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107 results about "Mobile joint" patented technology

Constant-speed universal joint driving shaft assembly

The invention discloses a constant-speed universal joint driving shaft assembly and belongs to the automotive engineering technical field. The constant-speed universal joint driving shaft assembly comprises a fixed ball cage universal joint, a mobile ball cage universal joint and an intermediate shaft; two ends of the intermediate shaft are connected with the fixed ball cage universal joint and the mobile ball cage universal joint respectively; the bottom of an inner chamber of the fixed ball cage universal joint is provided with a cylindrical groove and the bottom of an inner chamber of the mobile ball cage universal joint is provided with a cylindrical groove; a first pressure spring is arranged in the fixed ball cage universal joint; the first pressure spring is arranged along the axial direction of the intermediate shaft and is arranged between the fixed ball cage universal joint and one end of the intermediate shaft in an abutting mode; a second pressure spring is arranged in the mobile ball cage universal joint; the second pressure spring is arranged along the axial direction of the intermediate shaft and is arranged between the mobile ball cage universal joint and the other end of the intermediate shaft in an abutting mode. According to the constant-speed universal joint driving shaft assembly, the first pressure spring abuts against the fixed joint and the intermediate shaft, the second pressure spring abuts against the mobile joint and the intermediate shaft, and accordingly an axial gap formed in the constant-speed universal joint driving shaft assembly is fully offset and the uniformity and the stability of the automotive power transfer are enhanced.
Owner:CHERY AUTOMOBILE CO LTD

Zero position calibration method and device for mechanical arm joint sensor

The invention discloses a zero position calibration method and device for a mechanical arm joint sensor. The method comprises determining whether a mechanical arm to be tested is a redundant mechanical arm, if so, performing mechanical arm segmentation and using a non-redundant boom as a set end arm, and performing the steps of the following single calibration method until zero calibration of allthe joints of the mechanical arm to be tested is completed; mounting at least two targets in parallel on the set end boom and keeping matching elements of patterns of the targets in parallel; mountinga light source on a mechanical arm mounting body; driving movement of the joints of the mechanical arm to make a beam of the light source pass through the axis of each target with the spot overlappedwith the pattern of each target; obtaining the posture of each target after the boom posture is adjusted and calculating the rotating angle of the rotating joints of the mechanical arm and the movingamount of the moving joints under the current posture of the set end boom according to the relationship between the posture of the set end boom and the posture of the light source. Compared with theprior art, the method is simpler and more efficient when used for performing zero calibration.
Owner:CHINA RAILWAY CONSTR HEAVY IND
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