CN105987800A - Vibration test fixture and installation method thereof - Google Patents
Vibration test fixture and installation method thereof Download PDFInfo
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- CN105987800A CN105987800A CN201510055394.5A CN201510055394A CN105987800A CN 105987800 A CN105987800 A CN 105987800A CN 201510055394 A CN201510055394 A CN 201510055394A CN 105987800 A CN105987800 A CN 105987800A
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Abstract
The invention discloses a vibration test fixture and an installation method thereof. The vibration test fixture comprises an overall frame; a tested product is installed on the overall frame; the overall frame is of a beam type structure of which the upper part, front part, left part and right part are open; the overall frame includes a base assembly which provides bottom support for the tested product, and a back assembly which is arranged at the upper part of the base assembly and provides back support for the tested product; the tested product is fixedly connected with the base assembly and the back assembly; the vibration test fixture also comprises damping devices arranged on the base assembly and the back assembly; and the tested product is fixedly connected with the base assembly and the back assembly through the damping devices. With the vibration test fixture and the installation method thereof of the invention adopted, the technical problems of high material consumption, low strength, low rigidity and poor vibration reduction performance of an existing vibration test fixture can be solved.
Description
Technical field
The present invention relates to test tool field, especially relate to a kind of fixture being applied to vibration test and installation method thereof.
Background technology
In carrying out vibration test test process, typically by vibration test fixture, test article is securely fixed on the work top of vibration table, and the vibrational energy of vibration table is passed to test specimen, therefore the quality direct relation of vibration test fixture the quality of vibration test.Fixture off quality, in process of the test, because the conduction easy distortion of energy, causes the vibration value of each point on fixture to differ greatly, say, that the uniformity of fixture is very poor.Being usually present multistage resonance in the test frequency range of vibration test, vibration control is extremely difficult.And some fixture is because quality is excessive, easily cause the waste of material.Meanwhile, the work top area also frequently running into vibration mechine when vibration test is too small, and the base area of test specimen is on the contrary more than the situation of testing stand footprint.Now, the surrounding of product to be tested stretches out testboard table top, is highly detrimental to the installation of vibration test fixture frock.Therefore, the test article that volume how can be allowed excessive is arranged on less testboard table top, and vibration test fixture frock can have bigger resonant frequency and rigidity in vibration processes, just becomes the difficult point during design of current vibration test fixture.
In the prior art, there are following several documents relevant with the present patent application.
nullDocument 1 is that Zhuzhou Nancheshidai Electric Co., Ltd was in application on 04 28th, 2011，And announce on October 31st, 2012，Publication No. is that Chinese invention patent " a kind of vibration test fixture and installation method thereof " this patent of the present invention of CN102759437A discloses a kind of vibration test fixture and installation method thereof，It is applied to test specimen and hangs the vibration test of mounting means，Including: general frame and crossbeam，Column and the general frame of girder composition，General frame bottom is connected on vibration table surface by underframe，Test product is suspended on the inside of general frame by crossbeam，T-shaped one it is provided with on the girder on general frame top，The bottom of crossbeam arranges T-slot two，Test product is connected with the T-slot two of crossbeam bottom by T-bolt，The two ends of crossbeam are connected with the T-slot one on girder top by T-bolt.This grip device and installation method thereof make test product can do 360 ° of rotations in general frame, and versatility is extremely strong, cost, volume are little, light weight, good rigidly, easy for installation, work efficiency is high, and resonant frequency is higher, has stronger practicality.
Document 2 is to be applied on November 22nd, 2012 by Avic Huadong Photoelectric Co., Ltd., and on 06 05th, 2013 bulletin, notification number was the Chinese utility model patent " a kind of vibration tong device " of CN202974610U.This utility model patent discloses a kind of vibration tong device, and including vibrating bottom plate and fixed plate, fixed plate is located on vibrating bottom plate, and fixed plate both sides are equipped with the gripper shoe being connected with vibrating bottom plate, and fixed plate is provided with the stationary window for stuck-module.Vibrating bottom plate is threaded connection together with being welded and fixed with fixed plate and gripper shoe the most simultaneously.Being combined by vibrating bottom plate and gripper shoe and fixed plate and form a vibration entirety, shock resistance is good, it is possible to realizes multimode and vibrates simultaneously.Meanwhile, module convenient disassembly, time saving and energy saving, reduce design cost.
Document 3 is in application on 09 17th, 2003 by Chongqing Zongshen Technology Development & Research Co., Ltd, and in December in 2004 bulletin on the 22nd, notification number is the Chinese utility model patent " damping clamp for engine detection test " of CN2665695U.This this utility model relates to a kind of damping clamp for engine detection test, for the fixture of clamped and suspended electromotor.It is fixed on base plate for installing the left and right fixed support hanging electromotor including base plate.Base plate is made up of two upper plates being parallel to each other and lower shoe, upper plate is positioned at above lower shoe, connect with bolt, nut therebetween, and between upper and lower base plate, it is provided with buffer compartment off member, bolt is also cased with cushion rubber bumper, it is between upper plate and nut, and this damping clamp can make the collision shock energy between its each parts be slowed down largely, also reduces the work noise of fixture simultaneously.
Although three of the above scheme is widely used at present, but shortcoming is the most obvious:
(1) document 1 uses comprehensive cube frame, test specimen is put into framework carries out vibration test, by the spacing test specimen in the multi-faceted ground of framework, test article is made to add steadiness in vibration, but the use to material is more, fixture is made the most solid, and energy is transmitted by many beams, adds resonance point.Meanwhile, also result in framework and can not use solder up, need after putting into test product, mounting rail could use at top bolt install or lean on the mode of chock clamping to fix test specimen.Therefore, the position causing bolt to be tightened often occurs loose situation of shaking during vibration test, leverages the intensity of vibration test fixture frock.Document 1 is applied on the test specimen of equal size, uses the cube frame form wrapping test specimen, and the weight of vibration test fixture frock is clearly more than the weight of test specimen, while causing waste of material, adds the vibrational energy that vibration mechine needs.In this scenario, the number of parts that energy passes through is more, and the weld that part is connected with part is the link that vibration test fixture is more weak, is the trouble point of vibration test fixture, and therefore the trouble point in cube frock scheme is more.
(2) document 2 uses the form that base plate and fixed plate support, and this vibration tong uses plate structure, and intensity and the rigidity of plank frame are the most relatively low, although material has been saved but intensity is the highest, is therefore suitable only for the vibration test carrying out lighter module.Owing to the rigid of plate is the highest, this clamp fixture easily deforms upon when in the face of strenuous exercise.
(3) document 3 still uses base plate backboard and the form of back support; although bottom have employed glissando; this protects the test specimen impact protected from vibration test energy to a certain extent; but the back of such scheme frock and top rigidity are poor; in horizontal vibration is tested, the glissando of bottom can be made to play certain amplification.Simultaneously as do not take glissando at back, the effect of reducing vibration therefore cannot be reached when horizontal vibration.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of vibration test fixture and installation method thereof, it is possible to the technical problem that the materials'use overcoming existing vibration test fixture to exist is more, intensity is the highest, rigidity is not enough, damping property is poor.
In order to realize foregoing invention purpose, the present invention specifically provides the technic relization scheme of a kind of vibration test fixture, vibration test fixture, including: general frame, test specimen is arranged in described general frame, and described general frame uses and is open girder structure on top, front portion, left part and right part four direction.Described general frame includes the base assembly providing bottom support for described test specimen, and is arranged on the described base assembly top back element for described test specimen offer back support.
Preferably, described vibration test fixture also includes the damping device being arranged in described base assembly, back element, described test specimen by described damping device and described base assembly, back element is fixing is connected.
Preferably, described base assembly includes intermediate beam, girder, crossbeam and cant beam, being formed rectangular frame structure crisscross in horizontal plane by some described girders, some described intermediate beams are arranged between described girder, for reinforcing described rectangular frame structure.Described crossbeam runs through the rectangular frame structure being made up of described girder with the direction being parallel to horizontal girder, and extends outside left and right the two of described rectangular frame structure along its length.Described cant beam is arranged between the end of described girder and the end of described crossbeam, for being fixed the crossbeam extended outside described rectangular frame structure left and right two.
Preferably, described back element includes:
Some root bottom parts are fixed on described girder and crossbeam and are cross-linked the column at place；
It is arranged on the back timber at described column top；
The some left and right sides being arranged on described back timber and described base assembly, and the diagonal brace between back.
Preferably, described girder is made up of channel-section steel, two described girders are parallel to each other, be horizontally installed on described base assembly foremost and rearmost end, and opening is outwardly, places the most dorsad.The described girder of other more than two is parallel to each other, is longitudinally disposed between two horizontal, parallel girders, and with horizontal girder vertical connection, lay respectively at the girder opening of two longitudinal directions of high order end and low order end inwardly.Some described crossbeams are laterally arranged between longitudinal girder and both sides in string, intersect vertically with longitudinal girder, and are positioned at the rear end of described base assembly, and the intersection of described base assembly place plane and described back element place plane.Some intermediate beams in parallel to each other, be placed across in the region that is made up of longitudinal girder, the horizontal girder that is positioned at front end, and crossbeam, described intermediate beam intersects vertically with the girder of longitudinal direction.The end of four cant beams respectively with described base assembly before and after the horizontal end of main beam in both sides, and the end of described crossbeam is connected.Described base assembly also include being symmetrically disposed in outside described longitudinal girder two boss, the height of described boss is concordant with described middle depth of beam.
Preferably, the described column of more than two, intersects vertically with described crossbeam and longitudinal girder along vertical respectively in the direction of described base assembly.Described back timber is placed across the top of described base assembly, the top of described column, and the back of described back timber connects with the end of described column, and the side of described back timber is concordant with the side of described column.Diagonal brace one end of more than three is connected to the junction of described column and described back timber, and the other end is connected to the junction of the horizontal girder of longitudinal girder and rearmost end.One end of other two diagonal braces is connected to the junction of described crossbeam and described cant beam, and the other end is connected to two root posts of the left and right sides and the junction at described back timber two ends.
Preferably, at described intermediate beam and boss, and it is positioned on described base assembly horizontal girder foremost and is provided with damping device installing hole equably in array-like.
Preferably, being provided with damping device installing hole on described back timber equally spacedly, the position of described damping device installing hole is adapted to the back setting height(from bottom) of described test specimen.
Preferably, the bottom of described base assembly is provided with installing hole, and described installing hole is equally arranged in the bottom of described intermediate beam, girder, crossbeam and cant beam.Described intermediate beam, longitudinal girder, crossbeam between longitudinal girder, and the installing hole being positioned on the horizontal girder that described base assembly is anterior relative to described cant beam, be positioned at the crossbeam outside longitudinal girder of the described rectangular frame structure left and right sides, and the horizontal girder distribution being positioned at described base assembly rear portion is the most intensive.
Preferably, described general frame uses integral channel steel welding construction, and described intermediate beam, girder, crossbeam, cant beam and back timber all use the C-shaped channel steel being internally provided with reinforcement, and described reinforcement scarfweld is at the inner surface of described C-shaped channel steel.
Preferably, the transverse width of described base assembly is not less than the transverse width of described test specimen, using bolt, nut mode to be connected between described base assembly, back element with described damping device, the bottom of described vibration test fixture is arranged on the table top of vibration mechine.
The present invention the most additionally specifically provides the technic relization scheme of a kind of vibration test fixture installation method, comprises the following steps:
The bottom of described vibration test fixture is arranged on the table top of vibration mechine；
Test specimen is arranged in the general frame being made up of base assembly and back element, is fixedly connected by described damping device between described test specimen and described base assembly, back element.
Preferably, when the footprint of described vibration mechine is more than the bottom area certain value of described vibration test fixture, by being distributed in, the installing hole bottom described base assembly is fixing with the table top of described vibration mechine to be connected.
Preferably, when the footprint of described vibration mechine is less than the bottom area certain value of described vibration test fixture, by described intermediate beam, longitudinal girder, crossbeam between longitudinal girder, and it is positioned on the horizontal girder that described base assembly is anterior and is distributed the most intensive installing hole and fixes with the table top of described vibration mechine and be connected.
By implementing vibration test fixture and the installation method thereof that the invention described above provides, have the advantages that
(1) present invention uses the general frame girder structure of open type, relative to the clamp fixture structure of comprehensive cube packaging type, has the advantages such as structural rigidity is good, volume is little, lightweight, intensity is high, easy to use；
(2) vibration test fixture of the present invention is being installed and in process of the test, the number of parts that vibration passes through is less, therefore resonance point is less, entirety has higher resonant frequency, there is the versatility that can install multiple different size of test product, be highly suitable for the situation that vibration mechine table top is too small；
(3) vibration test fixture of the present invention is provided with damping device in bottom and back, it is possible to protects test specimen protected from the impact of vibration test energy in horizontal and vertical both direction, can reduce the vibrational energy that vibration mechine needs simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below.It should be evident that the accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other embodiment according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of detailed description of the invention of vibration test fixture of the present invention；
Fig. 2 is the structural representation of base assembly in a kind of detailed description of the invention of vibration test fixture of the present invention；
Fig. 3 is the structural representation of general frame in a kind of detailed description of the invention of vibration test fixture of the present invention；
Fig. 4 is the polycrystalline substance schematic diagram of a kind of detailed description of the invention of vibration test fixture of the present invention；
Fig. 5 is the structural representation of vibration test fixture of the present invention a kind of detailed description of the invention middle girder；
In figure: 1-general frame, 2-damping device, 3-intermediate beam, 4-girder, 5-crossbeam, 6-test specimen, 7-cant beam, 8-column, 9-diagonal brace, 10-back timber, 11-installing hole, 12-damping device installing hole, 13-boss, 14-reinforcement, 15-C type channel-section steel, 16-base assembly, 17-back element.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete description.Obviously, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
As shown in accompanying drawing 1 to accompanying drawing 5, giving the specific embodiment of vibration test fixture installation method of the present invention, the invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, the specific embodiment of a kind of vibration test fixture, including: general frame 1, test specimen 6 is arranged in general frame 1, and general frame 1 uses and is open girder structure on top, front portion, left part and right part four direction.General frame 1 includes the base assembly 16 providing bottom support for test specimen 6, and is arranged on base assembly 16 top and provides the back element 17 of back support for test specimen 6.Test specimen 6 is fixed be connected with base assembly 16, back element 17.As one of the present invention preferably specific embodiment, vibration test fixture also includes the damping device 2 being arranged in base assembly 16, back element 17, and test specimen 6 is fixed by damping device 2 be connected with base assembly 16, back element 17.
Base assembly 16 farther includes intermediate beam 3, girder 4, crossbeam 5 and cant beam 7, some girders 4 form rectangular frame structure crisscross in horizontal plane, and some intermediate beams 3 are arranged between girder 4, for reinforcing rectangular frame structure.Crossbeam 5 runs through, with the direction being parallel to horizontal girder 4, the rectangular frame structure being made up of girder 4, and extends outside left and right the two of rectangular frame structure along its length.Cant beam 7 is arranged between the end of girder 4 and the end of crossbeam 5, for being fixed the crossbeam 5 extended outside rectangular frame structure left and right two.
Girder 4 is made up of channel-section steel, two girders 4 are parallel to each other, be horizontally installed on base assembly 16 foremost and rearmost end, and opening is outwardly, places the most dorsad.The girder 4 of more than two is parallel to each other, is longitudinally disposed between two horizontal, parallel girders 4, and with horizontal girder 4 vertical connection, lay respectively at girder 4 opening of two longitudinal directions of high order end and low order end inwardly.Some crossbeams 5 are laterally arranged between longitudinal girder 4 and both sides in string, intersect vertically with longitudinal girder 4, and are positioned at the rear end of base assembly 16, and the intersection of described base assembly place plane and described back element place plane.Some intermediate beams 3 are parallel to each other, equally spaced from each other, be placed across in the region that is made up of longitudinal girder 4, the horizontal girder 4 that is positioned at front end, and crossbeam 5, intermediate beam 3 intersects vertically with the girder 4 of longitudinal direction.The end of four cant beams 7 respectively with base assembly 16 before and after the end of the horizontal girder 4 in both sides, and the end of crossbeam 5 is connected.Base assembly 16 also includes two boss 13 being symmetrically disposed in outside longitudinal girder 4, and the height of boss 13 is concordant with the height of intermediate beam 3.
As shown in Figure 2, as a kind of typical specific embodiment of the present invention, the equal horizontal positioned of all of girder construction, by the girder 4 that quantity is two, be parallel to each other, direction be transversely separately positioned on base assembly 16 foremost and rearmost end, and opening is outwardly, places the most dorsad.Again by girder 4 that quantity is three, be parallel to each other, direction is in being longitudinally disposed between two horizontally-parallel girders 4, with horizontal girder 4 vertical connection, the girder 4 of a longitudinal direction is respectively placed at horizontal girder 4 two ends and middle part, is in girder 4 opening of two longitudinal directions of high order end and low order end inwardly.Then by the crossbeam 5 that quantity is four, direction in laterally, line up an array and be placed between the girder 4 of three longitudinal directions and both sides, intersect vertically with longitudinal girder 4, position is in the portion rearward of base assembly 16.Then by the intermediate beam 3 that quantity is some, direction be uniform parallel horizontal, mutual be placed on longitudinal girder 4, and in the region that constitutes of the horizontal girder 4 in front end and crossbeam 5, intermediate beam 3 intersects vertically with the girder 4 of longitudinal direction.Then by the cant beam 7 that quantity is four, the outermost end of crossbeam 5 outside horizontal girder 4 one end and longitudinal girder 4 is connected end to end.Two boss 13 are positioned symmetrically in outside longitudinal girder 4, and concordant with the height of intermediate beam 3.Damping device installing hole 12 is arranged in all of intermediate beam 3 and boss 13 equably in array-like, and on the horizontal girder 4 in front end.When the test article that test specimen 6 is seriation, the product of different bottom mounting apertures can be fixed by the installation site of regulation damping device 2.
Back element 17 farther includes: some root bottom parts are fixed on girder 4 and crossbeam 5 and are cross-linked the column 8 at place；Being arranged on the back timber 10 at column 8 top, back timber 10 can install damping device 2, and these damping devices 2 are connected with the installing hole of test specimen 6 upper back；The some left and right sides being arranged on back timber 10 and base assembly 16, and the diagonal brace 9 between back, use the left and right sides and the diagonal brace 9 skewed horizontal load posture in standing (qigong) post 8 at back and back timber 10.The column 8 of more than two, intersects vertically with crossbeam 5 and longitudinal girder 4 along vertical respectively in the direction of base assembly 16.Back timber 10 is placed across the top of base assembly 16, the top of column 8, and the back of back timber 10 connects with the end of column 8, and the side of back timber 10 is concordant with the side of column 8.Diagonal brace 9 one end of more than three is connected to the junction of column 8 and back timber 10, and the other end is connected to the junction of the horizontal girder 4 of longitudinal girder 4 and rearmost end.One end of other two diagonal braces 9 is connected to the junction of crossbeam 5 and cant beam 7, and the other end is connected to two root posts 8 of the left and right sides and the junction at back timber 10 two ends.
As shown in Figure 3, as a kind of typical specific embodiment of the present invention, by the column 8 that quantity is three, along vertical direction, intersect vertically with crossbeam 5 and longitudinal girder 4.Then a piece back timber 10 is placed across the top of base assembly 16, the top of three root posts 8, and the back side of back timber 10 is affixed with the end face of column 8, and side is concordant with the side of column 8.Three diagonal brace 9 one end are then connected to the joint of three root posts 8 and back timber 10, and the other end connects the intersection of the girder 4 of three longitudinal directions and the girder 4 of the horizontal of rearmost end.Again by one end of two diagonal braces 9 connecting cross beam 5 and the junction of cant beam 7 respectively, together with two root posts 8 of the other end and both sides meet at the two ends of back timber 10.Damping device installing hole 12 is arranged on back timber 10 equidistantly, to adapt to the back setting height(from bottom) of different test specimen 6.
As shown in accompanying drawing 2 and accompanying drawing 3, at intermediate beam 3 and boss 13, and be positioned on base assembly 16 horizontal girder 4 foremost and be provided with damping device installing hole 12 equably in array-like, can make vibration test fixture that the test specimen 6 of different size differing heights is installed, i.e. it is applicable to the product of seriation difference mounting hole site, accomplishes the versatility of vibration test fixture frock.Being provided with damping device installing hole 12 on back timber 10 equally spacedly, the position of damping device installing hole 12 is adapted to the back setting height(from bottom) of test specimen 6.With on the damping device installing hole 12 of the back timber 10 of back element 17 on the damping device installing hole 12 of the crossbeam 5 that damping device 2 is arranged on base assembly 16, it is attached by bolt with bottom and the back mounting hole site of test specimen 6.
As shown in Figure 4, the bottom of base assembly 16 is provided with installing hole 11, and installing hole 11 is equally arranged in the bottom of intermediate beam 3, girder 4, crossbeam 5 and cant beam 7.Intermediate beam 3, longitudinal girder 4, crossbeam 5 between longitudinal girder 4, and the installing hole 11 being positioned on the horizontal girder 4 of base assembly 16 front portion is distributed the most intensive, and cant beam 7, be positioned at the crossbeam 5 outside longitudinal girder 4 of the rectangular frame structure left and right sides, and the installing hole 11 being positioned on the horizontal girder 4 at base assembly 16 rear portion is distributed the most loose.
As shown in Figure 5, general frame 1 uses integral channel steel welding construction, girder construction including intermediate beam 3, girder 4, crossbeam 5, cant beam 7 and back timber 10 all uses the C-shaped channel steel 15 being internally provided with reinforcement 14 to process, reinforcement 14 scarfweld is at the inner surface of C-shaped channel steel 15, to increase the structural strength of girder 4.Reinforcement 14 and boss 13 are also processed by steel plate.The transverse width of base assembly 16, not less than the transverse width of test specimen 6, uses bolt, nut mode to be connected between base assembly 16, back element 17 and damping device 2, the bottom of vibration test fixture is arranged on the table top of vibration mechine.
The vibration test fixture that the above-mentioned specific embodiment of the present invention describes uses channel-section steel and a general frame structure of Plate Welding, in this general frame structure, the structure being open type front, left and right, and be mainly made up of bottom assembly welding structure and back support structure.The form all using bolt and nut to connect in bottom assembly welding structure and back support structure is installed with damping device 2.Test specimen 6 can be connected at the mounting interface of bottom with upper back with damping device 2, and the bottom of vibration test fixture frock is arranged on the table top of vibration mechine.Base assemblies 16 is mainly taken out main rectangular frame structure by girder 4, then reinforced in centre by intermediate beam 3.Transverse width bottom vibration test fixture needs the transverse width not less than test specimen 6, fixes, by before and after cant beam 7, the crossbeam 5 outwards extended in left and right.Column 8 intersects two-by-two with longitudinal girder 4 and crossbeam 5, on the back timber 10 supported by column 8, damping device 2 can be installed, damping device 2 is connected with the installing hole of test specimen 6 upper back, and uses the left and right sides and diagonal brace 9 skewed horizontal load posture in standing (qigong) post 8 behind and back timber 10.So vibration test fixture frock of design has the plurality of advantages such as intensity high, rigidity big, simple in construction, small volume, resonance point less, highly versatile, saving material.
The specific embodiment of a kind of above-mentioned vibration test fixture installation method, comprises the following steps:
The bottom of vibration test fixture is arranged on the table top of vibration mechine；
Test specimen 6 is arranged in the general frame 1 being made up of base assembly 16 and back element 17, is fixedly connected by damping device 2 between test specimen 6 and base assembly 16, back element 17.
When the footprint of vibration mechine is more than the bottom area certain value of vibration test fixture, by being distributed in, the installing hole 11 bottom base assembly 16 is fixing with the table top of vibration mechine to be connected.
When the footprint of vibration mechine is less than the bottom area certain value of vibration test fixture, the such as vibration mechine table top of dotted line size shown in accompanying drawing 4, i.e. have only to be placed on the table top of vibration mechine the position of dotted rectangle as of figure 4, by intermediate beam 3, longitudinal girder 4, crossbeam 5 between longitudinal girder 4, and it is positioned on the horizontal girder 4 of base assembly 16 front portion and is distributed the most intensive installing hole 11 and fixes with the table top of vibration mechine and be connected.Being connected by the table top of the Kong Weiyu vibration mechine of close quarters, when carrying out vibration test, vibration test fixture frock can have bigger resonant frequency and rigidity.
When the mounting hole site of test specimen 6 or vibration mechine is different from the adaptive type of some standards, vibration test fixture can be reequiped in subsequent process separately again and is welded with some mounting rails.
By implementing vibration test fixture and the installation method thereof that the specific embodiment of the invention describes, it is possible to reach techniques below effect:
(1) vibration test fixture that the specific embodiment of the invention describes uses the general frame girder structure of open type, relative to the clamp fixture structure of comprehensive cube packaging type, there is the advantages such as structural rigidity is good, volume is little, lightweight, intensity is high, easy to use；
(2) vibration test fixture described by the application specific embodiment of the invention, installing and in process of the test, the number of parts that vibration passes through is less, therefore resonance point is less, entirety has higher resonant frequency, it is adaptable to the different mounting hole site of tandem product, has the versatility that can install multiple different size of test specimen, it is highly suitable for vibration mechine table top too small, and causes the situation that fixture and test specimen spread from the table；
(3) vibration test fixture that the specific embodiment of the invention describes is provided with damping device in bottom and back; test specimen can be protected in horizontal and vertical both direction protected from the impact of vibration test energy, the vibrational energy that vibration mechine needs can be reduced simultaneously.
In this specification, each embodiment uses the mode gone forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, and between each embodiment, identical similar portion sees mutually.
The above, be only presently preferred embodiments of the present invention, and the present invention not makees any pro forma restriction.Although the present invention discloses as above with preferred embodiment, but is not limited to the present invention.Any those of ordinary skill in the art, in the case of without departing from the spirit of the present invention and technical scheme, technical solution of the present invention is made many possible variations and modification by the method and the technology contents that all may utilize the disclosure above, or is revised as the Equivalent embodiments of equivalent variations.Therefore, every content without departing from technical solution of the present invention, to any simple modification made for any of the above embodiments, equivalent, equivalence change and modify according to the technical spirit of the present invention, all still fall within the range of technical solution of the present invention protection.
Claims (14)
1. a vibration test fixture, it is characterised in that: including that general frame (1), test specimen (6) are arranged in described general frame (1), described general frame (1) uses and is open girder structure on top, front portion, left part and right part four direction；Described general frame (1) includes the base assembly (16) providing bottom support for described test specimen (6), and is arranged on described base assembly (16) top, provides the back element (17) of back support for described test specimen (6).
Vibration test fixture the most according to claim 1, it is characterized in that: described vibration test fixture also includes the damping device (2) being arranged in described base assembly (16), back element (17), described test specimen (6) by described damping device (2) and described base assembly (16), back element (17) is fixing is connected.
Vibration test fixture the most according to claim 2, it is characterized in that: described base assembly (16) includes intermediate beam (3), girder (4), crossbeam (5) and cant beam (7), rectangular frame structure crisscross in horizontal plane is formed by some described girders (4), some described intermediate beams (3) are arranged between described girder (4), for reinforcing described rectangular frame structure；Described crossbeam (5) runs through, with the direction being parallel to horizontal girder (4), the rectangular frame structure being made up of described girder (4), and extends outside described rectangular frame structure left and right two along its length；Described cant beam (7) is arranged between the end of described girder (4) and the end of described crossbeam (5), for being fixed the crossbeam (5) extended outside described rectangular frame structure left and right two.
4. according to the vibration test fixture described in Claims 2 or 3, it is characterised in that described back element (17) including:
Some root bottom parts are fixed on described girder (4) and crossbeam (5) and are cross-linked the column (8) at place；
It is arranged on the back timber (10) at described column (8) top；
The some left and right sides being arranged on described back timber (10) and described base assembly (16), and the diagonal brace (9) between back.
Vibration test fixture the most according to claim 4, it is characterized in that: described girder (4) is made up of channel-section steel, two described girders (4) are parallel to each other, be horizontally installed on described base assembly (16) foremost and rearmost end, and opening is outwardly, places the most dorsad；The described girder (4) of other more than two is parallel to each other, is longitudinally disposed between two horizontal, parallel girders (4), and with horizontal girder (4) vertical connection, lay respectively at girder (4) opening of two longitudinal directions of high order end and low order end inwardly；Some described crossbeams (5) are laterally arranged in string between longitudinal girder (4) and both sides, intersect vertically with longitudinal girder (4), and be positioned at the rear end of described base assembly (16), and the intersection of described base assembly (16) place plane and described back element (17) place plane；Some intermediate beams (3) in parallel to each other, be placed across in the region that is made up of longitudinal girder (4), the horizontal girder (4) that is positioned at front end, and crossbeam (5), described intermediate beam (3) intersects vertically with the girder (4) of longitudinal direction；The end of four cant beams (7) respectively with described base assembly (16) before and after horizontal girder (4) end, both sides, and the end of described crossbeam (5) is connected；Described base assembly (16) also includes two boss (13) being symmetrically disposed in described longitudinal girder (4) outside, and the height of described boss (13) is concordant with the height of described intermediate beam (3).
Vibration test fixture the most according to claim 5, it is characterised in that: the described column (8) of more than two, intersects vertically with described crossbeam (5) and longitudinal girder (4) along vertical respectively in the direction of described base assembly (16)；Described back timber (10) is placed across the top of described base assembly (16), the top of described column (8), the back of described back timber (10) connects with the end of described column (8), and the side of described back timber (10) is concordant with the side of described column (8)；Diagonal brace (9) one end of more than three is connected to the junction of described column (8) and described back timber (10), and the other end is connected to the junction of the horizontal girder (4) of longitudinal girder (4) and rearmost end；One end of other two diagonal braces (9) is connected to the junction of described crossbeam (5) and described cant beam (7), and the other end is connected to two root posts (8) of the left and right sides and the junction at described back timber (10) two ends.
7. according to the vibration test fixture described in claim 5 or 6, it is characterized in that: at described intermediate beam (3) and boss (13), and be positioned on described base assembly (16) horizontal girder (4) foremost and be provided with damping device installing hole (12) equably in array-like.
Vibration test fixture the most according to claim 7, it is characterized in that: be provided with damping device installing hole (12) on described back timber (10) equally spacedly, the position of described damping device installing hole (12) is adapted to the back setting height(from bottom) of described test specimen (6).
9. according to the vibration test fixture according to any one of claim 4,5,6,8, it is characterized in that: the bottom of described base assembly (16) is provided with installing hole (11), described installing hole (11) is equally arranged in the bottom of described intermediate beam (3), girder (4), crossbeam (5) and cant beam (7)；Described intermediate beam (3), longitudinal girder (4), the crossbeam (5) that is positioned between longitudinal girder (4), and the installing hole (11) being positioned on the horizontal girder (4) that described base assembly (16) is anterior is relative to described cant beam (7), the crossbeam (5) in longitudinal girder (4) outside being positioned at the described rectangular frame structure left and right sides, and horizontal girder (4) distribution being positioned at described base assembly (16) rear portion is the most intensive.
Vibration test fixture the most according to claim 9, it is characterized in that: described general frame (1) uses integral channel steel welding construction, described intermediate beam (3), girder (4), crossbeam (5), cant beam (7) and back timber (10) all use the C-shaped channel steel (15) being internally provided with reinforcement (14), described reinforcement (14) scarfweld inner surface in described C-shaped channel steel (15).
11. according to the vibration test fixture according to any one of claim 1,2,4,5,6,8,10, it is characterized in that: the transverse width of described base assembly (16) is not less than the transverse width of described test specimen (6), using bolt, nut mode to be connected between described base assembly (16), back element (17) and described damping device (2), the bottom of described vibration test fixture is arranged on the table top of vibration mechine.
The installation method of 12. 1 kinds of vibration test fixtures as claimed in claim 9, it is characterised in that comprise the following steps:
The bottom of described vibration test fixture is arranged on the table top of vibration mechine；
Test specimen (6) is arranged in the general frame (1) being made up of base assembly (16) and back element (17), is fixedly connected by described damping device (2) between described test specimen (6) and described base assembly (16), back element (17).
13. methods according to claim 12, it is characterized in that: when the footprint of described vibration mechine is more than the bottom area certain value of described vibration test fixture, the table top of installing hole (11) with described vibration mechine by being distributed in described base assembly (16) bottom is fixing to be connected.
14. methods according to claim 12, it is characterized in that: when the footprint of described vibration mechine is less than the bottom area certain value of described vibration test fixture, by described intermediate beam (3), longitudinal girder (4), the crossbeam (5) that is positioned between longitudinal girder (4), and it is positioned at the most intensive installing hole (11) of the upper distribution of the anterior horizontal girder (4) of described base assembly (16) and fixes with the table top of described vibration mechine and be connected.
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| CN108411923A (en) * | 2018-03-22 | 2018-08-17 | 福州大学 | A kind of array earthquake simulation shaking table protective device and its construction method |
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| CN105987800B (en) | 2018-09-07 |
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