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743results about "Force sensors" patented technology

Detection device for polyethylene ball valve

The invention discloses a detection device for a polyethylene ball valve and relates to the technical field of valve detection. The device at least comprises a base, a torque sensor and a motor, wherein the base comprises an upper bottom plate and a lower bottom plate; the torque sensor is disposed between the upper bottom plate and the lower bottom plate; the central axis of the torque sensor islongitudinal, the lower end of the torque sensor is driven to rotate by the motor and a valve rod connecting block is fixed at the upper end of the torque sensor; the top part of the valve rod connecting block is provided with a strip groove which can be engaged with the valve rod of a ball valve; the upper surface of the upper bottom plate is provided with a ball valve positioning mechanism whichcomprises a left positioning seat and a right positioning seat; the left positioning seat is provided with a left positioning bayonet for positioning a left connection pipe of ball valve and the right positioning seat is provided with a right positioning bayonet for positioning a right connection pipe of the ball valve. In order to solve a problem of low accuracy of direct detection of the polyethylene ball valve with a torque wrench directly in the prior art, the invention provides the polyethylene ball valve detection device with high accuracy and convenient operation.
Owner:长沙星沙新奥燃气有限公司

Self-power supply and wireless data transmission-based mechanical seal face friction torque measurement device

The invention provides a self-power supply and wireless data transmission-based mechanical seal face friction torque measurement device which can be used for realizing accurate measurement of torques of mechanical seals to be measured in mechanical seal performance test devices. The self-power supply and wireless data transmission-based mechanical seal face friction torque measurement device comprises a shaft sleeve, a transmission pin, a force sensor, a signal processor, a wireless transmission module, a wireless reception module and a self-power supply module, wherein a main shaft passes through the shaft sleeve; the sleeve shaft is sleeved by a mechanical seal of the face friction torque to be measured; a movable ring is connected with the shaft sleeve; a fixed ring is fixed on a seal cavity; the torque generated by face friction between the movable ring and the fixed ring of the mechanical seal is balanced with the torque transmitted to the shaft sleeve by the transmission pin through the main shaft; the torque is decided by the product of a peripheral force measured by the force sensor adhered on the transmission shaft and a force arm at a force measurement point; the measured peripheral force is processed by the signal processor and transmitted to the wireless reception module by the wireless transmission module; by utilizing the electric energy generated by rotation of the main shaft or the shaft sleeve, power can be supplied to the signal processor and the wireless transmission module through the self-power supply device.
Owner:NANJING FORESTRY UNIV

Eccentricity adjustable sliding bearing test device

The invention discloses an eccentricity adjustable sliding bearing test device, which is suitable for a half-bush and full-bush sliding bearing bush test. A driving motor is fixedly connected to a main shaft, and is connected to a test sliding bearing bush at the end of the main shaft; and the sliding bearing test under different eccentric conditions is simulated by accurately monitoring and quantitatively adjusting the position of the test bearing bush in the horizontal and vertical directions, so that each performance indicator of a high-speed and heavy load sliding bearing under different eccentric conditions is output. An end cap flange of the end of the bearing bush of the sliding bearing test device is provided with horizontal and vertical displacement sensors for monitoring the eccentricity of the bearing bush and the shaft neck. A plurality of pressure sensors and temperature sensors are arranged at different positions on the side of the test bearing bush for measuring the oilfilm pressure and the oil film temperature at different positions under the same eccentric amount. A loading device is located on the side of the test bearing bush for applying different external loads, so as to monitor the sliding bearing test under different loads. The eccentricity adjustable sliding bearing test device has a simple structure, convenient assembly and disassembly, and high measurement precision.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Six-freedom tactile sensor and decoupling designing method thereof

The invention discloses a six-freedom tactile sensor and a decoupling designing method thereof. The tactile sensor is based on a capacitance conduction principle and is composed of a shearing force sensing unit, a torsion sensing unit and a positive pressure array sensing unit. The six-freedom tactile sensor can simultaneously sense abundant multidimensional information such as shearing, spatial load and torque. According to the six-freedom tactile sensor, intersected axis sensitivity is used as a standard for measuring the decoupling precision for guiding sensor structure designing; decomposition of each dimension force/torque information to three independent sensing unit is ingeniously realized, thereby reducing decoupling difficulty and improving decoupling precision, and independentlyrepresenting a six-freedom force/torque component. Simultaneously, through constructing a double-interdigital-electrode structure and a lose grid-shaped dielectric structure, ultrahigh-sensitivity measurement of the sensor is realized. The six-freedom tactile sensor and the decoupling designing method have advantages of reducing coupling degree and decoupling difficulty in multidimensional measurement of the sensor, remarkably improving decoupling efficiency and realizing decoupling characterization of a six-dimensional force/torque.
Owner:BEIHANG UNIV
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