CN105241644A - Fatigue testing tool for steel plate spring - Google Patents
Fatigue testing tool for steel plate spring Download PDFInfo
- Publication number
- CN105241644A CN105241644A CN201510602982.6A CN201510602982A CN105241644A CN 105241644 A CN105241644 A CN 105241644A CN 201510602982 A CN201510602982 A CN 201510602982A CN 105241644 A CN105241644 A CN 105241644A
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- holder
- leaf spring
- fixture
- threaded rod
- cubing
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Abstract
The invention relates to the field of vehicle detection, and especially relates to a fatigue testing tool for a steel plate spring. The tool comprises a substrate, supporting plates, and a fixed seat, wherein the fixed seat is located above the substrate, and the fixed seat is in sliding connection with the substrate through the supporting plates fixed at two sides. The central axis of the fixed seat is provided with a tension groove, and tension groove divides the fixed seat into two parts. The surface of the fixed seat is provided with fixing parts which are used for fixing a wrapping lug of the steel plate spring. A pressure sensor is connected between the fixing parts. Two sides of the substrate are provided with tension parts, and the tension parts are fixedly connected with an end part of the fixed seat. The tool achieves the detection of the tension limit of the steel plate spring through the arrangement of the tension parts and a sliding mechanism.
Description
Technical field
The present invention relates to automobile detection field, particularly the tired cubing of leaf spring.
Background technology
Along with the fast development of transportation, truck freight volume, every year with speed increment faster, brings the problem of automobile overload thereupon.Cargo vehicle overload travels, and not only causes certain destruction to road, and all can impact, particularly on the impact of braking ability serviceable life of vehicle itself and technology status.Automobile overload can cause automobile brake distance to increase, and easily causes traffic hazard.And what play a crucial role for the delivery situation of automobile is leaf spring.Leaf spring is most widely used a kind of flexible member in automotive suspension, and it is wide by some but the elastic beam of an approximately equi-strength that combines of the alloy spring sheet of Length discrepancy.When leaf spring is arranged in automotive suspension, when the vertical load of bearing is forward, each spring leaf all stress deformations, the trend that oriented arch is curved.At this moment, vehicle bridge and vehicle frame are just close to each other.When vehicle bridge and vehicle frame mutually away from time, the forward vertical load suffered by leaf spring and distortion just reduce gradually, sometimes even can be reverse.Generally carrying out testing fatigue to leaf spring in prior art, is all exerted a force to it by vertical positive power, thus detects the maximum power that leaf spring can bear.But automobile is in operational process, and because the speed of automobile ceaselessly changes, each part of leaf spring is stressed different, makes the power that leaf spring will be stretched simultaneously, but, the limit of stretch of leaf spring is not detected now.
Summary of the invention
The object of this invention is to provide the tired cubing of leaf spring, thus the limit of stretch of leaf spring is detected.
The invention provides a kind of base case: the tired cubing of leaf spring, comprises pedestal, back up pad and holder, fixed seating is in the top of pedestal, and holder is slidably connected by the fixing back up pad in both sides and pedestal; Holder central axis place is provided with stretch slot, and holder is divided into two parts, and the surface of holder is provided with the fixture for fixation steel plate spring wraparound ear, and the both sides of fixture are provided with pressure transducer; The both sides of pedestal are provided with extension section, and extension section is connected with the end winding support of holder.
Principle of work and beneficial effect are: be first fixed on holder by two of leaf spring wraparound ears respectively by fixture, then extension section is pulled, make back up pad to the both sides slide in opposition of pedestal, leaf spring is stretched, and can detect suffered pressure by pressure transducer.When leaf spring arrives its limit of stretch, there will be crack conditions, thus, before fracture, the reading of pressure transducer is its limit of stretch number.
The present invention carries out horizontal location by holder to leaf spring, meanwhile, adopts fixture wraparound ear to be fixed on the two ends of holder, leaf spring can be moved with the motion of holder.In order to detect the limit of stretch of leaf spring, holder being divided into two parts, promoting back up pad to two Slideslips by extension section simultaneously, thus its limit of stretch of gradual detection.Wherein, adopt pressure transducer, tensile force is detected, in real time it is monitored.
Further prioritization scheme one for base case: fixture is the U-shaped structure that two level heights are equal, and fit completely in the side of fixture and the surface of holder, fixture side is provided with mounting hole, fixture fixes wraparound ear by mandrel through mounting hole.Leaf spring is fixed on holder, and for the ease of carrying out the detection of limit of stretch to leaf spring, first leaf spring will be fixed on holder.For this reason, fixture being set on holder, by being fixed by the wraparound ear at its two ends, meanwhile, ensure that its wraparound ear is in same surface level.
Further prioritization scheme two for base case: impact faces is provided with the chute be slidably matched with back up pad.In order to carry out limit of stretch test to leaf spring, leaf spring can being stretched to both sides, by arranging chute at impact faces, realizing the slip between pedestal and back up pad, increase the distance of two parts of holder.
Further prioritization scheme three for base case: extension section comprises threaded rod and is positioned at the handle of threaded rod one end, the other end of threaded rod is provided with pushing block, the both sides of holder are provided with the cavity with pushing block clearance fit, and threaded rod is provided with the nut with threaded rod threaded engagement.In order to give the power that holder slides to both sides, can be transformed into by the helical motion of threaded rod and promote the fast holder that drives to the rectilinear motion on both sides.Cavity is established in holder, the end of threaded rod coordinates with the cavity clearance of holder, when needing the limit of stretch detecting leaf spring, threaded rod forward screw thread rotation is moved to both sides, due to pushing block and the holder clearance fit of threaded rod, the surface of cavity can be promoted, thus realize threaded rod promote holder move to both sides; After detection, the reverse screw thread rotation of threaded rod, moving to centre position in the surface that the pushing block of threaded rod pushes down cavity, thus recovers original position.Wherein nut and threaded rod threaded engagement, can drive threaded rod rectilinear motion.
Further prioritization scheme four for base case: threaded rod is fixedly connected with by bearing with holder.The bearing of setting and threaded rod interference fit can reduce the friction between holder and threaded rod, and mainly because bearing comprises inner ring, outer ring and ball, the ball in bearing can reduce friction.
Further prioritization scheme five for base case: pressure transducer is connected by the guide pole being wound with spring with fixture, pressure transducer is electrically connected with vehicle-mounted computer and display.In order to the data of the limit of stretch to leaf spring are monitored and record in real time, pressure transducer can be set for this reason signal feedback is carried out to the pressure given that stretches, meanwhile, be carried out the process of signal by vehicle-mounted computer, in display, show final data.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of fixture in Fig. 1.
Mark in above-mentioned figure is: pedestal 1, back up pad 2, holder 3, chute 4, fixture 5, mandrel 501, guide pole 6, pressure transducer 601, vehicle-mounted computer 602, display 603, threaded rod 7, handle 701, pushing block 702, nut 703, bearing 704.
Embodiment
As depicted in figs. 1 and 2, the tired cubing of leaf spring, comprise pedestal 1, two back up pads 2 and holder 3, holder 3 is positioned at the top of pedestal 1, and holder 3 is slidably connected with pedestal 1 by the back up pad 2 that both sides are fixing.Wherein pedestal 1 is placed in the horizontal plane, keeps the levelness of whole test process, ensures the accuracy of test data.Meanwhile, pedestal 1 is rectangular parallelepiped, and adopts Gr12 material to make, and after heat treatment hardness controls at HRC58, and material is more wear-resisting, extends serviceable life.Pedestal 1 is provided with chute 4 above, and bottom and the chute 4 of back up pad 2 are slidably matched.Holder 3 central axis place offers stretch slot, holder 3 is divided into two parts, is convenient to stretch to being fixed on leaf spring.Simultaneously, holder 3 is provided with fixture 5 above, fixture 5 is the U-shaped structure that two level heights are equal, fit completely in the side of fixture 5 and the surface of holder 3, fixture 5 side is provided with mounting hole, fixture 5 fixes wraparound ear by mandrel 501 through mounting hole, is convenient to leaf spring to be fixed on holder 3.Connected by guide pole 6 between fixture 5, the outside of guide pole 6 is wound with spring.Guide pole 6 is electrically connected with pressure transducer 601, vehicle-mounted computer 602 and display 603 by wire, thus the pressure produced that stretches is monitored in real time, simultaneously to its process and display, realize the display of limit of stretch data, convenient operation personnel record.Simultaneously, the two ends of holder 3 are provided with threaded rod 7, one end of threaded rod 7 is fixed with handle 701, the other end of threaded rod 7 is provided with pushing block 702, the both sides of holder 3 are provided with the cavity with pushing block 702 clearance fit, threaded rod 7 is provided with the nut 703 with threaded rod 7 threaded engagement, be convenient to promote holder 3 move to both sides, realize the stretcher strain of leaf spring, simultaneously, holder 3 is fixedly connected with supporting seat 2, and moves along chute 4, thus the helical motion of threaded rod 7 is converted into rectilinear motion.Threaded rod 7 is fixedly connected with by bearing 704 with holder 3, and bearing 704 comprises inner ring, outer ring and ball, and the ball in bearing 704 can reduce friction.
First two of leaf spring wraparound ears are fixed on holder 3 respectively by fixture 5, then outside rotating threaded rod 7, make back up pad 2 to the both sides slide in opposition of pedestal 1, leaf spring is stretched, and can detect suffered pressure by pressure transducer 601.When leaf spring arrives its limit of stretch, there will be crack conditions, thus, before fracture, the reading of pressure transducer 601 is its limit of stretch number.
Above-described is only the preferred embodiment of the present invention, should be understood that for a person skilled in the art, under the prerequisite not departing from structure of the present invention, can also make some distortion and improvement, these all can not affect effect of the invention process and practical applicability.
Claims (6)
1. the tired cubing of leaf spring, is characterized in that, comprises pedestal, back up pad and holder, and described fixed seating is in the top of pedestal, and holder is slidably connected by the fixing back up pad in both sides and pedestal; Described holder central axis place is provided with stretch slot, and holder is divided into two parts, and the surface of holder is provided with the fixture for fixation steel plate spring wraparound ear, is connected with pressure transducer between described fixture; The both sides of described pedestal are provided with extension section, and extension section is connected with the end winding support of holder.
2. the tired cubing of leaf spring according to claim 1, it is characterized in that: described fixture is the U-shaped structure that two level heights are equal, fit completely in the side of fixture and the surface of holder, fixture side is provided with mounting hole, and fixture fixes wraparound ear by mandrel through mounting hole.
3. the tired cubing of leaf spring according to claim 1, is characterized in that: described impact faces is provided with the chute be slidably matched with back up pad.
4. the tired cubing of leaf spring according to claim 1, it is characterized in that: described extension section comprises threaded rod and is positioned at the handle of threaded rod one end, the other end of threaded rod is provided with pushing block, the both sides of holder are provided with the cavity with pushing block clearance fit, and threaded rod is provided with the nut with threaded rod threaded engagement.
5. the tired cubing of leaf spring according to claim 4, is characterized in that: described threaded rod is fixedly connected with by bearing with holder.
6. the tired cubing of leaf spring according to claim 1, it is characterized in that: described pressure transducer is connected by the guide pole being wound with spring with fixture, pressure transducer is electrically connected with vehicle-mounted computer and display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510602982.6A CN105241644A (en) | 2015-09-21 | 2015-09-21 | Fatigue testing tool for steel plate spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510602982.6A CN105241644A (en) | 2015-09-21 | 2015-09-21 | Fatigue testing tool for steel plate spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105241644A true CN105241644A (en) | 2016-01-13 |
Family
ID=55039367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510602982.6A Pending CN105241644A (en) | 2015-09-21 | 2015-09-21 | Fatigue testing tool for steel plate spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105241644A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109238674A (en) * | 2018-09-11 | 2019-01-18 | 江苏擎弓科技股份有限公司 | Composite material automobile leaf spring quality inspection technique quality detection apparatus |
| CN111811789A (en) * | 2019-07-15 | 2020-10-23 | 苏州市新艺弹簧厂 | High-efficient test equipment of vertical spring |
| CN112146898A (en) * | 2019-06-26 | 2020-12-29 | 上海默创信息科技有限公司 | Quality detection system for product production |
-
2015
- 2015-09-21 CN CN201510602982.6A patent/CN105241644A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109238674A (en) * | 2018-09-11 | 2019-01-18 | 江苏擎弓科技股份有限公司 | Composite material automobile leaf spring quality inspection technique quality detection apparatus |
| CN112146898A (en) * | 2019-06-26 | 2020-12-29 | 上海默创信息科技有限公司 | Quality detection system for product production |
| CN111811789A (en) * | 2019-07-15 | 2020-10-23 | 苏州市新艺弹簧厂 | High-efficient test equipment of vertical spring |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160113 |