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Bridge prestress tensioning device

A tensioning device and prestressing technology, applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of slow oil pressure heating, large power consumption, and reduced measurement efficiency, so as to increase temperature and save volume and energy, the effect of maintaining normal measurements

Active Publication Date: 2019-01-15
浙江瓯越交建科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The prestressed tensioning device is mainly used in conjunction with the jack used for tensioning and the electric oil pump used for tensioning. The prestressing value is given by increasing the strength of the steel strand or steel bar in the anchorage through work, and the prestressing force is generated by tensioning the equipment. The relevant values ​​provide the required data for the construction of the bridge, and in cold environments, the oil pressure used by the oil pump will change due to the temperature difference, which will affect the result of measuring the prestress. The temperature method is used to heat the oil pressure device to keep the oil pressure under normal conditions, but the external heating used is too slow for the internal oil pressure heating and requires a lot of power consumption, resulting in waste of energy and reduced measurement efficiency

Method used

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Embodiment

[0022] see Figure 1-Figure 4, the present invention provides a bridge prestressed tensioning device, a bridge prestressed tensioning device, the structure of which includes a fixed bolt 1, a heating control oil pressure box 2, a restraint ring 3, a fixed anchor plate 4, an extrusion sleeve 5, a steel strand 6. Propeller outlet pipe 7, spiral rib 8, acting oil pressure pipe 9, the fixing bolt 1 is connected together with the heating control oil pressure box 2 through threads, and the heating control oil pressure box 2 is connected together through the action The oil pressure pipe 9 and the acting oil pressure pipe 9 are excessively connected together, one side of the constraint ring 3 is welded to one end of the acting oil pressure pipe 9, and one end of the extrusion sleeve 5 is fixed to the The anchor plate 4 is connected, one end of the steel strand 6 is excessively connected with the extrusion sleeve 5 through the fixed anchor plate 4, the spiral rib 8 is connected with th...

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PUM

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Abstract

The invention discloses a bridge prestress tensioning device. The structure comprises fixing bolts, a heating control oil pressure box, a restraint ring, an anchor plate, an extrusion sleeve, a stranded wire, a slurry discharge tube, a spiral rib, and an acting hydraulic pipe. Compared with the prior art, the invention adopts the control for the micro braking device, which can change the temperature change of the electric heating tube through a series of mechanical transmissions; the transmission structure and the sliding mechanism are driven by the magnetic swing mechanism for the actual change of the external environment, so as to be able to act on the electric heating device by the conductive mechanism. The invention can quickly and accurately raise the temperature of the heating pipe,heat the oil pressure, make the internal oil pressure not affected by the external environment, keep the normal measurement, and need not use the external heating, greatly save the use volume and energy, and accelerate the heating speed and improve the measurement rate.

Description

technical field [0001] The invention relates to the technical field of civil construction equipment, in particular to a bridge prestress tensioning device. Background technique [0002] The prestressed tensioning device is mainly used in conjunction with the jack used for tensioning and the electric oil pump used for tensioning. The prestressing value is given by increasing the strength of the steel strand or steel bar in the anchorage through work, and the prestressing force is generated by the tensioning of the equipment. The relevant values ​​provide the required data for the construction of the bridge, and in cold environments, the oil pressure used by the oil pump will change due to the temperature difference, which will affect the result of measuring the prestress. The temperature method is used to heat the oil pressure device to keep the oil pressure under normal conditions, but the external heating used is too slow for the internal oil pressure heating and requires a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 蒙建敏
Owner 浙江瓯越交建科技股份有限公司