CN103645100A - Single-tooth single-impact rock crushing experimental device - Google Patents

Single-tooth single-impact rock crushing experimental device Download PDF

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Publication number
CN103645100A
CN103645100A CN201310681262.4A CN201310681262A CN103645100A CN 103645100 A CN103645100 A CN 103645100A CN 201310681262 A CN201310681262 A CN 201310681262A CN 103645100 A CN103645100 A CN 103645100A
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China
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impact
leveling
pressure head
experimental provision
rock
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CN201310681262.4A
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CN103645100B (en
Inventor
周琴
刘宝林
王瑜
张蔚
卢彤
邹俊
古卫鹏
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China University of Geosciences
China University of Geosciences Beijing
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China University of Geosciences Beijing
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Abstract

The invention provides a single-tooth single-impact rock crushing experimental device. The single-tooth single-impact rock crushing experimental device comprises a drop-hammer impact loading unit, a base and a data acquisition unit, wherein the drop-hammer impact loading unit comprises a vertical guide rail, an impact hammer, a tapered sleeve, a spring, a tapered pressing block, a pressing head and a pressing head fixed seat; the impact hammer is arranged on the guide rail in a sliding manner; the tapered sleeve comprises an upper strengthening cylinder and a lower cone; the upper strengthening cylinder is internally provided with the spring; the lower end of a resin track is inserted into the upper strengthening cylinder; the lower cone is sleeved above the tapered pressing block; the pressing head fixed seat is arranged below the tapered pressing block; the pressing head is mounted on the bottom face of the pressing head fixed seat; the data acquisition unit is arranged between the tapered pressing block and the pressing head fixed seat; the base is arranged below the pressing head. The single-tooth single-impact rock crushing experimental device is simple in structure and convenient to operate; the experimental device is used for researching a single-tooth singe-time rock crushing condition under a low power consumption condition and provides experimental evidence for a drill bit single-tooth structure, rock crushing power consumption, effective range of lunar surface impact loads and the like.

Description

Monodentate single-impact detritus experimental provision
Technical field
The present invention relates to a kind of experimental provision of wanting for testing rock impact detritus, relate in particular to the monodentate single-impact detritus experimental provision under a kind of low-power consumption condition.
Background technology
In the prior art, impacting detritus experimental provision is mainly for the detritus experiment under large impact energy effect, for oil drilling and geological drilling field.In impulse test, the motion of block stamp great majority adopt hydraulic system or pneumatic mode to realize.Because ballistic work is large, experimental provision is had relatively high expectations, complex structure, one-piece construction size is larger, and cost is higher, manufactures and install inconvenient.
Moon surface hole drilling is cored to be had and is strict with and restriction power consumption, and existing impact experiment apparatus can not meet the detritus research under low-power consumption condition, the impact detritus requirement of experiment of the monodentate under particularly low-power consumption condition and word.
Summary of the invention
The deficiency existing for prior art, the object of the present invention is to provide a kind of simple in structure, easy to operate monodentate single-impact detritus experimental provision, with the monodentate single detritus situation under research low-power consumption condition, simultaneously for drill bit monodentate structure, power expense for rock fragmentation, menology shock load effective range etc. provide experimental basis.
For achieving the above object, the invention provides a kind of monodentate single-impact detritus experimental provision, comprise drop impact loading unit, base and data acquisition unit, described drop impact loading unit comprises upright guide rail, block stamp, tapered sleeve cylinder, spring, taper briquetting, pressure head and pressure head holder, described block stamp is slidably arranged on described guide rail, described tapered sleeve cylinder comprises righting cylinder and slower conical tube, on described, in righting cylinder, be provided with spring, the lower end of described resin track is inserted in described upper righting cylinder, described slower conical tube is enclosed within the top of described taper briquetting, the below of described taper briquetting is pressure head holder, described pressure head is arranged on the bottom surface of described pressure head holder, described data acquisition unit is arranged between described taper briquetting and described pressure head holder, described base is arranged on the below of described pressure head.
Preferably, also comprising that rock sample adds holds unit, described rock sample adds to be held unit and is arranged on described base, described rock sample adds to be held unit and comprises rock splendid attire vessel and at least three hold-down bolts, the insertion end of every described hold-down bolt all enters in the chamber of described rock splendid attire vessel through the sidewall of described rock splendid attire vessel, angle between adjacent two described bolts is all identical, and described hold-down bolt is connected with the sidewall thread of described rock splendid attire vessel.
Preferably, described base is a rectangular platform, is provided with suspension column below described rectangular platform, and described suspension column is scalable suspension column, and described scalable suspension column is four, and four described scalable suspension columns are distributed in four jiaos of described rectangular platform.
Preferably, also comprise leveling unit, described leveling unit comprises horizontal leveling chi, vertical leveling chi, support column and leveling sleeve, described horizontal leveling chi and described vertical leveling chi are all arranged on described support column, described support column is vertically arranged on described base, described leveling sleeve is arranged on described upright guide rail upper end, between described leveling sleeve and described support column, by horizontal gird, links together.
Preferably, described pressure head is sphenocephaly, round end or tip.
Preferably, described hold-down bolt is four, and the angle between adjacent two described hold-down bolts is 90 °.
Preferably, also comprise holding screw, described holding screw is arranged on described leveling cartridges sides, and described holding screw is threaded with described leveling sleeve lateral wall, and the tip of described holding screw screws in described leveling sleeve lateral wall and withstands described guide rail.
Preferably, described holding screw is two, and a described holding screw is arranged on the upper part of described leveling cartridges sides, and described in another, holding screw and its mirror image are arranged on the lower part of described leveling cartridges sides.
Preferably, described rock splendid attire vessel bottom has a concave step hole.
Monodentate single-impact detritus experimental provision provided by the invention is simple in structure, easy to operate, this experimental provision is for studying the monodentate single detritus situation under low-power consumption condition, for drill bit monodentate structure, power expense for rock fragmentation, menology shock load effective range etc. provide experimental basis.
Accompanying drawing explanation
Fig. 1 is the structural representation of monodentate single-impact detritus experimental provision of the present invention;
Fig. 2 is the plan structure schematic diagram of the rock splendid attire vessel of monodentate single-impact detritus experimental provision of the present invention;
Fig. 3 is a kind of structural representation of embodiment of the pressure head of monodentate single-impact detritus experimental provision of the present invention;
Fig. 4 is the structural representation of another kind of embodiment of the pressure head of monodentate single-impact detritus experimental provision of the present invention;
Fig. 5 is the structural representation of another embodiment of the pressure head of monodentate single-impact detritus experimental provision of the present invention;
Fig. 6 is the structural representation that in Fig. 1, in circle, selected part is amplified.
In figure: 1-base, 2-data acquisition unit, 3-upright guide rail, 4-block stamp, 5-tapered sleeve cylinder, 6-spring, 7-taper briquetting, 8-pressure head, 9-pressure head holder, 10-rock splendid attire vessel, 11-hold-down bolt, the scalable suspension column of 12-, the horizontal leveling chi of 13-, the vertical leveling chi of 14-, 15-leveling sleeve, 16-holding screw, 17-horizontal gird.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further:
Please refer to Fig. 1 and Fig. 6, Fig. 1 is a kind of structural representation of embodiment of the pressure head of monodentate single-impact detritus experimental provision of the present invention, and Fig. 6 is the structural representation that in Fig. 1, in circle, selected part is amplified.
A kind of monodentate single-impact detritus experimental provision, comprise drop impact loading unit, base 1 and data acquisition unit 2, described drop impact loading unit comprises upright guide rail 3, block stamp 4, tapered sleeve cylinder 5, spring 6, taper briquetting 7, pressure head 8 and pressure head holder 9, described block stamp 4 is slidably arranged on described guide rail, described tapered sleeve cylinder 5 comprises righting cylinder and slower conical tube, on described, in righting cylinder, be provided with spring 6, the lower end of described resin track is inserted in described upper righting cylinder, described slower conical tube is enclosed within the top of described taper briquetting 7, the below of described taper briquetting 7 is pressure head holder 9, described pressure head 8 is arranged on the bottom surface of described pressure head holder 9, described data acquisition unit 2 is arranged between described taper briquetting 7 and described pressure head holder 9, described base 1 is arranged on the below of described pressure head 8.Rate of tension by regulating spring 6 regulates the pretightning force between pressure head 8 and rock sample, the cylinder chamber height of upper righting cylinder is guaranteed the centralizing function to upright guide rail 3, slower conical tube coordinates with the inclined-plane between taper briquetting 7, guarantee that pressure transmission is even, by the shock component that slower conical tube is downward, taper briquetting 7 is exerted pressure, the shock component straight down producing while regulating block stamp 4 to fall to the change of the inclined-plane degree of tilt of slower conical tube and taper briquetting 7.
Please refer to Fig. 2, Fig. 2 is the plan structure schematic diagram of the rock splendid attire vessel of monodentate single-impact detritus experimental provision of the present invention.
Also comprising that rock sample adds holds unit, described rock sample adds to be held unit and is arranged on described base 1, described rock sample adds to be held unit and comprises rock splendid attire vessel 10 and at least three hold-down bolts 11, the insertion end of every described hold-down bolt 11 all enters in the chamber of described rock splendid attire vessel 10 through the sidewall of described rock splendid attire vessel 10, angle between adjacent two described bolts is all identical, and described hold-down bolt 11 is connected with the sidewall thread of described rock splendid attire vessel 10.During application, rock sample is prevented in rock splendid attire vessel 10, screw in 11 pairs of rock samples of hold-down bolt and be fixed, the concave step hole of rock splendid attire vessel 10 bottoms can make the part that protrude rock sample bottom block, auxiliary fixedly rock sample.
Described base 1 is a rectangular platform, is provided with suspension column below described rectangular platform, and described suspension column is scalable suspension column 12, and described scalable suspension column 12 is four, and four described scalable suspension columns 12 are distributed in four jiaos of described rectangular platform.By regulating stretching out of four scalable suspension columns 12 highly to regulate upright guide rail 3, ground and rock sample stress point three's horizontal vertical position, guarantee that block stamp 4 is done the component producing man-hour downwards fully consistent with the value of calculating expection.
Also comprise leveling unit, described leveling unit comprises horizontal leveling chi 13, vertical leveling chi 14, support column and leveling sleeve 15, described horizontal leveling chi 13 and described vertical leveling chi 14 are all arranged on described support column, described support column is vertically arranged on described base 1, described leveling sleeve 15 is arranged on described upright guide rail 3 upper ends, between described leveling sleeve 15 and described support column, by horizontal gird 17, links together.The Main Function of leveling unit mainly provides the vertical information of real-time level of package unit, and the information showing by horizontal leveling chi 13, vertical leveling chi 14 regulates scalable suspension column 12, and then the Integral levelling of complete twin installation.
Please refer to Fig. 3-Fig. 5, Fig. 3 is a kind of structural representation of embodiment of the pressure head of monodentate single-impact detritus experimental provision of the present invention, Fig. 4 is the structural representation of another kind of embodiment of the pressure head of monodentate single-impact detritus experimental provision of the present invention, and Fig. 5 is the structural representation of another embodiment of the pressure head of monodentate single-impact detritus experimental provision of the present invention.
Described pressure head 8 is sphenocephaly, round end or tip.Several pressure heads 8 in the corresponding practical application of shape of pressure head 8, adopt different types of pressure head 8 according to the hardness of rock sample, and wherein round end is applicable to the rock sample of high rigidity, and sphenocephaly is applicable to medium-hard rock sample, and tip is applicable to compared with the rock sample of soft durometer.
Described hold-down bolt 11 is four, and the angle between adjacent two described hold-down bolts 11 is 90 °.The quantity of hold-down bolt 11 is mainly to determine for the regular degree of specimen shape, even a plurality ofly all can for three or four, rotate rock sample and make the rock sample that steps up that hold-down bolt 11 can be the most firm, reduce probability and amplitude that relative motion occurs between rock sample and rock splendid attire vessel 10 while impacting.
Also comprise holding screw 16, described holding screw 16 is arranged on described leveling sleeve 15 sides, described holding screw 16 is connected with described leveling sleeve 15 sidewall thread, and the tip of described holding screw 16 screws in described leveling sleeve 15 sidewalls and withstands described upright guide rail 3.Described holding screw 16 is two, and a described holding screw 16 is arranged on the upper part of described leveling sleeve 15 sides, and described in another, holding screw 16 and its mirror image are arranged on the lower part of described leveling sleeve 15 sides.It is relative static that holding screw 16 makes to keep between leveling sleeve 15 and upright guide rail 3, in the time of need to strengthening the decline displacement of block stamp 4, unclamp holding screw 16, upwards mention leveling sleeve 15, when upright guide rail 3 displacements enough meet the displacement of block stamp 4 needs whereabouts, again screw in 16 pairs of leveling sleeves 15 of holding screw and be fixed.
The principle of work of monodentate single-impact detritus experimental provision:
Rock sample adds to be held unit rock sample is fixed, and unclamps impact displacement, scalable suspension column 12 that holding screw 16 regulates upright guide rails 3 can offer block stamp 4 and regulates vertical between vertical, ground between upright guide rail 3 and rock sample and upright guide rail 3; After leveling finishes, the size of the power by needs, regulates the impact displacement of block stamp 4, by the degree of tilt of slower conical tube and taper briquetting 7; 2 pairs of each informations that impact to produce of data acquisition unit are to do experimental analysis.
Above-described embodiment is only for the invention example is clearly described, and the not restriction to the invention embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.All any apparent variations of being extended out within the spirit and principles in the present invention or change are still among the protection domain in the invention claim.

Claims (9)

1. a monodentate single-impact detritus experimental provision, it is characterized in that, comprise drop impact loading unit, base and data acquisition unit, described drop impact loading unit comprises upright guide rail, block stamp, tapered sleeve cylinder, spring, taper briquetting, pressure head and pressure head holder, described block stamp is slidably arranged on described guide rail, described tapered sleeve cylinder comprises righting cylinder and slower conical tube, on described, in righting cylinder, be provided with spring, the lower end of described resin track is inserted in described upper righting cylinder, described slower conical tube is enclosed within the top of described taper briquetting, the below of described taper briquetting is pressure head holder, described pressure head is arranged on the bottom surface of described pressure head holder, described data acquisition unit is arranged between described taper briquetting and described pressure head holder, described base is arranged on the below of described pressure head.
2. monodentate single-impact detritus experimental provision according to claim 1, it is characterized in that, also comprising that rock sample adds holds unit, described rock sample adds to be held unit and is arranged on described base, described rock sample adds to be held unit and comprises rock splendid attire vessel and at least three hold-down bolts, the insertion end of every described hold-down bolt all enters in the chamber of described rock splendid attire vessel through the sidewall of described rock splendid attire vessel, angle between adjacent two described bolts is all identical, and described hold-down bolt is connected with the sidewall thread of described rock splendid attire vessel.
3. monodentate single-impact detritus experimental provision according to claim 2, it is characterized in that, described base is a rectangular platform, below described rectangular platform, be provided with suspension column, described suspension column is scalable suspension column, described scalable suspension column is four, and four described scalable suspension columns are distributed in four jiaos of described rectangular platform.
4. monodentate single-impact detritus experimental provision according to claim 3, it is characterized in that, also comprise leveling unit, described leveling unit comprises horizontal leveling chi, vertical leveling chi, support column and leveling sleeve, described horizontal leveling chi and described vertical leveling chi are all arranged on described support column, described support column is vertically arranged on described base, and described leveling sleeve is arranged on described upright guide rail upper end, between described leveling sleeve and described support column, by horizontal gird, links together.
5. according to the arbitrary described monodentate single-impact detritus experimental provision of claim 1-4, it is characterized in that, described pressure head is sphenocephaly, round end or tip.
6. monodentate single-impact detritus experimental provision according to claim 2, is characterized in that, described hold-down bolt is four, and the angle between adjacent two described hold-down bolts is 90 °.
7. monodentate single-impact detritus experimental provision according to claim 4, it is characterized in that, also comprise holding screw, described holding screw is arranged on described leveling cartridges sides, described holding screw is threaded with described leveling sleeve lateral wall, and the tip of described holding screw screws in described leveling sleeve lateral wall and withstands described guide rail.
8. monodentate single-impact detritus experimental provision according to claim 7, it is characterized in that, described holding screw is two, a described holding screw is arranged on the upper part of described leveling cartridges sides, and described in another, holding screw and its mirror image are arranged on the lower part of described leveling cartridges sides.
9. according to the monodentate single-impact detritus experimental provision described in claim 2 or 6, it is characterized in that, described rock splendid attire vessel bottom has a concave step hole.
CN201310681262.4A 2013-12-12 2013-12-12 Monodentate single-impact detritus experimental provision Expired - Fee Related CN103645100B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108169038A (en) * 2018-01-11 2018-06-15 山东建筑大学 A kind of major diameter drill bit impact broken rock detection device
CN111929181A (en) * 2020-07-24 2020-11-13 中煤科工集团西安研究院有限公司 Impact rock breaking mechanism test device
CN114166666A (en) * 2021-11-25 2022-03-11 中国科学院兰州化学物理研究所 Steel wire rope impact friction simulation test system

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1190236A1 (en) * 1984-06-13 1985-11-07 Коммунарский горно-металлургический институт Arrangement for rock strength testing
CN2045851U (en) * 1988-12-29 1989-10-11 地质矿产部探矿工程研究所 Shock resistance toughness assay apparatus
SU1682879A1 (en) * 1987-12-18 1991-10-07 Брестский инженерно-строительный институт Hardness gauge
CN2121693U (en) * 1992-04-01 1992-11-11 廖素平 Power load rate table
CN1378075A (en) * 2001-04-04 2002-11-06 中国科学院金属研究所 Impression producing device for fixed point
CN201680981U (en) * 2010-03-05 2010-12-22 广东工业大学 Impact property testing unit of rock drilling impactor
CN102393335A (en) * 2011-08-16 2012-03-28 哈尔滨工业大学 Injection type road surface shallow strength detector
CN102589925A (en) * 2012-01-10 2012-07-18 中国地质大学(北京) Ultrasonic excitation impact space sampling drill
CN102937554A (en) * 2012-11-13 2013-02-20 中南大学 High-stress rock drilling testing device
CN203672728U (en) * 2013-12-12 2014-06-25 中国地质大学(北京) Single-tooth once crushed rock impact experimental device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1190236A1 (en) * 1984-06-13 1985-11-07 Коммунарский горно-металлургический институт Arrangement for rock strength testing
SU1682879A1 (en) * 1987-12-18 1991-10-07 Брестский инженерно-строительный институт Hardness gauge
CN2045851U (en) * 1988-12-29 1989-10-11 地质矿产部探矿工程研究所 Shock resistance toughness assay apparatus
CN2121693U (en) * 1992-04-01 1992-11-11 廖素平 Power load rate table
CN1378075A (en) * 2001-04-04 2002-11-06 中国科学院金属研究所 Impression producing device for fixed point
CN201680981U (en) * 2010-03-05 2010-12-22 广东工业大学 Impact property testing unit of rock drilling impactor
CN102393335A (en) * 2011-08-16 2012-03-28 哈尔滨工业大学 Injection type road surface shallow strength detector
CN102589925A (en) * 2012-01-10 2012-07-18 中国地质大学(北京) Ultrasonic excitation impact space sampling drill
CN102937554A (en) * 2012-11-13 2013-02-20 中南大学 High-stress rock drilling testing device
CN203672728U (en) * 2013-12-12 2014-06-25 中国地质大学(北京) Single-tooth once crushed rock impact experimental device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108169038A (en) * 2018-01-11 2018-06-15 山东建筑大学 A kind of major diameter drill bit impact broken rock detection device
CN108169038B (en) * 2018-01-11 2024-01-19 山东建筑大学 Large-diameter drill bit impact rock breaking detection device
CN111929181A (en) * 2020-07-24 2020-11-13 中煤科工集团西安研究院有限公司 Impact rock breaking mechanism test device
CN111929181B (en) * 2020-07-24 2023-04-28 中煤科工集团西安研究院有限公司 Impact rock crushing mechanism test device
CN114166666A (en) * 2021-11-25 2022-03-11 中国科学院兰州化学物理研究所 Steel wire rope impact friction simulation test system
CN114166666B (en) * 2021-11-25 2024-08-09 中国科学院兰州化学物理研究所 Steel wire rope impact friction simulation test system

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