휠 이동을 측정하기 위한 센서를 갖는 휠 조립체

휠 이동을 측정하기 위한 센서를 포함하는 휠 조립체가 제공되며, 상기 휠 조립체는: 프레임 부재; 프레임 부재에 고정된 액슬; 액슬에 회전 가능하게 장착되고 휠 리세스를 포함하는 휠; 휠과 함께 회전하기 위해 휠 리세스 내에 위치한 코드 링; 및 프레임 부재에 결합되고 코드 링에 인접하게 위치된 센서 장치를 포함한다. 센서 장치는 코드 링의 이동을 감지하고 휠 이동을 나타내는 출력 신호를 발생한다. 휠 조립체를 포함하는 자재 취급 차량도 제공된다. Accordingly to an aspect of the invention, there is provided a wheel assembly (130) including a sensor for measuring wheel movement comprising: a frame member (136); an axle (140) fixed to the frame member (136); a wheel (132) rotatably mounted to the axle (140), wherein the wheel (132) comprises a wheel recess (137); a code ring (190) located within the wheel recess (137) for rotation with the wheel (132); and a sensor device (300) coupled to the frame member (136) and located adjacent to the code ring (190), wherein the sensor device (300) senses movement of the code ring (190) and generates an output signal indicative of the wheel movement. The frame member (136) comprises opposing axle plates (144, 146) for supporting the axle (140), each of the opposing axle plates (144, 146) comprising a bore (144A, 146A) formed therethrough for receiving the axle (140). One of the opposing axle plates (144, 146) comprises a further bore (147) through which a portion of the sensor device (300) at least partially extends. The wheel assembly (130) further comprises a side member (180, 400) that is coupled to the one axle plate (144, 146) and comprises a cavity (182) or an opening (404) that receives and at least partially encloses the sensor device (300).