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Automatic flexible impact hammer module

A flexible force, automatic technology, applied in the direction of measuring device, impact test, machine/structural component test, etc., can solve the problems of poor repeatability, complex device structure, difficult to excite force pulse, etc., to achieve easy manufacturing process, overall simple structure

Inactive Publication Date: 2016-09-28
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the hammering method test is to hammer the structure under test with manual operation force, because it is difficult to keep the size and direction of each hammering force consistent, and when a large hammering force is required, the structure of the device is complicated, and the excitation time is also difficult. control, and thus poor repeatability, making it difficult to excite ideal force pulses

Method used

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  • Automatic flexible impact hammer module

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Embodiment Construction

[0013] Below in conjunction with accompanying drawing and concrete example further illustrate:

[0014] When the power is turned on, the motor rotor is controlled by the pulse signal to rotate. When the motor rotor rotates clockwise, the rotor drives the cam drive shaft to rotate clockwise through the coupling, and the cam drive shaft drives the cam (1) to rotate clockwise, and the cam ( 1) Clockwise rotation drives the flexible hammer handle (2) to swing downward around the upper shaft of the stand (4), the return spring (3) is gradually stretched, and the hammer at the top of the flexible hammer handle (2) moves along with the hammer handle ( 2) The downward swing completes the hammering action. When hammering, the force sensor (7) between the replaceable hammerhead material (8) and the hammer body (6) collects the hammering force, and the signal is sent to the computer in real time. As the cam (1) continues to rotate, the flexible hammer handle (2) swings upward under the ...

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Abstract

The invention discloses an automatic flexible impact hammer module. The automatic flexible impact hammer module is composed of a control portion and an execution portion. The control portion is composed of a stepping motor, a shaft coupling, a cam driving shaft and a cam, provides a controllable power source for the automatic flexible impact hammer module and controls a hammering force and a hammering frequency; and the execution portion is mainly composed of a flexible hammer handle, a return spring, a standing seat and a hammerhead, the cam drives rotates to drive the flexible hammer handle to swing vertically, and the hammerhead realizes hammering motion. A force sensor at a hammerhead portion can measure the hammering force as excitation signals during mechanical modal analysis. The stepping motor is employed for control, the generated hammering force is enabled to be more stable and repeatable, the flexible hammer head is employed, the large hammering force is output while labor is saved, the overall structure is simple, and the manufacturing is convenient.

Description

technical field [0001] The invention relates to an automatic flexible hammer module, in particular to an automatic flexible hammer device controlled by a stepping motor and relying on a flexible hammer handle to drive a hammer head to complete hammering. Background technique [0002] Modal analysis is a modern method to study the dynamic characteristics of structures, and it is the application of system identification method in the field of engineering vibration. Modal is the natural vibration characteristic of mechanical structure. Usually, modal experiment is used to measure the dynamic characteristics of mechanical structure, and the natural frequency, mode shape and modal damping of the structure are obtained, which can be used for the vibration characteristic analysis, vibration fault diagnosis and prediction of the structural system. And provide a basis for the optimal design of structural dynamic characteristics. [0003] The modal test often adopts the hammering met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/08
CPCG01M7/08
Inventor 汪迪松李剑周洪梅李臻峰步正延
Owner JIANGNAN UNIV