Profile subsidence instrument
A technology of sedimentation meter and profile, which is applied in the field of profile sedimentation meter, can solve the problems of cable straightening, expensive cable, and increased man-hour cost, and achieve the effects of small quality and volume, avoiding measurement errors, and improving accuracy
Inactive Publication Date: 2015-09-09
SHIJIAZHUANG TIEDAO UNIV
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Problems solved by technology
①Accuracy: The inclinometers that are more commonly used now may produce the following errors during use: i) Observation errors: It is easier to artificially align the cable with the reference point of the nozzle and tighten it for each observation. There are human errors; ii) errors caused by changes in the length of the cable: the cable of the inclinometer is under long-term load, and the length will change, which is equivalent to the change of the actual probe position, and the nearby measured value is mistaken for the intended measurement iii) Errors caused by temperature changes: In cold regions, when the temperature is low, the cable cannot be fully straightened, resulting in distortion of the measured value
②Cost problem: The cables of the inclinometers that are more commonly used now are more expensive; at the same time, the artificial forward and reverse adjustment and testing reduce the work efficiency and increase the cost of working hours
Method used
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Embodiment Construction
[0017] like figure 1 As shown, a profile subsidence instrument includes a pulley frame, an accelerometer assembly, a steel pipe casing, a metal pull rope 2 and a data acquisition device 3 . The pulley frame includes two pulley blocks, each pulley block includes two pulleys 4 and a pulley connecting rod 9, the two pulleys 4 are connected by a pulley connecting rod 9, and the pulley connecting rod 9 is connected with the steel pipe shell 6 shafts; During use, the profile settlement instrument is located in the profile settling tube 1, the upper and lower inner walls of the profile settling tube 1 are provided with guide grooves 5, and the pulley 4 on the pulley block is always connected with the guide grooves on the upper and lower inner walls of the profile settling tube 1. 5 is sliding fit, and the pulley cannot break away from the guide groove 5, which improves the measurement accuracy.
[0018] The accelerometer assembly includes an accelerometer 7 and a probe axis 8. Prefe...
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The invention discloses a section settlement instrument and relates to the technical field of measurement devices for foundations or foundation structures. An accelerator assembly is fixed in a steel pipe shell and comprises an accelerator and a probe center shaft; the accelerator and the probe center shaft are positioned in the steel pipe shell, and the accelerator is fixed in the middle of the steel pipe shell; the probe center shaft is fixedly connected with the accelerator; a data acquisition device is fixed in one end of the steel pipe shell; the accelerator is connected with the signal input end of the data acquisition device; metal pull ropes are fixed at two ends of the steel pipe shell; one of the metal pull ropes is connected with the signal output end of the data acquisition device. The settlement instrument disclosed by the invention has the characteristics of high measurement accuracy, high working efficiency, long service life and the like.
Description
technical field [0001] The invention relates to the technical field of measuring devices for foundations or basic structures, in particular to a profile settlement instrument. Background technique [0002] The profile settlement instrument is an in-situ test instrument for measuring the vertical settlement of the profile pipe. This instrument is developed from the inclinometer mainly used to test the horizontal displacement in the early stage, and now it has developed into a comprehensive instrument that can simultaneously test the vertical and horizontal deformation Slope inclinometer. The inclinometer consists of a probe, a cable, and a data acquisition instrument (reader). The sensor types of the probe include servo accelerometer type, resistance strain gauge type, steel string type, differential resistance type, etc., and the servo accelerometer type is currently used more. Domestically, there are CX series produced by the Ministry of Aeronautics and Space, while abroa...
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IPC IPC(8): G01C5/00G01C9/00
CPCG01C5/00G01C9/00
Inventor 孙铁成马超岳祖润邰博文宋宏芳王天亮叶朝良
Owner SHIJIAZHUANG TIEDAO UNIV