Tensioning device of supporting type anchorage device and using method thereof
A tensioning device and support type technology, which is applied in the processing of building materials, construction, building construction, etc., can solve the problems of high cost, increased anchorage loss, and inconvenient measurement of nut locking force, so as to achieve convenient operation and reduce forecasting. Effects of stress loss, elimination of the human factor, and operating space constraints
Inactive Publication Date: 2019-05-21
SHANGHAI CONSTRUCTION GROUP +1
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Problems solved by technology
[0004] For the nut tightening and locking of the existing supporting anchors rely on manual operation, not only limited by the operating process and operating space, but also increases the anchoring loss, and the measurement of the nut locking force is inconvenient and costly
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[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention. For the convenience of description, the "up" and "down" described below are consistent with the directions of up and down in the drawings, but this should not be a limitation of the technical solution of the present invention.
[0034] to combine Figure 1 to Figure 13 Illustrate the tensioning device of the support type anchorage of the present invention, it comprises:
[0035] The tension jack 10 includes a tension mechanism (not shown in the figure) and the first hydraulic cylinder 11 connected thereto. The tension jack 10 is sleeved on the steel strand 3 and is prestressed and tensioned. The above-mentioned tension ja...
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The invention discloses a tensioning device of a supporting type anchorage device and a using method of the tensioning device, and relates to the field of prestressed building construction. The problems that nut screwing and locking of an existing bearing type anchorage device depend on manual operation and are limited by the operation technology and the operation space, anchoring loss is increased, nut locking force is inconvenient to measure, and cost is high are solved. The tensioning device comprises a tensioning jack, a screwing device and a hydraulic control system, wherein the tensioning jack comprises a tensioning mechanism and a first hydraulic oil cylinder connected with the tensioning mechanism, and the tensioning jack is used for carrying out prestress tensioning on a steel strand; the screwing device is fixed at the bottom of the tensioning jack so as to fasten a nut of the supporting type anchorage device; the screwing device comprises a sleeve matched with the nut and sleeving the nut, a transmission mechanism which sleeve the sleeve and can drive the sleeve to rotate so as to screw the nut, and a second hydraulic oil cylinder connected with the transmission mechanism; the hydraulic control system is in oil way connection with the first hydraulic oil cylinder and the second hydraulic oil cylinder, and a pressure gauge of the hydraulic control system is used for monitoring pressure data of the first hydraulic oil cylinder and the second hydraulic oil cylinder.
Description
technical field [0001] The invention relates to the technical field of prestressed building construction, in particular to a tensioning device for a supporting anchor and a method for using the same. Background technique [0002] Support anchorage is a type of prestressed anchorage. At present, it is mainly nut anchorage. It has the characteristics of high anchorage efficiency and small anchorage loss. The anchorage loss of quasi-prestressed tendons accounts for more than 70% of the total prestress loss, so the requirements for anchorage efficiency are relatively high. [0003] The supporting anchor is passive anchoring, which needs to be tightened and locked by the nut on the prestressed screw (or prestressed steel rod) after tension to achieve the effect of prestressing. Whether the nut is tightened or not depends on the prestressed screw (or prestressed steel bar) is an important factor affecting the long-term effectiveness of prestressing. At present, the tightening and...
Claims
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Inventor 侯建青胡祖光吕玉堃张德锋肖慧
Owner SHANGHAI CONSTRUCTION GROUP