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Rigid force control device based on non-rigid connection

A control device, non-rigid technology, applied in the direction of valve operation/release device, valve device, vibration suppression adjustment, etc., can solve the problems of low control accuracy, leakage of hydraulic components, large volume, etc., to achieve improved accuracy and low processing cost , the effect of compact structure

Active Publication Date: 2021-05-28
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the device is bulky, and the use of hydraulic components may cause leakage, and the control accuracy is low

Method used

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  • Rigid force control device based on non-rigid connection
  • Rigid force control device based on non-rigid connection
  • Rigid force control device based on non-rigid connection

Examples

Experimental program
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Effect test

Embodiment

[0048] Such as figure 2 As shown, in a valve structure, the controlled component 1 is the valve core, and the connecting spring 5 connects the output rod 6 and the ball 4 to form a non-rigid connection, while keeping the ball 4 and the conical surface of the controlled component 1 always without gaps rigid contact. The controlled component 1 is subjected to the pressure (positive force) F generated by the liquid flow 1 and the spring force (reverse force) F applied by the external compression spring 2 2 The resultant external force and the force F applied by the control device 3. When the hydraulic pressure increases, the controlled component 1 produces a positive displacement, and the connecting spring 5 is stretched. The connection structure between the connecting spring 5 and the ball 4 enables the control device to maintain rigid contact with the controlled component 1 during the movement. After the force on the controlled component 1 reaches balance, when the hydraul...

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PUM

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Abstract

The invention provides a rigid force control device based on a non-rigid connection. Among them: the control part is composed of a ball, a connecting spring, an output rod and a driving part. The connection spring forms a non-rigid connection with the sphere, and the sphere forms a gap-free rigid contact with the conical surface of the controlled component. The controlled part is subjected to the external force and the force exerted by the control part. After the force on the controlled part is balanced, when the external force decreases, the displacement of the driving part drives the output rod to increase, so the force exerted on the controlled part through the ball increases, and then the force on the controlled part remains constant. The invention innovatively uses a non-rigid connection, so that the controlled part can keep in contact with the control part, the force application method is rigid during the force control process, the control precision is high, the structure is simple, the cost is low, and it is suitable for popularization and application.

Description

technical field [0001] The present invention relates to the technical field of force control devices, in particular to a rigid force control device based on non-rigid connections. Background technique [0002] For products such as valves, robots, and brakes, force control has a significant impact on their working accuracy and performance. Research on high-precision force control devices has become a field with great potential. Existing patents, such as the patent document CN108426092A, disclose a secondary adjustment method for valve components, solenoid valves and solenoid valve compression springs. A power unit is added to the valve components. The adjustment of the compression amount of the elastic element alleviates the problem of inaccurate control of the solenoid valve caused by assembly errors. However, the device adjusts the force based on the spring, which is a non-rigid force control, and the precision is not high. [0003] Another example is that the patent docu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F3/04F16F15/00F16K31/02F16K17/30
CPCF16F3/04F16F15/005F16F2230/0011F16F2230/14F16K17/30F16K31/02
Inventor 杨斌堂刘鲁楠杨诣坤
Owner SHANGHAI JIAOTONG UNIV