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283 results about "Force gauge" patented technology

A force gauge (also force meter) is a measuring instrument used to measure forces. Applications exist in research and development, laboratory, quality, production and field environment. There are two kinds of force gauges today: mechanical and digital force gauges. Force Gauges usually measure pressure in stress increments and other dependent human factors.

Comprehensive monitoring system for side slope and landslip

A comprehensive monitoring system for a side slope and a landslip is capable of comprehensively monitoring surface displacement and depth displacement of a slope body, soil pressure of a retaining structure, and internal force of an anchoring structure, and realizing high-efficient acquisition and automation treatment of data. The comprehensive monitoring system for the side slope and the landslip comprises a side slope surface displacement monitoring unit, a side slope supporting structure stress monitoring unit, a side slope interior deformation monitoring unit and a data acquisition and transmission device, wherein the side slope surface displacement monitoring unit is arranged on a side slope surface and adopts a stay cord type fiber bragg grating displacement sensor; and two ends of the side slope surface displacement monitoring unit are respectively fixed on the side slope surface and the top of a slope body retaining structure; the side slope supporting structure stress monitoring unit consists of fiber bragg grating pressure boxes vertically embedded on the back of the slope body retaining structure at intervals, and a fiber bragg grating force gauge arranged on a slope body anchoring component; the side slope interior deformation monitoring unit is a fiber bragg grating intelligent anchoring rod embedded in the slope body by drilling a hole; and the data acquisition and transmission device consists of a multi-channel wavelength demodulator and a monitoring computer.
Owner:CHINA RAILWAY ERYUAN ENG GRP CO LTD +1

Test method for determining uniaxial tensile strength of soil mass

The present invention discloses a test method for determining uniaxial tensile strength of soil mass. According to the method, test equipment comprising a sample preparation system, a tension system and a data acquisition system is adopted, wherein the sample preparation system comprises a fixation base, a pressing plate, a sample forming device and a fixation screw, the tension system comprises a three-speed electric scissors instrument and a sample clamper, and the data acquisition system comprises a digital display push-pull force gauge, a dial indicator and a computer. According to the method, the one-time static pressure molding technology is adopted to prepare the sample, such that the weak surface caused by layering compaction sample preparation can be avoided; the sample presents the dumbbell shape, and both ends are adopted as the fixation end, such that the operation is simple, and the connection is firm; the fixation end of the sample and the middle part of the sample are connected through the transition section, such that the influence of stress concentration due to sudden diameter change on the test is avoided; and the digital display push-pull force gauge is connected with the computer, such that the pull force can be real-timely recorded, and the maximum pull force value during sample breaking can be accurately recorded.
Owner:NORTHWEST A & F UNIV

Multi-functional electromagnetic combined fitness equipment

InactiveCN102397664ARally displayThe size of the pulling force is displayedMuscle exercising devicesMicrocontrollerMagnetic tension force
The invention provides a multi-functional electromagnetic combined training stand. The multi-functional electromagnetic combined training stand mainly comprises a main shell, an electromagnet, a singlechip, chest-expanding arms, a rotating shaft, a steel wire, a universal wheel, a small rotating wheel, a supporting frame, a fixed ring, lantern rings, a force gauge, a frequency gauge, a training bench, a base frame, a permanent magnet, a base and the like. The multi-functional electromagnetic combined training stand is characterized in that: the gravity of an iron block which is required to be used is replaced by the magnetic force of the magnet, the electromagnet is fixed at the upper end of the main shell, and the permanent magnet is arranged at the lower end of the main shell. The electromagnet is controlled by the singlechip and can produce large magnetic force when being electrified; and the magnitude of current can be adjusted by using the singlechip, the magnitude of tension can be adjusted so as to save the trouble of adding heavy objects, and the effect of stepless tension regulation can also be achieved. In addition, the force gauge and the frequency gauge are also fixed at both ends of the training bench, and a user can read the force applied by arms during training through the force gauge and read the times of the training through the frequency gauge so as to fulfill the aim of higher humanization. The invention has the advantages that: the multi-functional electromagnetic combined training stand can perform stepless tension regulation, is designed in a more reasonable and humanized way, has high applicability, and is very convenient to use.
Owner:HENAN POLYTECHNIC UNIV

Resistance measuring device and method for measuring wind resistance factor of non-smooth surface object

The invention discloses a resistance measuring device and method for measuring the wind resistance factor of a non-smooth surface object. The device comprises a dynamometer connecting shaft, a wind inlet section, a wind meter, a fan, a test observation section and a flow guide wind grid arranged between the wind inlet section and the test observation section; the test observation section is provided with two guide rails; the dynamometer connecting shaft penetrates through the wind inlet section and the test observation section; during the test, the non-smooth surface object is placed on the dual guide rails firstly, and one end of a stay wire is tied and suspended on a hook of the dynamometer connecting shaft; then the fan is electrified to suck external air, the air is shunted by the flow guide wind grid and is exhausted after passing by the non-smooth surface object; meanwhile, the non-smooth surface object moves on the dual guide rails along the horizontal direction, when the dynamometer connecting shaft horizontally moves as the non-smooth surface object is subjected to the resistance of the air flow, the dynamometer connecting shaft can pulls a digital dynamometer to test the magnitude of the wind resistance applied to the non-smooth surface object. The resistance measuring device is simple in structure, the test means is simple, convenient and fast and the errors are smaller.
Owner:SOUTH CHINA UNIV OF TECH

On-machine calibration method for grinding dynamometer and horizontal force loader

The invention discloses an on-machine calibration method for a grinding dynamometer and a horizontal force loader, and belongs to the technical field of sensing test. In the method, the grinding dynamometer is connected with a charge amplifier, a data acquisition card and an industrial personal computer in turn to form a measurement and control system. After the grinding dynamometer is arranged on a grinding machine, a standard load is applied to the grinding dynamometer, the grinding dynamometer is subjected to normalized regulation, and the normalized sensitivity of the grinding dynamometer in each direction is determined; and after the monitoring software installed in the industrial personal computer process the data, a 'force value-indicating value' on-machine calibration curve of the grinding dynamometer is established, and then each performance index is solved. Two horizontal force loaders with totally same structures and the standard dynamometer are adopted in the on-machine calibration method to measure an axial force Fz, a radial force Fr and a tangential force Ft generated when a silicon wafer is ground; and each horizontal force loader consists of a mobile sleeve, a lifting screw, an end connecting plate, a screw, a connecting shaft, a speed reducer, a horizontal guide sleeve and the like. The method is simple and convenient, has low interference, and can achieve good measurement performance.
Owner:DALIAN UNIV OF TECH
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