35results about How to "Increase radius of gyration" patented technology

A method and device for testing the magnetized viscosity of a magnetic liquid, using a permanent magnetic ring as a magnetic source, the confinement magnetic field is continuously adjustable from weak to strong, and is formed by a permanent magnetic ring surrounded by an inner magnetically conductive stator, an outer magnetically conductive stator, and a magnetically conductive rotor The cavity moves up and down, so that two radially adjustable gaps are formed between the upper pole shoe ring, the magnetically permeable rotor and the inner magnetically permeable stator, forming a magnetizing circuit and a magnetic flux leakage circuit, and then adjusting the force applied to the magnetic liquid material. Magnetic field strength, after starting the speed regulating motor, the magnetic liquid material is sheared through the rotation of the magnetically conductive rotor, and the viscosity characteristic is converted into shear force and measured by the torque testing device in the form of torque M; the magnetic flux is measured by the magnetic flux measuring device, and finally press The formula calculates the magnetization viscosity and flux density. The weak magnetic field of the present invention can be adjusted to a level close to zero, and the rotor that shears the magnetic liquid has a small inertia, a large radius of gyration, and is easy to adjust, and is more suitable for the viscosity-temperature curve of the magnetic liquid under low temperature and weak magnetic field and Measurement of magnetic viscosity curve.

The invention provides a position and attitude detection device and a position and attitude detection method for an omnidirectional mobile platform, including an omnidirectional wheel, a transmission shaft, an encoder, a bearing, a coupling, an omnidirectional wheel seat, a connecting rod, a pin shaft, and a steering rod , top plate, lead screw, linear guide, slider, hand grip, stepper motor, main control board, steering rod, connecting rod and omnidirectional wheel seat form a two-degree-of-freedom suspension system, and the omnidirectional wheel seat can wrap around the connecting rod Free rotation, the connection between the connecting rod and the omnidirectional wheel seat is a tight fit, the connecting rod is equipped with a bearing, the connecting rod can freely rotate around the steering rod, and the connection between the connecting rod and the steering rod is a tight fit, ensuring that the connecting rod and the steering rod have no shaft There is a bearing in the connecting rod to ensure the relative smooth sliding of the connecting rod and the omnidirectional wheel base. When the uneven ground causes the support reference plane of the mobile platform to be inconsistent with the support reference plane of the omnidirectional wheel of the pose detection device , Through the adjustment of the two-degree-of-freedom suspension mechanism, the full and non-slip contact between the omnidirectional wheel and the ground can be ensured.

The invention provides a ballast cleaning machine, which comprises a ballast cleaning machine body, wherein a rotating and conveying mechanism as well as a tensioning and elevating mechanism are arranged on the ballast cleaning machine body; the tensioning and elevating mechanism is used for tensioning and elevating the rotating and conveying; one end of the tensioning and elevating mechanism is connected with the ballast cleaning machine body; and the other end of the tensioning and elevating mechanism is connected with the rotating and conveying. The ballast cleaning machine provided by the invention has the advantages as follows: through the adoption of the tensioning and elevating mechanism, the lengthened rotating and conveying mechanism can obtain stability during rotating and unloading contaminated soil, so that the rotation radius of the rotating and conveying mechanism can be increased by using a method for lengthening the rotating and conveying mechanism so as to increase the throwing distance and throwing range of the contaminated soil and increase the discharging efficiency of the contaminated soil.