反铲方案选择的主要依据是设计任务书规定的使用要求，据以决定工作装置是通

The main basis for the selection of the backhoe scheme is the use requirements specified in the design task book, which determines whether the working device is general or special. The general-purpose device mainly based on backhoe should ensure the use of backhoe and take into account the performance of other devices. The special device should determine the structure plan according to the operating conditions, and take care of the performance under other conditions while meeting the requirements of the main operating conditions. <br>The selection of the overall scheme of the backhoe device includes the following aspects: <br>1. The arrangement of the boom and the boom hydraulic cylinder <br>determines the combination or integral boom, and the combination of the combination boom or the shape of the integral boom. Determine whether the boom cylinder arrangement is overhang or undermount. <br>It has been determined that the integral boom is adopted, and the arrangement of the boom hydraulic cylinder is the lower type. <br>2. Determine the length ratio of the boom to the stick, that is, the characteristic parameter = .

The selection of backhoe scheme is mainly based on the use requirements specified in the design specification, so as to determine whether the working device is general or special. The general-purpose device dominated by backhoe shall ensure the use requirements of backhoe and take into account the performance of other devices. The structural scheme of the special device shall be determined according to the operating conditions, and the performance under other conditions shall be considered while meeting the requirements of main operating conditions.<br>The selection of the overall scheme of backhoe device includes the following aspects:<br>1. Layout of boom and boom hydraulic cylinder<br>Determine the use of combined or integral boom, and the combination mode of combined boom or the shape of integral boom. Determine whether the arrangement of boom hydraulic cylinder is suspended or lower.<br>It has been determined that the integral boom is adopted, and the layout of boom hydraulic cylinder is lower type.<br>2. Determine the length ratio of boom to stick, i.e. characteristic parameter =.

The main basis of backhoe scheme selection is the use requirements specified in the design task book, which determines whether the working device is general or special. General-purpose devices with backhoe as the main component shall ensure the use requirements of backhoe and take care of the performance of other devices. The special device shall determine the structural scheme according to the operating conditions, and take care of the performance under other conditions while meeting the requirements of the main operating conditions. The overall scheme selection of backhoe device includes the following aspects: 1. Layout of boom and boom hydraulic cylinder Determine the combination or integral boom, the combination mode of the combination boom or the shape of the integral boom. Determine whether the layout of the boom hydraulic cylinder is hanging or down. It has been determined that the integral boom is adopted, and the layout of the boom hydraulic cylinder is lower. 2. Determine the length ratio of boom to stick, that is, characteristic parameter =