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Two-degree-of-freedom parallel mechanism with large horizontal displacement

A technology of lateral displacement and degrees of freedom, applied in the directions of manipulators, manufacturing tools, program-controlled manipulators, etc., can solve the problems of increased overall size, small lateral displacement distance, increased manufacturing cost and floor space, etc., and achieves increased lateral displacement distance. , to meet the production needs, the structure is simple and reliable

Active Publication Date: 2013-01-23
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the above-mentioned parallel mechanism, the small lateral displacement distance is its biggest shortcoming. In order to meet the larger lateral displacement distance, the overall size of the mechanism must be increased, which greatly increases the manufacturing cost and floor space.

Method used

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  • Two-degree-of-freedom parallel mechanism with large horizontal displacement
  • Two-degree-of-freedom parallel mechanism with large horizontal displacement
  • Two-degree-of-freedom parallel mechanism with large horizontal displacement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1, the third parallelogram mechanism is located on the upper side of the first parallelogram mechanism; wherein, one end of the seventh connecting rod is hinged to the midpoint of the first connecting rod, and the other end of the seventh connecting rod is simultaneously connected to the fixed platform. The slider two on the side and one end of the sixth connecting rod are hinged, the other end of the sixth connecting rod is hinged with one end of the fourth connecting rod, the other end of the fourth connecting rod is hinged with the upper end of the moving platform, and the middle of the fourth connecting rod One end of the first connecting rod and the upper end of the second connecting rod are hinged at one point, and the other end of the first connecting rod is hinged on the slider one on the lower side of the fixed platform; the first, third and fourth connecting rods are equal in length , the fifth, sixth, seventh, and eighth connecting rods are equal in...

Embodiment 2

[0037] Embodiment 2, the third parallelogram mechanism is located on the upper side of the first parallelogram mechanism; wherein, one end of the seventh connecting rod is hinged to the midpoint of the first connecting rod, and the other end of the seventh connecting rod is simultaneously connected to the fixed platform. The side slide two and one end of the sixth link are hinged, the other end of the sixth link is hinged with one end of the fourth link, the other end of the fourth link is hinged with the upper end of the moving platform, and the third link of the fourth link is hinged. One length position is hinged with one end of the first connecting rod and the upper end of the second connecting rod, and the other end of the first connecting rod is hinged with the slider one on the lower side of the fixed platform. The length of the seventh connecting rod is equal to 1 / 3rd of the fourth connecting rod, the length of the second connecting rod and the moving platform is the sa...

Embodiment 3

[0039] Embodiment 3, the third parallelogram mechanism is located on the lower side of the first and second parallelogram mechanisms; one end of the seventh connecting rod is hinged on the slider 2 on the upper side of the fixed platform, and the midpoint of the seventh connecting rod It is hinged with the midpoint of the first connecting rod, the other end of the seventh connecting rod is located below the first connecting rod and is hinged with one end of the sixth connecting rod, the other end of the sixth connecting rod is connected with one end of the fourth connecting rod and the moving platform The upper end of the first connecting rod is hinged, the other end of the fourth connecting rod is hinged with one end of the first connecting rod and the upper end of the second connecting rod, and the other end of the first connecting rod is hinged on the slider one on the lower side of the fixed platform. The first, third and seventh connecting rods are equal in length, the fou...

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Abstract

The invention relates to a two-degree-of-freedom parallel mechanism with large horizontal displacement. According to the mechanism provided by the invention, the size of a guide rail is less, and under the condition that guide rails are the same in size, the horizontal displacement distance is larger. The technical scheme is as follows: the two-degree-of-freedom parallel mechanism comprises a movable platform, a fixed platform and a supporting chain and is characterized in that the supporting chain comprises three parallelogram mechanisms, wherein a first parallelogram mechanism is formed by a sliding pair at the lower side of the fixed platform, a first connecting rod, a second connecting rod and a third connecting rod; simultaneously, a second parallelogram mechanism is formed by the second connecting rod, a fourth connecting rod, the movable platform and a fifth connecting rod, and in the second parallelogram mechanism, the movable platform is parallel to the second connecting rod; a third parallelogram mechanism is formed by the first connecting rod, the fourth connecting rod, a sixth connecting rod and a seventh connecting rod; and in the third parallelogram mechanism, the connecting rod is parallel to the sixth connecting rod, the fourth connecting rod is parallel to the seventh connecting rod, and the end part of the seventh connecting rod is hinged with a sliding pair at the upper side of the fixed platform.

Description

technical field [0001] The invention relates to a motion mechanism, especially a two-degree-of-freedom parallel mechanism with large transverse displacement. Background technique [0002] Since traditional manual operations such as packaging, sorting, handling, etc., are low in accuracy, cost, and efficiency, they cannot meet the growing market demand. Therefore, it is time to look for robots that can replace human operations. Compared with traditional manual work, robot work has the advantages of high speed, high efficiency, high precision, unaffected by the environment and sustainable work. Therefore, the replacement of human labor by robots has become an inevitable choice for historical development. The necessary way to improve the level and product quality is of epoch-making significance for my country to improve its overall competitiveness, especially for the relatively backward industrial fields, and it is also an important goal of my country's implementation of the stra...

Claims

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Application Information

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IPC IPC(8): B25J9/00
Inventor 吴伟峰李秦川马吉钢陈祖堆
Owner ZHEJIANG SCI-TECH UNIV