CN202403885U

CN202403885U - Three-way vibrating table

Info

Publication number: CN202403885U
Application number: CN2011204904524U
Authority: CN
Inventors: 蒋平; 袁建宁; 刘亚光; 柳姚
Original assignee: Nanjing Institute of Technology
Current assignee: Nanjing Institute of Technology
Priority date: 2011-12-01
Filing date: 2011-12-01
Publication date: 2012-08-29
Anticipated expiration: 2021-12-01

Abstract

The utility model discloses a three-way vibrating table, and belongs to the technical field of mechanical engineering. The three-way vibrating table comprises vibrating motors, an upper plate, a guide rail pair, a middle plate, a lower plate, a guide rail pair, supports, a bottom plate, springs, a base, sizing blocks, a linear bearing, a linear guide rail, an electric box and the like. Through the three-way vibrating table, the aims of changing the magnitude of an exciting force, the vibration strength and the vibration imbalance can be fulfilled by adjusting the included angle between a fixed eccentric block and an adjustable eccentric block on an output shaft of each vibrating motor and the phases of the adjustable eccentric blocks at two ends; and the working frequency, the frequency change mode, the running time of certain frequency and the like of each vibrating motor can be controlled through the electric box, so that the upper plate, the middle plate and the lower plate of the vibrating table produce vibration in different directions and under different strengths.

Description

The three-way vibration platform

Technical field

The utility model relates to a kind of three-way vibration platform, belongs to mechanical engineering technical field.

Background technology

In production, engineering practice and scientific experiment, mechanical vibration are ubiquitous phenomenons.Development along with modern industrial technology; The fast development of especially traffic, national defence industry; Many equipment usually are faced with the serious test of under rugged surroundings, working, and for example, the machine that high-speed motion is in operational process; Can make many airborne equipments generation judders on it, so the reliability and the dynamic perfromance thereof of equipment proposed increasingly high requirement.Thereby, vibration environment research and analyse and test simulation has great significance for scientific research and practical applications.

Through vibration test, research and grasp vibration regularity can realize the optimal design to physical construction effectively, and to the prediction of vibration equipment, so that realize the control to vibration, thereby designs and manufactures the better plant equipment of dynamic perfromance.

The purpose of vibration test and meaning are to confirm that a machine that designs, makes or member bear the ability of external vibration or self vibration in transportation and use; Make the machine can be in the predetermined age scope; Give full play of its performance, and have higher reliability.Along with to product; Especially the raising of Aerospace Products reliability requirement, as the key equipment of fail-test, the research and development of vibration experiment seems more and more for important; Various shaking tables arise at the historic moment, and are playing the part of more and more important role in the engineering field.

Shaking table is a kind of device that utilizes electronic, electric hydraulic pressure, piezoelectricity or other principles to obtain mechanical vibration.

By its exciting mode, can be divided three classes: mechanical shaker, electrohydraulic shaker and electrodynamic vibration shaker;

By its direction of excitation, can be divided into unidirectional (single-degree-of-freedom) and multidirectional (multiple degrees of freedom) shaking table;

By its function, can be divided into again single sine vibration test platform with can accomplish sine, at random, sine adds the multiple shaking table system that waits vibration test and impulse test at random.

Mechanical shaker can be divided into two types of uneven pouring weight formula and cam-types.Uneven pouring weight formula is that the centrifugal force that produces during with uneven pouring weight rotation comes the exciting vibration table surface, square being directly proportional of exciting force and unbalanced moments and rotating speed.

Multidirectional shaking table has electrodynamic type and fluid pressure type, and electrodynamic type can be realized high frequency of operation and low waveform distortion, and fluid pressure type is suitable for low frequency operation, realizes big exciting force easily.

The testpieces of many testpieces, especially Aero-Space and shipbuilding industry is not a single-degree of freedom vibration environment of living in, but multivariant, thereby can't use folk prescription commonly used at present to realize its real vibration environment to the exciting shaking table.For analog vibration environment more realistically, at the initial stage sixties, the U.S. has just begun the development of three-way vibration platform, has successfully developed the three-way vibration system that frequency of operation is higher, degree of distortion is less to the seventies.The eighties, China has also begun the research of this respect.

At present, three-dimensional and multidirectional vibrational system are more in countries use such as U.S.A, days, and in China also seldom.Increasingly mature along with technology, multidirectional shaking table will be able to promote with performance advantage and the high work efficiency of himself.

Summary of the invention

The purpose of the utility model is that the experimental teaching for production, scientific research and measuring technology provides the vibration-testing object, with the true three-dimension vibration of analog intensity and changeable frequency.

In order to realize above purpose; The three-way vibration platform of the utility model is made up of parts such as vibrating motor, upper plate, guideway, middle plate, lower plate, support, base plate, spring, base, parallels, linear bearing, line slideway, electric boxs; Vibrating motor also comprises adjustable eccentric piece, fixed eccentric block; Wherein, two vibrating motors become 90 ° of directions to be fixedly mounted on respectively on upper plate and the base plate.

Upper plate is installed on the middle plate through two closed slide pairs; Middle plate is then through becoming other two closed slide pairs of 90 ° to be installed on the lower plate with the guideway that is connected upper plate and middle plate; Base plate is supported on the base by four springs, and the center is by line slideway and linear bearing guiding; Vibrating motor output shaft two ends all are equipped with adjustable eccentric piece and fixed eccentric block; Its work is controlled by electric box; Two vibrating motors also can only be installed one; Do not load onto the guideway between plate and upper plate and the middle plate, or can only install one yet, do not load onto guideway and the guideway between middle plate and the lower plate between plate, middle plate, upper plate and the middle plate.

The principle of work of the utility model is: vibrating motor output shaft two ends all are equipped with fixed eccentric block and an adjustable eccentric piece, and the angle between adjusting adjustable eccentric piece and the fixed eccentric block can be realized the change of exciting force size and oscillation intensity; Regulate the adjustable eccentric piece of vibrating motor, make it have different phase, then can change the vibration degree of unbalancedness at vibrating motor two ends at the output shaft two ends.Be under the condition of horizontality at three-way vibration platform base plate; The working time of the frequency of operation through electric box control vibrating motor, change of frequency mode, certain frequency etc., the vibration that produces various different directions, varying strength with the upper plate that is implemented in shaking table, middle plate and lower plate.

Like this; Under the dual regulation of vibrating motor eccentric block and control program, just can on the three-way vibration platform, produce various forms of vibration operating modes, real vibrating effect is provided; Therefore; The three-way vibration platform of the utility model can solve in the production run effectively, the existing deficiency of vibration-testing object in the scientific research and in the experimental teaching of measuring technology, and its vibration environment is complicated, true, and the shaking table volume is little.

Description of drawings

The concrete structure of the utility model is provided by following examples and accompanying drawing.

Fig. 1 is the 3-D view according to the three-way vibration platform of the utility model proposition.

Specify the CONSTRUCTED SPECIFICATION of the three-way vibration platform that proposes according to the utility model below in conjunction with Fig. 1.

Embodiment

The three-way vibration platform of present embodiment is as shown in Figure 1; Mainly be made up of parts such as vibrating motor 1, upper plate 2, guideway 3, middle plate 4, lower plate 5, guideway 6, support 7, base plate 8, spring 9, base 10, parallels 11, linear bearing 12, line slideway 13, electric boxs 14, vibrating motor 1 also comprises adjustable eccentric piece 15, fixed eccentric block 16.

Said two vibrating motors become 90 ° of directions to be fixedly mounted on respectively on upper plate 2 and the base plate 8; During upper plate 2 is installed in through two closed slides secondary 3 on the plate 4,4 of middle plates are installed on the lower plate 5 through the other two parallel guideways 6 with 3 one-tenth 90 ° of the guideways that connects upper plate 2 and middle plate 4.

Said base plate 8 is supported on the base 10 by four springs 9, and the center is by line slideway 13 and linear bearing 12 guiding.

Said vibrating motor 1 output shaft two ends all are equipped with adjustable eccentric piece 15 and fixed eccentric block 16 last, and its work is by electric box 14 controls.

Except that the foregoing description, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.

Claims

1. three-way vibration platform; This shaking table is made up of vibrating motor (1), upper plate (2), guideway (3), middle plate (4), lower plate (5), guideway (6), support (7), base plate (8), spring (9), base (10), parallels (11), linear bearing (12), line slideway (13), electric box parts such as (14); Vibrating motor (1) also comprises adjustable eccentric piece (15), fixed eccentric block (16), it is characterized in that: two vibrating motors become 90 ° of directions to be fixedly mounted on respectively on upper plate (2) and the base plate (8).

2. three-way vibration platform according to claim 1; It is characterized in that: upper plate (2) is installed on the middle plate (4) through two closed slide pairs (3), and middle plate (4) is then through becoming other two closed slide pairs (6) of 90 ° to be installed on the lower plate (5) with the guideway (3) that is connected upper plate (2) and middle plate (4).

3. three-way vibration platform according to claim 1 is characterized in that: base plate (8) is supported on the base (10) by four springs (9), and the center is by line slideway (13) and linear bearing (12) guiding.

4. three-way vibration platform according to claim 1 is characterized in that: vibrating motor (1) output shaft two ends all are equipped with adjustable eccentric piece (15) and fixed eccentric block (16), and its work is controlled by electric box (14).

5. three-way vibration platform according to claim 1 is characterized in that: two vibrating motors (1) can only be installed one.