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Combined mechanical arm

A technology of mechanical arms and connecting rods, applied in the field of composite mechanical arms, can solve the problems of unstable operation of the working platform of the elevator, limited wider application, low load capacity, etc., to achieve increased rigidity and strength, large expansion ratio, The effect of increased load capacity

Active Publication Date: 2015-03-25
淮安市淮安区综合检验检测中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of most scissor mechanisms is that under the action of multi-directional force, the strength and rigidity of the structure in the direction of the force are not enough to bear the load-bearing effect of the force, it is prone to distortion, and the safety is not high
In addition, the load capacity of the current scissor mechanism is not high, and these weaknesses limit its wider application
If a double parallel scissor mechanism is used, although the load capacity can be enhanced, there will be a problem of asynchronous work between the two scissor mechanisms, resulting in problems such as unstable operation of the working platform of the elevator

Method used

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Embodiment Construction

[0022] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0023] A composite mechanical arm, comprising a connecting rod assembly and a connecting piece 1, the connecting rod assembly is divided into four sets, each set of the connecting rod assembly is divided into two groups, and each group of the connecting rod assembly is pivoted by the connecting rod 2 head and tail connected, the head and tail pivot joint position is the second pivot joint part 22 of the connecting rod 1;

[0024] The connecting rods corresponding to the positions in the two groups are pivotally connected to each other at a central position, and the central pivoting position is the first pivotal part 21 of the connecting rods;

[0025] Two groups of connecting rods 1 components are used to form a set of expandable mechanisms that expand and contract in one direction;

[0026] The se...

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Abstract

The invention provides a combined mechanical arm comprising four spreadable mechanisms. Second pivot joint portions of any ends of three spreadable mechanisms are connected with the three spreadable mechanisms in an end-to-end mode through connection pieces. A first pivot joint portion of the first spreadable mechanism and a first pivot joint portion of the third spreadable mechanism are connected with the second pivot joint portion of the fourth spreadable mechanism. Connecting rods of the first spreadable mechanism and correcting rods of the third spreadable mechanism are parallel. The combined mechanical arm is high in loading capacity, large in magnification ratio, capable of bearing multi-direction force, and good in rigidity, strength and safety.

Description

technical field [0001] The invention relates to the field of scissor mechanisms, in particular to a compound mechanical arm. Background technique [0002] The scissor mechanism has a wide range of applications and developments, such as foldable tents, retractable door curtains, elevators, foldable desk lamps or robotic arms, etc. It is characterized by a large expansion ratio, can be extended for a long distance and a large span, and when it shrinks, it occupies a small space, so it is used in many industries. What adopt in the application of most scissor mechanism at present is single-sided scissor mechanism or double parallel scissor mechanism, what adopt as door curtain is single-sided scissor mechanism, what elevator adopts is double parallel scissor mechanism. The main disadvantage of most scissor mechanisms is that under the action of multi-directional force, the strength and rigidity of the structure in the direction of the force are not enough to bear the load-beari...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25J18/02
Inventor 唐建柳朱培祺骆雪华梁永健岑永炽
Owner 淮安市淮安区综合检验检测中心