Miter gate back drag rod prestress adjusting method and device

Abstract

Provided is a miter gate back drag rod prestress adjusting method and device. The device comprises a jacking cross beam, wherein a screw at the end of a back drag rod is sleeved with the jacking cross beam, a tool nut is arranged on the screw, a back drag rod nut is arranged at the screw section between the jacking cross beam and a back drag rod support, a stress application device is further arranged between the jacking cross beam and the back drag rod support and is composed of two jacks, and the jacks are respectively connected with a hydraulic pump source. The adjusting method comprises the steps of adding the stress application device, measuring pull force and stress of the back drag rod, adjusting prestress and the like. By means of the miter gate back drag rod prestress adjusting method and device, the defect that the back drag rod is completely loosened to determine a zero value, then the prestress of the back drag rod is adjusted to be a required value and accordingly a construction period is long when miter gate back drag rod prestress adjustment is performed in the prior art is overcome, the prestress of the back drag rod is not required to be loosened to be the zero value during measurement, adjustment is directly performed based on original prestress, and the construction period is shortened and operation is simplified while the adjusting effect is ensured.

Description

technical field [0001] The invention belongs to the technical field of adjusting a back tie rod of a miter gate of a ship lock, in particular to a method and a device for adjusting the prestress of a back tie rod of a miter gate. Background technique [0002] The miter gate is a kind of working gate that is widely used in ship locks. Generally, a prestressed back tie rod is installed on the back of the gate to increase the torsional rigidity of the gate body. The size of the prestress should be within the range specified in the design. At present, the known booster device for adjusting the back tie rod of the miter gate is mainly applied by manpower. The stress monitoring of the back tie rod in the process of adding force needs to use a separate stress monitoring system. The adjustment process of the back tie rod of the miter gate is complicated and labor-intensive. Large and long construction period. Contents of the invention [0003] In order to solve the problems in th...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems in the known technology of the prestress adjustment process of the back tie rod of the miter gate, such as complex procedure, high labor intensity, and long construction period, the present invention provides a method for directly adjusting on the basis of the original prestress without loosening the back tie rod to determine the zero value. method and adjustment device

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