CN203745317U - Large-deformation palm rattan wood creep testing device - Google Patents
Large-deformation palm rattan wood creep testing device Download PDFInfo
- Publication number
- CN203745317U CN203745317U CN201420064644.2U CN201420064644U CN203745317U CN 203745317 U CN203745317 U CN 203745317U CN 201420064644 U CN201420064644 U CN 201420064644U CN 203745317 U CN203745317 U CN 203745317U
- Authority
- CN
- China
- Prior art keywords
- regulating device
- test
- experimental box
- transmission rod
- exerting pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model belongs to a large-deformation palm rattan wood creep testing device, wherein separated space arrangement is adopted for a test environment where the test material is located and a device applying pressure to the test material, and the pressure applying device is a mechanically manual pressure applying regulating device. The device is formed by a test box, an operating platform and the pressure applying regulating device, wherein the upper end of the test body is provided with a seal cover, the upper end of the seal cover is provided with a seal mask, the operating platform and the test material are positioned in the test box, the pressure applying regulating device is positioned in the seal mask at the upper end of the seal cover, and the lower end of a dowel bar of the pressure applying regulating device passes through a bar passing hole in the seal cover to be connected with the upper end of a pressure head. The method disclosed by the utility model not only is suitable for long-time test requirement and ensures the creep test precision, but also can greatly lower the test operation cost; the device has the advantages of being simple in structure, low in production cost, convenient to operate and maintain, high in loading stability precision, low in test cost and good in effect.
Description
Technical field
The utility model belongs to a kind of large deformation windmill palm vine material creep proving installation.
Background technology
The creep behaviour of biological material belongs to the rheol category of Material Physics, is the one of biological material viscoelasticity behavior, and other viscoelasticity behavior mainly also comprises stress relaxation and the dynamic viscoelastic of biological material.Windmill palm vine material is as complicated macromolecular material, flows, all can show viscoelasticity behavior in the process such as crystallization, molecular orientation at its molecule segment motion, molecule.The viscoelasticity of research windmill palm vine material is for the structural design of windmill palm vine material product, some fundamental researches of Wood Science and Technology aspect, all significant.
Windmill palm vine material has the distortion of elasticity and two kinds of different mechanism of viscosity simultaneously as recyclable organism material, embody the overall characteristic of elastic solid (Hookean body) and fluid, i.e. viscoelasticity.The viscoelasticity research tool of biological material is of great significance.On the one hand, biological material is easily subject to the impact of temperature, water percentage variation or load change and presents viscoelasticity, and creep accumulation produces large distortion, causes biological material finally to destroy; On the other hand, biological material viscoelasticity is the basis of the biological material processing technology such as biological material bending, plasticization processing.Therefore, the viscoelasticity of biological material is not only the physics of biological material and the fundamental research content of mechanical property, effectively utilizes especially the theoretical foundation of biological material.The viscoelasticity of windmill palm vine material depends on the factors such as magnitude of load, temperature, water percentage, duration of load application, loading speed and strain amplitude, and wherein the impact of temperature, water percentage and load is particularly evident.The viscoelastic property of resolving windmill palm vine material uniqueness contributes to reasonable utilization, improved properties and the product development etc. of windmill palm vine material.
Creep is viscoelastic important content, refers to the process that under permanent load effect deformation extends in time and increase gradually.Bending creep speed is an important indicator of evaluating material anti-bending strength, is also an important evaluation index of materials'use performance, and bending creep proving installation is the equipment of measuring material bending creep rate.The draw factor complexity of windmill palm vine material, creep properties while understanding its long under varying environment conditioning, all very important to its product development and design.The croop property of research windmill palm vine material under varying environment condition can not only be enriched its theory of mechanics, meanwhile, to improving its moulding process, expands its usable range, extends its serviceable life, and prevents that from there is great importance the aspect such as modification of its embrittlement.
3 load bending experiments that add a centre-point load at free beam middle part are one of the most frequently used method of testings of creep test.In addition also have 4 load bending creep tests and semi-girder to load creep test.The time of creep test is longer, short 72 hours, long reach half a year even more than 1 year, and creep test cost is high, expend a large amount of man power and materials.Therefore,, in process of the test, reduction test run cost, warranty test load reliable and stable extremely important.Common creep test, data precision is difficult to ensure.And adopt electronic universal tester to carry out creep test, being subject to the extraneous factor such as powers failure, voltage fluctuation affects, and equipment manufacturing cost and operating cost higher, be not suitable for long-time creep test needs.
Summary of the invention
The purpose of this utility model is a kind of large deformation windmill palm vine material creep proving installation of design, can be suitable for long period of experiments needs, ensure creep measuring accuracy, can significantly reduce again test run cost, have simple in structurely, cost of manufacture is low, and Operation and maintenance are convenient, loading lasting accuracy is high, the advantage that experimental cost is low and effective.
For this reason, the utility model is made up of experimental box, operating platform and the regulating device of exerting pressure, wherein:
Experimental box, gland bonnet is established in the upper end of experimental box, and the upper end of gland bonnet is provided with sealing cover, and operating platform and experiment material are positioned at experimental box, the regulating device of exerting pressure is positioned at the sealing cover of gland bonnet upper end, and the transmission rod lower end of the regulating device of exerting pressure is connected with the upper end of pressure head through the bar hole of crossing on gland bonnet;
Operating platform, operating platform is positioned at the experimental box of sealing, operating platform is made up of support saddle frame, gathering sill, bearing, bolt column, fixture, pressure head, heating and moistening device and Temperature Humidity Sensor, in support saddle frame, be provided with gathering sill, the lower end of bearing is fixed in gathering sill by bolt column, and the upper end of bearing is provided with fixture, fixes experiment material on fixture, in the experimental box of bearing one side, be provided with Temperature Humidity Sensor, heating and moistening device is positioned at experimental box lower end;
The regulating device of exerting pressure, the regulating device of exerting pressure is positioned at the sealing cover of experimental box upper end, by support, connecting link, displacement transducer, bolt, transmission rod, strain gauge, hinge, load lever, counterweight bar and counterweight form, one end of connecting link is fixed in the upper end of support, the other end of connecting link is provided with displacement transducer, displacement transducer is set on the upper end of transmission rod, between the gland bonnet upper end of transmission rod and excessively bar hole periphery, be provided with strain gauge, the lower end of transmission rod is connected with the upper end of pressure head through the bar hole of crossing on gland bonnet, the lower end of pressure head holds on the upper surface of experiment material, the one end that loads lever is connected with the middle part of support by hinge, load the middle part of lever is installed in same level face transmission rod upper by bolt, the periphery wall that loads the other end of lever is marked with weight scale line, the lower end of counterweight bar is set in the upper end of the loading lever that indicates weight scale line segment, on counterweight bar, be arranged with counterweight.
Described Temperature Humidity Sensor, strain gauge and displacement transducer are connected with computing machine by data line respectively.Described heating and moistening device is automatic heating humidifier, or is by computer-controlled automatic heating humidifier.The leading flank of described experimental box is the sightingpiston that transparent material is made.The lower end of described counterweight bar is Y shape runner frame, and the Y shape runner frame of a side is provided with fixing snib.Described transmission rod center line and the horizontal angle of experiment material are 90 °.The described regulating device of exerting pressure is the regulating device of exerting pressure of mechanical type manual.The residing experimental situation of described experiment material is positioned at the space of a sealing, and the regulating device of exerting pressure that experiment material is exerted pressure is located thereon in another space of end.
Said structure design has reached the purpose of this utility model.
The utility model can be realized the croop property of windmill palm vine material under varying environment condition and measure, can be suitable for long period of experiments needs, ensure creep measuring accuracy, can significantly reduce again test run cost, have simple in structurely, cost of manufacture is low, and Operation and maintenance are convenient, loading lasting accuracy is high, the advantage that experimental cost is low and effective.According to statistics: the creep curve that is better than making with electronic universal tester experiment material with the creep curve that the utility model is drawn out experiment material, this is because electronic universal tester is to be completed by computer-controlled hydropress to the loading force of experiment material, and hydropress is subject to the unsettled impact of voltage crest, can not ensure steady in a long-term, heap(ed) capacity accurately.And the utility model can ensure loading force stability and accuracy from start to finish, thereby it is more approaching true to make to make the creep curve of experiment material.And experimental cost of the present utility model is only 5% of electronic universal tester experimental cost, experimenter's 10%, significantly experimental expenses.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model device.
Fig. 2 is counterweight bar structural representation of the present utility model.
Embodiment
As depicted in figs. 1 and 2, a kind of large deformation windmill palm vine material creep proving installation, is made up of experimental box 21, operating platform and the regulating device of exerting pressure, wherein:
Experimental box, gland bonnet 25 is established in the upper end of experimental box, and the upper end of gland bonnet is provided with sealing cover 1, and sealing cover can be made up of transparent material, is fastened on the upper end of gland bonnet, for giving the stable space of regulating device of exerting pressure.Operating platform and experiment material 24 are positioned at experimental box.The regulating device of exerting pressure is positioned at the sealing cover of gland bonnet upper end, and the transmission rod lower end of the regulating device of exerting pressure is connected with the upper end of pressure head 16 through the bar hole 15 of crossing on gland bonnet.
Operating platform, operating platform is positioned at the experimental box of sealing, and operating platform is made up of support saddle frame 18, gathering sill 22, bearing 20, bolt column 19, fixture 17, pressure head, heating and moistening device 23 and Temperature Humidity Sensor 10.In support saddle frame, be provided with gathering sill, the lower end of bearing is fixed in gathering sill by bolt column, and the post that loosers a bolt also can make bearing move in gathering sill, to facilitate the distance of adjusting two bearings.Bearing is two, also can arrange according to need 3～4.The upper end of bearing is provided with fixture, fixes experiment material on fixture.In the experimental box of bearing one side, be provided with Temperature Humidity Sensor, Temperature Humidity Sensor is connected with computing machine by data line.Heating and moistening device 23 is positioned at experimental box lower end, and described heating and moistening device is automatic heating humidifier, or is by computer-controlled automatic heating humidifier, keeps constant temperature and humidity for making in experimental box.
The regulating device of exerting pressure, the regulating device of exerting pressure is positioned at the sealing cover of experimental box upper end, by support 2, connecting link 3, displacement transducer 4, bolt 11, transmission rod 13, strain gauge 14, hinge 12, load lever 5, counterweight bar 7 and counterweight 6 and formed.One end of connecting link is fixed in the upper end of support, and the other end of connecting link is provided with displacement transducer, and displacement transducer is set on the upper end of transmission rod, and displacement transducer is connected with computing machine 9 by data line 8.Between the gland bonnet upper end of transmission rod and excessively bar hole 15 peripheries, be provided with strain gauge 14, strain gauge is connected with computing machine by data line.The lower end of transmission rod is connected with the upper end of pressure head through the bar hole of crossing on gland bonnet, and the lower end of pressure head holds on the upper surface of experiment material.Load one end of lever and is connected with the middle part of support by hinge, the middle part of loading lever is installed in transmission rod upper of same level face by bolt, and the periphery wall of the other end of loading lever is marked with weight scale line.The lower end of counterweight bar is set in the upper end of the loading lever that indicates weight scale line segment, on counterweight bar, is arranged with counterweight.The lower end of described counterweight bar is that the Y shape runner frame of Y shape runner frame 71, one sides is provided with fixing snib 72, and the Y shape runner frame of fixing snib and a side is spirally connected.Turning fixing snib holds its termination and counterweight masthead, can fix counterweight bar in loading on any part of lever, be that counterweight bar can be fixed on any part of loading lever that indicates weight scale line segment by fixing snib, the loading that loads lever to fix is exerted pressure.Otherwise counterweight bar can move at any part of the loading lever that indicates weight scale line segment, to adjust the loaded weight to transmission rod.
The leading flank of described experimental box is the sightingpiston that transparent material is made, and transparent material is glass or organic transparent material, to facilitate situation in observation experiment case.Described transmission rod center line and the horizontal angle of experiment material are 90 °.
The described regulating device of exerting pressure is the regulating device of exerting pressure of mechanical type manual.The residing experimental situation of described experiment material is positioned at the space of a sealing, and the regulating device of exerting pressure that experiment material is exerted pressure is located thereon in another space of end.
When use, experiment material is processed into sheet by the size needing according to experiment, record by trial test the ultimate load that the bending ratio of experiment material can reach, a selected suitable bending load value is carried out bending creep test, calculate bending creep through lever principle and test needed weight, and calculate according to weighing scale the quality that loads counterweight.Experimental facilities in experimental box and sealing cover is installed, by data line, displacement transducer is connected with computing machine with Temperature Humidity Sensor, and the environment in experimental box and humidity regulation need to be arrived to assigned temperature and humidity according to experiment, the data that can be imported according to Temperature Humidity Sensor by computing machine also be controlled accordingly the running of heating and moistening device and realize.Experiment material is fixed on bearing with fixture, after balance a period of time, counterweight is plugged on counterweight bar, the displacement of parallel counterweight bar on loading lever or the quantity of increase and decrease counterweight, to change the stressed size of experiment material, by counterweight, power is loaded into and is loaded on lever, by loading lever, loading force is passed to transmission rod by loading the point of application again, and by the pressure head on transmission rod to the experiment material experiment of exerting pressure, strain gauge and displacement transducer are by carrying out Real-time Collection to experimental data, and be transferred in computing machine by data line, utilize system software to process data, draw out creep curve.
Experimental provision of the present utility model can be followed according to the creep properties of the different materials such as windmill palm vine material, and two bearings are equipped with to single head pattern pressure head, can carry out three-point bending creep test; Two bearings are equipped with double end pattern pressure head, can carry out four-point bending creep test; A bearing is equipped with single-point type pressure head, can carry out semi-girder and load creep test.
The utility model can be realized the croop property of windmill palm vine material under varying environment condition and measure, can also be used as the croop property of other materials such as wood, bamboo under varying environment condition measures, the utility model gathers automatically to the deformation of creep of test material, its creep process is followed the tracks of, and be connected with computing machine, directly draw creep process, the steady state creep strain rate of simultaneously measurable material under determined test condition, have simple in structure, easy to operate, easy to maintenance, load lasting accuracy high, the advantage that experimental cost is low and effective.
Claims (8)
1. a large deformation windmill palm vine material creep proving installation, is made up of experimental box, operating platform and the regulating device of exerting pressure, and it is characterized in that:
Experimental box, gland bonnet is established in the upper end of experimental box, and the upper end of gland bonnet is provided with sealing cover, and operating platform and experiment material are positioned at experimental box, the regulating device of exerting pressure is positioned at the sealing cover of gland bonnet upper end, and the transmission rod lower end of the regulating device of exerting pressure is connected with the upper end of pressure head through the bar hole of crossing on gland bonnet;
Operating platform, operating platform is positioned at the experimental box of sealing, operating platform is made up of support saddle frame, gathering sill, bearing, bolt column, fixture, pressure head, heating and moistening device and Temperature Humidity Sensor, in support saddle frame, be provided with gathering sill, the lower end of bearing is fixed in gathering sill by bolt column, and the upper end of bearing is provided with fixture, fixes experiment material on fixture, in the experimental box of bearing one side, be provided with Temperature Humidity Sensor, heating and moistening device is positioned at experimental box lower end;
The regulating device of exerting pressure, the regulating device of exerting pressure is positioned at the sealing cover of experimental box upper end, by support, connecting link, displacement transducer, bolt, transmission rod, strain gauge, hinge, load lever, counterweight bar and counterweight form, one end of connecting link is fixed in the upper end of support, the other end of connecting link is provided with displacement transducer, displacement transducer is set on the upper end of transmission rod, between the gland bonnet upper end of transmission rod and excessively bar hole periphery, be provided with strain gauge, the lower end of transmission rod is connected with the upper end of pressure head through the bar hole of crossing on gland bonnet, the lower end of pressure head holds on the upper surface of experiment material, the one end that loads lever is connected with the middle part of support by hinge, load the middle part of lever is installed in same level face transmission rod upper by bolt, the periphery wall that loads the other end of lever is marked with weight scale line, the lower end of counterweight bar is set in the upper end of the loading lever that indicates weight scale line segment, on counterweight bar, be arranged with counterweight.
2. by a kind of large deformation windmill palm vine material creep proving installation claimed in claim 1, it is characterized in that: described Temperature Humidity Sensor, strain gauge and displacement transducer are connected with computing machine by data line respectively.
3. by a kind of large deformation windmill palm vine material creep proving installation claimed in claim 1, it is characterized in that: described heating and moistening device is automatic heating humidifier, or be by computer-controlled automatic heating humidifier.
4. by a kind of large deformation windmill palm vine material creep proving installation claimed in claim 1, it is characterized in that: the leading flank of described experimental box is the sightingpiston that transparent material is made.
5. by a kind of large deformation windmill palm vine material creep proving installation claimed in claim 1, it is characterized in that: the lower end of described counterweight bar is Y shape runner frame, the Y shape runner frame of a side is provided with fixing snib.
6. by a kind of large deformation windmill palm vine material creep proving installation claimed in claim 1, it is characterized in that: described transmission rod center line and the horizontal angle of experiment material are 90 °.
7. by a kind of large deformation windmill palm vine material creep proving installation claimed in claim 1, it is characterized in that: the described regulating device of exerting pressure is the regulating device of exerting pressure of mechanical type manual.
8. by a kind of large deformation windmill palm vine material creep proving installation claimed in claim 1, it is characterized in that: the residing experimental situation of described experiment material is positioned at the space of a sealing, the regulating device of exerting pressure that experiment material is exerted pressure is located thereon in another space of end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420064644.2U CN203745317U (en) | 2014-02-13 | 2014-02-13 | Large-deformation palm rattan wood creep testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420064644.2U CN203745317U (en) | 2014-02-13 | 2014-02-13 | Large-deformation palm rattan wood creep testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203745317U true CN203745317U (en) | 2014-07-30 |
Family
ID=51345102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420064644.2U Expired - Fee Related CN203745317U (en) | 2014-02-13 | 2014-02-13 | Large-deformation palm rattan wood creep testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203745317U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237030A (en) * | 2014-09-10 | 2014-12-24 | 江阴市产品质量监督检验所 | Compression creep tester |
| CN108072567A (en) * | 2017-12-08 | 2018-05-25 | 广州特种承压设备检测研究院 | A kind of plastics constant temperature stress etching experiment device and method |
| CN113686677A (en) * | 2021-08-20 | 2021-11-23 | 国际竹藤中心 | Real-time measurement device and method for internal stress of biomass material |
-
2014
- 2014-02-13 CN CN201420064644.2U patent/CN203745317U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237030A (en) * | 2014-09-10 | 2014-12-24 | 江阴市产品质量监督检验所 | Compression creep tester |
| CN108072567A (en) * | 2017-12-08 | 2018-05-25 | 广州特种承压设备检测研究院 | A kind of plastics constant temperature stress etching experiment device and method |
| CN113686677A (en) * | 2021-08-20 | 2021-11-23 | 国际竹藤中心 | Real-time measurement device and method for internal stress of biomass material |
| CN113686677B (en) * | 2021-08-20 | 2023-09-15 | 国际竹藤中心 | Real-time measuring device and method for internal stress of biomass material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103808572A (en) | Simple method for various creepage tests and device thereof | |
| CN106706422B (en) | Ground surface material stretching, compression, split resilient modulus synchronous detecting method and device | |
| CN201034921Y (en) | Concrete in compression slowly changing experiment tester | |
| CN202676329U (en) | Pressure sensor | |
| CN203745317U (en) | Large-deformation palm rattan wood creep testing device | |
| CN201909739U (en) | Arch structure test device | |
| CN201876396U (en) | Measuring device of static normal direction contact stiffness of junction plane | |
| CN105928810B (en) | Fibre reinforced materials flexural fatigue test method | |
| CN106124337A (en) | A kind of for the test of rubber elastomer high-temerature creep and the device of stress relaxation test | |
| CN204495658U (en) | The adjustable amount of deflection of complex condition and modulus tester | |
| CN105865938A (en) | Method for conducting dry-wet cycle and direct shear test on simulated load-bearing soil | |
| CN103163016A (en) | Auxiliary device for carrying out axial tension test on quasi brittle materials | |
| CN204128895U (en) | The constant compressive stress charger of concrete | |
| CN202794164U (en) | Experiment device for measuring concrete swelling stress | |
| CN202471397U (en) | Elastic support parts flexibility tester | |
| CN2632662Y (en) | Elastic component creep tester | |
| CN201716240U (en) | Portable elastomer compression test device for hydrogel | |
| CN208012523U (en) | Exempt to destroy U-shaped strain gauge | |
| Gao et al. | Study on the rheological model of Xuan paper | |
| CN202928900U (en) | Tension-compression creepmeter for wood-plastic composites | |
| Brokans et al. | Behaviour of creep of timber beams under natural environmental conditions | |
| CN105221335A (en) | A kind ofly reduce the shimmy intelligent controller of fan blade and method thereof | |
| Guo et al. | Long-term loading test of reinforced glulam beam | |
| CN203350132U (en) | Tensile dynamometer for adhesive specimen tests | |
| CN203455241U (en) | Material flexural modulus test device for laboratory |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20190213 |