CN102494942A - Double-motor synchronous driving rotatable geotechnical testing machine - Google Patents
Double-motor synchronous driving rotatable geotechnical testing machine Download PDFInfo
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- CN102494942A CN102494942A CN2011103910819A CN201110391081A CN102494942A CN 102494942 A CN102494942 A CN 102494942A CN 2011103910819 A CN2011103910819 A CN 2011103910819A CN 201110391081 A CN201110391081 A CN 201110391081A CN 102494942 A CN102494942 A CN 102494942A
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Abstract
The invention discloses a double-motor synchronous driving rotatable geotechnical testing machine, which comprises a base. Four vertical columns are fixed on the base, a lower carrier plate and an upper carrier plate are sleeved on the vertical columns, the lower carrier plate can slide on the vertical columns, and a test sample barrel is arranged between the upper carrier plate and the lower carrier plate. The inside of the base is a cavity, and a hydraulic cylinder is fixed in the cavity of the base and right faces the position below the test sample barrel. An upper rotary bearing is arranged at the upper end of the test sample barrel, an external gear of the upper rotary bearing is meshed with external teeth of an upper gear shaft, a lower rotary bearing is arranged at the lower end of the test sample barrel, and an external gear of the lower rotary bearing is meshed with external teeth of a lower gear shaft. The upper gear shaft and the lower gear shaft are respectively driven by an upper motor and a lower motor which carry out synchronous driving. Two motors synchronously drive a geotechnical test sample to rotate, and the hydraulic cylinder carries out axial loading on the geotechnical test sample simultaneously, thereby achieving rotation and axial loading of the geotechnical test sample.
Description
Technical field
The present invention relates to a kind of ground testing machine equipment, belong to the experimental provision technical field, particularly a kind of ground testing machine that utilizes the CT scan technology that the mechanical property and the deformation process of ground are tested.
Background technology
The ground testing machine is the stress of research ground, a kind of basic science test apparatus of strain stress relation; Form by axial compression system, confined pressure system and temperature control system; Principle of work is through the axial compression system sample to be applied axial sample power; Through the pressure chamber sample is applied confined pressure, through temperature control system the upper and lower end face of sample, sample middle part are under the different temperature environment respectively simultaneously, thus the multiple actual condition of simulation sample under different temperatures.But traditional ground testing machine is difficult to observe the inner structure of material thereby more can't records the true geometric distribution situation of the inner heterogeneity material of rock mass.Constantly improving and development of Along with computer technology, the CT recognition technology is applied to the ground test.For the distortion situation to each longitudinal cross-section of ground sample in process of the test dynamic observes, will solve the problem that relatively rotates of ground sample and CT scanner.
Lanzhou Inst. of Glaciology and Cryopedology, Chinese Academy of Sciences once adopted the CT measuring technology to carry out the ground triaxial test.What they adopted is the strain-type triaxial cell directly to be put in the CT machine scan, and this CT scan method only is fit to and pressure chamber's axle pressure and the lower occasion of ambient pressure, and is inapplicable to large-scale ground testing machine.
Patent of invention CN 200620096213.X discloses a kind of comprehensive scanning ground CT triaxial apparatus, and it is a kind of triaxial apparatus of complete nonmetal making, not only can carry out the scanning of horizontal section, and can carry out the vertically scanning of (axially) section.But also only be applicable to the occasion that axial compression and confined pressure are less, inapplicable to large-scale ground testing machine.Axial compression, the confined pressure of large-scale ground testing machine are bigger, must use metal to make test specimen tube, must use high energy CT machine accordingly like this.Because large-scale ground testing machine volume is bigger, can not directly put into high energy CT machine and scan, so must be rotatable part with the test specimen tube partial design of testing machine.
Utility model CN201887110U discloses a kind of bi-motor synchronized drive technology, is used for the pole piece twin rollers of battery, after the tach signal detection with main drive motor, feeds back to join and controls motor control assembly, realizes two motor synchronous.
Defective to prior art exists proposes the present invention.
Summary of the invention
The technical matters that the present invention is intended to solve is the axial loading and the rotation problem of ground sample.In view of the problem that exists in the prior art; The object of the present invention is to provide a kind of rotatable ground testing machine of bi-motor driven in synchronism that solves ground sample rotation loading problem, thereby be convenient to utilize the distortion situation of the CT comprehensive scanning ground sample of technology under loading environment.
For realizing the foregoing invention purpose, technical scheme provided by the invention is: the rotatable ground testing machine of a kind of bi-motor driven in synchronism comprises base; Be fixed with four root posts on the base, column is with lower roof plate, upper plate, and wherein lower roof plate can slide on column; Place test specimen tube between upper plate and the lower roof plate; Described base inside is cavity, and hydraulic cylinder is fixed in the cavity of base, and over against the test specimen tube below; Described test specimen tube upper end is provided with pivoting support, and last pivoting support is connected with the output shaft of last motor; Described test specimen tube lower end is provided with the turning down supporting, and the turning down supporting is connected with the output shaft of following motor; The aforesaid motor of going up is a driven in synchronism with following motor.
The described motor output shaft of going up connects the axle that cogs, and the external tooth that last pivoting support outside is provided with gear and the axle that cogs meshes; Described motor output shaft down connects gear shaft, the outside external tooth engagement that is provided with gear and lower tooth wheel shaft of turning down supporting.
Described upward motor is fixed on the lower surface of upper plate through upper bracket; The first ball bearing outer ring cooperates with upper plate lower surface bearing mounting hole; The first ball bearing inner ring cooperates with the axle upper end that cogs; The second ball bearing outer ring cooperates with the bearing mounting hole of upper bracket inside surface, and the second ball bearing inner ring cooperates with a lower end that cogs; Described motor down is fixed on the upper surface of lower roof plate through lower carriage; The 4th ball bearing outer ring cooperates with lower roof plate upper surface bearing mounting hole; The 4th ball bearing inner ring cooperates with lower tooth wheel shaft lower end; The 3rd ball bearing outer ring cooperates with the bearing mounting hole of lower carriage inside surface, and the 3rd ball bearing inner ring cooperates with lower tooth wheel shaft upper end.
Four angles of described upper bracket bottom surface have a bolt mounting holes, and a side is an opening surface, and upper bracket is fixed in upper plate lower surface one side through bolt, and opening surface points to inboard last pivoting support; Four angles of described lower carriage bottom surface have a bolt mounting holes, and a side is an opening surface, and lower carriage is fixed in lower roof plate upper surface one side through bolt, and opening surface points to inboard turning down supporting.
The upper end of described test specimen tube is provided with a upper plate, on turn round supporting outer ring through being bolted to a upper plate, last swing bearing inner ring is through being bolted to the lower surface of upper plate; The lower end of described test specimen tube is provided with a lower bottom base, and the turning down supporting outer ring is through being bolted on the lower bottom base, and turning down supporting inner ring is through being bolted to the upper surface of lower roof plate.
There is cylindrical projection at the lower surface center of described upper plate, the inner ring of last pivoting support and the protruding axial location that realizes going up pivoting support that cooperates; There is cylindrical projection at the upper surface center of described lower roof plate, the inner ring of turning down supporting and the protruding axial location that realizes the turning down supporting that cooperates.
Described tube lower bottom base upper surface has square locating slot, matches with the square flange of test specimen tube lower end.
An interior upper plug is installed in the top through hole of described test specimen tube, has the annular seal groove that the cross section is a rectangle on the through hole circumferential inner surface of test specimen tube top, O-ring seal is housed in the annular seal groove; In the cylinder of described test specimen tube bottom an interior lower plunger is installed, has the annular seal groove that the cross section is a rectangle on the circumferential outer surface of lower plunger in the tube, O-ring seal is housed in the annular seal groove.
The upper surface center of lower plunger has conical socket in the described tube, and the lower surface of lower gasket is provided with tapered protrusion, and the tapered protrusion of lower gasket cooperates with the conical socket of lower plunger in the tube; The lower surface center of upper plug has conical socket in the described tube, and the upper surface of Upper gasket is provided with tapered protrusion, and the tapered protrusion of Upper gasket cooperates with the conical socket of upper plug in the tube.
The invention has the beneficial effects as follows: the present invention is through the driven in synchronism ground sample rotation of two motors; Hydraulic cylinder axially loads the ground sample simultaneously; Thereby realized the rotation of ground sample and axially loading, be convenient to adopt the industry CT technology to carry out comprehensive scanning ground sample internal modification motion conditions under loading environment.
Description of drawings
When combining accompanying drawing to consider; Through with reference to following detailed, can more completely understand the present invention better and learn wherein many attendant advantages easily, but accompanying drawing described herein is used to provide further understanding of the present invention; Constitute a part of the present invention; Illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute to improper qualification of the present invention, wherein:
Fig. 1 is the rotatable ground testing machine of a bi-motor driven in synchronism of the present invention front section view;
Reference numeral: upper plate 1, the first ball bearing 2, the axle 3 that cogs, upper bracket 4, the second ball bearing 5, last motor 6, following motor 7; The 3rd ball bearing 8, lower carriage 9, lower tooth wheel shaft 10, the four ball bearing 11, lower roof plate 12, base 13; Hydraulic cylinder 14, column 15, turning down supporting 16, tube lower bottom base 17, lower plunger 18 in the tube, test specimen tube 19; Lower gasket 20, ground sample 21, Upper gasket 22, upper plug 23 in the tube, tube upper plate 24, last pivoting support 25.
Embodiment
Below in conjunction with Fig. 1 embodiments of the invention are described; The rotatable ground testing machine of bi-motor driven in synchronism of the present invention; Comprise that base 13 inside are cavity, hydraulic cylinder 14 is fixed in the cavity, and respectively there is an obstructed circular hole at four angles of base 13 upper surfaces; Four root posts 15 insert in four obstructed circular holes of base 13, and affixed with base 13; Lower roof plate 12 is actively socketed on four root posts 15, and can slide up and down along column 15; Upper plate 1 is fixedly sleeved on four root posts 15, cannot relatively move; Four angles of lower carriage 9 bottom surfaces have a bolt mounting holes, and a side is an opening surface, and lower carriage 9 is fixed in lower roof plate 12 upper surfaces one side through bolt, and opening surface points to inboard turning down supporting 16, and following motor 7 is fixed in the upper surface of lower carriage 9; The 4th ball bearing 11 outer rings cooperate with lower roof plate 12 upper surface bearing mounting holes; The 4th ball bearing 11 inner rings cooperate with lower tooth wheel shaft 10 lower ends; The 3rd ball bearing 8 outer rings cooperate with the bearing mounting hole of lower carriage 9 inside surfaces; The 3rd ball bearing 8 inner rings cooperate with lower tooth wheel shaft 10 upper ends, and assurance lower tooth wheel shaft 10 supports 16 good engagement with turning down; Turning down is supported 16 inner rings and is fixed in the upper surface of lower roof plate 12 through bolt, and it is affixed with tube lower bottom base 17 through bolt that 16 outer rings are supported in turning down; Tube lower bottom base 17 upper surfaces have square locating slot, match with the square flange of test specimen tube 19 lower ends.
The top through hole of test specimen tube 19 matches with the cylindrical outer surface of the interior upper plug 23 of tube; Have the annular seal groove that the cross section is a rectangle on the test specimen tube 19 top through hole circumferential inner surfaces; O-ring seal is housed in the annular seal groove; Test specimen tube 19 bottom cylinder inner surfaces match with the cylindrical outer surface of the interior lower plunger 18 of tube, have the annular seal groove that the cross section is a rectangle on the circumferential outer surface of lower plunger 18 in the tube, and O-ring seal is housed in the annular seal groove.
Ground sample 21 is finish-machined to cylindric, and two ends cooperate with Upper gasket 22, lower gasket 20 respectively up and down, and lower gasket 20 places on the interior lower plunger 18; The upper surface center of lower plunger 18 has conical socket in the tube, cooperates with the tapered protrusion at lower gasket 20 centers, realizes axial location; Upper plug 23 in the Upper gasket 22 top top cylinders; The lower surface center of upper plug 23 has conical socket in the tube, cooperates with the tapered protrusion at Upper gasket 22 centers, realizes axial location.
Last pivoting support 25 inner rings are fixed on upper plate 1 lower surface through bolt, and last pivoting support 25 outer rings are affixed with tube upper plate 24 through bolt; Upper bracket 4 is identical with lower carriage 9 structures; Four angles of bottom surface have a bolt mounting holes, and a side is an opening surface, and upper bracket 4 is fixed in upper plate 1 lower surface one side through bolt; Opening surface points to inboard last pivoting support 25, and last motor 6 is fixed in the lower surface of upper bracket 4; First ball bearing, 2 outer rings cooperate with upper plate 1 lower surface bearing mounting hole; First ball bearing, 2 inner rings cooperate with axle 3 upper ends that cog; Second ball bearing, 5 outer rings cooperate with the bearing mounting hole of upper bracket 4 inside surfaces; Second ball bearing, 5 inner rings cooperate with axle 3 lower ends that cog, and guarantee cog axle 3 and last pivoting support 25 good engagement.
The synchro control of last motor 6 and following motor 7 adopts the disclosed bi-motor synchronized drive technology of utility model CN201887110U to realize.
The concrete principle of work of present embodiment, narrate as follows:
Motor 6, motor 7 motions down on the control system driven in synchronism; Drive cog axle 3, lower tooth wheel shaft 10 rotation; Thereby the outer ring rotation of pivoting support 25, turning down supporting 16 on the driven in synchronism; And then drive a tube upper plate 24, a tube lower bottom base 17 rotate synchronously, tube lower bottom base 17 drives test specimen tubes 19 and rotates simultaneously; When hydraulic cylinder 14 starts; Thrust upwards is on lower roof plate 12 and make it upwards to slide along four columns 15; Thrust is through upper plug 23 in lower plunger 18 and lower gasket 20, Upper gasket 22, the tube in lower roof plate 12, turning down supporting 16, tube lower bottom base 17, the tube; Tube upper plate 24, last pivoting support 25 acts on the ground sample 21.Thereby realize axial loading and load maintainer rotation, so that realize online detection to ground sample 21 in the test specimen tube 19 to ground sample 21.
As stated, embodiments of the invention have been carried out explanation at length, but as long as not breaking away from inventive point of the present invention and effect in fact can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, such variation also all is included within protection scope of the present invention.
Claims (9)
1. the rotatable ground testing machine of bi-motor driven in synchronism comprises base (13), is fixed with four root posts (15) on the base (13); Column (15) is with lower roof plate (12), upper plate (1), and wherein lower roof plate (12) can be gone up at column (15) and slide, and places test specimen tube (19) between upper plate (1) and the lower roof plate (12); It is characterized in that; Described base (13) inside is cavity, and hydraulic cylinder (14) is fixed in the cavity of base (13), and over against test specimen tube (19) below; Described test specimen tube (19) upper end is provided with pivoting support (25), and last pivoting support (25) is connected with the output shaft of last motor (6); Described test specimen tube (19) lower end is provided with turning down supporting (16), and turning down supporting (16) is connected with the output shaft of following motor (7); The aforesaid motor (6) of going up is a driven in synchronism with following motor (7).
2. the rotatable ground testing machine of a kind of bi-motor driven in synchronism according to claim 1 is characterized in that,
Described upward motor (6) output shaft connects one and cogs spool (3), and last pivoting support (25) outside is provided with gear and the external tooth of the axle (3) that cogs meshes;
Described motor (7) output shaft down connects gear shaft (10), and turning down supporting (16) outside is provided with the external tooth engagement of gear and lower tooth wheel shaft (10).
3. the rotatable ground testing machine of a kind of bi-motor driven in synchronism according to claim 2 is characterized in that,
Described upward motor (6) is fixed on the lower surface of upper plate (1) through upper bracket (4); First ball bearing (2) outer ring cooperates with upper plate (1) lower surface bearing mounting hole; First ball bearing (2) inner ring cooperates with axle (3) upper end that cogs; Second ball bearing (5) outer ring cooperates with the bearing mounting hole of upper bracket (4) inside surface, and second ball bearing (5) inner ring cooperates with axle (3) lower end that cogs;
Described motor (7) down is fixed on the upper surface of lower roof plate (12) through lower carriage (9); The 4th ball bearing (11) outer ring cooperates with lower roof plate (12) upper surface bearing mounting hole; The 4th ball bearing (11) inner ring cooperates with lower tooth wheel shaft (10) lower end; The 3rd ball bearing (8) outer ring cooperates with the bearing mounting hole of lower carriage (9) inside surface, and the 3rd ball bearing (8) inner ring cooperates with lower tooth wheel shaft (10) upper end.
4. the rotatable ground testing machine of a kind of bi-motor driven in synchronism according to claim 3 is characterized in that,
Four angles of described upper bracket (4) bottom surface have a bolt mounting holes, and a side is an opening surface, and upper bracket (4) is fixed in upper plate (1) lower surface one side through bolt, and opening surface points to inboard last pivoting support (25);
Four angles of described lower carriage (9) bottom surface have a bolt mounting holes, and a side is an opening surface, and lower carriage (9) is fixed in lower roof plate (12) upper surface one side through bolt, and opening surface points to inboard turning down supporting (16).
5. the rotatable ground testing machine of a kind of bi-motor driven in synchronism according to claim 1 is characterized in that,
The upper end of described test specimen tube (19) is provided with a upper plate (24), and last pivoting support (25) outer ring is through being bolted to a upper plate (24), and last swing bearing (25) inner ring is through being bolted to the lower surface of upper plate (1);
The lower end of described test specimen tube (19) is provided with a lower bottom base (17), and turning down supporting (16) outer ring is through being bolted on the lower bottom base (17), and turning down supporting (16) inner ring is through being bolted to the upper surface of lower roof plate (12).
6. the rotatable ground testing machine of a kind of bi-motor driven in synchronism according to claim 5 is characterized in that,
There is cylindrical projection at the lower surface center of described upper plate (1), the inner ring of last pivoting support (25) and the protruding axial location that realizes going up pivoting support (25) that cooperates;
There is cylindrical projection at the upper surface center of described lower roof plate (12), the inner ring of turning down supporting (16) and the protruding axial location that realizes turning down supporting (16) that cooperates.
7. the rotatable ground testing machine of a kind of bi-motor driven in synchronism according to claim 5 is characterized in that, described tube lower bottom base (17) upper surface has square locating slot, matches with the square flange of test specimen tube (19) lower end.
8. the rotatable ground testing machine of a kind of bi-motor driven in synchronism according to claim 1 is characterized in that,
An interior upper plug (23) is installed in the top through hole of described test specimen tube (19), has the annular seal groove that the cross section is a rectangle on the through hole circumferential inner surface of test specimen tube (19) top, O-ring seal is housed in the annular seal groove;
In the cylinder of described test specimen tube (19) bottom an interior lower plunger (18) is installed, has the annular seal groove that the cross section is a rectangle on the circumferential outer surface of lower plunger (18) in the tube, O-ring seal is housed in the annular seal groove.
9. the rotatable ground testing machine of a kind of bi-motor driven in synchronism according to claim 8 is characterized in that,
The upper surface center of lower plunger (18) has conical socket in the described tube, is provided with the lower gasket with tapered protrusion (20) that is mated in this conical socket;
The lower surface center of upper plug (23) has conical socket in the described tube, is provided with the Upper gasket with tapered protrusion (22) that is mated in this conical socket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110391081 CN102494942B (en) | 2011-11-30 | 2011-11-30 | Double-motor synchronous driving rotatable geotechnical testing machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110391081 CN102494942B (en) | 2011-11-30 | 2011-11-30 | Double-motor synchronous driving rotatable geotechnical testing machine |
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| CN102494942A true CN102494942A (en) | 2012-06-13 |
| CN102494942B CN102494942B (en) | 2013-12-18 |
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Cited By (4)
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| CN105092378A (en) * | 2015-08-13 | 2015-11-25 | 河南科技大学 | Tensile test device |
| CN105115995A (en) * | 2015-08-25 | 2015-12-02 | 交通运输部公路科学研究所 | Industrial CT scanner synchronous loading test apparatus and industrial CT scanner |
| CN106353347A (en) * | 2015-07-21 | 2017-01-25 | 中国矿业大学(北京) | Industrial CT (Computed Tomography) scanning test system and fluid pressure loading device |
| CN106769518A (en) * | 2017-02-23 | 2017-05-31 | 湖北工业大学 | Uniaxial tests device with ultrasonic scanning function |
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| US6152659A (en) * | 1994-02-02 | 2000-11-28 | Amada Metrecs Company, Limited | Rotary driving device for press machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106353347A (en) * | 2015-07-21 | 2017-01-25 | 中国矿业大学(北京) | Industrial CT (Computed Tomography) scanning test system and fluid pressure loading device |
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| CN106769518A (en) * | 2017-02-23 | 2017-05-31 | 湖北工业大学 | Uniaxial tests device with ultrasonic scanning function |
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| CN102494942B (en) | 2013-12-18 |
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Granted publication date: 20131218 Termination date: 20171130 |