一、概述最近日立建机公司与东京大学畑村研究室一起研制成工程机械用销轴型载荷传感器。这种传感器具有如下的优点:①能测出大载荷,精度高。②采用中空销轴,测量块配置在销轴的中空部。与通常的实心销轴相比,销轴的弯曲刚性、强度都相差无几。③现用的中空销轴与以前常用的实心销轴在外形尺寸上完全相同,因此便于在机器上安装。④载荷测量部分装在销轴内,可保护其免受外力的影响,提高了可靠性和耐久性。随着电子技术在工程机械中的广泛使用,越来越需要测出施加在工程机械上的外 I. INTRODUCTION Recently Hitachi Construction Machinery Co., Ltd. developed a pin-type load cell for construction machinery together with the Tokimura Research Laboratory of the University of Tokyo. This sensor has the following advantages: 1 It can measure large loads with high accuracy. 2 The hollow pin is used, and the measuring block is arranged in the hollow part of the pin shaft. Compared with the normal solid pin shaft, the bending rigidity and strength of the pin shaft are almost the same. 3 The currently used hollow pin shaft is identical to the previously used solid pin shaft in terms of overall dimensions, so it is easy to install on the machine. 4 The load measuring part is installed in the pin shaft, which can protect it from external force and improve the reliability and durability. With the widespread use of electronic technology in construction machinery, there is an increasing need to measure the external forces imposed on construction machinery.