Apparatus and method of monitoring unidirectional force by means of liquid mixing color changing

Abstract

The invention discloses an apparatus and method of monitoring unidirectional force by means of liquid mixing color changing. The apparatus of monitoring unidirectional force by means of liquid mixing color changing includes a bearing mechanism, a hydraulic control valve bank and a display mechanism, wherein the bearing mechanism is arranged at the outside of an anchor pole to be measured or a bolt to be measured; the bearing mechanism includes a cylindrical bearing body and a pressure cavity; the display mechanism is a color displaying cavity; the color displaying cavity is arranged in an annular groove at the outside of the bearing body; the hydraulic control valve bank includes a pressure-reducing valve and a non return valve; and the pressure cavity, the hydraulic control valve bank and the color displaying cavity are correspondingly connected one-to-one. The method of monitoring unidirectional force by means of liquid mixing color changing includes the steps: the bearing mechanism converts the axial force of the anchor pole as hydraulic pressure; and the colored liquid reaches the hydraulic control valve through an oil way in the apparatus after being pressurized; and opening or closing of the valve can be controlled in the corresponding pressure, so that injection and discharge of the liquid in the color displaying cavity can be controlled correspondingly and the color of the liquid in the color displaying cavity can be observed to determine the stress condition of the anchor pole. The apparatus and method of monitoring unidirectional force by means of liquid mixing color changing utilize the sensor to perform mass distribution monitoring for the whole anchoring engineering, and do not need maintenance and management, and do not need special people to perform point inspection, thus having great significance.

Description

technical field [0001] The invention relates to a device and method for monitoring one-way force by using liquid mixing and discoloration, and belongs to the field of sensing technology. Background technique [0002] There are many occasions in engineering that need to monitor or display unidirectional force, such as bolt fastening force in important occasions, anchor rod or anchor cable axial force in geotechnical engineering. It is very important to be able to display these forces timely and accurately for the safety of engineering facilities. There are two types of traditional unidirectional force monitoring devices. One uses a power source, such as a strain gauge type, which uses the strain of the anchor rod to detect the stress of the anchor rod. However, due to the need for a power source, the safety management is complicated. The other type does not require a power source, such as the hydraulic type. The hydraulic force measuring device is shock-resistant, impact-res...

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Problems solved by technology

[0004] Chinese patent ZL94240039.9 discloses a one-way force measuring device that converts force into pressure through a bearing mechanism and reads it from a pressure gauge, and then converts it to obtain the tension of the anchor rod. This type of device can read intuitively, but cannot be monitored remotely.

Chinese patent CN201610004373.5 discloses a unidirectional force monitoring device composed of a hydraulic load equalizing mechanism and a display device. Eccentric load, the display device can convert the uniform pressure transmitted by the hydraulic load equalizing mechanism into color output, different forces correspond to different colors, and the one-way force can be judged by observing the different colors of the display device, but the structure of the device is complex and difficult to manufacture

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