摘要:
The invention relates to a rolling element bearing comprising a cage with cage pockets for guiding rolling elements which are guided in the cage pockets with an axial play at least in the axial direction of the rolling element bearing, thereby defining an axial cage pocket clearance. The invention is characterized in that the cage pocket clearance in a plurality of cage pockets ranges between 0.07 millimeter and 0.17 millimeter.
摘要:
The invention relates to a rolling element bearing comprising a cage with at least one first group of guide pockets in which rolling bodies are guided with a certain play. According to the invention, the degree of play is different at least in a first guide pocket of the first group from the degree of play in a second guide pocket of said first group of guide pockets.
摘要:
A method for detecting structure-borne noise events in a roller bearing, wherein a measuring signal M of a pressure or dilatation sensor arranged on a roller bearing is fed to a frequency filter for filtering out undesired signal parts. The aim of the invention is to determine structure-borne noise waves or structure-borne noise events by an evaluation device. As a result, a first variance value is calculated from digital values of the frequency filter output signal and at least one second variance value is calculated from other digital values of the frequency filter output signal and the weighted arithmetic average of the at least two variance values (new variance, old variance) is calculated with the aid of a retrocursive calculation of the variance value. A surpassing of the weighted arithmetic variance average value (V) exceeds a pre-selected variance threshold value (vsw). It is subsequently evaluated as a structure-borne noise event provoked by mechanical damage to the roller bearing.
摘要翻译:一种用于检测滚子轴承中的结构噪声事件的方法,其中布置在滚子轴承上的压力或扩张传感器的测量信号M被馈送到频率滤波器以滤除不期望的信号部分。 本发明的目的是通过评估装置来确定结构传播的噪声波或结构噪声事件。 结果,根据频率滤波器输出信号的数字值计算第一方差值,并且根据频率滤波器输出信号的其它数字值和至少两个方差值的加权算术平均值来计算至少一个第二方差值 (新方差,旧方差)通过方差值的回归计算来计算。 超过加权算术方差平均值(V)超过预先选择的方差阈值(V SUB SW)。 随后将其评估为由滚动轴承的机械损坏引起的结构噪声事件。
摘要:
The invention relates to a method and a computer program for determining operating parameters such as, in particular, the rotational speed, the rotational direction, the radial force, the axial force or of structural sound events of a rotating roller bearing to which a sensor arrangement is fixed which, on rotation of the roller bearing delivers a sinusoidal signal, depending on its rotational position, which is sampled at sampling points k, k+1, k+2, . . . To determine the rotational speed, the rotational direction, the radial force and/or the axial force, a mean value is determined by means of estimation and the operating parameters are determined on the basis of a corrected signal which does not obtain an offset by subtraction of the estimated mean value from the sensor signal. To determine structural sound events, the sensor signals are filtered in a high-pass filter and structural sound occurring is determined by estimating a statistical moment of at least the second order. The invention also relates to a roller bearing which is provided with an evaluating device for carrying out the method.
摘要:
A measuring arrangement in a roller bearing, which determines the direction of displacement of a displaceable bearing component in relation to a stationary bearing component. Four pressure-dependent resistors (R1, R2, R3, R4) of a bridge circuit are arranged successively in a line, in a measuring area on a bearing component and in a parallel manner in relation to the direction of displacement of the rolling body or the displaceable rolling component. The distance (R1-R2) is exactly the same as the distance (R3-R4) and the distance (R2-R3) is greater than the other distances. The positions of the resistors and the bridge circuit are selected in such a manner that a single output signal with an asymmetrical form is created. The rotational direction is, for example, determined by the evaluation of the deviation of a maximum of the mean position between two adjacent minima.
摘要:
A measuring arrangement in a roller bearing, which determines the direction of displacement of a displaceable bearing component in relation to a stationary bearing component. Four pressure-dependent resistors (R1, R2, R3, R4) of a bridge circuit are arranged successively in a line, in a measuring area on a bearing component and in a parallel manner in relation to the direction of displacement of the rolling body or the displaceable rolling component. The distance (R1-R2) is exactly the same as the distance (R3-R4) and the distance (R2-R3) is greater than the other distances. The positions of the resistors and the bridge circuit are selected in such a manner that a single output signal with an asymmetrical form is created. The rotational direction is, for example, determined by the evaluation of the deviation of a maximum of the mean position between two adjacent minima.
摘要:
The invention relates to a method and a computer programme for detecting the stationary state of a roller bearing, comprising z rolling bodies, where z is a whole number, preferably an even number, to which a sensor arrangement is fixed, delivering a sinusoidal signal, dependent on the rotational position of the bearing on the rotation of the roller bearing. Said sinusoidal signal is sampled, whereupon sampled values are determined. According to the invention, a first average value (MW1) of the sampled values of a first time interval (J1) is determined (S120), whereupon the corresponding average value (MW2, MW3) of other time intervals (J2, J3) is determined (S132). The roller bearing is considered stationary as long as A) the corresponding average value (MW2, MW3) of the other time intervals (J2, J3) does not differ (S134) significantly from the first average value (MW1) and/or B) the gradient between the first average value (MW1) and the corresponding average value (MW2, MW3) of the other time intervals does not differ significantly from 0 (S335). The invention further relates to a roller bearing, provided with an analytical device for carrying out the inventive method or the computer programme.
摘要:
A method for detection and quantitative evaluation of a balance error occurring in a component-bearing system. Static and dynamic forces acting upon the bearing are determined by sensors of a measuring bridge, which are disposed on a rolling bearing and which change the inherent electrical resistance according to the applied pressure, and are made available for analysis in a computer in the form of a periodic test signal that is common to both forces. In order to analyze the test signal, the weighted average of the modulation frequency generated by a balance error and the weighted mean variance thereof are determined from the test signal. The variance is then compared with a given variance threshold value. A variance lying below the variance threshold value is considered to be an indication of a significant balance error in the bearing.
摘要:
The invention relates to a method and a computer programme for detecting the stationary state of a roller bearing, comprising z rolling bodies, where z is a whole number, preferably an even number, to which a sensor arrangement is fixed, delivering a sinusoidal signal, dependent on the rotational position of the bearing on the rotation of the roller bearing. Said sinusoidal signal is sampled, whereupon sampled values are determined. According to the invention, a first average value (MW1) of the sampled values of a first time interval (J1) is determined (S120), whereupon the corresponding average value (MW2, MW3) of other time intervals (J2, J3) is determined (S132). The roller bearing is considered stationary as long as A) the corresponding average value (MW2, MW3) of the other time intervals (J2, J3) does not differ (S134) significantly from the first average value (MW1) and/or B) the gradient between the first average value (MW1) and the corresponding average value (MW2, MW3) of the other time intervals does not differ significantly from 0 (S335). The invention further relates to a roller bearing, provided with an analytical device for carrying out the inventive method or the computer programme.
摘要:
The invention relates to a data capture system and to a processing system (1) for a roller bearing, wherein at least one sensor element (19), conductor strips (4) and electronic components (5, 6) are arranged adjacent to a flexible carrier material (2). The sensor element (19), the conductor strips (4) and the electronic components (5, 6) are directly connected to the flexible carrier material (2) such that said type of data capture system and data processing system (1) can be produced in an economical manner and with varying applications.