CN105588711A - Push rod bolt test apparatus - Google Patents
Push rod bolt test apparatus Download PDFInfo
- Publication number
- CN105588711A CN105588711A CN201511018033.XA CN201511018033A CN105588711A CN 105588711 A CN105588711 A CN 105588711A CN 201511018033 A CN201511018033 A CN 201511018033A CN 105588711 A CN105588711 A CN 105588711A
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- test
- sleeve
- distance rod
- rod bolt
- hole
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a push rod bolt test apparatus. The push rod bolt test apparatus comprises a test sleeve, a test backing plate, two anti-rotation shift rods, and fixing nuts, the two anti-rotation shift rods are arranged on the test sleeve via the fixing nuts, the test backing plate is arranged on the two anti-rotation shift rods, the upper side of the test sleeve is provided with an opening communicated with an inner through hole, and the anti-rotation shift rods can be or can also not be provided with a plurality of test backing plates. According to the push rod bolt test apparatus, test backing plates with different quantities can be installed according to the length of a tested push rod bolt so that the apparatus can adapt to the tested bolts with different lengths.
Description
Technical field
The invention belongs to the mechanical design field of non-standard component, relate in particular to a kind of distance rod bolt that detectsThe experimental rig of pretightning force.
Background technology
Equalizing type of suspension is widely used on heavy-duty car, and it is particularly heavy special that it has improved heavy-duty carThe ground connection property of automobile tire, has ensured the harmony of load between two bridges under various operating modes or many bridges. ?During two bridge equalizing type of suspension light plate spring handle load are averagely allocated to, back axle, it can only transmit vertical forceAnd side force, and can not transmitting tractive power and brake force and relevant moment, therefore in, on back axle, fillThere are upper thrust rod and lower thrust rod, are used for transmitting longitudinal loading and moment. Along with the reality of domestic axle load methodImpose and the implementation of " weight metering charging ", cargo truck is to the direction of heavy-duty, van-type, tractionizationDevelopment.
At present, cargo vehicle is mainly by increasing vehicle bridge (axle) quantity or vehicle bridge (axle) bearing capacityImprove carrying capacity, its guiding mechanism distance rod is one of three critical components of equalizing suspension system. Push awayAnother effect that power bar is play in equalizing type of suspension is to prevent bridge displacement, and general straight distance rod can only preventDisplacement before and after middle back axle, and V-arrangement distance rod is except displacement in can preventing, before and after back axle, all rightPrevent left and right sidesing shifting because in the time of automobile turning, in, back axle may produce the problem of left and right sidesing shifting,Cause leaf spring and tire to produce friction, when serious, can cause the tire severe thing that early mill is even blown outTherefore.
Anti-sway bar, we are also called sway bar it, are the complementary units of one in suspension systemPart. Its Main Function is to prevent that vehicle body from too large horizontal inclination occurring in the time turning, and it is unnecessary to causeTraffic accident, laterally topple and improve vapour so the main purpose of anti-sway bar prevents automobile exactlyThe balanced type of car. Anti-sway bar is the torsion-bar spring supporting with spring steel, and its profile is " U "Shape, the horizontal back axle at automobile. Thrust shaft middle part is hinged with sleeve and vehicle frame, the two ends of distance rodRespectively to be fixed on the suspension of left and right. In the time that vehicle body is in vertical motion, both sides Suspension Deformation phaseWith, anti-sway bar is inoperative. In the time of body roll, both sides suspension is beated inconsistent, laterally pushes awayPower bar will twist, and the elastic force of shaft becomes the resistance of automobile roll, finally plays lateral stabilityEffect.
In sum, distance rod both can transmit longitudinal force, bore the moment of reaction that brake force causes,Can prevent that again vehicle from toppling in turning process, so its role in suspension is veryImportant. Because it is connected by parts such as distance rod bolt and equalizing type of suspension, vehicle frame and vehicle bridge, instituteCan directly have influence on distance rod normally work with its assembly quality, plays the effect of stablizing vehicle body.
In recent years along with the progress of material science and the improvement of processing technology level, the machine of distance rod boltTool performance has had obvious improvement, and conventional mounting method can not have been given full play to its potential mechanicalnessEnergy. Therefore, need to test the moment of torsion of distance rod bolt and pretightning force, to understand its mechanicalnessEnergy. But, lack at present the distance rod bolt equipment that stressing conditions detects in pretension process,So can not effectively detect the stress of distance rod bolt, thereby can not effectively improveIt assembles stress, promotes its reliability, and this is very disadvantageous to improving assembly quality.
Summary of the invention
For addressing the above problem, the invention provides one and can conveniently detect distance rod bolt and installingThe experimental rig of suffered pretightning force in journey.
The technical solution used in the present invention is as follows:
A kind of distance rod bolt experimental rig, comprising: test sleeve, test backing plate, two anti-rotation shelvesBar and hold-down nut;
Described test sleeve, main body is cylinder, its center is drilled with an interior bone, pushes away for wearingPower bar bolt, at the two ends of described test sleeve, stretches out respectively an ear, described ear to both sidesOn have through hole, described anti-rotation lever is arranged in ear through hole, there is an opening described test sleeve topConnect with its interior bone, and can be by the wire of foil gauge;
Described two anti-rotation levers, on test sleeve, are multidiameter shape by hold-down nut, byTwo sections of cylinders composition, and diameter difference, thin one section of ear through hole that penetrates described test sleeve both sidesIn, its end is also designed with screw thread simultaneously, can be arranged on described test sleeve with hold-down nut;Thick one section for described test backing plate is installed, and described anti-rotation lever is through described test backing plate both sidesThrough hole, and prevent experimental rig rotation in process of the test;
Described test backing plate is arranged on two anti-rotation levers by two side through hole, and main body is annularShape, both sides are extended with respectively ear, respectively have a through hole on described ear, and described through hole is arranged on twoOn thick one section of individual anti-rotation lever.
Preferably, also comprise two protection pads, its profile is toroidal, described in being arranged on respectivelyOn the both sides end face of test sleeve or test backing plate.
Multiple test backing plates are installed on described anti-rotation lever.
Described anti-rotation lever is arranged on the both sides of tightening machine hold-down nut sleeve.
Described test sleeve is identical with the material by distance rod with the material of test backing plate.
Distance rod bolt experimental rig of the present invention compared with prior art, has the following advantages:Owing to can, according to different automobile types, testing the quantity of backing plate by adjustment, to adapt to the thrust of different lengthBar bolt; Test on sleeve simultaneously and be processed with opening, can facilitate checkout equipment to pass through respective sensor,Gather the elongation of thrust bolt in rundown process, and then obtain the variation of the suffered pretightning force of bolt.
The present invention is suitable for all types distance rod, because they are all with bolts, and the thrust of testThe quality of connection problem of bolt between bar and support, so little with the shape relation of distance rod.
Brief description of the drawings
Fig. 1 is the structural representation of distance rod bolt experimental rig of the present invention.
Fig. 2 is the cutaway view of distance rod bolt experimental rig of the present invention.
Fig. 3 is the schematic diagram outside backing plate of testing of invention.
Detailed description of the invention
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with thisAccompanying drawing in inventive embodiments, retouches clearly and completely to the technical scheme in the embodiment of the present inventionState, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work prerequisiteLower obtained every other embodiment, belongs to the scope of protection of the invention.
Fig. 1 is the structural representation of distance rod bolt experimental rig of the present invention.
As shown in Figure 1, distance rod bolt experimental rig of the present invention is for utilizing coherent detection instrumentWhen distance rod bolt is carried out to performance test, clamping distance rod bolt, the examination during as detection testTest platform, can comprise test sleeve 2, test backing plate 4, two anti-rotation levers 7 and hold-down nuts 1;Described two anti-rotation levers 7 are arranged on test sleeve 2 by hold-down nut 1; Described test backing plate4 are arranged on two anti-rotation levers 7.
Described test sleeve 2 main bodys are cylinder, and its center is drilled with an interior bone, pushes away for wearingPower bar bolt, at the two ends of described test sleeve, stretches out respectively an ear, described ear to both sidesOn have through hole, described anti-rotation lever is arranged in ear through hole, there is an opening described test sleeve topConnect with its interior bone, and can be by the wire of foil gauge;
Described two anti-rotation levers 7 are arranged on the both sides of tightening machine hold-down nut sleeve, by fixing spiral shellFemale is multidiameter shape on test sleeve, is made up of, and diameter difference two sections of cylinders, thin by oneSection penetrates in the ear through hole of described test sleeve both sides, and its end is also designed with screw thread simultaneously, canBe arranged on described test sleeve with hold-down nut; Thick one section for installing described test backing plate, instituteState anti-rotation lever through the through hole of described test backing plate both sides, can the multiple test backing plates of once mounting, andPrevent experimental rig rotation in process of the test;
Described test backing plate 4 main bodys are toroidal, and both sides are extended with respectively ear, on described earRespectively have a through hole, described through hole is arranged on thick one section of two anti-rotation levers.
In the present invention, also comprise two protection pads 5, be arranged on respectively described test sleeve 2On the end face of both sides or test backing plate on, its profile is toroidal, similar with plain nut pad profile,Can effectively protect protection sleeve and test backing plate end face to avoid the wearing and tearing of tested distance rod bolt or nut,Test sleeve and test backing plate just can be reused like this, owing to all will more renew in the time testing at every turnProtection pad, so accuracy that can guarantee test. And protection pad 5 is in each rundown processAfter all need to change. Simultaneously because protection pad 5 is through corresponding processing, its roughness and tableSurface hardness is all more consistent, thereby makes with batch uniformity of bolt and nut acquisition data better, rightThe data that obtain in different batches bolt and nut have comparativity.
In the present invention, described test sleeve 2 tops are processed with opening 3, and pass through with its interior boneLogical. Distance rod bolt penetrates after test sleeve, is just exposed at opening portion, can be comparatively squareJust stickup foil gauge, carries out tools for bolts ' pretension force measurement. Distance rod spiral shell is measured in acting as of foil gaugeThe deflection that be elongated of bolt after stressed, the elastic modelling quantity that this deflection is multiplied by material can obtain spiral shellThe suffered stress value of bolt. It is a kind of method of conventional measurement part stress.
In the present invention, described 7 last times of anti-rotation lever can be installed multiple test backing plates 4, also can be notInstall. Adopt test backing plate main cause be, tested distance rod bolt length need not, and becomeChange scope is larger, in order to make a test sleeve can adapt to the distance rod bolt of different length, soCorrespondence has designed the test backing plate of multi-disc different-thickness. The end surface shape of these backing plates is in full accord, noOnly be thickness difference with part. When test, according to the difference of bolt length, by the pad of different-thicknessSheet combine add to test sleeve a side, total interpolation thickness with nut can normally tighten intoAccurate. In order to make it easy for installation, ensure in rundown process simultaneously, it can be along with bolt or nutRotate, so its monosymmetric aperture, ear through hole 8 is through on anti-rotation lever 7. WhereinThe macropore of the heart, interior bone 9 is used for by tested bolt.
In the present invention, described anti-rotation lever 7 is arranged on the both sides of tightening machine hold-down nut sleeve 6.Its end is processed with nut, after being installed on test sleeve 2, is undertaken fastening by nut 1.
In the present invention, the material of described test sleeve and test backing plate is selected according to test requirements documentSelect. Taking the material of bolt installation site connected piece as selecting foundation specifically. The material of selectingElastic modelling quantity should be consistent or close with hardness. Due to the manufactured materials difference of different distance rods, soThe material require of test sleeve is consistent with actual parts, and the selection of test pad plate material is also the same, thanAs distance rod cast steel, test so sleeve or test backing plate and also select cast steel.
When work, two anti-rotation levers 7 are distinguished framves in the both sides of tightening machine hold-down nut sleeve 6, whenWhen bolt screwing machine drives bolt rotation, anti-rotation lever 7 can prop up the support arm in tightening machine, therebyPrevent from testing sleeve 2 transfers; The head of tested distance rod bolt is arranged on tightening machine hold-down nut coverThe inner side of cylinder 6, is pressed on protection pad 5 simultaneously, thereby avoids and test sleeve 2 or test padThe end face of plate 4 directly contacts, and also just can avoid its surface to be worn. Checkout equipment can be by examinationThe opening 3 of testing on sleeve 2 detects the elongation of distance rod bolt in rundown process, and then obtains boltPretightning force. When test, on distance rod bolt, post foil gauge, can detect bolt by relevant device shouldVariable.
State after the normal assembling of experimental rig of the present invention and tested distance rod bolt is like this. On tested distance rod bolt, be installed with successively protection pad, test backing plate, test sleeve, anotherProtection pad and test nut. On distance rod bolt, post foil gauge, the wire of foil gauge is by trying simultaneouslyThe opening of testing on sleeve is drawn, and the other end of wire is connected on deformeter.
When test: at test sleeve one end one or more pieces test backing plates (also can not pad) of pad, pad is manyFew sheet test backing plate is determined by the length difference between tested distance rod bolt and test sleeve. Length difference is largerThe sheet number of pad is more, and vice versa. Reason is that the reach of distance rod bolt end is limited,If itself and the length difference of test between sleeve are too large, can make nut in the time being screwed to the screw thread end, still notCan compress each part being arranged between itself and bolt head, distance rod bolt does not stress like this. OnlyThere is the normal mounting of the test backing plate guarantee distance rod bolts and nuts of selecting suitable quantity, and push awayPower bar bolt head and nut can step up on it each part of installing, as protection pad, test backing plate andTest sleeve. Now distance rod bolt is in stress.
Concrete process of the test is: by the distance rod bolt of above-mentioned normal mounting, test nut and examinationExperiment device is put on bolt screwing machine together, and the anti-rotation lever of experimental rig both sides pins tightening machine simultaneouslyHold-down nut sleeve. Meanwhile distance rod bolt head is also enclosed within tightening machine hold-down nut sleeve, anotherThe test nut of one end is enclosed within on tightening machine rotating shaft.
After tightening machine starts, tightening machine is rotated test nut, and now distance rod bolt is stubborn owing to being enclosed withinOn tight machine hold-down nut sleeve, so can not rotate. Relative motion meeting between bolts and nuts compresses peaceEach part in dress experimental rig thereon. After each part is compacted, can produce reaction force, this powerCan reaction on distance rod bolt, can be elongated after bolt strained, drive and paste thereon simultaneouslyFoil gauge elongates together, and foil gauge amount of elongation can be detected by deformeter, can calculate thus spiral shellThe size of the suffered stress of bolt.
The suffered stress of part equals strain (foil gauge amount of elongation) takes advantage of the elastic modelling quantity of material, for steelMaterial elastic modelling quantity can be thought constant. (method that adopts foil gauge to measure stress is that mechanical field is conventionalMethod, elastic modelling quantity also can be by finding easily in mechanical design handbook or the book of teaching. )
The main purpose of the designed experimental rig of the present invention is: measurement is tightened in and applies different screw-down torquesTime, the stress that distance rod bolt is suffered. Stress too conference is broken bolt; The too little meeting of stress makes boltIn use there is loosening situation. Testing us by this just can have a clear understanding of tightening machine and establishWhether fixed screw-down torque is suitable.
To sum up, distance rod bolt experimental rig of the present invention can utilize tightening on production line easilyEquipment carries out tightening with pretightning force of all size distance rod bolt and measures test, by adjusting test padThe quantity of plate 4 can adapt to the distance rod bolt of different length, thus improve experimental work convenience andAccuracy.
Finally it should be noted that: above embodiment is only in order to technical scheme of the present invention to be described, but not rightIts restriction; Although the present invention is had been described in detail with reference to previous embodiment, this area commonTechnical staff is to be understood that: its technical scheme that still can record aforementioned each embodiment is repaiiedChange, or part technical characterictic is wherein equal to replacement; And these amendments or replacement, noMake the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (5)
1. a distance rod bolt experimental rig, is characterized in that, comprising: test sleeve, test padPlate, two anti-rotation levers and hold-down nut,
Described test sleeve, main body is cylinder, its center is drilled with an interior bone, pushes away for wearingPower bar bolt, at the two ends of described test sleeve, stretches out respectively an ear, described ear to both sidesOn have through hole, described anti-rotation lever is arranged in ear through hole, there is an opening described test sleeve topConnect with its interior bone, and can be by the wire of foil gauge;
Described two anti-rotation levers, on test sleeve, are multidiameter shape by hold-down nut, byTwo sections of cylinders composition, and diameter difference, thin one section of ear through hole that penetrates described test sleeve both sidesIn, its end is also designed with screw thread simultaneously, can be arranged on described test sleeve with hold-down nut;Thick one section for described test backing plate is installed, and described anti-rotation lever is through described test backing plate both sidesThrough hole, and prevent experimental rig rotation in process of the test;
Described test backing plate is arranged on two anti-rotation levers by two side through hole, and main body is annularShape, both sides are extended with respectively ear, respectively have a through hole on described ear, and described through hole is arranged on twoOn thick one section of individual anti-rotation lever.
2. distance rod bolt experimental rig according to claim 1, is characterized in that, also comprisesTwo protection pads, its profile is toroidal, is arranged on respectively the both sides end face of described test sleeveOr on test backing plate.
3. distance rod bolt experimental rig according to claim 1, is characterized in that, described anti-Turn multiple test backing plates are installed on lever.
4. distance rod bolt experimental rig according to claim 1, is characterized in that, described anti-Turn the both sides that lever is arranged on tightening machine hold-down nut sleeve.
5. distance rod bolt experimental rig according to claim 1, is characterized in that described examinationTest sleeve identical with the material by distance rod with the material of test backing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511018033.XA CN105588711B (en) | 2015-12-30 | 2015-12-30 | Distance rod bolt experimental rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511018033.XA CN105588711B (en) | 2015-12-30 | 2015-12-30 | Distance rod bolt experimental rig |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105588711A true CN105588711A (en) | 2016-05-18 |
| CN105588711B CN105588711B (en) | 2017-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511018033.XA Active CN105588711B (en) | 2015-12-30 | 2015-12-30 | Distance rod bolt experimental rig |
Country Status (1)
| Country | Link |
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| CN (1) | CN105588711B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521382A (en) * | 2020-04-29 | 2020-08-11 | 深圳亚太航空技术有限公司 | High Precision Fatigue Test Fixture |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55151238A (en) * | 1979-05-16 | 1980-11-25 | Shigeru Onoe | Inspecting machine for nut screw |
| CN2888438Y (en) * | 2006-03-18 | 2007-04-11 | 昆山施耐特机械有限公司 | Bolt strength detector |
| CN201107184Y (en) * | 2007-11-15 | 2008-08-27 | 东风汽车有限公司 | Automobile V-shaped thrust rod assembly simulation test device |
| CN202329998U (en) * | 2011-11-16 | 2012-07-11 | 大连康展机电工程有限公司 | Bolt comprehensive performance measuring machine |
| CN204594675U (en) * | 2015-04-23 | 2015-08-26 | 福建田中机械科技股份有限公司 | Automobile double end distance rod fatigue tester |
-
2015
- 2015-12-30 CN CN201511018033.XA patent/CN105588711B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55151238A (en) * | 1979-05-16 | 1980-11-25 | Shigeru Onoe | Inspecting machine for nut screw |
| CN2888438Y (en) * | 2006-03-18 | 2007-04-11 | 昆山施耐特机械有限公司 | Bolt strength detector |
| CN201107184Y (en) * | 2007-11-15 | 2008-08-27 | 东风汽车有限公司 | Automobile V-shaped thrust rod assembly simulation test device |
| CN202329998U (en) * | 2011-11-16 | 2012-07-11 | 大连康展机电工程有限公司 | Bolt comprehensive performance measuring machine |
| CN204594675U (en) * | 2015-04-23 | 2015-08-26 | 福建田中机械科技股份有限公司 | Automobile double end distance rod fatigue tester |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521382A (en) * | 2020-04-29 | 2020-08-11 | 深圳亚太航空技术有限公司 | High Precision Fatigue Test Fixture |
| CN111521382B (en) * | 2020-04-29 | 2025-07-01 | 深圳亚太航空技术股份有限公司 | High-precision fatigue test tooling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105588711B (en) | 2017-11-14 |
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Address after: 130012 No. 1, xinhongqi street, automobile economic and Technological Development Zone, Changchun City, Jilin Province Patentee after: China Faw Co.,Ltd. Country or region after: China Address before: 130000 2259 Dongfeng Street, Xinxin economic and Technological Development Zone, Changchun, Jilin Patentee before: China Faw Co.,Ltd. Country or region before: China |
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