CN103018425B - Manual screw type self weight loading device for physical landslide model test - Google Patents
Manual screw type self weight loading device for physical landslide model test Download PDFInfo
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- CN103018425B CN103018425B CN201210546791.9A CN201210546791A CN103018425B CN 103018425 B CN103018425 B CN 103018425B CN 201210546791 A CN201210546791 A CN 201210546791A CN 103018425 B CN103018425 B CN 103018425B
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Abstract
The invention discloses a manual screw type self weight loading device for a physical landslide model test. The self weight loading device comprises a bottom plate, a sliding surface adjustment mechanism and a thrust loading mechanism, wherein the sliding surface adjustment mechanism is positioned on the bottom plate and comprises a sliding panel, upper connecting rods, lower connecting rods, a supporting plate, inserting blocks, inserting grooves, screw rods and hand wheels; the supporting plate is fixed to the bottom plate; the front part and the rear part of the supporting plate are hinged with the lower ends of a pair of the lower connecting rods respectively; the upper ends of the lower connecting rods are hinged with the upper connecting rods to form connecting rods; each pair of the upper connecting rods is hinged with one inserting block; each pair of the lower connecting rods is hinged with one inserting groove; the screw rods penetrate through the inserting grooves and are in threaded connection with the corresponding inserting blocks; the bottom ends of the screw rods are fixed with the hand wheels; the front end of the sliding panel is hinged with the tops of a pair of the upper connecting rods at the front part of the supporting plate; the rear end of the sliding panel is hinged with the tops of a pair of the upper connecting rods at the rear part of the supporting plate; the thrust loading mechanism comprises a loading platform; and the loading platform can slide frontwards and backwards along the sliding panel as the bottom surface of the loading platform is in sliding fit with the top surface of the sliding panel.
Description
Technical field
The invention belongs to and belong to geologic hazard model test field, refer to a kind of landslide physical model test hand-operated screw stem type deadweight charger particularly.
Background technology
Landslide physical model test belongs to the category of geomechanical model test, its theory originates from the structural model test early in the twentieth century set up, and develops gradually at present and extends many research directions such as landslide site-models test, landslide floor friction model test, landslide architecture model test, landslide centrifugal model test and landslide unified model test.Wherein, landslide architecture model test refers in common gravity field, by adopting the analog material analogue formation meeting criterion of similarity in frame model groove, measures its distortion and each mechanics parameters when model meets Main Boundaries conditional likelihood.This test can observe the motion feature of gliding mass in sliding process intuitively, also can obtain the parameter such as stress, strain, displacement on landslide quantitatively, can illustrate the mechanism coming down and breed and develop from the angle of quantitative and qualitative analysis.
Under the architecture model test condition of landslide, landslide physical is generally deform under force conditions outside or destroy.The major way of External Force Acting has: the seismic event of mechanical shock or blasting from simulation; Change the seepage effect that the water-level fluctuation of lower portion height of water level simulated reservoir causes; Seepage effect under rainfall simulator simulated rainfall conditions; The mode of artificial preloading provides Thrust of Landslide at landslide physical trailing edge; On landslide, trailing edge arranges steel plate, and applies Thrust of Landslide etc. under hydraulic jack or the effect of MTS hydraulic servo thrust device.
Wherein, also there is following limitation or defect in the mode for landslide physical trailing edge applied thrust:
(1) thrust of existing landslide physical trailing edge loads and control system often complex structure, complex operation, and the landslide trailing edge thrust be difficult to meet fast, stablize, continuing loads requirement;
(2) although the mode of the artificial preloading of existing employing can apply stable acting force at landslide trailing edge, accurate control is difficult to the size of Thrust of Landslide and direction, apply the boundary condition of external force and actual conditions are not inconsistent.
Summary of the invention
Technical matters to be solved by this invention is just to provide a kind of landslide physical model test hand-operated screw stem type deadweight charger, landslide physical trailing edge can be regulated easily and quickly to load the size and Orientation of thrust, the thrust of applying is consistent with landslide actual boundary condition, and realize loading by the deadweight of demarcating weight, loading force is stable lasting.
For solving the problems of the technologies described above, a kind of landslide physical model test hand-operated screw stem type deadweight charger provided by the invention, comprises base plate, slipping plane governor motion and thrust load maintainer, described slipping plane governor motion is positioned on base plate, slipping plane governor motion comprises slidable panels, upper links, lower link, back up pad, inserted block, slot, screw rod and handwheel, described back up pad is fixed on base plate, the front and rear of back up pad is hinged with the lower end of a pair lower link respectively, the upper end of each lower link and a upper links hinged, form connecting rod, every a pair upper links and an inserted block hinged, every a pair lower link and a slot hinged, described screw rod passes slot and is threaded with corresponding inserted block, bottom and the handwheel of screw rod are fixed, for rotating under the drive of handwheel, the front end of described slidable panels and a pair upper links top of back up pad front portion hinged, a pair upper links top at rear end and back up pad rear portion is hinged, described thrust load maintainer comprises the weighted platform for carrying weight, the bottom surface of weighted platform and the end face of slidable panels is slidably matched, can along slidable panels slide anteroposterior.
In technique scheme, the bottom surface of described weighted platform is shiny surface, the end face both sides of described slidable panels are provided with arris, for the guiding of weighted platform, two arris are respectively equipped with a row hole and hole is relative between two, be provided with slide bar in relative holes, the bottom surface of weighted platform is coordinated by described sliding bar with the end face of slidable panels.
In technique scheme, the rear end of described weighted platform is provided with mortise lock, temporary fixed for weighted platform and slidable panels.
In technique scheme, the screw thread self-locking conditions satisfied between described screw rod and associated socket.
In technique scheme, described slidable panels front end is provided with angle dial, for the reading at the inclination angle of slidable panels.
In technique scheme, the front and rear portions of described base plate is respectively equipped with opening, and opening is corresponding with the position of described handwheel, for passing handwheel.
In technique scheme, below described base plate, be provided with several rows travelling wheel.
Compared with prior art, beneficial effect of the present invention is:
(1) this charger can be applicable to landslide architecture model test, by trailing edge dead-weight controlled loading simulation landslide inertial thrust, realizes the research of the incomplete geomechanics model in landslide, greatly reduces the making intensity of complete geomechanics model;
(2) this charger is realized by manual adjustments completely, and structure is simple, is easy to operation, with low cost;
(3) this charger is achieved loading highly and continuous, accurate, the Sustainable Control of load angle by two pairs, the front and back connecting rod regulated by two screw rods, makes the thrust applied meet well with landslide actual boundary condition;
(4) this charger landslide physical thrust of carrying out under being applicable to differing heights loads, for the Landslide Model of different sliding surface height without the need to making the charger of differing heights one by one;
(5) this charger is applicable to the landslide physical of different sliding surface angle, without the need to making the charger of different angles one by one;
(6) sliding bar in this charger on the bottom surface of weighted platform and slidable panels with the use of, reduce the frictional resistance effect in weighted platform downslide process greatly, effectively convert gravity load to thrust;
(7) in this charger, the rear end of weighted platform is provided with mortise lock, achieves the temporary fixed of weighted platform and slidable panels easily;
(8) this charger is as an independent system, and with landslide physical framework apart, durability is good, reusable;
(9) because this bulking block intensity is high, rigidity large, component occurs that the possibility destroyed is very little once in a while, even if occur damaged, is also easy to repair or change;
(10) setting of base bottom row travelling wheel, is convenient to movement and the transport of whole device;
(11) this deadweight charger can be widely used in the loading of thrust in the geomechanical model test comprising the types such as rock landslide o earth slope, side slope, has a extensive future, remarkable in economical benefits.
Accompanying drawing explanation
Fig. 1 is the perspective view of one embodiment of the invention.
Fig. 2 is the front view of Fig. 1 device.
Fig. 3 is the rear view of Fig. 1 device.
Fig. 4 is the right view of Fig. 1 device.
Fig. 5 is the postrotational vertical view of Fig. 1 device.
Fig. 6 is the using state schematic diagram of Fig. 1 application of installation when the architecture model that comes down is tested.
In figure: 1-mortise lock, 2-weighted platform, 3-slidable panels, 4-slide bar, 5-upper links, 6-inserted block, 7-bearing pin, 8-slot, 9-handwheel, 10-contiguous block, 11-fixed block, 12-screw rod, 13-lower link, 14-back up pad, 15-base plate, 16-road wheel, 17-test framework, 18-gliding mass, 19-slide strips, 20-sliding bed.
Embodiment
Below in conjunction with accompanying drawing, specific embodiments of the invention are described in further detail.
As shown in Figures 1 to 5, a kind of landslide physical model test hand-operated screw stem type deadweight charger of the present invention, comprises base plate 15, slipping plane governor motion and thrust load maintainer, specifically.
Several rows travelling wheel 16 is provided with, so that the movement of whole device below base plate 15.
Slipping plane governor motion is positioned on base plate 15, and the slipping plane governor motion of the present embodiment comprises slidable panels 3, upper links 5, lower link 13, back up pad 14, inserted block 6, slot 8, screw rod 12 and handwheel 9.Back up pad 14 is fixed on base plate 15, the front and rear of back up pad 14 respectively by the fixed block 11 of " L " type and the lower end of a pair lower link 13 hinged, the upper end of each lower link 13 respectively hinged by bearing pin 7 with a upper links 5, form connecting rod.Every a pair upper links 5 and an inserted block 6 hinged, every a pair lower link 13 and a slot 8 hinged, screw rod 12 is through slot 8 and be threaded with corresponding inserted block 6, and like this, the front and rear of back up pad 14 is respectively arranged with a screw rod 12.The bottom of each screw rod 12 and a handwheel 9 are fixed, for rotating under the drive of handwheel 9.It is hinged that bearing pin 7 is passed through at the front end of slidable panels 3 and a pair upper links 5 top of back up pad 14 front portion, and a pair upper links 5 top at rear end and back up pad 14 rear portion is hinged by bearing pin 7.The height of slidable panels 3 is regulated by the adjustable height on two groups of connecting rod tops, and the inclination angle of slidable panels 3 is then determined by the OQ t height on two groups of connecting rod tops.Under original state, each inserted block 6 of slipping plane governor motion is nested in associated socket 8, under the rotation of handwheel 9, inserted block 6 is separated gradually with associated socket 8, and drive a pair upper links 5 and a pair lower link 13 to open respectively, the top of connecting rod rises, drives slidable panels 3 to move.For guaranteeing the convenient fixing of slidable panels 3, the screw thread self-locking conditions satisfied between screw rod 12 and associated socket 8, possesses auto-lock function.For the lifting avoiding base plate 15 to interfere handwheel 9, U-shaped opening can be offered in the corresponding position of the front and rear portions of base plate 15, handwheel 9.In addition, angle dial (not shown in the figures anticipate out) is installed outside slidable panels 3 slide bar 4 foremost, the reading at slidable panels 3 inclination angle can be carried out.
The thrust load maintainer of the present embodiment comprises the weighted platform 2 for carrying weight, and the inclination angle of weighted platform 2 bottom surface should be identical with slide strips 19 inclination angle of Landslide Model.The bottom surface of weighted platform 2 is flat smooth face, the end face both sides of above-mentioned slidable panels 3 are provided with arris, play the guiding role, two arris are respectively equipped with a row hole and hole is relative between two, be provided with slide bar 4 in relative holes, the bottom surface of weighted platform 2 and the end face of slidable panels 3 are slidably matched by these slide bars 4.The end face of weighted platform 2 is surface level or concavity, for carrying the object through demarcating after weight, make it to glide along slidable panels 3 with weighted platform 2 under deadweight condition, acted on Landslide Model by weighted platform 2 front panel, and the gravity covering preloading above provides corresponding horizontal loading along the component of slidable panels 3 horizontal direction.Also be provided with mortise lock 1 in the rear end of weighted platform 2, before using for device, weighted platform 2 and slidable panels 3 is temporary fixed.
As shown in Figure 6, the roughly process applying the present invention to landslide architecture model test is:
One, early-stage preparations
1, for Research Requirements, according to the principle of similitude, the landslide scale model after generalization is drafted; With similarity model test result for standard, prepare gliding mass 18, slide strips 19, sliding bed 20 analog material respectively.The analog material that preparation is even, water percentage is constant is adopted to make Landslide Model according to the landslide scale model spatial shape drafted;
2, measure the inclination angle of Landslide Model trailing edge slide strips 19, make corresponding weighted platform 2;
Two, the adjustment of device is with fixing
3, charger of the present invention is pushed into assigned address, and just to landslide trailing edge, by locked for the road wheel 16 below charger base plate 15 fixing;
4, controlled the relative distance of anterior slide block 6, chute 8 by the handwheel 9 of anterior screw rod 12 end, to regulate the angle of corresponding upper links 5 and lower link 13, now slidable panels 3 front end is highly consistent with Landslide Model trailing edge slide strips 19;
5, the relative distance of rear portion slide block 6, chute 8 is controlled by the handwheel 9 of rear portion screw rod 12 end, to regulate the angle of corresponding upper links 5 and lower link 13, angle dial in the process by being arranged on front end slide bar 4 reads the inclination angle of slidable panels 3, stops the rotation of handwheel 9 and keep stable by the self-locking of screw rod 12 when the inclination angle that slidable panels 3 is formed is consistent with trailing edge slide strips 19 inclination angle, landslide;
Three, thrust loads
6, demarcate weighted platform 2 weight, and load needs according to thrust, the weight required for weighing;
7, weighted platform 2 is installed;
8, open the mortise lock 1 at weighted platform 2 rear portion, hand steered weighted platform 2 make its slip until with landslide trailing edge contact after, unclamp both hands;
9, on weighted platform 2, vertically, the weight demarcated slowly is placed, until Landslide Deformation or destruction.It should be noted that the end face of weighted platform 2 should be not less than gliding mass 18 apical side height in order to avoid gliding mass 18 in loading procedure to extrude from weighted platform 2 top, accordingly, when making weighted platform 2, suitably can improve the height of its vertical loading surface;
Four, off-test
10, the weight of preloading on first removal weighted platform 2, then by weighted platform 2 removal;
11, rotate handwheel 9, slidable panels 3 is declined, until inserted block 6 is nested in slot 8 completely;
12, unclamp the braking of base plate 15 bottom row travelling wheel 16, this thrust charger is moved to appointed place.
Core of the present invention is the setting of slipping plane governor motion, to make to adopt from the thrust size and Orientation of reloading continuously, accurately adjustable, and the thrust of applying is consistent with landslide actual boundary condition, and loading force is stable.So its protection domain is not limited to above-described embodiment.Obviously, those skilled in the art can carry out various change and distortion to the present invention and not depart from the scope of the present invention and spirit, such as: the sliding matching mode between weighted platform 2 and slidable panels 3 is not limited to the structure of flat smooth face in embodiment and slide bar 4, as long as be convenient to the relative slide anteroposterior of the two; When the stroke that handwheel 9 moves downward is not less than base plate, base plate 15 also can not establish opening etc.If these are changed and distortion belongs in the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these changes and distortion.
Claims (7)
1. a landslide physical model test hand-operated screw stem type deadweight charger, is characterized in that: comprise base plate (15), slipping plane governor motion and thrust load maintainer, described slipping plane governor motion is positioned on base plate (15), slipping plane governor motion comprises slidable panels (3), upper links (5), lower link (13), back up pad (14), inserted block (6), slot (8), screw rod (12) and handwheel (9), described back up pad (14) is fixed on base plate (15), the front and rear of back up pad (14) is hinged with the lower end of a pair lower link (13) respectively, upper end and a upper links (5) of each lower link (13) are hinged, form connecting rod, every a pair upper links (5) is hinged with an inserted block (6), every a pair lower link (13) is hinged with a slot (8), described screw rod (12) is through slot (8) and be threaded with corresponding inserted block (6), screw thread self-locking conditions satisfied between described screw rod (12) and associated socket (8), the bottom of screw rod (12) and handwheel (9) are fixed, for rotating under the drive of handwheel (9), a pair upper links (5) top of the front end of described slidable panels (3) and back up pad (14) front portion is hinged, a pair upper links (5) top at rear end and back up pad (14) rear portion is hinged, described thrust load maintainer comprises the weighted platform (2) for carrying weight, the bottom surface of weighted platform (2) and the end face of slidable panels (3) is slidably matched, can along slidable panels (3) slide anteroposterior.
2. a kind of landslide physical model test hand-operated screw stem type deadweight charger according to claim 1, it is characterized in that: the bottom surface of described weighted platform (2) is shiny surface, the end face both sides of described slidable panels (3) are provided with arris, for the guiding of weighted platform (2), two arris are respectively equipped with a row hole and hole is relative between two, be provided with slide bar (4) in relative holes, the bottom surface of weighted platform (2) and the end face of slidable panels (3) are slidably matched by described slide bar (4).
3. a kind of landslide physical model test hand-operated screw stem type deadweight charger according to claim 1, is characterized in that: the rear end of described weighted platform (2) is provided with mortise lock (1), temporary fixed for weighted platform (2) and slidable panels (3).
4. a kind of landslide physical model test hand-operated screw stem type deadweight charger according to claim arbitrary in claims 1 to 3, it is characterized in that: described slidable panels (3) front end is provided with angle dial, for the reading at the inclination angle of slidable panels (3).
5. a kind of landslide physical model test hand-operated screw stem type deadweight charger according to claim arbitrary in claims 1 to 3, it is characterized in that: the front and rear portions of described base plate (15) is respectively equipped with opening, opening is corresponding with the position of described handwheel (9), for passing handwheel (9).
6. a kind of landslide physical model test hand-operated screw stem type deadweight charger according to claim 4, it is characterized in that: the front and rear portions of described base plate (15) is respectively equipped with opening, opening is corresponding with the position of described handwheel (9), for passing handwheel (9).
7. a kind of landslide physical model test hand-operated screw stem type deadweight charger according to claim arbitrary in claims 1 to 3, is characterized in that: described base plate (15) below is provided with several rows travelling wheel (16).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210546791.9A CN103018425B (en) | 2012-12-17 | 2012-12-17 | Manual screw type self weight loading device for physical landslide model test |
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| CN201210546791.9A CN103018425B (en) | 2012-12-17 | 2012-12-17 | Manual screw type self weight loading device for physical landslide model test |
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| CN103018425A CN103018425A (en) | 2013-04-03 |
| CN103018425B true CN103018425B (en) | 2015-02-11 |
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| CN103234806B (en) * | 2013-04-30 | 2015-12-09 | 吉林大学 | A kind of Low-gravity environmental simulation test device |
| CN106908234B (en) * | 2017-03-21 | 2018-11-16 | 西北工业大学 | For the load loading system of cabin door lock reliability test and its selection method of disk spring group |
| CN106841573A (en) * | 2017-04-12 | 2017-06-13 | 中铁西北科学研究院有限公司 | A kind of debris flows simulation experimental rig and test method |
| CN108107188B (en) * | 2017-12-12 | 2019-12-17 | 中国地质大学（武汉） | Testing device with adjustable loading angle |
| CN110794113A (en) * | 2018-08-03 | 2020-02-14 | 西南交通大学 | Multi-physical-field coupling test device and method for simulating slope instability |
| CN111236326A (en) * | 2020-01-15 | 2020-06-05 | 厦门海石生态环境股份有限公司 | Abandoned mine slope stability detection method |
| CN111983185B (en) * | 2020-07-24 | 2023-12-01 | 河海大学 | Reservoir bank water level change and slope angle variable landslide model test device and method under earthquake and rainfall coupling effect |
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| JP2004133004A (en) * | 2002-10-08 | 2004-04-30 | Sabo Koho Center | Model device for landslide countermeasure exhibition |
| CN2700305Y (en) * | 2004-04-01 | 2005-05-18 | 中国工程物理研究院机械制造工艺研究所 | Scissor-fork type hand driven hydraulic elevator |
| CN201015073Y (en) * | 2006-12-01 | 2008-01-30 | 三峡大学 | Large landslide physical model experiment system considering rainwater effect |
| JP5327473B2 (en) * | 2009-10-21 | 2013-10-30 | 株式会社ダイフク | Work lifting support device |
| KR20120120632A (en) * | 2011-04-25 | 2012-11-02 | 이동연 | Experiment device for earthflow |
| CN202138987U (en) * | 2011-06-28 | 2012-02-08 | 刘振安 | Multifunctional lifting platform simple in structure, handy in carrying and easy in operation |
| CN102331489B (en) * | 2011-07-19 | 2014-04-02 | 中国科学院力学研究所 | System for testing physical model for large-scale landslides under action of multiple factors |
| CN102681028B (en) * | 2012-06-04 | 2013-11-20 | 中国地质大学（武汉） | Multi-operating mode frame type portable landslide testing device for geomechanical model |
| CN102680663B (en) * | 2012-06-04 | 2013-11-20 | 中国地质大学（武汉） | Water level automatic control system of landslide physical model test |
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