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An experimental platform for multi-configuration planar linkage mechanism

A technology of plane linkage mechanism and experimental platform, which can be used in machine gear/transmission mechanism testing, teaching models, instruments, etc., and can solve the problems of plane linkage mechanism design, motion demonstration, characteristic research, etc. , to achieve the effect of easy promotion and use, good application effect and novel design

Inactive Publication Date: 2011-12-07
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of single mechanism in the existing technology and the inability to carry out the design, motion demonstration and characteristic research of multi-configuration planar linkage mechanism on the same experimental platform

Method used

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  • An experimental platform for multi-configuration planar linkage mechanism
  • An experimental platform for multi-configuration planar linkage mechanism
  • An experimental platform for multi-configuration planar linkage mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] see figure 1 , figure 2 , image 3 , Figure 7 , this embodiment is a multi-configuration planar linkage experimental platform, including a panel 1, a bracket 2, a thick rod 3, a thin rod 4, a moving platform 5, a pin hole 6, a pin 7, a slender rod 8 and Some standard parts. Wherein, the panel 1 is fixedly installed on the stand, and at least two groups of through holes are arranged on the panel 1, and each group of through holes is composed of a pin shaft hole 6 and a plurality of screw holes, and the drive motor is installed on the bottom of the panel 1 together with the pin shaft 7 Connection, the bracket 2 is fixedly installed on the panel 1 and connected with the thick rod 3 through the pin shaft 7 and the screw, and the thick rod 3 and the thin rod 4 or the moving platform 5 are connected by the pin shaft 7 and the screw; Threaded holes are symmetrically provided for fixing the bracket 2 on the panel; a through hole is provided at the center of the raised par...

Embodiment 2

[0031] Such as Figure 8 As shown, it is a redundant parallel mechanism with two degrees of freedom and three rotating pairs in this embodiment, including a panel 1 , a bracket 2 , a pin shaft 7 , a thick rod 3 , a thin rod 4 , and an elongated rod 8 .

[0032] First, three brackets 2 are fixedly installed on the panel 1 by screws, and three thick rods 3 are respectively installed on the tops of the three brackets 2 through pin shafts 7 and screws to transmit the torque and movement provided by the motor. A thin rod 4 and an elongated rod 8 form a redundant parallel mechanism with two degrees of freedom and three rotating pairs. In this embodiment, a redundant driving experiment can be carried out. For the two-degree-of-freedom mechanism, three motors are used to drive to determine a reasonable motion law, and the singularity-type overcoming experiment can be realized through redundant driving. The slender rod in the mechanism is replaced with a replacement with a lower stiff...

Embodiment 3

[0034] Figure 9 The embodiment used for the planar five-bar mechanism is shown, and the planar five-bar mechanism according to the structural form of this embodiment can carry out the motion track experiment, draw the motion track of a certain point on the planar motion component, and can also be used for the dead point of the mechanism, Pole and pressure angles were tested. The structure of the planar five-bar mechanism includes a panel 1, a bracket 2, a pin shaft 7, a thick rod 3, a thin rod 4, and an elongated rod 8.

[0035] In this embodiment, two brackets 2 are fixedly installed on the panel 1, and two thick rods 3 are respectively installed on the tops of the two brackets 2 through pin shafts and screws to transmit the torque and motion provided by the motor, and the top ends of the thick rods 3 are respectively installed A thin rod 4 and an elongated rod 8 are formed, and the thin rod 4 is connected with the top of the elongated rod 8 to form a planar five-bar mechan...

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Abstract

The invention discloses a multi-structure planar linkage mechanism testing platform. The testing platform is novel in design and simple in structure, reasonably utilizes a combined planar linkage mechanism structure, and better solves the problem that multi-structure planar linkage mechanisms cannot be simultaneously designed, subjected to motion demonstration, characteristic research and the like on one testing platform. The planar linkage mechanism structures fully utilize the space of the testing platform, and the mechanism structure arrangement is effectively increased; the testing platform particularly brings convenience to experiments in aspects such as the lapping of the multi-structure planar linkage mechanisms, various mechanism motion and dynamics characteristics, and has important significance for a learner to master related knowledge of a planar linkage mechanism; meanwhile, a researcher can verify theories in the planar linkage mechanism science through the platform. The testing platform has the characteristics of convenience in manufacturing and good application effect, and is convenient to promote and use.

Description

technical field [0001] The invention relates to a connecting rod mechanism experiment platform, in particular to a multi-configuration planar connecting rod mechanism experiment platform. Background technique [0002] The planar link mechanism is a widely used mechanism, and its design and analysis have always been an important subject in the study of mechanisms. The configuration of planar linkage mechanism is diverse and complex. The current experimental platform of linkage mechanism is mainly aimed at a certain configuration of planar linkage mechanism, which is used for cognitive and demonstration experiments. It is only suitable for beginners to learn the basics of planar linkage mechanism. Knowledge. Difficulties will be encountered when designing innovations for planar linkages and when researchers study the kinematics and dynamics of multi-configuration mechanisms. Chinese patent 200820190530.7 discloses a controlled planar five-bar mechanism test bench that can pr...

Claims

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Application Information

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IPC IPC(8): G01M13/02G09B23/10
Inventor 王三民刘霞
Owner NORTHWESTERN POLYTECHNICAL UNIV