Four-degree-of-freedom connecting rod working mechanism containing composite hinges

Abstract

The invention discloses a four-degree-of-freedom connecting rod working mechanism containing composite hinges. A base is connected with a track moving device through a rotating device, three pairs of parallel and symmetrical pedestals are arranged on the base, a pair of pedestals in the middle is hinged with one end of a large arm, the other end of the large arm is hinged with the middle part of a small arm, and one end of the small arm is hinged with an end actuator; the other end of the small arm is hinged with a piston rod of a small arm cylinder, and a cylinder sleeve of the small arm cylinder is hinged with the pedestals at one end of the base; the pedestals at the other end of the base are hinged with one end of a pull rod; the pull rod, a piston rod of a large arm cylinder and the middle part of a rocker are respectively connected through hinges to form two composite hinges distributed symmetrically; a cylinder sleeve of the large arm cylinder is hinged with the large arm, and one end of the rocker is hinged with the middle part of the large arm; and the other end of the rocker is hinged with a cylinder sleeve of an end actuator cylinder, and a piston rod of the end actuator cylinder is hinged with the end actuator. The working mechanism has the advantages of high rigidity, large working space, strong bearing capacity and convenience and instantaneity in control.

Description

technical field [0001] The invention relates to a mechanism innovation of a mechanical arm, especially an innovation of a four-degree-of-freedom link working mechanism including a compound hinge. Background technique [0002] Mechanism is the core of machinery and equipment, and the innovation of mechanism has always been the key to the innovation of machinery and equipment. It is very important to develop corresponding institutions with independent intellectual property rights to improve the core competitiveness of the technological level of my country's machinery and equipment. To realize functional working devices such as excavation, loading, and handling, it is more common to use linkage mechanisms. Chinese patent CN2559619Y relates to a loader forward rotation eight-bar linkage mechanism; Chinese patent CN201687021U relates to a loader forward rotation six-bar linkage mechanism. In addition, common excavator working mechanisms are also composed of linkages. However, mo...

AI Technical Summary

Problems solved by technology

However, most of the existing connecting rod working devices have their own advantages and disadvantages. Some have large working space but low carrying capacity; on the contrary, those with high carrying capacity have small working space, which affects the working efficiency of mechanical equipment.

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