CN104596856A - Uniaxial tension compression system - Google Patents
Uniaxial tension compression system Download PDFInfo
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- CN104596856A CN104596856A CN201510022897.2A CN201510022897A CN104596856A CN 104596856 A CN104596856 A CN 104596856A CN 201510022897 A CN201510022897 A CN 201510022897A CN 104596856 A CN104596856 A CN 104596856A
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Abstract
The invention discloses a uniaxial tension compression system. A hydraulic cylinder (7) is arranged just above a lower pressure head 6; a loading head (8) is arranged at the lower end of a piston of the hydraulic cylinder (7); a probe of a linear variable differential transformer (9) is downwards vertical and is contacted with the upper end of the piston of the hydraulic cylinder (7); the oil inlet of a servo valve (11) is connected with the oil outlet of a variable plunger type hydraulic pump (18); the oil return outlet of the servo valve (11) is connected with the oil return port of the variable plunger type hydraulic pump (18); a branch pipe (26) is connected to a second oil pipe (17'); the branch pipe (26) is connected with an oil nozzle (24) at the bottom of an energy accumulator shell (20); a capsule bag (22) is arranged in the energy accumulator shell (20); and the exterior of the capsule bag (22) is filled with hydraulic oil (25). According to the system disclosed by the invention, a fixture stress concentration effect is avoided, a test piece is completely in a stretched state in the test process, which is consistent with the experimental purpose, and the acquired test data is very intuitive, real and reliable.
Description
Technical field
The present invention relates to a kind of single shaft tensile compression test system, the tensile strength for rock is tested.
Background technology
Tensile strength is one of important mechanical performance index of rock, is also the Controlling parameters that in rock texture design, safety and stablization are analyzed.Tensile Strength of Rock resists the ability of tension under referring to the effect of rock sample outer load, be the ultimate load of rock sample when fail in tension and the ratio of cross section under tension area.Since reform and opening-up, the develop rapidly of building along with China's economic, has built the engineerings such as a lot of large-scale bridge, tunnel, dam and skyscraper.In engineering construction, often can run into rock type materials, its tensile strength mechanical performance index is design, checks, controls and pass judgment on an important evidence of quality.Tensile Strength of Rock is one of important technological parameters of rock engineering architectural design, Tensile Strength of Rock test conventional at present has uniaxial tensile test, Brazilian diametral compression test, three point loading bending tests, and this several conventional test method has all been written into national regulation.
1, uniaxial direct tensile
The uniaxial direct tensile of rock and the uniaxial direct tensile Measures compare of metal material similar, first test specimen is processed into cylindrical, again middle part is cut, make the standard specimen that middle thin two ends are thick, then stretch with the two ends that fixture clamps test specimen, stress when test specimen is pulled off is the tensile strength sigma t of rock.
Wherein: the pulling force (KN) when P mono-test specimen is pulled off;
F-test specimen cross-sectional area (cm2).
It has been generally acknowledged that the result of direct tensile test meets the actual pulled condition of rock more, but because the rock sample for direct tensile test is difficult to processing, because rock belongs to hard brittle material, the cylindrical specimens being processed into dumbbell shaped is more time-consuming, and the yield rate processed is very low, be difficult to the pulling force of fixture to keep overlapping with the axis of test specimen simultaneously.Therefore, consider that above-mentioned direct tensile test is simple not in actual mechanical process, so adopt the method for Indirect Tensile Tests as tensile test under normal circumstances.
2, Brazilian test
Disk diametral compression test is also known as Brazilian test (Brazilian test), traditional test method is by the disc shaped test piece through processing, between the bearing plate being positioned over pressing machine, and between sample and upper and lower bearing plate, respectively place a diameter be that the hard steel wire of 1mm is as filler strip.Filler strip is positioned on the axial plane of symmetry vertical with sample end face, and applied pressure can be become line load by it, to make the generation of sample inside perpendicular to the tension in upper and lower load action direction.Sample is destroyed because of tension, its tensile strength can be asked by formula.
The tensile strength (negative sign is tension) of sample can be expressed as
In formula: σ t is Tensile Strength of Rock, L is specimen length (thickness), and D is diameter, and Pt is failing load.
But the condition of the experiment condition of Brazilian test and rock bearing tension damage has very big-difference, its result also stretches with direct tradition very big-difference, so the reliability of the test findings of Brazilian test is subject to the query of academia always.The discreteness of Brazilian test is very large in addition, is inapplicable for the test that repeatability is less.
In rock mechanics field, about much less is wanted in the research of the research specific compress strength of tensile strength.Because rock is be in pressured state in most of occasion, therefore compression strenght is relatively more important in practical.But fail in compression phenomenon, analyzes from microcosmic angle, can know and also produce tension stress at the annex in crack.On a macro scale, even fail in compression, the development in the crack also caused to tension stress is to a great extent relevant.Therefore, the research of pulling strengrth and the research of compression strenght have and contact closely, and are expected the development of the research along with both, the comparison of result and analysis, thus give to resolve and explanation to breakoff phenomenon.In addition, the development and utilization of the underground space from now on, will inevitably relate to some extensive, complex-shaped hypogees, and this just occurs that rock is in the situation of tension in local most probably.This also enhances the necessity of relevant pulling strengrth research to a certain extent.
Single shaft tensile compression test system is engaged in one of relevant fundamental research equipment of rock mechanics, and uniaxial direct tensile method is considered to the best method of study of rocks stretcher strain characteristic, under being used in tension, the mechanical property research of rock etc.Quantity and large-scale, structure and circumstance complication, the problem relating to crack propagation and deformation failure thereof in rock under action of pulling stress is more and more many, continues along in order to consider that compressive stress state is that main mechanical models for rocks and failure criteria can not meet actual requirement of engineering completely.The mechanical models for rocks of Distortion Disciplinarian and failure criteria pole imperfection under action of pulling stress, the test figure of Associated Rocks stretching aspect is very limited, in the urgent need to carrying out the research of deformation failure characteristic under action of pulling stress.
Summary of the invention
Technical matters to be solved by this invention is to provide the single shaft tensile compression test system that a kind of structure is simple, accuracy is good.
Technical scheme of the present invention is as follows: a kind of single shaft tensile compression test system, there is fixed mount (1), its key is: arrange lower location-plate (2) at the top of described fixed mount (1), the top of this lower location-plate (2) is supported with location-plate (4) by counter-force post (3), in the central authorities of described lower location-plate (2) end face, dynamometer (5) is installed, push-down head (6) dynamometer (5) is equipped with, hydraulic cylinder (7) is set directly over described push-down head (6), this hydraulic cylinder (7) is installed on location-plate (4), the lower end of hydraulic cylinder (7) piston is provided with loading head (8), this loading head (8) is positioned at the below of location-plate (4) also just to described push-down head (6), linear variable differential transformer (LVDT) (9) is provided with directly over described hydraulic cylinder (7), this linear variable differential transformer (LVDT) (9) is arranged on the cylinder body of hydraulic cylinder (7) by support (10), the probe of described linear variable differential transformer (LVDT) (9) straight down, and with the upper-end contact of hydraulic cylinder (7) piston,
At the back side of described hydraulic cylinder (7), servo-valve (11) is installed, the oil-in of hydraulic cylinder (7) is all communicated with servo-valve (11) with oil-out, the oil-in of described servo-valve (11) is connected with the oil-out of variable piston formula hydraulic pump (18) by the first oil pipe (17), variable piston formula hydraulic pump (18) is installed on fuel tank (19), and the oil return outlet of servo-valve (11) is connected by the oil return opening of the second oil pipe (17 ') with variable piston formula hydraulic pump (18);
Described second oil pipe (17 ') is connected to arm (26), this arm (26) is connected with the oil nozzle (24) of energy accumulator housing (20) bottom, pouch (22) is provided with in energy accumulator housing (20), inert gas (21) is filled with in this pouch (22), at the top of pouch (22), spool (23) is installed, spool (23) protrudes upward energy accumulator housing (20) outward, in the space that described pouch (22) and energy accumulator housing (20) are formed, be filled with hydraulic oil (25).
The present invention adopts epoxy resin as bonding agent, push-down head test specimen being directly bonded in be connected with dynamometer (there is threaded hole in the middle of this push-down head, combined by twisting with the screw rod on dynamometer holder, counter-clockwise rotation can unload push-down head, clockwise shearing can fix push-down head), then to be bonded dose solidify after, again test specimen upper end is pasted onto on loading head that piston lower portion is connected and (in the middle of this loading head, has threaded hole, combined by twisting with the screw rod on piston, counter-clockwise rotation can unload loading head, clockwise shearing can fix loading head), until test specimen bonding firmly after, variable piston formula hydraulic pump works, by the first oil pipe, hydraulic oil is input to servo-valve, by servo-valve to hydraulic cylinder fuel feeding, the piston upwards of hydraulic control cylinder, test specimen is stretched, while hydraulic cylinder piston moves upward, the probe promoting linear variable differential transformer (LVDT) is subjected to displacement, linear variable differential transformer (LVDT) and dynamometer coordinate, under the effect of corresponding control circuit, the axial deformation of test specimen and suffered pulling force can be measured.After having tested, hydraulic cylinder is to servo-valve oil return, and the piston of hydraulic cylinder moves downward, and the hydraulic oil getting back to servo-valve flows to variable piston formula hydraulic pump by the second oil pipe.
Except carrying out tension test, the piston piston of hydraulic control cylinder of the present invention moves downward, and can also carry out compression test.
One aspect of the present invention structure is simple, compact, and easily, cost is low in assembling; On the other hand, adopt epoxy resin as bonding agent, and dynamometer, test specimen, hydraulic cylinder and linear variable differential transformer (LVDT) are on same vertical curve, thus the stress under effectively prevent stretching condition is concentrated, make test specimen in process of the test be in the state of being stretched completely, test figure accurately, reliably.
The present invention adopts variable piston formula hydraulic pump as the power source of hydraulic oil, because in variable piston formula hydraulic pump, swash plate moves, variable piston formula prexxure of the hydraulic pump can be caused to decline, therefore, the 8Mpa pouch in energy accumulator housing is adopted to be continuously the pressure that variable piston formula hydraulic pump piston provides 10Mpa.In accumulator, mainly contain 8Mpa inert gas pouch, outside pouch, have the hydraulic oil of 10Mpa in energy accumulator housing, this hydraulic oil is communicated with variable piston formula hydraulic pump by arm and the second oil pipe.If the maintain constant pressure of variable piston formula hydraulic pump, then in accumulator, hydraulic oil and inert gas pouch keep steady state (SS), if because the mobile build-up of pressure of variable piston formula hydraulic pump swash plate is poor, then continued to variable piston formula hydraulic pump supply pressure by the 10Mpa hydraulic oil in accumulator.With upper type makeup oil pressure in time, effectively prevent the temperature rising problem in oily operation process, not only ensure the reliability of hydraulic cylinder works, and do not need, separately for variable piston formula hydraulic pump is equipped with cooling system, to greatly reduce cost.
In order to simplify structure, convenient for assembly, and guarantee the stability on testing machine top, described lower location-plate (2) is connected by the counter-force post (3) that two are parallel to each other with upper location-plate (4), and the upper and lower side of this counter-force post (3) is locked with corresponding location-plate by nut.
For the ease of unit assembling of ship machinery displacement, the end face of location-plate (4) is provided with two suspension ring (16) side by side on described.
In order to make more compact structure, be convenient to line arrangement, the impurity placed in oil enters in servo-valve, and described first oil pipe (17) is in series with filtrator (12), and this filtrator (12) is installed on the side of servo-valve (11).
In order to make, linear variable differential transformer (LVDT) is installed firmly, reliably, dismounting convenience is good, and described linear variable differential transformer (LVDT) (9) is installed on support (10) by upper and lower two anchor ears.
As preferably, in the upper end of described spool (23) suit sheath (13), this sheath (13) is by nut lock.
Described energy accumulator housing (20) is arranged on locating rack (27), this locating rack (27) comprises bottom girder (28), vertical beam (29), supporting plate (30) and riser (31), wherein, two foundation beams (28) are arranged in parallel on ground, two vertical beams be parallel to each other (29) are provided with between two foundation beams (28), the lower end of each vertical beam (29) and the middle part of respective side bottom girder (28) fit fixing, riser (31) is connected between the top of two vertical beams (29), bottom and the supporting plate (30) of this riser (31) fix, described energy accumulator housing (20) is supported on supporting plate (30), the oil nozzle (24) of energy accumulator housing (20) bottom is through the via hole in the middle part of supporting plate (30), the band (32) of circular arc is provided with at the middle part of described energy accumulator housing (20), this band (32) and energy accumulator housing (20) fit, the two ends of band (32) are all welded with stud (33), this stud (33) is through riser (31), and by nut lock.Above structure on the one hand locating rack moulding is simple, and processing and fabricating is easy, and good stability, can not shake; On the other hand, the bottom of energy accumulator housing is held by supporting plate, and band with the form of semi-surrounding by the middle part banding of energy accumulator housing on riser, accumulator dismounting is convenient, has connected not only firmly but also reliable.
For the ease of selection, reduce production cost further, described bottom girder (28) and vertical beam (29) are angle bar.
Stiffening plate (34) is symmetrically arranged with at the two ends of described supporting plate (30), this stiffening plate (34) is right-angle triangle, a right-angle side and the supporting plate (30) of stiffening plate (34) are welded and fixed, and another right-angle side and the riser (31) of stiffening plate (34) are welded and fixed.Stiffening plate plays a part to increase structural strength, and it is firm to make to be connected between riser with supporting plate, can not occur to loosen or come off.
The invention has the beneficial effects as follows:
1, structure is simple, compact, takes up room little, and easy to assembly, cost is low, good stability;
2, test specimen processing is equally simple with the processing of conventional rock sample, takes out core and then polishes Double End, flatness is reached 0.01mm and can obtain very accurate tension test data;
3, avoid fixture stress concentration effect, in process of the test, test specimen is in the state of being stretched completely, is consistent with experiment purpose, and the experimental data obtained is very directly perceived, true, reliable;
4, test is interfered less, and discreteness is smaller, so often the number of group test setting is less, greatly can reduce workload;
5, can continue, to hydraulic pump supply pressure, to effectively prevent the problem of temperature rise in oily operation process by accumulator, stationarity and the reliability of system cloud gray model are secure.
6, not only may be used for tension test, can also compression test be used for, have wide range of applications.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the side view on top of the present invention.
Fig. 3 is oil circuit connection diagram of the present invention.
Fig. 4 is the side view of locating rack.
Fig. 5 is the front view of locating rack.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
As shown in Figure 1, fixed mount 1 is framed structure, and foot bolt 14 is all equipped with at four angles place bottom this fixed mount 1.Arrange lower location-plate 2 at the top of fixed mount 1, this lower location-plate 2 is preferably rectangle, and is positioned on surface level.Location-plate 4 is provided with directly over lower location-plate 2, upper location-plate 4 is also preferably rectangle, upper location-plate 4 parallels with lower location-plate 2, the counter-force post 3 that upper location-plate 4 is parallel to each other by two, left and right with lower location-plate 2 is connected, counter-force post 3 is perpendicular to upper location-plate 4, and the upper and lower side of this counter-force post 3 is locked with corresponding location-plate by nut.At the end face of upper location-plate 4, two suspension ring 16 being installed side by side, being connected with the hook of lifting appliance during for lifting.
As shown in Figure 1 and Figure 2, install dynamometer 5 in the central authorities of lower location-plate 2 end face, this dynamometer 5 between two counter-force posts 3, and installs push-down head 6 at the top of dynamometer 5.Directly over push-down head 6, arrange hydraulic cylinder 7, this hydraulic cylinder 7 is installed on location-plate 4.The axial line of hydraulic cylinder 7 is perpendicular to upper location-plate 4, and the lower end of hydraulic cylinder 7 piston is fixedly installed loading head 8, and this loading head 8 is positioned at the below of location-plate 4, and loading head 8 is downwards just to push-down head 6.Install servo-valve 11 at the back side of hydraulic cylinder 7, the oil-in of hydraulic cylinder 7 is communicated with the oil-out of servo-valve 11, the oil-out of hydraulic cylinder 7 and the oil return inlet communication of servo-valve 11, the turnover oil of servo-valve 11 hydraulic control cylinder 7.Be provided with filtrator 12 on the side of servo-valve 11, the outlet of filtrator 12 is communicated with the oil-in of servo-valve 11.
As shown in Figure 1 and Figure 2, linear variable differential transformer (LVDT) 9 is provided with directly over hydraulic cylinder 7, the axial line of this linear variable differential transformer (LVDT) 9 is vertical with upper location-plate 4, and linear variable differential transformer (LVDT) 9 is installed on support 10 by upper and lower two anchor ears, and support 10 is fixed on the cylinder body of hydraulic cylinder 7.The probe of linear variable differential transformer (LVDT) 9 straight down, and the upper-end contact of the probe of linear variable differential transformer (LVDT) 9 and hydraulic cylinder 7 piston.
As shown in Figure 1, Figure 3, the import of filtrator 12 is connected with the oil-out of variable piston formula hydraulic pump 18 by the first oil pipe 17, and variable piston formula hydraulic pump 18 is installed on fuel tank 19, and this variable piston formula hydraulic pump 18 is driven by motor.The oil return outlet of servo-valve 11 is connected by the oil return opening of the second oil pipe 17 ' with variable piston formula hydraulic pump 18.Between servo-valve 11 and the connecting line of variable piston formula hydraulic pump 18, be provided with accumulator, this accumulator is made up of parts such as energy accumulator housing 20, pouch 22, spool 23, oil nozzle 24 and sheaths 13.Wherein, pouch 22 is arranged in energy accumulator housing 20, and be filled with inert gas 21 in this pouch 22, inert gas 21 is preferably nitrogen, and the pressure of inert gas 21 is preferably 8Mpa.Install spool 23 at the top of pouch 22, spool 23 protrudes upward outside energy accumulator housing 20, and pouch 22 can carry out inflating or being vented by spool 23.The upper end of spool 23 suit sheath 13, this sheath 13 by nut lock, sheath 13 pairs of spools 23 protective actions.In the space that described pouch 22 and energy accumulator housing 20 are formed, be filled with hydraulic oil 25, the pressure of hydraulic oil 25 is preferably 10Mpa.In the bottom of energy accumulator housing 20, oil nozzle 24 is set, one of oil nozzle 24 and arm 26 is connected, the other end of arm 26 is connected on the second oil pipe 17 ', and the hydraulic oil 25 in energy accumulator housing 20 is communicated with variable piston formula hydraulic pump 18 by arm 26 and the second oil pipe 17 '.
As shown in Figure 4, Figure 5, energy accumulator housing 20 is arranged on locating rack 27, and this locating rack 27 is made up of bottom girder 28, vertical beam 29, supporting plate 30, riser 31 and stiffening plate 34 etc.Wherein, bottom girder 28 is preferably angle bar, and two foundation beams 28 are parallel to each other, and are symmetrically arranged on ground.Between two foundation beams 28, be provided with two vertical beams be parallel to each other 29, vertical beam 29 is also preferably angle bar, and vertical beam 29 is perpendicular to bottom girder 28, and the lower end of each vertical beam 29 and the middle part of respective side bottom girder 28 fit, and by being welded and fixed.Between the top of two vertical beams 29, connect riser 31, riser 31 welds with vertical beam 29, and the bottom of this riser 31 is welded and fixed mutually with supporting plate 30, and riser 31 and supporting plate 30 form " L " shape structure.Be symmetrically arranged with stiffening plate 34 at the two ends of supporting plate 30, this stiffening plate 34 is right-angle triangle, and a right-angle side of stiffening plate 34 and supporting plate 30 are welded and fixed, and another right-angle side and the riser 31 of stiffening plate 34 are welded and fixed.
As shown in Figure 4, Figure 5, the bottom support of energy accumulator housing 20 is on supporting plate 30, and the oil nozzle 24 bottom energy accumulator housing 20 is passed down through the via hole in the middle part of supporting plate 30.Be provided with the band 32 of circular arc at the middle part of energy accumulator housing 20, this band 32 fits with the form of semi-surrounding and energy accumulator housing 20, and the two ends of band 32 are all welded with stud 33, and this stud 33 passes riser 31, and by nut lock.
Principle of work of the present invention is as follows:
Adopt epoxy resin as bonding agent, test specimen 15 is made to be bonded between push-down head 6 and loading head 8, until test specimen 15 bonding firmly after, variable piston formula hydraulic pump 18 works, by the first oil pipe 17, hydraulic oil is input to servo-valve 11, by servo-valve 11 to hydraulic cylinder 7 fuel feeding, the piston upwards of hydraulic control cylinder 7, test specimen 15 is stretched, while hydraulic cylinder 7 piston upwards, the probe promoting linear variable differential transformer (LVDT) 9 is subjected to displacement, linear variable differential transformer (LVDT) 9 and dynamometer 6 coordinate, under the effect of corresponding control circuit, the axial deformation of test specimen 15 and suffered pulling force can be measured.After having tested, hydraulic cylinder 7 is to servo-valve 11 oil return, and the piston of hydraulic cylinder 7 moves downward, and the hydraulic oil getting back to servo-valve 11 flows to variable piston formula hydraulic pump 18 by the second oil pipe 17 '.
Because the hydraulic oil in energy accumulator housing 20 is communicated with variable piston formula hydraulic pump 18 by arm 26 and the second oil pipe 17 ', if the maintain constant pressure of variable piston formula hydraulic pump 18, then in accumulator, hydraulic oil and inert gas pouch keep steady state (SS), if because the mobile build-up of pressure of variable piston formula hydraulic pump 18 swash plate is poor, then continue to variable piston formula hydraulic pump 18 supply pressure by the 10Mpa hydraulic oil in accumulator, avoid occurrence temperature in oily operation process to rise.
The piston piston of hydraulic control cylinder of the present invention moves downward, and can also carry out compression test.
Claims (9)
1. a single shaft tensile compression test system, there is fixed mount (1), it is characterized in that: at the top of described fixed mount (1), lower location-plate (2) is set, the top of this lower location-plate (2) is supported with location-plate (4) by counter-force post (3), in the central authorities of described lower location-plate (2) end face, dynamometer (5) is installed, push-down head (6) dynamometer (5) is equipped with, hydraulic cylinder (7) is set directly over described push-down head (6), this hydraulic cylinder (7) is installed on location-plate (4), the lower end of hydraulic cylinder (7) piston is provided with loading head (8), this loading head (8) is positioned at the below of location-plate (4) also just to described push-down head (6), linear variable differential transformer (LVDT) (9) is provided with directly over described hydraulic cylinder (7), this linear variable differential transformer (LVDT) (9) is arranged on the cylinder body of hydraulic cylinder (7) by support (10), the probe of described linear variable differential transformer (LVDT) (9) straight down, and with the upper-end contact of hydraulic cylinder (7) piston,
At the back side of described hydraulic cylinder (7), servo-valve (11) is installed, the oil-in of hydraulic cylinder (7) is all communicated with servo-valve (11) with oil-out, the oil-in of described servo-valve (11) is connected with the oil-out of variable piston formula hydraulic pump (18) by the first oil pipe (17), variable piston formula hydraulic pump (18) is installed on fuel tank (19), and the oil return outlet of servo-valve (11) is connected by the oil return opening of the second oil pipe (17 ') with variable piston formula hydraulic pump (18);
Described second oil pipe (17 ') is connected to arm (26), this arm (26) is connected with the oil nozzle (24) of energy accumulator housing (20) bottom, pouch (22) is provided with in energy accumulator housing (20), inert gas (21) is filled with in this pouch (22), at the top of pouch (22), spool (23) is installed, spool (23) protrudes upward energy accumulator housing (20) outward, in the space that described pouch (22) and energy accumulator housing (20) are formed, be filled with hydraulic oil (25).
2. single shaft tensile compression test system according to claim 1, it is characterized in that: described lower location-plate (2) is connected by the counter-force post (3) that two are parallel to each other with upper location-plate (4), and the upper and lower side of this counter-force post (3) is locked with corresponding location-plate by nut.
3. single shaft tensile compression test system according to claim 1 and 2, is characterized in that: the end face of location-plate (4) is provided with two suspension ring (16) side by side on described.
4. single shaft tensile compression test system according to claim 1, is characterized in that: on described first oil pipe (17), be in series with filtrator (12), this filtrator (12) is installed on the side of servo-valve (11).
5. single shaft tensile compression test system according to claim 1, is characterized in that: described linear variable differential transformer (LVDT) (9) is installed on support (10) by upper and lower two anchor ears.
6. single shaft tensile compression test system according to claim 1, is characterized in that: in the upper end of described spool (23) suit sheath (13), this sheath (13) is by nut lock.
7. single shaft tensile compression test system according to claim 1, it is characterized in that: described energy accumulator housing (20) is arranged on locating rack (27), this locating rack (27) comprises bottom girder (28), vertical beam (29), supporting plate (30) and riser (31), wherein, two foundation beams (28) are arranged in parallel on ground, two vertical beams be parallel to each other (29) are provided with between two foundation beams (28), the lower end of each vertical beam (29) and the middle part of respective side bottom girder (28) fit fixing, riser (31) is connected between the top of two vertical beams (29), bottom and the supporting plate (30) of this riser (31) fix, described energy accumulator housing (20) is supported on supporting plate (30), the oil nozzle (24) of energy accumulator housing (20) bottom is through the via hole in the middle part of supporting plate (30), the band (32) of circular arc is provided with at the middle part of described energy accumulator housing (20), this band (32) and energy accumulator housing (20) fit, the two ends of band (32) are all welded with stud (33), this stud (33) is through riser (31), and by nut lock.
8. single shaft tensile compression test system according to claim 1, is characterized in that: described bottom girder (28) and vertical beam (29) are angle bar.
9. the single shaft tensile compression test system according to claim 7 or 8, it is characterized in that: be symmetrically arranged with stiffening plate (34) at the two ends of described supporting plate (30), this stiffening plate (34) is right-angle triangle, a right-angle side and the supporting plate (30) of stiffening plate (34) are welded and fixed, and another right-angle side and the riser (31) of stiffening plate (34) are welded and fixed.
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| CN105588699A (en) * | 2016-03-18 | 2016-05-18 | 辽宁工程技术大学 | Hydraulic impact testing machine |
| CN105910909A (en) * | 2016-03-29 | 2016-08-31 | 中国地震局地壳应力研究所 | Multi-diameter rock core dual-ring direct tension rock tensile strength tester |
| CN110057678A (en) * | 2019-05-13 | 2019-07-26 | 交通运输部公路科学研究所 | A kind of stabilized with inorganic binder material direct tensile test device |
| CN112345355A (en) * | 2020-11-02 | 2021-02-09 | 西南石油大学 | Cement stone tensile strength testing device and method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2231246Y (en) * | 1995-10-19 | 1996-07-17 | 何全富 | Automatic kichback return mechanism for hydraulic jack |
| CN2888147Y (en) * | 2006-01-19 | 2007-04-11 | 上海交大神舟汽车设计开发有限公司 | Bladder type oil tank |
| CN101634621A (en) * | 2009-08-12 | 2010-01-27 | 重庆大学 | Fluid-solid-heat coupling triaxial servo percolation device for gas-contained coal |
| CN202545385U (en) * | 2012-05-04 | 2012-11-21 | 山东理工大学 | Energy-saving hydraulic system for loaders |
| CN103148031A (en) * | 2013-03-27 | 2013-06-12 | 南京工业大学 | Energy-saving control system of hydraulic movable arm loop |
| JP2013127180A (en) * | 2011-12-19 | 2013-06-27 | Nishimatsu Constr Co Ltd | Bedrock property predicting method and system |
| CN103307057A (en) * | 2013-06-25 | 2013-09-18 | 北京航空航天大学 | Pollution and abrasion test system for electro-hydraulic servo valve |
| CN103350749A (en) * | 2013-07-11 | 2013-10-16 | 中国船舶重工集团公司第七○二研究所 | Energy-saving type residual buoyancy driving device utilizing spring to store energy |
| CN103758910A (en) * | 2014-01-19 | 2014-04-30 | 吉林大学 | Pump-type floating piston damper |
| CN104132881A (en) * | 2014-07-24 | 2014-11-05 | 重庆大学 | Multi-phase fluid fracturing-seepage gas-liquid separation type experimental system of reservoir permeable medium |
-
2015
- 2015-01-16 CN CN201510022897.2A patent/CN104596856B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2231246Y (en) * | 1995-10-19 | 1996-07-17 | 何全富 | Automatic kichback return mechanism for hydraulic jack |
| CN2888147Y (en) * | 2006-01-19 | 2007-04-11 | 上海交大神舟汽车设计开发有限公司 | Bladder type oil tank |
| CN101634621A (en) * | 2009-08-12 | 2010-01-27 | 重庆大学 | Fluid-solid-heat coupling triaxial servo percolation device for gas-contained coal |
| JP2013127180A (en) * | 2011-12-19 | 2013-06-27 | Nishimatsu Constr Co Ltd | Bedrock property predicting method and system |
| CN202545385U (en) * | 2012-05-04 | 2012-11-21 | 山东理工大学 | Energy-saving hydraulic system for loaders |
| CN103148031A (en) * | 2013-03-27 | 2013-06-12 | 南京工业大学 | Energy-saving control system of hydraulic movable arm loop |
| CN103307057A (en) * | 2013-06-25 | 2013-09-18 | 北京航空航天大学 | Pollution and abrasion test system for electro-hydraulic servo valve |
| CN103350749A (en) * | 2013-07-11 | 2013-10-16 | 中国船舶重工集团公司第七○二研究所 | Energy-saving type residual buoyancy driving device utilizing spring to store energy |
| CN103758910A (en) * | 2014-01-19 | 2014-04-30 | 吉林大学 | Pump-type floating piston damper |
| CN104132881A (en) * | 2014-07-24 | 2014-11-05 | 重庆大学 | Multi-phase fluid fracturing-seepage gas-liquid separation type experimental system of reservoir permeable medium |
Non-Patent Citations (1)
| Title |
|---|
| 全振兴: "囊式蓄能器在液压系统中应用", 《山东煤炭科技》 * |
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| CN105588699B (en) * | 2016-03-18 | 2017-12-26 | 辽宁工程技术大学 | A kind of hydraulic shock testing machine |
| CN105910909A (en) * | 2016-03-29 | 2016-08-31 | 中国地震局地壳应力研究所 | Multi-diameter rock core dual-ring direct tension rock tensile strength tester |
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| CN110057678A (en) * | 2019-05-13 | 2019-07-26 | 交通运输部公路科学研究所 | A kind of stabilized with inorganic binder material direct tensile test device |
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