The invention relates to a link member (1) on an arm (90) of a crane (9), which link member is pivotally connected to said arm (90) about a horizontal axis (x) by means of a pivot joint (95) and to a gripper (8) about a further horizontal axis (y) perpendicular to the aforementioned horizontal axis (x), wherein the gripper (8) is equipped with a rotating body (81) for rotating the gripper (8) about a vertical axis (z). In order to determine the weight of the load held by the gripper (8), the link member (1) comprises an elastically deformable region (13) between the pivot joints (95, 85), the elastically deformable region (13) being deformable as a function of the stress borne by the link member (1) caused by the weight of the load. The elastically deformable region (13), together with the eyelets (11, 12), forms a substantially tubular stirrup comprising a channel (130) between the two elastically deformable side walls (131, 132) and extending along a horizontal axis (x1). A measuring beam (14) is mounted in the channel (130); the measuring beam (14) is rigidly connected to the two opposite walls (131, 132) and comprises at least one flat surface (140 ') extending in the direction of the axis, and a sensor (51, 52, 53, 54) attached to the measuring beam (14) for measuring an extension or contraction of the beam (14) due to a change in distance between the walls (131, 132) when the link member (1) is exposed to stress in a direction along the vertical axis (z).
本发明涉及一种起重机(9)的臂(90)上的连杆构件(1),该连杆构件通过枢转接头(95)围绕水平轴线(x)枢转地连接到所述臂(90),并且围绕垂直于前述水平轴线(x)的另外的水平轴线(y)枢转地连接到抓取器(8),其中所述抓取器(8)配备有用于使抓取器(8)围绕竖直轴线(z)旋转的旋转体(81)。为了确定由所述抓取器(8)保持的负载的重量,连杆构件(1)包括在所述枢转接头(95、85)之间的可弹性变形区域(13),可弹性变形区域(13)能够根据由负载的重量引起的所述连杆构件(1)承受的应力而变形。可弹性变形区域(13)与所述孔眼(11、12)一起形成大致管状的箍筋,该箍筋包括在两个可弹性变形侧壁(131、132)之间并且沿水平轴线(x1)延伸的通道(130)。在所述通道(130)的内部安装有测量梁(14),测量梁(14)刚性地连接到两个相对的壁(131、132)并且包括在所述轴线的方向上延伸的至少一个平坦表面(140’),并且传感器(51、52、53、54)附接到测量梁(14)上以用于测量当连杆构件(1)在沿着竖直轴线(z)的方向上暴露于应力时由于壁(131、132)之间的距离的变化而引起的所述梁(14)的伸长或收缩。
Load weighing connecting rod component on crane boom
起重机臂上的负载称重连杆构件
2024-04-16
Patent
Electronic Resource
Chinese