Hydraulic excitation and overload protection subsoiling device with controllable penetrating angle

Abstract

The invention discloses a hydraulic excitation and overload protection subsoiling device with a controllable penetrating angle. An upper suspension plate is welded to a rack, and a lower suspension plate is welded to the rack; one end of a connecting rack is fixedly connected with the rack, and the other end of the connecting rack is hinged with a four-bar mechanism; one end of a hydraulic cylinder is hinged with the upper suspension plate, and the other end of the hydraulic cylinder is hinged with the four-bar mechanism; the four-bar mechanism is hinged with a subsoiling shovel, and a hydraulic oil passage is connected with an electromagnetic proportional reversing valve; a pin shaft sensor is arranged at a hinge joint of the hydraulic cylinder and the four-bar mechanism, and a connectingrack angle sensor is fixedly arranged on the connecting rack; a subsoiling shovel shaft angle sensor is fixedly arranged on the subsoiling shovel, and the hydraulic oil passage is connected with a hydraulic output port of a tractor; a shaft pin sensor, a rack angle sensor, a subsoiling shovel angle sensor, and a three-position four-way electromagnetic proportional reversing valve are respectivelyconnected with a controller. The hydraulic excitation and overload protection subsoiling device with the controllable penetrating angle disclosed by the invention can effectively solve the wide-rangeadjustment problem of the penetrating angle in the subsoiling shovel operation process, realize the hydraulic self-excitation of the subsoiling shovel, and can also play a role of overload protection.

Description

technical field [0001] The invention relates to the technical field of agricultural machinery, in particular to a hydraulically excited overload protection subsoiling device with a controllable entry angle, which can adjust the entry angle of the subsoiler shovel, improve the performance of the subsoiler shovel into the soil, and has the functions of vibration excitation, resistance reduction, and overload protection. The function of protection; under the transport state, the subsoiler shovel can be retracted, and the improvement of transport passability belongs to the field of agricultural machinery. Background technique [0002] Soil subsoiling is the key technology of mechanized conservation tillage. It can break the bottom layer of the plow, improve the soil solid-liquid-gas ratio, enhance soil water storage capacity, promote the development of plant roots, and achieve the purpose of increasing production and income. The penetration performance of the subsoiler is an imp...

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Problems solved by technology

[0004] In order to overcome the deficiencies and defects in the prior art, the object of the present invention is to provide a hydraulic excitation overload protection subsoiling device with a controllable entry angle, which can effectively solve the large-scale adjustment of the entry angle during the subsoiling shovel operation. The controller controls the three-position four-way electromagnetic proportional reversing valve to realize the hydraulic self-excited vibration of the subsoiling shovel, and the amplitude and frequency of the excitation are adjustable. When the working resistance exceeds the rated value, the hydraulic cylinder controls the linkage mechanism. Make the subsoiler shovel turn counterclockwise, avoid the overload area, and play the role of overload protection

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