Seat-type sensor for measuring force withstood by cantilever support member
A force sensor and support technology, which is applied in the field of seat-type sensors for measuring the force of cantilever supports, can solve the problems of poor controllability of precision, low output sensitivity, too many strain gauges, etc.
Inactive Publication Date: 2016-12-07
BEIJING BRANCH JIKE DEV SCI & TECH
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[0004] In view of this, the present invention provides a sensor for detecting the axial force and moment of the cantilever support, which can not only overcome the excessive use of strain gauges, low output sensitivity, relatively high dependence on the environment, and poor precision controllability, etc. Problems can also effectively shorten the construction period and prolong the service life
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[0007] figure 1 Among them, the installation position of the sensor is at the root of the cantilever support. For the root of the cantilever support, the load bending moment is the largest, and the bending moment at the root is the easiest to detect. Therefore, the sensor is installed at the root of the cantilever support with a seat structure. The upper flange surface of the sensor It is connected with the cantilever support, and the lower end flange surface is connected to the foundation. In this embodiment, it is connected through the base, that is, the lower end flange surface of the sensor is connected to the upper mounting surface of the base, and then the base and the foundation are fixed. The advantage of this is that, The upper surface of the base can be processed flat to avoid the additional stress of the sensor due to fixation and affect the detection. The top of the cantilever support is a spherical seat. When loading, the end of the cantilever support will inevitab...
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The invention provides a measurement method for measuring a force withstood by a cantilever support member and a seat-type sensor for measuring the force withstood by the cantilever support member, wherein the sensor is disposed at the root of the cantilever support member. The method comprises the steps: distributing four groups of strain gages on a wall surface of a cylindrical housing; calculating the sum of four groups of measurement data, and obtaining a measurement value of an axial force; calculating the difference between the measurement data of two opposite strain gages, and obtaining the measurement values of two component force moments; calculating the vector sum of the two component force moments, and obtaining a force moment and the direction of the force moment; obtaining the size of a lateral cutting force according to the lengths of force arms. The sensor comprises the cylindrical housing comprising a flange joint surface, the strain gages, and a measurement circuit. The strain gages are pasted on the wall surface of the cylindrical housing, and the flange joint surface is used for fixing the cylindrical housing, and the connection with the cantilever support member. According to the invention, the function of force measurement and the function of force moment measurement are integrated in one sensor.
Description
technical field [0001] The invention relates to a method for measuring the force of a cantilever support and a sensor thereof, which are used for measuring the force and moment of the cantilever support. Background technique [0002] When the end of the cantilever support bears the lateral force, the length direction of the cantilever will be affected by the bending moment to varying degrees, and any link in between may be damaged due to the weak structure. The moment and then limiting the lateral force can avoid structural failure. In the application of curved surface support, the support force at the top of the pillar acts on the supported surface, and its force direction is in the normal direction of the curved surface. The moment is different, and its connection includes the connection with the foundation, the transmission and guide for adjusting the height of the support, etc. All links will suffer different bending moments due to different loads and different adjustmen...
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IPC IPC(8): G01L5/16
CPCG01L5/161
Inventor 刘明利周晓欢刘菁昊温煜胡永立李志强
Owner BEIJING BRANCH JIKE DEV SCI & TECH