Baffle box for positioning of earth pressure measuring instrument in hole, positioning device and positioning method
A technology of positioning device and baffle box, which is applied in the direction of measuring device, force/torque/work measuring instrument, force sensor in the hole of force-bearing structure, etc. Problems such as included angles
Active Publication Date: 2021-07-23
HOHAI UNIV
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Problems solved by technology
When the safety monitoring work is carried out, when the earth pressure gauge is used to measure the earth pressure in the vertical direction at a deeper level, it will face the problem of not being able to ensure the correct posture of the pressure gauge
In particular, it is difficult to ensure that the earth pressure cell is in a horizontal state. When the instrument is lowered to the observation depth, under the joint action of its own gravity and the extrusion of the filling soil in the hole, an included angle is likely to be formed between the sensing surface of the instrument and the direction of the force, resulting in Errors in the readings may cause misjudgment of the impact on construction in some occasions and cause engineering accidents
Method used
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[0040] The technical scheme of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.
[0041] The baffle box used for positioning the earth pressure measuring instrument in the hole is used to fix and protect the earth pressure gauge. The internal structure diagram is as follows figure 1 , as shown, including the top cover 7 of the baffle box, the bottom cover 8 and the fixing ring 4, the main functions of each component are as follows:
[0042] The baffle box top cover 7 is provided with a top cover frame 10 of non-magnetic material and the baffle box top cover 7 cover is a non-magnetic metal cover, and the upper surface of the non-magnetic metal cover is provided with a The cable fixing buckle 1 of the pressure gauge cable and the...
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The invention discloses a baffle box for positioning an earth pressure measuring instrument in a hole, a positioning device and a positioning method. The frame of the top cover and the top cover of the baffle box is a non-magnetic metal cover, the upper surface of the non-magnetic metal cover is provided with a cable fixing buckle for fixing the earth pressure gauge cable and the non-magnetic metal cover is arranged There is a fixing hole for placing the electromagnet; the fixing ring is used for placing the earth pressure gauge and the fixing ring is provided with a connection assembly for connecting the top cover of the baffle box; the bottom cover is provided with a bottom cover frame made of non-magnetic material , the bottom surface of the bottom cover is provided with several pointed pins of non-magnetic material; the fixed ring and the bottom cover are respectively provided with iron blocks corresponding to the electromagnet. The invention solves the problems of fixed horizontal posture and leveling of the hole bottom, and is suitable for installation and positioning of box-shaped, rod-shaped and bar-shaped earth pressure sensors.
Description
technical field [0001] The invention relates to a baffle box for positioning an earth pressure measuring instrument in a hole, a positioning device and a positioning method. Background technique [0002] At present, the measurement of earth pressure adopts the appearance design of round box, rod or rod-shaped sensor. The cable is connected to the side of the box or the top of the rod. It responds to the deformation of the box or rod, converts the deformation value into a corresponding signal (such as resistance, frequency, voltage, etc.), and then transmits it to the acquisition terminal through the cable. When the safety monitoring work is carried out, when the earth pressure gauge is used to measure the earth pressure in the vertical direction at a deeper level, it will face the problem of not being able to ensure the correct posture of the pressure gauge. In particular, it is difficult to ensure that the earth pressure cell is in a horizontal state. When the instrument i...
Claims
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IPC IPC(8): G01L5/00
CPCG01L5/0004
Inventor 陈松赵勋蒋甫玉李筱艳
Owner HOHAI UNIV