Single freedom three-dimension spatial motion mechanism

A technology of three-dimensional space and kinematic mechanism, which is applied in the direction of manipulator, solid separation, filter and screen, etc., can solve problems such as unfavorable control, complex mechanism, and difficult kinematics solution

Inactive Publication Date: 2008-03-19
JIANGSU POLYTECHNIC UNIVERSITY
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  • Abstract
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Problems solved by technology

For example, (1) kinematics is difficult to solve; (2) the pose of the motion platform is a strong coupling o

Method used

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  • Single freedom three-dimension spatial motion mechanism

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Embodiment Construction

[0009] The technology of the present invention will be further described below by means of accompanying drawings and examples.

[0010] Accompanying drawing 1 is the structural representation of the present invention. It consists of a dynamic platform 2, a static platform 0, and three branch chains 1, 3, and 4 in the form of secondary rods. One end of the three branch chains 1, 3, and 4 is connected by a ball pair 2 , S 3 , S 5 It is connected to three non-overlapping end points on the moving platform 2, and at the same time, the other ends of the branch chains 1 and 3 rotate the joint R with a single degree of freedom 1 , R 4 They are respectively connected with frame 0, and rotating pair R 1 , R 4 The axes of rotation must be parallel. Therefore, in fact R 1 , S 2 , S 3 , R 4 A single-degree-of-freedom planar crank-rocker mechanism is formed; the other end of the branch chain 4 is connected to the frame 0 by the ball pair S6. Three endpoints R on rack 0 1 , R 4 ...

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Abstract

A spatial motion mechanism with single-degree-of-freedom for vibrating screens and parallel motion entertainment devices consists of a moving platform, a quiet platform and three second-accessory rod chains. Three ends of the three chains are connected to the three misaligned endpoints on the moving platform respectively by ball pairs, wherein the two another ends of the two chains are connected to a frame respectively by single-degree-of-freedom revolute pairs. The two rotation axes of revolute pairs are parallel to each other. Another end of one chain is connected to the frame by the ball pairs. The two rotation pairs and one ball pair on the frame are not on the same straight line. When a single-degree-of-freedom rotation pairs of a control frame moves, the moving platform can obtain the output of translation and rotation, wherein the two movements is non-independent; when the screen frame of the vibrating screen or the frames of other entertainment device on the moving platform is consolidated, the three-dimensional movement is generated. The mechanism has the advantages of simple structure and easy manufacturing and assembly.

Description

technical field [0001] The invention relates to a single-degree-of-freedom three-dimensional space motion mechanism, in particular, it provides a new type of three-dimensional space mechanism for motion vibrating screens, sports entertainment equipment, etc. that require three-dimensional motion in space. Background technique [0002] At present, the traditional vibrating screens are mainly circular vibrating screens and linear vibrating screens. Vibration is generated by inertial vibrators. The structure is complex. If it is sufficient, the sieve holes are easily blocked by "sieve grains", resulting in low screening efficiency. Patent documents [Invention Application No. 200710131525.9], [Invention Application No. 2006100881264], [Invention Application No. 200710022283X] respectively introduce a parallel motion vibrating screen with one degree of freedom, two degrees of freedom, and three degrees of freedom, which can generate three-dimensional space motion , to ensure tha...

Claims

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Application Information

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IPC IPC(8): B25J18/00B25J19/00B07B1/28B07B1/46
Inventor 沈惠平
Owner JIANGSU POLYTECHNIC UNIVERSITY
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