Testing device and method for measuring binding power of bolt and ice

A test device and bonding force technology, applied in the direction of measuring devices, mechanical devices, instruments, etc., can solve the problems of poor accuracy of the test results of the bonding force between ice and bolts, and achieve accurate and reliable test results, strong practicability, temperature Control precise effects

Pending Publication Date: 2020-02-11
HEILONGJIANG PROVINCIAL HYDRAULIC RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of poor accuracy of ice and bolt adhesion test results in existing test devices

Method used

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  • Testing device and method for measuring binding power of bolt and ice
  • Testing device and method for measuring binding power of bolt and ice
  • Testing device and method for measuring binding power of bolt and ice

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0030] Specific implementation mode one: combine figure 1 Describe this embodiment, a kind of test device for measuring the cohesive force between bolt and ice of this embodiment, it comprises screw rod 1, nut 2, top cover 3, upper cylinder 4, partition plate 5, lower cylinder 6 and connecting pin 7, upper The cylinder 4 and the lower cylinder 6 are connected by a partition 5, and the upper cylinder 4 and the lower cylinder 6 are sealed and fixedly connected with the partition 5, the top cover 3 is installed on the upper cylinder 4, and the screw 1 is vertically installed on the The top cover 3 extends in the upper cylinder 4 , the screw 1 is screwed on the upper and lower ends of the top cover 3 through the nut 2 , and the connecting pin 7 is horizontally installed on the lower cylinder 6 .

[0031] Because water will expand with cold and shrink with heat during the freezing process, therefore, the upper cylinder 4 is made of Q235 steel.

[0032] In the present invention, th...

specific Embodiment approach 2

[0034] Specific implementation mode two: combination figure 1 To describe this embodiment, the center position of the top cover 3 of this embodiment is provided with a threaded through hole 3-1. With such a design, the screw rod 1 can pass through the top cover 3, and the measured length of the screw rod in water can be adjusted through the nut 2. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0035] Specific implementation mode three: combination figure 1 To describe this embodiment, an arc-shaped groove 1-2 is provided on the lower end surface of the top cover 3 of this embodiment. With such a design, it can be aligned with the center of the upper cylinder, ensuring that the screw is at the center of the ice during the freezing process, and the test results are more accurate and reliable; other components and connections are the same as those in the first or second embodiment.

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Abstract

The invention discloses a testing device and method for measuring the binding power of a bolt and ice, and relates to a binding power testing device and method. The invention aims to solve the problemof poor accuracy of an ice and bolt bonding force test result of an existing test device. An upper cylinder and a lower cylinder are connected by a partition plate, a top cover covers the upper cylinder, a screw vertically penetrates the top cover and extends into the upper cylinder, the screw is screwed at the upper end and the lower end of the top cover through nuts, and a connecting pin horizontally penetrates the lower cylinder. Water is added into the upper cylinder, the lower end of the screw rod is immersed into water, freezing is performed after he measured length is adjusted, after freezing, the nut is unscrewed, the top cover is taken off, a mold is placed in a low-temperature test box, the hole of the lower cylinder is connected with the hole of the base of the low-temperaturetest box through a connecting pin, the temperature of the low-temperature test box is adjusted to a measured temperature, and tensile force is applied to the measured screw two hours later, so that the obtained ice shear bonding force between ice and the measured screw is more accurate. The testing device and the method for measuring the binding power of the bolt and the ice are used for measuringthe binding power of the ice and the bolt.

Description

technical field [0001] The invention relates to a cohesion test device and method, in particular to a test device and method for measuring the cohesion between bolts and ice, and belongs to the technical field of freezing damage prevention and control of hydraulic structures in cold regions. Background technique [0002] The fixing bolts of wading buildings in severe cold areas freeze together with the ice in winter, and the displacement occurs with the deformation of the ice, and damage occurs in severe cases. Accurately testing the adhesion between ice and bolts is not only the basis and premise for optimizing the anti-freezing design of bolts, but also an urgent problem to be solved in the prevention and control of freezing damage of hydraulic structures in cold regions. [0003] The current test is mainly to freeze the bolts in the ice through the container, and use the test device to measure the adhesion between the bolts and the ice through the pull-out test. However,...

Claims

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Application Information

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IPC IPC(8): G01N19/04
CPCG01N19/04
Inventor 苏安双徐丽丽王远明郑健李兆宇王宇张家阳吴志琴钟华刘丽佳
Owner HEILONGJIANG PROVINCIAL HYDRAULIC RES INST
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