CN107271300A - A kind of experimental rig for studying high strain-rate load bottom tool broken rock dynamics - Google Patents
A kind of experimental rig for studying high strain-rate load bottom tool broken rock dynamics Download PDFInfo
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- CN107271300A CN107271300A CN201710447001.4A CN201710447001A CN107271300A CN 107271300 A CN107271300 A CN 107271300A CN 201710447001 A CN201710447001 A CN 201710447001A CN 107271300 A CN107271300 A CN 107271300A
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- bar
- cutter
- broken rock
- high strain
- rate load
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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
- G01N3/307—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by a compressed or tensile-stressed spring; generated by pneumatic or hydraulic means
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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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
-
- 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
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of experimental rig for studying high strain-rate load bottom tool broken rock dynamics, including Hopkinson pressure bar device and sample support device；The Hopkinson pressure bar device includes hyperbar tank, sub warhead, incident bar, foil gauge, oscillograph and transmission bar, described sub warhead, transmission bar and incident bar are coaxial, sub warhead is connected with high pressure gas holder, one end of sub warhead is set close to one end of incident bar, the other end of incident bar is provided with cutter, foil gauge is respectively equipped with described incident bar and transmission bar, foil gauge is connected with oscillograph respectively；Described sample support device is placed between cutter and transmission bar.The present invention is simple in construction, easy to operate, and different cutter broken rock dynamics experiments under high strain-rate load can be completed very well, has important directive significance for studying mechanical rock-cracking mechanism, improving rig drilling tool and design and seek new crushing technology.
Description
Technical field
The present invention relates to a kind of dynamic rock mechanics experimental rig, high strain-rate load bottom tool is studied more particularly, to one kind
The experimental rig of broken rock dynamics.
Background technology
In recent years, with social development demand and scientific and technological level continuous improvement, underground activities space and all kinds of
The development and utilization of resource has turned into one of field that the mankind pay close attention to.Opened as mechanical rock breaking technology is widely used in mine
Adopt, tunnel piercing, in the process area such as geological prospecting and oil gas drilling, new choose proposed to catalase theory and technology
War.And it is the catalase mechanism in rock excavation and the citation form of mechanical rock breaking, research cutter invasion procedure to invade broken rock
For improving mechanical rock breaking efficiency important role.At present, domestic and foreign scholars are to cutter and rock interaction mechanism, cutter
Further investigation is expanded in terms of calculating, cutterhead optimization design and the penetration performance prediction of broken rock power.However, most of research
The single static pressure experiment of various pressure heads intrusion rocks is all based on, drops hammer or the device such as SHPB enters the experiment of Mobile state broken rock, very
Rare development bulk specimen is tested by high strain-rate load bottom tool broken rock, it is impossible to study different sized samples by high strain-rate load
Bottom tool broken rock dynamic characteristic, so that it cannot cutter laws of rock-breaking is appreciated more fully.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention provides and a kind of simple in construction, easy to operate is used to study Large strain
The experimental rig of rate load bottom tool broken rock dynamics；The experimental rig can complete different under high strain-rate load very well
The experiment of cutter broken rock dynamics, designs for the mechanical rock-cracking mechanism of research, improvement rig drilling tool and seeks new break
Broken technology has important directive significance.
The technical solution adopted by the present invention is：A kind of experiment for studying high strain-rate load bottom tool broken rock dynamics
Device, including Hopkinson pressure bar device and sample support device；The Hopkinson pressure bar device includes hyperbar tank, bullet
Head, incident bar, foil gauge, oscillograph and transmission bar, described sub warhead, transmission bar and incident bar are coaxial, sub warhead and high pressure
Gas tank is connected, and one end of sub warhead is set close to one end of incident bar, and the other end of incident bar is provided with cutter, described incident bar
With foil gauge is respectively equipped with transmission bar, foil gauge is connected with oscillograph respectively；Described sample support device be placed in cutter with
Between transmission bar.
In the experimental rig of above-mentioned research high strain-rate load bottom tool broken rock dynamics, described sample support
Device includes base, expansion link and supporting plate；Expansion link is provided with Telescopic Fixed valve；Insert and be fixedly mounted on base in expansion link lower end
On, upper end is fixedly connected with the bottom surface of supporting plate.
In the experimental rig of above-mentioned research high strain-rate load bottom tool broken rock dynamics, in addition to cutter sleeve
Pipe, cutter sleeve pipe is the column structure that two ends are provided with blind round hole；The blind hole at cutter sleeve pipe two ends is coaxial；One end of cutter sleeve pipe
The end of incident bar is sleeved on, the other end installs cutter.
In the experimental rig of above-mentioned research high strain-rate load bottom tool broken rock dynamics, the cutter sleeve pipe with
The internal diameter of the blind hole of incident bar connection is 50mm；The internal diameter that cutter sleeve pipe installs the blind hole of cutter is 30mm.
In the experimental rig of above-mentioned research high strain-rate load bottom tool broken rock dynamics, supporting plate is by steel plate system
Into its size is 150 mm × 150 mm × 5mm.
In the experimental rig of above-mentioned research high strain-rate load bottom tool broken rock dynamics, under described expansion link
End is welded on base, and the upper end of expansion link is welded on supporting plate bottom.
Compared with prior art, the beneficial effects of the present invention are：Simple in construction, easy to operate, energy of the present invention of the invention
It is enough to complete different cutter broken rock dynamics experiments under high strain-rate load very well, for the mechanical rock-cracking mechanism of research,
Improving the design of rig drilling tool and seeking new crushing technology has important directive significance；The cutter in the present invention fixes dress simultaneously
Cutter of different shapes can be laid by putting, and sample support device passes through adjustable telescopic rod and the height of Telescopic Fixed valve regulation sample
Degree, can be adapted to the rock sample of different sizes so that of the invention is applied widely.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is the structural representation of the cutter sleeve pipe of the present invention.
Fig. 3 is A-A profiles in Fig. 2.
Fig. 4 is B-B profiles in Fig. 2.
In figure：1st, sample；2nd, sub warhead；3rd, incident bar；4th, transmission bar；5th, foil gauge；6th, high pressure gas holder；7th, oscillograph；
8th, base；9th, cutter sleeve pipe；10th, cutter；11st, supporting plate；12nd, expansion link；13rd, Telescopic Fixed valve；14th, bolt.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
As shown in figure 1, the present invention includes Hopkinson pressure bar device, sample support device and cutter 10, Hope's gold
Gloomy strut device is made up of hyperbar tank 6, sub warhead 2, incident bar 3, foil gauge 5, oscillograph 7 and transmission bar 4, described bullet
First 2, transmission bar 4 and incident bar 3 are coaxial, and sub warhead 2 is connected with high pressure gas holder 6, and one end of sub warhead 2 is close to the one of incident bar 3
End is set, and the other end of incident bar 3 is installed by cutter sleeve pipe 9 to be set respectively on cutter 10, described incident bar 3 and transmission bar 4
There is a foil gauge 5, foil gauge 5 is connected with oscillograph 7 respectively.
Described sample support device is placed between cutter 10 and transmission bar 4, for supporting sample 1.Sample support device
Including base 8, expansion link 12 and supporting plate 11；Expansion link 12 is provided with Telescopic Fixed valve 13, can be solid by Telescopic Fixed valve 13
Its fixed length.The lower end of expansion link 12 is inserted and is welded on base 8, and upper end and the bottom surface of supporting plate 11 are welded.Described supporting plate 11 is by steel
Plate is made, and the size of supporting plate 11 is 150 mm × 150 mm × 5mm.
As in Figure 2-4, described cutter sleeve pipe 9 is the cylindrical-shaped structure provided with blind round hole 91,92, and its profile also may be used
To be other prism structures.Blind hole 91, blind hole 92 are coaxial；Blind hole 91, which is sleeved in the end of incident bar 3, blind hole 92, installs cutter
10.The external diameter of cutter sleeve pipe 9 is 55mm, and the internal diameter of blind hole 91 is 50mm, and the internal diameter of blind hole 92 is 30mm.
The present invention is in use, its concrete operations is as follows：
Step 1：Sample support device is fixed on Hopkinson pressure bar device by four bolts 14, sample 1 is placed on support
On plate 11, by cutter 10 by cutter sleeve pipe 9 be arranged on incident bar 3 towards one end of sample 1, make cutter 10 and incident bar 3 into
For an entirety.
Step 2：Sample 1 is clipped between cutter 10 and transmission bar 4, by rotary extension standing valve 13 come adjustable telescopic rod
12 length, makes the center of sample 1 just against cutter 10 and transmission bar 4, and firmly tenses incident bar 3 and transmission bar 4 to press from both sides
Tight sample 1.
Step 3：Check whether the foil gauge 5 on incident bar 3 and transmission bar 4 connects normally, set dynamic air pressure, drive
Sub warhead 2 hits incident bar 3, completes the experiment of high strain-rate load bottom tool broken rock.It is connected by foil gauge 5 with oscillograph 7
To gather high strain-rate load bottom tool broken rock dynamic experiment data.
Claims (6)
1. a kind of experimental rig for studying high strain-rate load bottom tool broken rock dynamics, it is characterised in that：Including Hope
The gloomy strut device of gold and sample support device；The Hopkinson pressure bar device include hyperbar tank, sub warhead, incident bar, should
Become piece, oscillograph and transmission bar, described sub warhead, transmission bar and incident bar is coaxial, and sub warhead is connected with high pressure gas holder, bullet
One end of head is set close to one end of incident bar, and the other end of incident bar, which is provided with cutter, described incident bar and transmission bar, to be divided
Not She You foil gauge, foil gauge is connected with oscillograph respectively；Described sample support device is placed between incident bar and transmission bar.
2. the experimental rig of research high strain-rate load bottom tool broken rock dynamics according to claim 1, it is special
Levy and be：Described sample support device includes base, expansion link and supporting plate；Expansion link is provided with Telescopic Fixed valve；Expansion link
Lower end is inserted and is fixedly mounted on base, and upper end is fixedly connected with the bottom surface of supporting plate.
3. the experimental rig of research high strain-rate load bottom tool broken rock dynamics according to claim 1, it is special
Levy and be：Also include cutter sleeve pipe, cutter sleeve pipe is the column structure that two ends are provided with blind round hole；The blind hole at cutter sleeve pipe two ends
Coaxially；One end of cutter sleeve pipe is sleeved on the end of incident bar, and the other end installs cutter.
4. the experimental rig of research high strain-rate load bottom tool broken rock dynamics according to claim 3, it is special
Levy and be：The internal diameter for the blind hole that the cutter sleeve pipe is connected with incident bar is 50mm；Cutter sleeve pipe installs the interior of the blind hole of cutter
Footpath is 30mm.
5. the experimental rig of research high strain-rate load bottom tool broken rock dynamics according to claim 2, it is special
Levy and be：Supporting plate is made up of steel plate, and its size is 150 mm × 150 mm × 5mm.
6. a kind of experiment dress of research high strain-rate load bottom tool broken rock dynamics according to claim 3 or 4
Put, it is characterised in that：Described expansion link lower end is welded on base, and the upper end of expansion link is welded on supporting plate bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710447001.4A CN107271300A (en) | 2017-06-14 | 2017-06-14 | A kind of experimental rig for studying high strain-rate load bottom tool broken rock dynamics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710447001.4A CN107271300A (en) | 2017-06-14 | 2017-06-14 | A kind of experimental rig for studying high strain-rate load bottom tool broken rock dynamics |
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| Publication Number | Publication Date |
|---|---|
| CN107271300A true CN107271300A (en) | 2017-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710447001.4A Withdrawn CN107271300A (en) | 2017-06-14 | 2017-06-14 | A kind of experimental rig for studying high strain-rate load bottom tool broken rock dynamics |
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| Country | Link |
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| CN (1) | CN107271300A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110579413A (en) * | 2019-06-28 | 2019-12-17 | 天津大学 | variable-rod-diameter Hopkinson pressure bar experiment device and method |
| CN113899634A (en) * | 2021-08-27 | 2022-01-07 | 北京工业大学 | Device and method for evaluating rock breaking efficiency of drill bit teeth under impact load |
| CN115290433A (en) * | 2022-08-05 | 2022-11-04 | 西南石油大学 | High-temperature high-pressure single-tooth impact rock breaking test device and method based on vertical SHPB system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201589742U (en) * | 2009-12-22 | 2010-09-22 | 中国重型机械研究院有限公司 | Rock cutting tool cutting test device |
| CN202693419U (en) * | 2012-08-10 | 2013-01-23 | 湖南科技大学 | Multi-load coupling rock breaking device |
| CN103499505A (en) * | 2013-10-22 | 2014-01-08 | 上海交通大学 | Cutter tooth linear rock cutting testing device |
| CN104535413A (en) * | 2015-01-14 | 2015-04-22 | 中南大学 | Seepage field-temperature field simulation coupling material bin and TBM cutting test stand |
| CN205404320U (en) * | 2016-01-27 | 2016-07-27 | 清华大学 | Experimental device for realize high -speed cutting |
| CN206974804U (en) * | 2017-06-14 | 2018-02-06 | 湖南科技大学 | A kind of experimental rig for impact loading bottom tool broken rock |
-
2017
- 2017-06-14 CN CN201710447001.4A patent/CN107271300A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201589742U (en) * | 2009-12-22 | 2010-09-22 | 中国重型机械研究院有限公司 | Rock cutting tool cutting test device |
| CN202693419U (en) * | 2012-08-10 | 2013-01-23 | 湖南科技大学 | Multi-load coupling rock breaking device |
| CN103499505A (en) * | 2013-10-22 | 2014-01-08 | 上海交通大学 | Cutter tooth linear rock cutting testing device |
| CN104535413A (en) * | 2015-01-14 | 2015-04-22 | 中南大学 | Seepage field-temperature field simulation coupling material bin and TBM cutting test stand |
| CN205404320U (en) * | 2016-01-27 | 2016-07-27 | 清华大学 | Experimental device for realize high -speed cutting |
| CN206974804U (en) * | 2017-06-14 | 2018-02-06 | 湖南科技大学 | A kind of experimental rig for impact loading bottom tool broken rock |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110579413A (en) * | 2019-06-28 | 2019-12-17 | 天津大学 | variable-rod-diameter Hopkinson pressure bar experiment device and method |
| CN113899634A (en) * | 2021-08-27 | 2022-01-07 | 北京工业大学 | Device and method for evaluating rock breaking efficiency of drill bit teeth under impact load |
| CN113899634B (en) * | 2021-08-27 | 2024-05-24 | 北京工业大学 | Device and method for evaluating rock breaking efficiency of drill bit teeth under impact load effect |
| CN115290433A (en) * | 2022-08-05 | 2022-11-04 | 西南石油大学 | High-temperature high-pressure single-tooth impact rock breaking test device and method based on vertical SHPB system |
| CN115290433B (en) * | 2022-08-05 | 2024-08-27 | 西南石油大学 | High-temperature high-pressure single-tooth impact rock breaking test device and method based on vertical SHPB system |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171020 |
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| WW01 | Invention patent application withdrawn after publication |