Abstract: A five-degree-of-freedom parallel mechanism and a series-parallel multi-degree-of-freedom equipment having the parallel mechanism are disclosed, and can machine complex components and parts as well as large structural parts and implement multi-degree-of-freedom numerical control machining, such as offsite maintenance of large equipment. The parallel mechanism includes: a rack; a movable platform; a first chain connected with the rack by at least two revolute pairs with axes intersecting with each other perpendicularly, and connected with the movable platform by at least two revolute pairs with axes intersecting with one another perpendicularly; a second chain having the same structure as the first chain; and a third chain including a main branch chain and two auxiliary branch chains, wherein the first chain, the second chain, and the third chain are separately connected between the rack and the movable platform.

Abstract: A two-degree-of-freedom parallel robot with a spatial kinematic chain includes a fixed platform, a movable platform, two driving devices, and two branch chains. Each driving device includes an active arm and a driving unit, and the two active arms are in the same reference plane. An end bracket is hinged on the active arm. Each branch chain includes two shaft rods and two chain rods. One of the two shaft rods is arranged on the active arm or the end bracket, and the other one thereof is arranged on the movable platform. The two chain rods and the two shaft rods form a parallelogram.

Abstract: A two-degree-of-freedom parallel robot with a spatial kinematic chain includes a fixed platform, a movable platform, two driving devices, and two branch chains. Each driving device includes an active arm and a driving unit, and the two active arms are in the same reference plane. An end bracket is hinged on the active arm. Each branch chain includes two shaft rods and two chain rods. One of the two shaft rods is arranged on the active arm or the end bracket, and the other one thereof is arranged on the movable platform. The two chain rods and the two shaft rods form a parallelogram.

Abstract: A five-degree-of-freedom parallel mechanism and a series-parallel multi-degree-of-freedom equipment having the parallel mechanism are disclosed, and can machine complex components and parts as well as large structural parts and implement multi-degree-of-freedom numerical control machining, such as offsite maintenance of large equipment. The parallel mechanism includes: a rack; a movable platform; a first chain connected with the rack by at least two revolute pairs with axes intersecting with each other perpendicularly, and connected with the movable platform by at least two revolute pairs with axes intersecting with one another perpendicularly; a second chain having the same structure as the first chain; and a third chain including a main branch chain and two auxiliary branch chains, wherein the first chain, the second chain, and the third chain are separately connected between the rack and the movable platform.