
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102635126A (zh) * | 2012-03-13 | 2012-08-15 | 浙江永杰铝业有限公司 | 一种铝合金热轧板锭铸造井的施工方法 |
| CN107780420A (zh) * | 2016-08-27 | 2018-03-09 | 上海宝冶集团有限公司 | 铸造机下液压活塞井的施工方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102635126A (zh) * | 2012-03-13 | 2012-08-15 | 浙江永杰铝业有限公司 | 一种铝合金热轧板锭铸造井的施工方法 |
| CN107780420A (zh) * | 2016-08-27 | 2018-03-09 | 上海宝冶集团有限公司 | 铸造机下液压活塞井的施工方法 |
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