The invention relates to a loading
machine, in particular to a load-sensitive operation
system of the loading
machine. An oil outlet of a travelling
plunger pump is connected with a first pipeline, an energy accumulator and a two-position two-way electromagnetic
reversing valve are connected at one end of the first pipeline in parallel, and the other end of the two-position two-way electromagnetic
reversing valve is connected into an oil inlet of a
pilot operated valve. A control oil port of the piloted operated valve is connected with a control port of a load-sensitive multi-path valve through a pipeline, an oil outlet of the
pilot operated valve is connected with an
oil tank, and a feedback oil port of the load-sensitive multi-path valve is connected with a feedback oil port of a working
plunger pump. Control oil of the
pilot operated valve in the load-sensitive operation
system of the loading
machine is supplied by an oil compensating pump in the travelling
plunger pump, and one conventional pilot pump for supply oil is omitted and substituted. The working
plunger pump adjusts pressure-flow output via the feedback oil port of the load-sensitive multi-path valve according to load changes,
engine power is effectively utilized, temperature rise of hydraulic oil is controlled, and energy saving and environment friendliness are realized.