| 摘要 |
<p>Construction vehicles of the type having a pair of lift arms extending from the frame to support a work implement, have generally been restricted to operating one specific tool. The attempt to combine the operation of several different work implements has been met with severe functional restrictions since some work implements have specific requirements not found in the operation of others. In order to provide a lift arm linkage arrangement (25) that incorporates the functional requirements necessary to operate a plurality of work implements (38) while maintaining a simple, yet efficient construction, an electronic control means (90) has been included in the design. The electronic control means (90) includes a plurality of sensors (142, 144) that are operatively associated with the lift (42) and tilt (56) means of the lift arm arrangement (25). The sensors (142, 144) enable the electronic control means (90) to constantly monitor the current position of the lift arms (26) and the work implement (38) and compare them with a programmed sequence of movements. The electronic control means (90) is further able to automatically adjust the position of the lift arms (26) and the work implement (38) in accordance with the programmed sequence.</p> |
