CN102661915A - Impact rolling model tester and application thereof - Google Patents
Impact rolling model tester and application thereof Download PDFInfo
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- CN102661915A CN102661915A CN2012101332876A CN201210133287A CN102661915A CN 102661915 A CN102661915 A CN 102661915A CN 2012101332876 A CN2012101332876 A CN 2012101332876A CN 201210133287 A CN201210133287 A CN 201210133287A CN 102661915 A CN102661915 A CN 102661915A
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Abstract
The invention belongs to the technical field of geotechnical model test researches and relates to an impact rolling model tester and application thereof. The tester comprises a test control chamber, a traction device, slide guides, an impact wheel, a test chamber and a main framework, wherein the traction device comprises an alternating-current motor, an inhaul cable, a guide pulley and a pulley stay bar; one end of the inhaul cable is fixedly arranged on a winding pulley of the alternating-current motor; the other end of the inhaul cable is connected with a connecting fixed block; the guide pulley is arranged on supports through the pulley stay bar; the slide guides comprise two parallel and horizontal polish rods; sleeves are respectively welded at the top ends of the polish rods; the polish rods are respectively and fixedly arranged at both sides above the test chamber through the sleeves by two supports which are vertical with the ground; and the wheel shaft of the impact wheel is connected with a rocker arm through a connecting rod. According to the impact rolling model tester, an impact rolling action process on a soil body can be simulated. The impact rolling model tester is used for researching the reinforcement mechanism and the influencing factor of the impact rolling technology.
Description
Technical field
The invention belongs to the geotechnical model test studying technological domain, relate to a kind of impact-rolling model test apparatus and uses thereof.
Background technology
The impact-rolling method is a kind of shallow layer foundation disposal route of present widespread use; Impact rolls the research of reinforcement technique; Be limited to the analysis of site test and engineering experience, also be not very clear and definite to its reinforcement mechanism, therefore more; By indoor model test, be to carry out the highly effective method of impact-rolling Study on Microcosmic Mechanism.
The difficult point of model test is the similarity analysis of model and prototype, how to set up appropriate test model.The impact-rolling reinforcement technique has unique construction technology, and the key of model test is that construction equipment is made simulation, makes it can reasonably reflect the practical function process.Present impact road roller type is various, but basically all is made up of draw-gear, buffer gear and beater wheel.Draw-gear provides power and can change travelling speed, and buffer gear is the important composition mechanism of impact road roller, and it is multiple that the shape of beater wheel mainly contains triangle, quadrilateral, pentagon etc.The impact-rolling method is applicable to the ground processing of multiple soil nature, different construction requirements and reinforces that its effect to the soil body is comparatively complicated, recognizes a process for " rubbing-roll-impact " usually.Because the complicacy of this method mechanism research and model test does not still have ripe model test scheme at present.
Summary of the invention
The objective of the invention is to provides a kind of model test apparatus that carries out the research of soil body impact-rolling and uses thereof for the defective that overcomes prior art.
Device of the present invention can be simulated the process of impact road roller impact-rolling foundation soil under the different affecting factors; Be convenient to combine the mechanism of action of the soil body in the various testing apparatus observation and analysis crushing processes, for the reinforcement mechanism of illustrating the impact-rolling method provides an effective way.
For achieving the above object, the technical scheme that the present invention adopts is following:
A kind of impact-rolling model test apparatus; Comprise test control box, draw-gear, rail plate, beater wheel, chamber and main frame; Wherein said draw-gear comprises AC motor, drag-line, guide pulley and pulley strut; One end of wherein said drag-line is fixed on the winding pulley of AC motor, the other end be connected fixed block and link to each other, described guide pulley is rack-mount through the pulley strut; Described rail plate comprises two polished rods of parallel and level; The top of polished rod is welded with sleeve; Every polished rod is separately fixed at the both sides of chamber top through sleeve by two supports perpendicular to the ground, and the wheel shaft of described beater wheel links to each other with rocking arm through connecting rod.
Described test control box comprises control panel, test CS, Test Switchboard, pulling speed controller, and wherein, test CS, Test Switchboard, pulling speed controller carry out integrated control through control panel.Described test control box is controlled the startup of process of the test draw-gear and is stopped, and can change pulling speed according to testing requirements;
Described test CS is installed in the left end of rail plate, is used to control opening circuit of experimentation.
Described Test Switchboard is used to start AC motor, triggers the test CS automatically through buffer spring, can realize that AC motor opens circuit, and the pulling speed controller can be regulated the pulling speed of AC motor.
In the rotating shaft of described AC motor winding pulley is housed, its coiling speed should be complementary with test control speed.
Described AC motor is connected the break-make of may command AC motor with the interior test CS of test control box with Test Switchboard.
Described drag-line is the thin tightwire of diameter 1.5～2mm, and the one of which end is fixed on the winding pulley of motor, and the other end is connected with the slip cross bar, the pulling motion of the striking wheel of realizing liquidating.
Described guide pulley is installed on the pulley strut, and pulley strut two ends are overlapped with sleeve, wears to be fixed on the support.
Described test CS and AC motor are connected in the test control box by lead, realize integrated automatic control.
Be coated with buffer spring on the polished rod of said rail plate respectively; Described rail plate can limit the movement locus of beater wheel, guarantees stable rectilinear motion.
Be with sliding sleeve on the described rail plate, can on rail plate, be free to slide, the sliding sleeve of two rail plates is nested with the two ends of slip cross bar.
Said rail plate smooth surface, there is sliding sleeve at the horizontal two ends of sliding, in the hope of reduce friction as far as possible; Be arranged with buffer spring on the rail plate; When buffer spring moves to high order end with sliding sleeve, can touch the test CS, control test automatically with this and open circuit.
The middle part of described slip cross bar is coated with and is fixedly connected piece and fastening through screw, is fixedly connected piece and is connected with an end of drag-line.Described fixed connection piece is cylindric, plays to connect drag-line and the effect that limits the rocking arm position, and said apparatus is all detachable.
Described beater wheel processes according to certain similar proportion according to the impact road roller of being simulated, and the wheel shaft of described beater wheel links to each other with rocking arm through connecting rod can simulate the snubber assembly of impact road roller preferably;
Described connecting rod is fixed on by screw on the wheel shaft of beater wheel, and described rocking arm is connected by transverse axis with connecting rod.Such design can retrain beater wheel swinging when advancing, but do not limit its freely impacting on direction of motion, realized the effect of impact road roller snubber assembly.
Said chamber is processed by rigid plate; Size needs customization according to test, reserves the view window of 60cm * 50cm on the panel of casing the place ahead, and view window is processed by tempered glass; The left and right sides plate of chamber is a little less than the front and back side plate, and a test platform is respectively installed in its outside.Described chamber is used for splendid attire test soil sample, for model test provides the object environment, is convenient to the observation and the data acquisition of experimentation.
Lay test control box and AC motor on the left side platform of described main frame, settle chamber on the crossbeam of right side, roller is installed in the crossbeam bottom, and the integral body of being convenient to test unit moves.
Described AC motor is installed on the trapped orbit, is convenient to adjust the position.
A kind of purposes of above-mentioned impact-rolling model test apparatus simulation impact road roller impact-rolling foundation soil comprises following steps:
(1) in chamber, load soil sample, make the soil sample surfacing, height maintains an equal level with the chamber side plate, in the process of banketing, can in soil body respective depth and scope, bury measurement equipments such as soil pressure cell, hole pressure meter underground according to content of the test and needs.For the ease of the filling soil sample; Can earlier rail plate, beater wheel and auxiliary equipment thereof be pulled down, after dress appearance finishes, rail plate, beater wheel and auxiliary equipment thereof are in place; Beater wheel is positioned on the test platform of chamber right-hand member, installs the connection situation of each parts of back inspection;
(2) energized is opened test control box, through the haulage speed of the preset draw-gear of control panel;
(3) press Test Switchboard then, draw-gear is started and the motion of traction beater wheel, trigger the test CS when arriving the chamber left end, AC motor is opened circuit, accomplish one-shot and roll;
(4) beater wheel is mentioned make it to break away from the soil body, and move to the preceding initial position of step (2);
(5) repeating step (4).
Haulage speed is 0.6～1.5m/s in the described step (2), and haulage speed is as the criterion with the similar calculating income value of model test.
The multiplicity of described step (4) is 10～40 times
Owing to adopt technique scheme, the present invention is with impact road roller and the impact-rolling method is simplified and integration becomes a test model, can carry out impact-rolling method Eccentric Loads in Layered Soils and Research easily.The present invention can be used for the impact-rolling indoor model test, for studying the impact-rolling reinforcement mechanism and the soil body microcosmic mechanism of action possibility can be provided.Beneficial effect of the present invention is:
1, apparatus of the present invention are that the research of impact-rolling method provides the model investigation approach, have given full play to the advantage of indoor model test.
2, apparatus of the present invention have been simulated the impact road roller system preferably, provide reliable test to guarantee for the reinforcement mechanism of studying the impact-rolling method.
3, operation is simple for apparatus of the present invention, can study the impact-rolling effect under the different affecting factors effect through changing different test parameterss.
Description of drawings
Fig. 1 is an embodiment of the invention impact-rolling model test apparatus front view.
Fig. 2 is an embodiment of the invention impact-rolling model test apparatus vertical view.
Fig. 3 is that test control box connects synoptic diagram in the embodiment of the invention impact-rolling model test apparatus.
Fig. 4 is an embodiment of the invention impact-rolling model test apparatus draw-gear assembling synoptic diagram.
Fig. 5 is a test CS synoptic diagram in the embodiment of the invention impact-rolling model test apparatus.
Fig. 6 is the structural representation of rocking arm and pull bar in the embodiment of the invention impact-rolling model test apparatus.
Fig. 7 be in the embodiment of the invention impact-rolling model test apparatus rocking arm and pull bar be connected synoptic diagram.
The figure numbers mark
1 test control box, 2 draw-gears,
3 rail plates, 4 beater wheels,
5 chambers, 6 main frames,
7 control panels, 8 leads,
9 test CSs, 10 Test Switchboards,
11 pulling speed controllers, 12 drag-lines,
13 guide pulley, 14 pulley struts,
15 buffer springs, 16 slip cross bars,
17 are fixedly connected piece, 18 supports,
19 rocking arms, 20 connecting rods,
21 transverse axis, 22 view windows,
23 test platforms, 24 rollers,
25 trapped orbits, 26 AC motors,
27 winding pulleies, 28 sleeves,
29 sliding sleeves, 30 wheel shafts.
Embodiment
Below in conjunction with the accompanying drawing illustrated embodiment the present invention is further described.
Shown in Fig. 1～5, a kind of impact-rolling model test apparatus comprises test control box 1, draw-gear 2, rail plate 3, beater wheel 4, chamber 5, main frame 6.
Test control box 1 can be realized the function of parameter setting and test control; Draw-gear 2 provides beater wheel 4 motions required outer power and power transmitting mechanism; Rail plate 3 secured in parallel can make slip cross bar 16 slide along parallel track in the both sides, top of chamber; The beater wheel of beater wheel 4 simulation impact road rollers is connected with slip cross bar 16 with connecting rod 20 through rocking arm 19; Chamber 5 is used for the splendid attire soil sample, for the impact-rolling model test provides necessary experimental enviroment; Main frame 6 provides stable arrangement platform for each parts of this device, and the integral body of being convenient to experimental provision moves.
Wherein, Test control box 1 comprises control panel 7, test CS 9, Test Switchboard 10, pulling speed controller 11; Wherein, Test CS 9, Test Switchboard 10, pulling speed controller 11 carry out integrated control through control panel 7, and test CS 9 is installed in the left end of rail plate 3, through the automatic triggering may command experimentation of buffer spring 15.
Draw-gear 2 comprises AC motor 26, drag-line 12, guide pulley 13, pulley strut 14; AC motor 26 is connected with test CS 9, Test Switchboard 10; Its break-make of may command; Guide pulley 13 is installed on the support 18 through pulley strut 14, and an end of drag-line 12 is fixed on the winding pulley 27 of AC motor 26, and the other end links to each other with slip cross bar 16 through being fixedly connected piece 17.
Test CS 9 is connected in the test control box 1 by lead 8 with AC motor 26, realizes integrated automatic control.
Winding pulley 27 is housed in the rotating shaft of AC motor 26, and its coiling speed should be complementary with test control speed.
Drag-line 12 is diameter 1.5～2mm thin tightwire, and the one of which end is fixed on the winding pulley 27 of motor, and the other end is connected with fixed connection piece 17 on the slip cross bar 16, the pulling motion of the striking wheel 4 of realizing liquidating.
Slip cross bar 16 upper sleeve throughs have the piece of fixed connection 17 and fastening through screw, are fixedly connected piece 17 and are connected with an end of drag-line 12.Be fixedly connected piece 17 and be cylindric, be fixedly connected piece 17 and play the effect that connects drag-line 12 and qualification rocking arm 19 positions, said apparatus is all detachable.
Beater wheel 4 is processed according to the impact road roller beater wheel of realistic simulation; Be connected on the slip cross bar 16 by rocking arm 19, connecting rod 20; Connecting rod 20 directly is fixed on by screw on the wheel shaft 30 of beater wheel 4, and rocking arm 19 is connected by transverse axis 21 with connecting rod 20, the snubber assembly of simulation impact road roller.Such design can retrain beater wheel swinging when advancing, but do not limit its freely impacting on direction of motion, realized the effect of impact road roller snubber assembly.
Chamber 5 is processed by rigid plate, reserves the visual windows of being processed by tempered glass 22 on the casing in front, and the left and right sides plate of chamber 5 is a little less than the front and back side plate, and a test platform 23 is respectively installed in its side.
Lay test control box 1 and AC motor 26 on the left side platform of main frame 6; AC motor 26 is installed on the trapped orbit 25, is convenient to adjust the position, settles chamber 5 on the right side crossbeam of main frame 6; Roller 24 is installed in the crossbeam bottom, and the integral body of being convenient to test unit moves.
A kind of impact-rolling model test apparatus is used to simulate the purposes of impact road roller impact-rolling foundation soil, comprises following steps:
(1) filling soil sample in chamber 5 makes the soil sample surfacing, and height maintains an equal level with chamber 5 side plates;
(2) energized is opened test control box 1, through the haulage speed of control panel 7 preset draw-gears 2;
(3) press Test Switchboard 10 then, draw-gear 2 is started and 4 motions of traction beater wheel, trigger test CS 9 when arriving the chamber left end automatically, AC motor 26 is opened circuit, accomplish one-shot and roll;
(4) beater wheel 4 is mentioned make it to break away from the soil body, and move to the preceding initial position of step (2);
(5) repeating step (4).
Wherein haulage speed is 0.6～1.5m/s in the step (2), and haulage speed is as the criterion with the similar calculating income value of model test.The multiplicity of step (4) is 10～40 times
In the conventional test, in chamber, load soil sample earlier, should guarantee the homogeneity and the initial stress state similar of the appearance of banketing as far as possible with undisturbed soil, the soil sample surfacing, height maintains an equal level with the left side plate of casing.In the process of banketing, can in the corresponding degree of depth of the soil body and scope, bury measurement equipments such as soil pressure cell, hole pressure meter underground according to content of the test and needs.After soil sample is loaded and to be finished, each parts of test unit are in place, can carry out the test of impact-rolling.In the process of the test, can change test parameters, the impact-rolling under the different affecting factors is studied.Can change pulling speed through the pulling speed controller and study the effect situation under the different crushing speed; Can pass through the crushing effect of the beater wheel of change quality research different quality; Can study the effect situation of the beater wheel of difformity size.Whenever after finishing battery of tests, need prepare soil sample again, begin next group then.
Research to the soil body microcosmic mechanism of action should be by particle imaging equipment, and the glass forms that see through on the chamber wallboard carry out observation and analysis.Banket finish after, the relative motion situation of observing earth particle is convenient in lateral movement in the wallboard that should the trying one's best of beater wheel presses close to be observed a side.
The above-mentioned description to embodiment is can understand and use the present invention for ease of the those of ordinary skill of this technical field.The personnel of skilled obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the invention is not restricted to the embodiment here, those skilled in the art are according to announcement of the present invention, and not breaking away from the improvement that category of the present invention makes and revise all should be within protection scope of the present invention.
Claims (10)
1. impact-rolling model test apparatus; It is characterized in that: comprise test control box (1), draw-gear (2), rail plate (3), beater wheel (4), chamber (5) and main frame (6); Wherein said draw-gear (2) comprises AC motor (26), drag-line (12), guide pulley (13) and pulley strut (14); One end of wherein said drag-line (12) is fixed on the winding pulley (27) of AC motor (26); The other end be connected fixed block (17) and link to each other, described guide pulley (13) is installed on the support (18) through pulley strut (14); Described rail plate (3) comprises two polished rods of parallel and level, and the top of polished rod is welded with sleeve (28), and every polished rod is separately fixed at the both sides of chamber (5) top by two supports perpendicular to the ground (18) through sleeve (28).
2. impact-rolling model test apparatus according to claim 1 is characterized in that: described test control box (1) comprises control panel (7), test CS (9), Test Switchboard (10), pulling speed controller (11);
Or described test CS (9) is positioned at the left end of rail plate (3).
3. impact-rolling model test apparatus according to claim 1 is characterized in that: winding pulley (27) is housed in the rotating shaft of described AC motor (26);
Or described AC motor (26) is connected with Test Switchboard (10) with the interior test CS (9) of test control box (1).
4. impact-rolling model test apparatus according to claim 1 is characterized in that: described drag-line (12) is the thin tightwire of diameter 1.5～2mm, and the one of which end is fixed on the winding pulley (27) of motor, and the other end is connected with slip cross bar (16);
Or described guide pulley (13) is installed on the pulley strut (14), and pulley strut (14) two ends are overlapped with sleeve (28), wear to be fixed on the support (18);
Or described test CS (9) and AC motor (26) be connected in the test control box (1) by lead (8), realizes integrated automatic control.
5. impact-rolling model test apparatus according to claim 1 is characterized in that: be coated with buffer spring (15) on the polished rod of said rail plate (3) respectively;
Or being with sliding sleeve (29) on the described rail plate (3), the sliding sleeve (29) of two rail plates (3) is nested with the two ends of slip cross bar (16).
6. impact-rolling model test apparatus according to claim 4 is characterized in that: there is sliding sleeve (29) at described slip cross bar (16) two ends;
Or the middle part of described slip cross bar (16) is coated with and is fixedly connected piece (17) and fastening through screw, is fixedly connected piece (17) and is connected with an end of drag-line (12), wherein is fixedly connected piece (17) and is cylindric.
7. impact-rolling model test apparatus according to claim 1; It is characterized in that: the wheel shaft (30) of described beater wheel (4) links to each other with rocking arm (19) through connecting rod (20); Wherein connecting rod (20) is fixed on by screw on the wheel shaft (30) of beater wheel (4), and wherein said rocking arm (19) is connected by transverse axis (21) with connecting rod (20);
Or said chamber (5) processed by rigid plate, is reserved with view window (22) on the panel of casing the place ahead, and view window (22) is processed by tempered glass, and the left and right sides plate of chamber (5) is a little less than the front and back side plate, and a test platform (23) is respectively installed in its outside.
8. impact-rolling model test apparatus according to claim 1; It is characterized in that: lay test control box (1) and AC motor (26) on the left side platform of described main frame (6); Settle chamber (5) on the crossbeam of right side, roller (24) is installed in the crossbeam bottom;
Or described AC motor (26) is installed on the trapped orbit (25).
9. arbitrary described impact-rolling model test apparatus is used to simulate the purposes of impact road roller impact-rolling foundation soil among the claim 1-8, it is characterized in that: comprise following steps:
(1) filling soil sample in chamber (5) makes the soil sample surfacing, and height maintains an equal level with chamber (5) side plate;
(2) energized is opened test control box (1), through the haulage speed of the preset draw-gear (2) of control panel (7);
(3) press Test Switchboard (10) then, draw-gear (2) is started and traction beater wheel (4) motion, trigger test CS (9) when arriving the chamber left end automatically, AC motor (26) is opened circuit, accomplish one-shot and roll;
(4) beater wheel (4) is mentioned make it to break away from the soil body, and move to the preceding initial position of step (2);
(5) repeating step (4).
10. purposes according to claim 9 is characterized in that: haulage speed is 0.6～1.5m/s in the described step (2);
Or the multiplicity of described step (4) is 10～40 times.
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| CN2012101332876A CN102661915A (en) | 2012-04-28 | 2012-04-28 | Impact rolling model tester and application thereof |
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| CN2012101332876A CN102661915A (en) | 2012-04-28 | 2012-04-28 | Impact rolling model tester and application thereof |
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| CN106323781A (en) * | 2015-06-30 | 2017-01-11 | 佛山出入境检验检疫局检验检疫综合技术中心(佛山国际旅行卫生保健中心) | Rolling strength test device for ceramic floor tile |
| CN108051271A (en) * | 2017-12-29 | 2018-05-18 | 中国地质大学（武汉） | A kind of hand-rail type geologic model test soil body layered rolling device |
| CN108279168A (en) * | 2018-02-01 | 2018-07-13 | 上海交通大学 | A kind of pulling force buffer oil cylinder model test simulator |
| CN109443729A (en) * | 2018-12-04 | 2019-03-08 | 苏州佳世德检测技术有限公司 | The experimental rig and test method that simulated automotive rolls |
| CN114755174A (en) * | 2022-06-13 | 2022-07-15 | 水利部交通运输部国家能源局南京水利科学研究院 | Impact rolling test device and method for simulating coarse-grained soil foundation in original stress state |
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| CN108279168A (en) * | 2018-02-01 | 2018-07-13 | 上海交通大学 | A kind of pulling force buffer oil cylinder model test simulator |
| CN108279168B (en) * | 2018-02-01 | 2024-04-23 | 上海交通大学 | Tensile force buffer oil cylinder model test simulation device |
| CN109443729A (en) * | 2018-12-04 | 2019-03-08 | 苏州佳世德检测技术有限公司 | The experimental rig and test method that simulated automotive rolls |
| CN109443729B (en) * | 2018-12-04 | 2024-03-19 | 江苏佳世德检测技术有限公司 | Test device and test method for simulating rolling of automobile |
| CN114755174A (en) * | 2022-06-13 | 2022-07-15 | 水利部交通运输部国家能源局南京水利科学研究院 | Impact rolling test device and method for simulating coarse-grained soil foundation in original stress state |
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Application publication date: 20120912 |