Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Core-through jack anchor withdrawing equipment
The invention discloses cross-core jack anchor withdrawing equipment, and relates to the technical field of bridge prestress tension engineering anchor withdrawing operation, the cross-core jack anchor withdrawing equipment comprises a jack, and the rear end of the jack is provided with a first working anchor plate. According to the cross-core jack anchor withdrawing equipment, the grabbing strength of the anchor withdrawing auxiliary fixing barrel on a prestressed steel strand is improved, the prestressed steel strand is prevented from disengaging or slipping, meanwhile, the prestressed steel strand can be temporarily braked in the anchor withdrawing auxiliary fixing barrel, the telescopic oil cylinder can stretch again after returning, secondary tensioning can be conducted on the prestressed steel strand, and the prestressed steel strand can be tensioned again. The limit range of single-time tensioning of the telescopic oil cylinder is increased, local retraction of the prestressed steel strand after first-time tensioning is prevented, positioning and clamping can be adapted according to different materials, different contact surfaces and different friction coefficients of the prestressed steel strand, three-layer blocking protection is provided for the prestressed steel strand, safe anchor withdrawing is ensured, and the service life of the prestressed steel strand is prolonged. And the re-tensioning time is shortened, the anchor can be directly withdrawn on site, and continuous operation can be realized.
本发明公开了一种穿心式千斤顶退锚设备，本发明涉及桥梁预应力张拉工程退锚作业技术领域，包括千斤顶，所述千斤顶的后端安装有工作锚板一。该穿心式千斤顶退锚设备，提高退锚辅定筒对预应力钢绞线的抓握强度，防止预应力钢绞线脱丝或滑脱的同时，能够将预应力钢绞线在退锚辅定筒内进行暂时制动，使得伸缩油缸能够回程之后再次伸展，能够对预应力钢绞线进行二次张拉，提升伸缩油缸单次张拉的极限范围，防止被第一次张拉之后的预应力钢绞线方式局部回缩，能够根据预应力钢绞线的不同材质、不同接触面以及不同的摩擦系数来适应定位与夹持，为预应力钢绞线提供三层阻挡保护，确保安全退锚，减省重新张拉时间，可现场直接退锚，可连续作业。
Core-through jack anchor withdrawing equipment
The invention discloses cross-core jack anchor withdrawing equipment, and relates to the technical field of bridge prestress tension engineering anchor withdrawing operation, the cross-core jack anchor withdrawing equipment comprises a jack, and the rear end of the jack is provided with a first working anchor plate. According to the cross-core jack anchor withdrawing equipment, the grabbing strength of the anchor withdrawing auxiliary fixing barrel on a prestressed steel strand is improved, the prestressed steel strand is prevented from disengaging or slipping, meanwhile, the prestressed steel strand can be temporarily braked in the anchor withdrawing auxiliary fixing barrel, the telescopic oil cylinder can stretch again after returning, secondary tensioning can be conducted on the prestressed steel strand, and the prestressed steel strand can be tensioned again. The limit range of single-time tensioning of the telescopic oil cylinder is increased, local retraction of the prestressed steel strand after first-time tensioning is prevented, positioning and clamping can be adapted according to different materials, different contact surfaces and different friction coefficients of the prestressed steel strand, three-layer blocking protection is provided for the prestressed steel strand, safe anchor withdrawing is ensured, and the service life of the prestressed steel strand is prolonged. And the re-tensioning time is shortened, the anchor can be directly withdrawn on site, and continuous operation can be realized.
本发明公开了一种穿心式千斤顶退锚设备，本发明涉及桥梁预应力张拉工程退锚作业技术领域，包括千斤顶，所述千斤顶的后端安装有工作锚板一。该穿心式千斤顶退锚设备，提高退锚辅定筒对预应力钢绞线的抓握强度，防止预应力钢绞线脱丝或滑脱的同时，能够将预应力钢绞线在退锚辅定筒内进行暂时制动，使得伸缩油缸能够回程之后再次伸展，能够对预应力钢绞线进行二次张拉，提升伸缩油缸单次张拉的极限范围，防止被第一次张拉之后的预应力钢绞线方式局部回缩，能够根据预应力钢绞线的不同材质、不同接触面以及不同的摩擦系数来适应定位与夹持，为预应力钢绞线提供三层阻挡保护，确保安全退锚，减省重新张拉时间，可现场直接退锚，可连续作业。
Core-through jack anchor withdrawing equipment
一种穿心式千斤顶退锚设备
KANG ZEWEN (Autor:in) / ZENG XIANGLAN (Autor:in) / ZENG ZHAOYI (Autor:in) / GAO WEIJIAN (Autor:in) / JIANG ZHIHAI (Autor:in) / PENG YAO (Autor:in) / ZHOU FENG (Autor:in) / LI XIONG (Autor:in) / GUO KAI (Autor:in) / ZHANG JINJIN (Autor:in)
10.10.2023
Patent
Elektronische Ressource
Chinesisch
Tool clamping piece anchor withdrawing device and anchor withdrawing method
| Europäisches Patentamt | 2020
Prestressed tendon anchor withdrawing tool structure and anchor withdrawing method
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2024
Novel prestressed steel strand releasing anchor withdrawing device and using method thereof
| Europäisches Patentamt | 2023