Workbench-type automatic power hammer device and using method thereof

An automatic force and bench-top technology, which is applied in the direction of measuring devices, test material strength by applying repetitive force/pulsation force, instruments, etc., can solve problems such as poor repeatability, difficult control of excitation time, and difficulty in exciting force pulses, etc., to achieve cost savings , Extensive practicability, good repeatability and adjustment

Active Publication Date: 2014-11-19
CHINA UNIV OF MINING & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] At present, the hammering method test is to hammer the structure under test by manual operation force. Since the magnitude and direction of each hammering fo...

Method used

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  • Workbench-type automatic power hammer device and using method thereof
  • Workbench-type automatic power hammer device and using method thereof
  • Workbench-type automatic power hammer device and using method thereof

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Embodiment Construction

[0019] An embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0020] The table-type automatic power hammer device of the present invention is mainly composed of a motor 5, a base 3, a stand 7, a stand cover 6, a positioning spring 14, a positioning tooth sleeve 15, a rocker arm 26, a photoelectric encoder 23, and a force hammer clamping fixed Clip 18, power hammer clamping movable clip 17, power hammer 16 constitute. The motor 5 is fixed on the bottom of the stand cover 6, the first synchronous pulley 4 is fixed on the output shaft of the motor 5, the stand cover 6 is fastened on the stand 7, and the stand 7 is installed on the base 3, and the base 3 The lower leg is the magnetic watch base 1 . The rocker arm 26 is fixed on the stand 7 by the positioning spring 14 and the positioning tooth sleeve 15, and forms a specific working angle with the vertical base 7. The seat 7 and the rocker arm 26 are axially and radiall...

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Abstract

The invention provides a workbench-type automatic power hammer device and a using method thereof, and is suitable for structural mode analysis and vibration shock tests. The workbench-type automatic power hammer device mainly comprises a motor, a base, a stand seat, a positioning gear sleeve rocker, a photoelectric encoder, a movable power hammer clamping clip, a fixed power hammer clamping clip and a power hammer, wherein the motor is fixed at the bottom of the stand seat; the rocker and the stand seat form a specific work angle through a positioning spring and a positioning gear sleeve; the photoelectric encoder is fixed to a rocker cover side at the tail end of the rocker; the power hammer is mounted in a place between the movable power hammer clamping clip and the fixed power hammer clamping clip which are mounted at the tail end of the rocker. A control signal is calculated through input shock speed, distance, shock times and frequency to control the motor to drive the power hammer to hit the surface of a workpiece to be tested according to a set required parameter, so as to realize an excitation test effect. According to the device and the method provided by the invention, the consistency, the repeatability and the regulation performance of the strength and the direction of excitation force can be ensured, so that the contact time, the strength and the shock frequency of the power hammer on the workpiece to be tested can be controlled conveniently, and ideal power pulse can be obtained more easily.

Description

technical field [0001] The invention belongs to the field of modal test equipment, and in particular relates to a workbench-type automatic hammer device method, especially suitable for workbench-type automatic power hammers with repeatable excitation force, high consistency and good adjustability, and adjustable excitation force and impact frequency. Hammer apparatus and method. Background technique [0002] The modal test is used to measure the dynamic characteristics of the mechanical structure, and its purpose is to obtain the natural frequency, mode shape and modal damping of the structure, so as to analyze the dynamic characteristics of the mechanical structure. [0003] The hammering method is often used in modal tests. The most important advantage of this method is that the excitation device (that is, the hammer) is not connected to the specimen, and does not add any mass to the structure, so it will not affect the dynamic characteristics of the specimen. [0004] Th...

Claims

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Application Information

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IPC IPC(8): G01M7/08G01N3/32G01N3/02
Inventor 李威刘玉飞徐晗杨雪锋王禹桥范孟豹魏华贤应葆华刘芳沁鞠锦勇须晓锋路恩
Owner CHINA UNIV OF MINING & TECH
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