CN106769483A - Simple loading unit is impacted in creep - Google Patents
Simple loading unit is impacted in creep Download PDFInfo
- Publication number
- CN106769483A CN106769483A CN201710156249.5A CN201710156249A CN106769483A CN 106769483 A CN106769483 A CN 106769483A CN 201710156249 A CN201710156249 A CN 201710156249A CN 106769483 A CN106769483 A CN 106769483A
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- hammer
- pendulum
- guide rail
- test specimen
- steel lever
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0026—Combination of several types of applied forces
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- General Health & Medical Sciences (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention belongs to Geotechnical Engineering field, in particular it relates to a kind of creep impact simple loading unit.Including chassis, support, disk, attachment means, steel lever, loading hook, guide rail, connecting rod, drop hammer, pendulum and hammer stem, it is characterised in that：Described steel lever is fixed on support, and loading hook hangs over steel lever end, and test specimen is placed in the middle of upper and lower disk and is placed horizontally between chassis and steel lever.Described dropping hammer is symmetrically arranged on two with two circular cavities, can the free-falling on guide rail, guide rail is detachable, to change different size of dropping hammer.Described pendulum, using hemisphere in the form of cylinder is combined, near test specimen, cylinder side connects together its shape with one end of hammer stem, detachably, to change different size of pendulum for hemisphere side；The affixed annulus of the hammer stem other end, annulus is enclosed within the connecting rod of draw-in groove, and hammer stem enables pendulum swing by annulus.The present invention realizes the applying of impact load during creep of rock, and device is easy, it is easy to operate.
Description
Technical field
The present invention relates to Geotechnical Engineering field, simple loading unit is impacted in a kind of particularly creep.
Background technology
Rock can not only occur elastic deformation and plastic deformation, the also property with rheology, and creep is exactly one kind of rheology,
Refer to the phenomenon that deformation increases in the case where stress is constant with the increase of time.One of fundamental characteristics as rock mechanics,
Creep of rock all has to the long-time stability and security of Practical Project and interferes significantly on, the unstable failure of rock mass engineering project with
Time relationship proves by substantial amounts of case history and experimental study already closely, therefore, to working as before Practical Project is carried out
It is essential that the rock on ground carries out creep test.
The reciprocation of creep and other factors is often ignored in research both at home and abroad to creep of rock performance at present, and this is obvious
Differ larger with actual conditions, impact load is one of key factor of influence creep of rock.Impact load refers to be exceedingly fast
The blasting procedure conventional when the load, such as tunneling on object is acted within the extremely short time of speed will produce it is huge
Impact load, it will influence rock mass creep rate and deformation, it is therefore necessary to research in the presence of impact load rock
Croop property.
However, most of existing creep testing machine cannot apply impact load in automatic applying test force, directly limit
Croop property research of the rock under Impact Load is made.
The content of the invention
To overcome the deficiencies in the prior art, the present invention to provide a kind of creep impact simple loading unit.
To achieve these goals, the present invention uses following technical proposals：
Simple loading unit, including chassis, support, disk, attachment means, steel lever, loading extension are impacted in creep
Hook, guide rail, connecting rod, drop hammer, pendulum, hammer stem.It is characterized in that：Described steel lever is fixed on support, and loading hook is hung
In steel lever end, test specimen is placed in the middle of upper and lower disk and is placed horizontally between chassis and steel lever, in addition steel
Lever bottom has the attachment means disk and lever is linked to be an entirety, load is fully transmitted.Described both sides of dropping hammer
Be arranged with two circular cavities, can the free-falling on guide rail, guide rail is detachable, to change different size of dropping hammer.It is described
Pendulum, its shape using hemisphere in the form of cylinder is combined, hemisphere side near test specimen, one end of cylinder side and hammer stem
Connect together, detachably, to change different size of pendulum；The affixed annulus of the hammer stem other end, annulus is enclosed within draw-in groove
On connecting rod, hammer stem enables pendulum swing by annulus.
The present invention places counterweight to examination by the easy device being made up of steel lever and loading hook on loading hook
Part applies constant axial compressive force, makes test specimen that creep to occur；Steel lever is clashed into by the free-falling on guide rail of dropping hammer to apply
Axial impact Load, the height on guide rail is dropped hammer in adjustment and quality of dropping hammer controls the size of Axial impact Load；By pendulum
Swing before and after hammer is clashed into test specimen and applies lateral impact load, elemental height when being swung by selecting the quality and pendulum of pendulum
To control the size of lateral impact load；The strain or deformation of test specimen are measured using electric resistance strain film method or deformation-sensor.
Relative to prior art, the present invention has the advantages that：
1st, the present apparatus can realize influencing each other for impact load and creep, and the comprehensive utilization dropped hammer with pendulum makes the dress
Putting can apply Axial impact Load, and lateral impact load can be applied again, more proper with actual.
2nd, during generation creep is compressed axially, load links up with the simple dress for constituting to test specimen by steel lever and loading
Applying is put,, with lever principle as theoretical foundation, the load that will apply by lever expands, and expires in the peak load for ensureing to apply for it
On the premise of sufficient test requirements document, not only required counterweight negligible amounts, and also it is easily operated.
3rd, the shape of pendulum is easy to fully apply lateral impact load using cylinder in the form of hemisphere is combined.
Brief description of the drawings
Fig. 1：Simple loading unit constitutional diagram is impacted in creep.
In figure：1. connecting rod, 2. drops hammer, 3. support, 4. disk, 5. pendulum, 6. chassis, 7. hammer stem, 8. guide rail, 9. connects
Connection device, 10. steel lever, 11. loading hooks, 12. test specimens.
Specific embodiment
The present invention is further described below in conjunction with the accompanying drawings.
As shown in figure 1, creep impact simple loading unit, including 1. connecting rods, 2. drop hammer, 3. support, 4. disk, 5. put
Hammer into shape, 6. chassis, 7. hammer stem, 8. guide rail, 9. attachment means, 10. steel lever, 11. loading hooks, 12. test specimens.Its feature
It is：Described steel lever 10 is fixed on support 3, and loading hook 11 hangs over the end of steel lever 10, test specimen 12 is placed in,
The centre of lower disc 4 is simultaneously placed horizontally between chassis 6 and steel lever 10, and an attachment means are arranged at the bottom of steel lever 10 in addition
9 make disk 4 be linked to be an entirety with lever 10, load is fully transmitted.Described dropping hammer 2 is symmetrically arranged on two with two holes
Hole, can the free-falling on guide rail 8, guide rail 8 is detachable, and different size of 2 are dropped hammer to change.Described pendulum 5, its shape
Using hemisphere in the form of cylinder is combined, hemisphere side is connected in one to shape near test specimen 12, cylinder side with one end of hammer stem 7
Rise, detachably, to change different size of pendulum 5；The affixed annulus of the other end of hammer stem 7, annulus is enclosed within connecting rod 1, connecting rod 1
On be carved with circular draw-in groove, hammer stem 7 enables pendulum 5 around the swing of connecting rod 1 by annulus, by adjusting the company of snapping in of hammer stem 7
The position of draw-in groove can adjust the position that horizontal impact acts on test specimen 12 in bar 1.
The present invention places weight by the easy device being made up of steel lever 10 and loading hook 11 on loading hook 11
Code applies constant axial compressive force to test specimen 12, makes test specimen 12 that creep to occur；By the 2 free-falling shocks on guide rail 8 of dropping hammer
Steel lever 10 applies Axial impact Load, and 2 height on guide rail 8 are dropped hammer in adjustment and 2 mass of dropping hammer control axial impact
The size of load；Test specimen is clashed into by swing before and after pendulum 5 and applies lateral impact load, by select pendulum 5 quality and
Elemental height when pendulum 5 swings controls the size of lateral impact load.
Claims (2)
1. creep impact simple loading unit, including chassis, support, disk, attachment means, steel lever, loading hook,
Guide rail, connecting rod, drop hammer, pendulum, hammer stem, it is characterised in that：Described steel lever is fixed on support, and loading hook hangs over steel
Lever end processed, test specimen is placed in the middle of upper and lower disk and is placed horizontally between chassis and steel lever, in addition steel lever
Bottom has the attachment means disk and lever is linked to be an entirety, load is fully transmitted.Described both sides of dropping hammer are symmetrical
Be provided with two circular cavities, can the free-falling on guide rail, guide rail is detachable, to change different size of dropping hammer.Described pendulum
Hammer, using hemisphere in the form of cylinder is combined, near test specimen, cylinder side is connected in its shape with one end of hammer stem for hemisphere side
Together, detachably, changing different size of pendulum；The affixed annulus of the hammer stem other end, annulus is enclosed within the connecting rod of draw-in groove
On, hammer stem enables pendulum swing by annulus.
2. simple loading unit is impacted in creep according to claim 1, it is characterised in that by by steel lever and loading
The easy device of composition is linked up with, place counterweight on loading hook applies constant axial compressive force to test specimen, test specimen occurs compacted
Become；Steel lever is clashed into by the free-falling on guide rail of dropping hammer and applies Axial impact Load, adjust the height on guide rail that drops hammer
Quality is spent and drops hammer to control the size of Axial impact Load；Test specimen is clashed into by the swing before and after pendulum and applies lateral impact lotus
Carry, elemental height when being swung by selecting the quality and pendulum of pendulum controls the size of lateral impact load；Using resistance
Strain gauge method or deformation-sensor measure the strain or deformation of test specimen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710156249.5A CN106769483B (en) | 2017-03-16 | 2017-03-16 | Simple loading unit is impacted in creep |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710156249.5A CN106769483B (en) | 2017-03-16 | 2017-03-16 | Simple loading unit is impacted in creep |
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| Publication Number | Publication Date |
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| CN106769483A true CN106769483A (en) | 2017-05-31 |
| CN106769483B CN106769483B (en) | 2019-05-03 |
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| CN201710156249.5A Active CN106769483B (en) | 2017-03-16 | 2017-03-16 | Simple loading unit is impacted in creep |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732043A (en) * | 2018-05-03 | 2018-11-02 | 山东科技大学 | A kind of deep rock mass creep impact test apparatus for simulating shock vibration |
| CN108896415A (en) * | 2018-05-03 | 2018-11-27 | 山东科技大学 | A kind of rock mass creep impact test method |
| CN111398073A (en) * | 2020-02-26 | 2020-07-10 | 辽宁工业大学 | Test device and method for simulating CFRP (carbon fiber reinforced plastics) reinforced coal sample impact disturbance |
| CN118483081A (en) * | 2024-07-16 | 2024-08-13 | 中国矿业大学 | Auxiliary rock breaking experimental device for drop hammer striking hub type cutter |
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| JPS5871432A (en) * | 1981-10-23 | 1983-04-28 | Odakyu Kensetsu Kk | Soil test method |
| CN1553162A (en) * | 2003-08-21 | 2004-12-08 | 株洲时代新材料科技股份有限公司 | Elastic element creep testing method and tester thereof |
| CN1948945A (en) * | 2006-10-24 | 2007-04-18 | 中国矿业大学(北京) | Material flowing deformation disturbed effect testing system and testing method thereof |
| CN102519699A (en) * | 2011-12-12 | 2012-06-27 | 中联重科股份有限公司 | Falling object impact test device and cab comprehensive test system |
| CN102749250A (en) * | 2012-07-06 | 2012-10-24 | 四川大学 | Uniaxial-creep testing machine |
| CN104181029A (en) * | 2014-07-22 | 2014-12-03 | 东北大学 | Device and method for testing looseness of rock under disturbance of strain rate in loading process of pendulum bob |
| CN104568364A (en) * | 2015-01-12 | 2015-04-29 | 中国航天员科研训练中心 | Multifunctional drop hammer test stand |
| CN205620220U (en) * | 2016-04-07 | 2016-10-05 | 中国矿业大学(北京) | Two -way restraint charpy impact power loading test device of coal petrography |
| CN106226174A (en) * | 2016-09-22 | 2016-12-14 | 青岛科技大学 | A kind of soft rock experiment creep measurement device |
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2017
- 2017-03-16 CN CN201710156249.5A patent/CN106769483B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5871432A (en) * | 1981-10-23 | 1983-04-28 | Odakyu Kensetsu Kk | Soil test method |
| CN1553162A (en) * | 2003-08-21 | 2004-12-08 | 株洲时代新材料科技股份有限公司 | Elastic element creep testing method and tester thereof |
| CN1948945A (en) * | 2006-10-24 | 2007-04-18 | 中国矿业大学(北京) | Material flowing deformation disturbed effect testing system and testing method thereof |
| CN102519699A (en) * | 2011-12-12 | 2012-06-27 | 中联重科股份有限公司 | Falling object impact test device and cab comprehensive test system |
| CN102749250A (en) * | 2012-07-06 | 2012-10-24 | 四川大学 | Uniaxial-creep testing machine |
| CN104181029A (en) * | 2014-07-22 | 2014-12-03 | 东北大学 | Device and method for testing looseness of rock under disturbance of strain rate in loading process of pendulum bob |
| CN104568364A (en) * | 2015-01-12 | 2015-04-29 | 中国航天员科研训练中心 | Multifunctional drop hammer test stand |
| CN205620220U (en) * | 2016-04-07 | 2016-10-05 | 中国矿业大学(北京) | Two -way restraint charpy impact power loading test device of coal petrography |
| CN106226174A (en) * | 2016-09-22 | 2016-12-14 | 青岛科技大学 | A kind of soft rock experiment creep measurement device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732043A (en) * | 2018-05-03 | 2018-11-02 | 山东科技大学 | A kind of deep rock mass creep impact test apparatus for simulating shock vibration |
| CN108896415A (en) * | 2018-05-03 | 2018-11-27 | 山东科技大学 | A kind of rock mass creep impact test method |
| CN108732043B (en) * | 2018-05-03 | 2024-01-30 | 山东科技大学 | Deep rock mass creep impact test device capable of simulating impact disturbance |
| CN111398073A (en) * | 2020-02-26 | 2020-07-10 | 辽宁工业大学 | Test device and method for simulating CFRP (carbon fiber reinforced plastics) reinforced coal sample impact disturbance |
| CN111398073B (en) * | 2020-02-26 | 2023-05-05 | 辽宁工业大学 | CFRP reinforced coal sample impact disturbance simulation test device and method |
| CN118483081A (en) * | 2024-07-16 | 2024-08-13 | 中国矿业大学 | Auxiliary rock breaking experimental device for drop hammer striking hub type cutter |
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|---|---|
| CN106769483B (en) | 2019-05-03 |
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