CN110864895B - Torsion bar spring pre-torsion stress rapid detection system - Google Patents
Torsion bar spring pre-torsion stress rapid detection system Download PDFInfo
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- CN110864895B CN110864895B CN201911320928.7A CN201911320928A CN110864895B CN 110864895 B CN110864895 B CN 110864895B CN 201911320928 A CN201911320928 A CN 201911320928A CN 110864895 B CN110864895 B CN 110864895B
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- sliding rail
- torsion bar
- bar spring
- spline
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- 238000001514 detection method Methods 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 238000012546 transfer Methods 0.000 claims description 22
- 238000009434 installation Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 230000005483 Hooke's law Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012031 short term test Methods 0.000 description 1
Classifications
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0042—Force sensors associated with force applying means applying a torque
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a torsion bar spring pre-torsion stress rapid detection system which comprises a pre-torsion tool frame, a pre-torsion force bar, a spline stress transmission bar, an omnidirectional strain gauge, a computer, a sliding rail and a sliding rail seat, wherein the torsion bar spring is arranged on the pre-torsion tool frame and is connected with the spline stress transmission bar through a spline, the omnidirectional strain gauge is stuck on the spline stress transmission bar and is electrically connected with a motor, the spline stress transmission bar is connected with the sliding rail through a flange, the sliding rail is movably arranged on the sliding rail seat, the sliding rail seat is arranged on one side of the pre-torsion tool frame, and the torsion bar spring is fixedly connected with the pre-torsion force bar. The system has the advantages of simple structure, easy operation, high precision and high efficiency, can rapidly and highly accurately measure the pre-torsion stress of torsion bar springs with different materials and diameters, obtains the pre-torsion stress value of the torsion bar springs, estimates the error and the confidence coefficient through a computer system, can meet the requirement of an automatic production line of the torsion bar springs, and can simultaneously meet the requirement of small-batch or single-piece production.
Description
Technical Field
The invention relates to the fields of engineering mechanics, computers and electronic measurement, in particular to a torsion bar spring pre-torsion stress rapid detection system.
Background
With the use of a large number of various transportation means and the use of a large number of engineering machines, the demands and demands for various types of torsion bar springs are greatly increased, the pre-twisting of the torsion bar springs is a processing procedure which has a great influence on the spring performance, the processing efficiency of the torsion bar springs is directly determined, and the pre-twisting stress level applied to the torsion bar springs determines the performance of the torsion bar springs, so that a simple, easy-to-operate, high-precision and high-efficiency rapid torsion bar pre-twisting stress measuring device is required to meet the demands of the torsion bar spring pre-twisting procedure.
The torsion bar spring pre-torsion stress rapid detection system is invented for the requirements, meets the requirements of torsion bar spring automatic production lines, and can simultaneously meet the requirements of small-batch or single-piece production.
Disclosure of Invention
The invention aims to provide a simple, easy-to-operate, high-precision and high-efficiency quick torsion bar pre-torsion stress measuring system, which is used for quickly and accurately measuring the pre-torsion stress of torsion bar springs with different materials and different diameters to obtain the pre-torsion stress value of the torsion bar springs, estimate the error and the confidence coefficient, meet the requirement of an automatic production line of the torsion bar springs, and simultaneously meet the requirement of small-batch or single-piece production.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides a torsion bar spring prestressing force short-term test system, includes prestressing force frock frame, prestressing force pole, spline stress transfer pole, qxcomm technology foil gage, computer, torsion bar spring locates on the prestressing force frock frame, and can rotate for the prestressing force frock frame, and torsion bar spring's one end passes through the spline and is connected with the spline stress transfer pole, is equipped with qxcomm technology foil gage on the spline stress transfer pole, and qxcomm technology foil gage is connected with the electromechanics, fixedly connected with prestressing force pole on the torsion bar spring.
As the preferable scheme, the pre-torsion tool frame is fixed on a production line base or a foundation through bolts, an installation seat is arranged on the pre-torsion tool frame, and the torsion bar spring is installed on the pre-torsion tool frame through the installation seat.
As the preference of above-mentioned scheme, still include slide rail, slide rail seat, the slide rail seat is located one side of pretwisting frock frame, and the last movable slide rail that is provided with of slide rail seat, the slide rail passes through the flange and is connected with spline stress transmission pole.
As the preferable of the scheme, a long hole is formed in the middle of the bottom of the sliding rail along the length direction parallel to the sliding rail seat, a bolt is arranged in the long hole, and a plurality of threaded holes are formed in the sliding rail seat at positions corresponding to the long holes of the sliding rail.
Preferably, the computer is arranged on the slide rail seat, the computer is connected with the omnidirectional strain gauge through a wire, and the omnidirectional strain gauge is stuck to the middle part of the spline stress transfer rod.
Preferably, the pre-torsion force rod is vertically fixed at one end of the torsion bar spring, which is close to the spline stress transmission rod.
Due to the structure, the invention has the beneficial effects that:
The torsion bar spring pre-torsion stress rapid detection system has the advantages of simple structure, easiness in operation, high precision and high efficiency, can rapidly and highly accurately measure the pre-torsion stress of torsion bar springs with different materials and diameters, obtains the torsion bar spring pre-torsion stress value, and can meet the requirement of an automatic torsion bar spring production line through the estimation error and the confidence coefficient of a computer system, and meanwhile, can meet the requirement of small-batch or single-piece production.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below.
FIG. 1 is a front view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a side view of the present invention;
fig. 4 is an enlarged view of a portion of the present invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 4, the present embodiment provides a torsion bar spring pre-torsion stress rapid detection system, which includes a pre-torsion tool frame 1, a pre-torsion force bar 3, a spline stress transfer bar 4, an omni-directional strain gauge 5, and a computer 7.
The pre-twisting tool frame 1 is fixed on a production line base or foundation through bolts, the pre-twisting tool frame 1 is provided with a mounting seat 12, and the torsion bar spring 2 is mounted on the pre-twisting tool frame 1 through the mounting seat 12 and can rotate relative to the pre-twisting tool frame 1.
One end of the torsion bar spring 2 is connected with the spline stress transfer rod 4 through a spline, and is used for reapplying the pretwist quantity of the torsion bar spring 2 on the spline stress transfer rod 4, providing basis for pretwist stress measurement, the pretwist stress rod 3 is fixedly connected on the torsion bar spring 2, and the pretwist stress rod 3 is vertically and fixedly arranged at one end, close to the spline stress transfer rod 4, of the torsion bar spring 2, and is used for pretwisting the torsion bar spring 2.
The spline stress transfer rod 4 is provided with an omnidirectional strain gauge 5, the omnidirectional strain gauge 5 is adhered to the middle of the spline stress transfer rod 4 and is electrically connected with the computer 7 through a lead, the spline stress transfer rod is used for measuring the torsional deformation of the spline stress transfer rod 4, converting the deformation into voltage, transmitting the voltage to an embedded system in the computer 7 through a data acquisition board, and used for prestress calculation, the computer 7 is arranged on a slide rail seat 11, and the data acquisition board in the computer system can acquire the voltage on the omnidirectional strain gauge 5, performs processing such as filtering and analog-to-digital conversion, and transmits the corresponding digital quantity to the embedded system in the computer 7. The embedded system in the computer 7 system receives the incoming data, performs analysis and calculation according to generalized Hooke's law, young's elastic theory and Rayleigh-litz method to obtain a torsion bar spring pre-torsion stress value, estimates the torsion bar spring pre-torsion stress value error by using a normal distribution general formula, and calculates the confidence coefficient of the estimated value.
Because the spline stress transfer rod 4 is matched with the torsion bar spring 2, the torsion bar spring 2 pre-torsion system is changed to a certain extent, and engineering plastics with smaller elastic modulus are selected as the spline stress transfer rod 4, so that the influence on the torsion bar spring 2 pre-torsion system is reduced.
The pre-torsion fixture is characterized by further comprising a sliding rail 6 and a sliding rail seat 11, wherein the sliding rail seat 11 is arranged on one side of the pre-torsion fixture frame 1 and is fixed on a production line base or foundation through bolts, the sliding rail seat 11 is movably provided with the sliding rail 6, and the sliding rail 6 is connected with the spline stress transfer rod 4 through a flange. The slide rail seat 11 can support the slide rail 6, the spline stress transfer rod 4 and the computer 7, bear bending moment and gravity transferred by the slide rail 6, simultaneously provide a moving track for the slide rail 6, ensure that the moving track of the slide rail 6 is correct, adapt to the measuring requirements of torsion bar springs 2 with different lengths, fix the slide rail 6 through bolts, and ensure that the spline stress transfer rod 4 is reliably connected with the spline on the torsion bar spring 2 to be measured.
Long holes 61 are formed in the middle of the bottom of the sliding rail 6 along the length direction parallel to the sliding rail seat 11, bolts are arranged in the long holes, and a plurality of threaded holes are formed in the sliding rail seat 11 at positions corresponding to the long holes of the sliding rail.
The working process and working principle of the structure are as follows:
A. The slide rail seat 11 and the pre-twisting tool rack 1 are fixed on a production line base or foundation through bolts, and the fixed position is shown in figure 1;
B. The slide rail 6 is arranged on the slide rail seat 11, as shown in fig. 1, the slide rail 6 can flexibly move on the slide rail seat 11, the slide rail 6 is pushed leftwards, bolts penetrate through long holes 61 in the middle of the bottom surface of the slide rail 6, the bolts are arranged in corresponding threaded holes of the slide rail seat 11, and the bolts are screwed, so that the slide rail 6 is fastened on the slide rail seat 11, as shown in fig. 4;
C. the spline stress transmission rod 4 is arranged on the sliding rail 6 through a flange by bolts;
D. The omnidirectional strain gage 5 is stuck on the spline stress transfer rod 4, the sticking is firm, and defects such as no bubbles are checked;
E. The computer 7 is arranged on the slide rail seat 11, and the computer 7 is connected with the omnidirectional strain gauge 5 through a lead;
F. when the detection of the pre-torsion stress of the torsion bar spring 2 is prepared, loosening bolts for fastening the slide rail 6 and the slide rail seat 11, pushing the slide rail 6 rightwards, enabling the internal spline of the spline stress transmission rod 4 to be reliably matched with the spline end of the torsion bar spring 2 to be detected, and then tightening the bolts for fastening the slide rail 6 and the slide rail seat 11;
G. After the computer 7 is started, a switch 10 in the computer is pressed, and a corresponding standard data set corresponding to the tested torsion bar spring 2 is selected on a computer screen 8 through a keyboard 9 of the computer 7;
H. the method comprises the steps of starting pre-twisting, pushing a pre-torsion loading rod 3 to rotate through a pre-torsion loading mechanism, further applying pre-twisting to a torsion bar spring 2, enabling a spline stress transfer rod 4 to generate the same rotation quantity as the torsion bar spring 2 through spline fit with the torsion bar spring 2, measuring the torsion quantity of the spline stress transfer rod 4 through an omni-directional strain gauge 5 adhered to the spline stress transfer rod 4, generating corresponding voltage signals, collecting the voltage quantity on the omni-directional strain gauge 5 through a data collecting plate in a computer 7 system, conducting filtering, analog-to-digital conversion and other processing, transmitting the corresponding digital quantity into an embedded system in the computer 7 system, analyzing and calculating the data according to a generalized Hooke law, a Young's elastic theory and a Rayleigh-litz method, obtaining a torsion bar spring pre-twisting stress value, estimating the torsion bar spring pre-twisting stress value error through normal distribution profile, and calculating the confidence of an estimated value. And displayed on the computer screen 8. And the pre-torsion stress is rapidly detected while the pre-torsion loading is completed.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A torsion bar spring pre-torsion stress rapid detection system is characterized in that: the torsion bar spring is arranged on the pre-torsion tool frame, one end of the torsion bar spring is connected with the spline stress transmission rod through a spline, the spline stress transmission rod is provided with an omnidirectional strain gauge, the omnidirectional strain gauge is electrically connected with a computer, and the torsion bar spring is fixedly connected with the pre-torsion force transmission rod;
The pre-torsion tool frame is fixed on a production line base or a foundation through bolts, an installation seat is arranged on the pre-torsion tool frame, and the torsion bar spring is installed on the pre-torsion tool frame through the installation seat;
the device comprises a pre-twisting tool rack, a production line base or a foundation, and is characterized by further comprising a sliding rail and a sliding rail seat, wherein the sliding rail seat is arranged on one side of the pre-twisting tool rack and is fixed on the production line base or the foundation through bolts, the sliding rail seat is movably provided with a sliding rail, and the sliding rail is connected with a spline stress transmission rod through a flange;
The middle of the bottom of the sliding rail is provided with a long hole along the length direction parallel to the sliding rail seat, a bolt is arranged in the long hole, the sliding rail seat is provided with a plurality of threaded holes at positions corresponding to the long holes of the sliding rail, and the sliding rail can flexibly move on the sliding rail seat and is fastened by the bolt.
2. The torsion bar spring pre-torsion stress rapid detection system according to claim 1, wherein: the computer is installed on the slide rail seat, and the computer is connected with the omnidirectional strain gauge through a wire, and the omnidirectional strain gauge is stuck to the middle part of the spline stress transfer rod.
3. The torsion bar spring pre-torsion stress rapid detection system according to claim 1, wherein: the pre-torsion force rod is vertically and fixedly arranged at one end, close to the spline stress transmission rod, of the torsion bar spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911320928.7A CN110864895B (en) | 2019-12-19 | 2019-12-19 | Torsion bar spring pre-torsion stress rapid detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911320928.7A CN110864895B (en) | 2019-12-19 | 2019-12-19 | Torsion bar spring pre-torsion stress rapid detection system |
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| Publication Number | Publication Date |
|---|---|
| CN110864895A CN110864895A (en) | 2020-03-06 |
| CN110864895B true CN110864895B (en) | 2024-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911320928.7A Active CN110864895B (en) | 2019-12-19 | 2019-12-19 | Torsion bar spring pre-torsion stress rapid detection system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB966713A (en) * | 1960-07-18 | 1964-08-12 | Philips Electrical Ind Ltd | Improvements in or relating to devices for measuring forces causing distortion in a rotary shaft |
| KR100655058B1 (en) * | 2005-12-29 | 2006-12-06 | 두산중공업 주식회사 | Torsion stress test device for torque tube |
| CN105841602A (en) * | 2016-05-23 | 2016-08-10 | 广西交通科学研究院 | High-resolution-ratio strain testing apparatus |
| CN110057481A (en) * | 2019-05-28 | 2019-07-26 | 武汉理工大学 | Measuring device is transmitted based on fiber grating and two between centers torques of strain-ga(u)ge technique |
| CN210953379U (en) * | 2019-12-19 | 2020-07-07 | 湖北三江航天万山特种车辆有限公司 | Quick detecting system of torsion bar spring pre-torsion stress |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0620944D0 (en) * | 2006-10-20 | 2006-11-29 | Insensys Ltd | Curvature measurement moving relative to pipe |
| JP6226325B2 (en) * | 2014-01-31 | 2017-11-08 | 飛栄建設株式会社 | Destruction detection sensor, destruction detection system and structure |
-
2019
- 2019-12-19 CN CN201911320928.7A patent/CN110864895B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB966713A (en) * | 1960-07-18 | 1964-08-12 | Philips Electrical Ind Ltd | Improvements in or relating to devices for measuring forces causing distortion in a rotary shaft |
| KR100655058B1 (en) * | 2005-12-29 | 2006-12-06 | 두산중공업 주식회사 | Torsion stress test device for torque tube |
| CN105841602A (en) * | 2016-05-23 | 2016-08-10 | 广西交通科学研究院 | High-resolution-ratio strain testing apparatus |
| CN110057481A (en) * | 2019-05-28 | 2019-07-26 | 武汉理工大学 | Measuring device is transmitted based on fiber grating and two between centers torques of strain-ga(u)ge technique |
| CN210953379U (en) * | 2019-12-19 | 2020-07-07 | 湖北三江航天万山特种车辆有限公司 | Quick detecting system of torsion bar spring pre-torsion stress |
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| CN110864895A (en) | 2020-03-06 |
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