CN109213206A - A kind of upper hopper chute vertical angle regulating device based on landslide physical model test - Google Patents

A kind of upper hopper chute vertical angle regulating device based on landslide physical model test Download PDF

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Publication number
CN109213206A
CN109213206A CN201810912386.1A CN201810912386A CN109213206A CN 109213206 A CN109213206 A CN 109213206A CN 201810912386 A CN201810912386 A CN 201810912386A CN 109213206 A CN109213206 A CN 109213206A
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China
Prior art keywords
vertical angle
fan
hopper chute
section
subsegment
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Application number
CN201810912386.1A
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Chinese (zh)
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CN109213206B (en
Inventor
葛云峰
郑海
李信杰
陈宏智
林资山
钟鹏
张莉
闻炼
方可
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China University of Geosciences
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China University of Geosciences
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Priority to CN201810912386.1A priority Critical patent/CN109213206B/en
Publication of CN109213206A publication Critical patent/CN109213206A/en
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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00Control of position or direction
    • G05D3/10Control of position or direction without using feedback

Abstract

The present invention provides a kind of upper hopper chute vertical angle regulating device based on landslide physical model test, including pedestal, lower groove and Ding Ju mechanism, pedestal is fixed on landslide, lower groove and Ding Ju mechanism are respectively arranged at pedestal both ends, regulating device further includes that vertical angle adjusts section and upper groove body, vertical angle adjusts section for fan-shaped trough body structure and including multiple fan-shaped subsegments, all sector subsegments are successively flexibly connected from top to bottom and can be overlapped gathering, vertical angle adjusts section the lowermost sector subsegment and connects lower groove inner end, the fan-shaped subsegment that vertical angle adjusts section the top connects upper groove body lower end, upper groove body upper end connects Ding Ju mechanism, Ding Ju mechanism adjusts section rotation around vertical angle in raising or decline driving upper groove body, and vertical angle is made to adjust the fan-shaped subsegment expansion of section or collapse, to make upper hopper chute and lower slot in upper groove body Internal gliding groove forms predetermined angle.Beneficial effects of the present invention: a wide range of continuous flexible modulation of upper hopper chute vertical angle is realized.

Description

A kind of upper hopper chute vertical angle regulating device based on landslide physical model test
Technical field
The present invention relates to landslide physical test fields more particularly to a kind of upper hopper chute based on landslide physical model test to hang down Squareness regulating device.
Background technique
The mechanism of production on landslide, influence factor, motion feature and landslide disaster prediction be always domestic and foreign scholars The hot issue of research.It comes down as a kind of common geological disaster, seriously threatens people life property safety, carry out landslide object It is particularly significant to manage model investigation.Landslide physical model test can carry out indoors, and can preferably react landslide calamity Locating geologic feature when evil occurs, acquired results are relatively accurate, save the time, reduce the consumption of human and material resources, therefore room Interior physical experiments are used in the research on landslide by numerous researchers.
Although indoor landslide physical model test is widely used, indoor landslide physical model test generally requires to adjust Downslide section Relative vertical angle on landslide, and the landslide upper hopper chute vertical angle tune of existing indoor landslide physical model test device Regulating device often there is problems:
(1) since the size of existing landslide physical model test device is larger, the Relative vertical angular adjustment of upper downslide section Often time-consuming effort;
(2) existing landslide physical model test device can only realize the adjusting of angle, and upper lower groove Relative vertical angle Adjustable range and adjusting after device may hinder not accounting for caused by sliding movement.
(3) material performance requirement that existing upper hopper chute vertical angle regulating device uses is higher, expensive, is unfavorable for sliding The extensive development of slope physical experiments.
Summary of the invention
In view of this, the embodiment provides a kind of upper hopper chute vertical angle based on landslide physical model test Regulating device.
The embodiment of the present invention provides a kind of upper hopper chute vertical angle regulating device based on landslide physical model test, packet Pedestal, lower groove and Ding Ju mechanism are included, the pedestal is fixed on landslide, and sliding slot, the lower groove are set in the lower groove The pedestal both ends are respectively arranged at the Ding Ju mechanism, the regulating device further includes that vertical angle adjusts section and upper slot Body, sets upper hopper chute in the upper groove body, and it is fan-shaped trough body structure and including multiple fan-shaped subsegments that the vertical angle, which adjusts section, this A little sector subsegments are from top to bottom successively flexibly connected and can be overlapped gathering, and the vertical angle adjusts section the lowermost sector subsegment The gliding groove inner end is connected, the fan-shaped subsegment that the vertical angle adjusts section the top connects the upper hopper chute lower end, institute It states upper groove body upper end and connects the Ding Ju mechanism, the Ding Ju mechanism drives the upper groove body to hang down around described in raising or decline Squareness adjusts section rotation, and the vertical angle is made to adjust the fan-shaped subsegment expansion of section or collapse, to make the upper hopper chute Predetermined angle is formed with the gliding groove.
Further, two fan shape baffles that the fan-shaped subsegment includes curved plate and is oppositely arranged, the two fan-shaped gears Plate lower end is respectively perpendicular the connection curved plate both ends, all sector subsegments width of the fan shape baffle and institute from top to bottom The radius for stating fan shape baffle is gradually increased, and curved plate bottom surface both ends are respectively provided with one first annulus, the fan shape baffle Upper end be equipped with hinge hole, the hinge hole of all sector subsegments be aligned and is packed into that pin shaft is hinged, the two of each sector subsegment First annulus connects two first annulus of adjacent fan-shaped subsegment with two connecting ropes respectively, and the vertical angle adjusts section the top Fan-shaped subsegment is fixedly connected on the upper hopper chute lower port, and the vertical angle adjusts section the lowermost sector subsegment and is fixedly connected In the gliding groove inner end.
Further, it includes the nine fan-shaped subsegments, the sector of each fan-shaped subsegment that the vertical angle, which adjusts section, The angle of baffle is 10 °.
Further, the vertical angle adjusts section the lowermost sector subsegment and is equipped with two second annulus, two connections Annulus is respectively arranged at the lateral surface lower end of two fan shape baffles, and the lower end of two lateral surface of upper groove body is respectively provided with a third Annulus, ipsilateral second annulus are connected with the third annulus with spring.
Further, all fan shape baffle upper ends are equipped with disk, and the center of circle of the disk is equipped with the hinge hole.
Further, it is identical with the lower port section of the upper hopper chute and two to adjust section upper port section for the vertical angle Person, which is aligned, to be welded to connect, and the vertical angle adjusts that section lower port section is identical with gliding groove interior side port section and the two Alignment is welded to connect.
Further, the Ding Ju mechanism is hydraulic jack, and hydraulic jack lower end axis is articulated with the pedestal On, upper shaft is articulated with upper groove body upper end bottom.
The technical solution that the embodiment of the present invention provides has the benefit that of the invention a kind of based on landslide physics mould The upper hopper chute vertical angle regulating device of type test, setting can be overlapped the vertical angle tune of gathering between upper groove body and lower groove Segment realizes that upper hopper chute and gliding groove predetermined angular are adjusted, can a wide range of flexible modulation, vertical angle adjusts section and uses fan groove Body structure effectively reduces gliding mass by resistance suffered by upper groove body and lower groove junction, ensure that landslide physical Gliding mass reaches the initial velocity of lower groove during test.
Detailed description of the invention
Fig. 1 is a kind of structural representation of the upper hopper chute vertical angle regulating device based on landslide physical model test of the present invention Figure;
Fig. 2 is a kind of structural blast of the upper hopper chute vertical angle regulating device based on landslide physical model test of the present invention Figure;
Fig. 3 is 1 structural schematic diagram of upper groove body in Fig. 1;
Fig. 4 is the structural schematic diagram that vertical angle adjusts section 2 in Fig. 1;
Fig. 5 is the structural schematic diagram of lower groove 3 in Fig. 1;
Fig. 6 is the structural schematic diagram of hydraulic jack 4 in Fig. 1;
Fig. 7 is the structural schematic diagram of pedestal 5 in Fig. 1;
Fig. 8 is that a kind of upper hopper chute based on landslide physical model test of the present invention hangs down when vertical angle adjusting section fully comes together The schematic diagram of squareness regulating device;
Fig. 9 is that a kind of upper hopper chute based on landslide physical model test of the present invention is vertical when vertical angle adjusts half expansion of section The schematic diagram of angle adjustment device;
Figure 10 is that vertical angle adjusts a kind of upper hopper chute based on landslide physical model test of present invention when section is fully deployed The schematic diagram of vertical angle regulating device.
1- upper groove body, 11- first straight line slideway, the first restraining plate of 12-, 13- crossbeam, the first pin hole of 14-, 15- third Annulus, 2- vertical angle adjust section, 21- curved plate, 22- fan shape baffle, 23- hinge hole, the first annulus of 24-, the circle of 25- second Ring, 26- nylon rope, 27- spring, 3- lower groove, 31- second straight line slideway, the second restraining plate of 32-, 4- hydraulic jack, 41- Second pin hole, the first pin of 42-, 43- third pin hole, 5- pedestal, 51- crossbeam, the 4th pin hole of 52-, 53- second are sold Nail.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention Formula is further described.
Fig. 1 and Fig. 2 are please referred to, the embodiment provides a kind of upper hopper chutes based on landslide physical model test to hang down Squareness regulating device, including upper groove body 1, vertical angle adjust section 2, lower groove 3, Ding Ju mechanism and pedestal 5, in the present embodiment The Ding Ju mechanism selects hydraulic jack 4.
Referring to FIG. 3, the upper groove body 1 is including first straight line slideway 11 and positioned at 11 two sides of first straight line slideway Two first restraining plates 12, two first restraining plate, 12 lower ends, which are respectively perpendicular, is fixed on the 11 two sides shape of first straight line slideway At upper hopper chute, 1 upper port of upper groove body is upper hopper chute arrival end, the upper end bottom welding beam of the first straight line slideway 11 13, weld two parallel steel discs in the middle part of the crossbeam 13, each parallel steel disc is equipped with one first pin hole 14, and described first 12 outside lower end of restraining plate is welded with third annulus 15.
Referring to FIG. 4, the vertical angle adjusts section 2 by 9 fan-shaped subsegments and connects the more of them in the present embodiment Section connecting rope 26 forms, and the connecting rope 26 selects nylon rope, and the sector subsegment is by curved plate 21 and the arcuate bottom Two fan shape baffles 22 of 21 two sides of plate are constituted, and two fan shape baffles 22 are perpendicularly fixed at 21 both ends of curved plate, each The angle of the fan shape baffle 22 of the sector subsegment is 10 °, and 9 fan-shaped subsegments are followed successively by the first fan when being fully deployed from top to bottom Shape subsegment to the 9th fan-shaped subsegment, all sector subsegments from top to bottom the width of the curved plate and the fan shape baffle half Diameter is gradually increased, and each fan-shaped subsegment next fan-shaped subsegment adjacent thereto is compared, the width of curved plate 21 Increase the thickness of twice of fan shape baffle 22, the radius of fan shape baffle 22 increases the thickness of curved plate 21, all fan shape baffles 22 apex angles are upper end and are equipped with identical disk, and the disk the center point is equipped with the hinge hole 23 of same size, the fan-shaped son It is set on 21 outer surface of curved plate of section there are two symmetrical first annulus 24, all sector subsegments pass through the hinge of its fan shape baffle 22 Hole 23 is connect to be articulated on a pin shaft, 4 first annulus 24 of adjacent sector subsegment two-by-two with respect to and opposite two described first Annulus 24 is connected with the nylon rope 26, the of length no more than fan-shaped subsegment of the nylon rope 26 between the adjacent fan-shaped subsegment The arc length of bottom, it is arrival end that the vertical angle, which adjusts 2 upper end of section, and lower port is outlet end, and the vertical angle is adjusted 22 outer surface of two sides fan shape baffle of 2 the lowermost sector subsegments of section respectively sets second annulus 25, and the vertical angle is adjusted 2 arrival ends of section are identical as upper hopper chute outlet end section, and the two is welded to connect.
Referring to FIG. 5, the lower groove 3 is including second straight line slideway 31 and positioned at 31 two sides of second straight line slideway Second restraining plate 32, two second restraining plates 32 are perpendicularly fixed at 31 two sides of second straight line slideway and form gliding groove, institute Stating 3 inner end of lower groove is gliding groove arrival end, and the arrival end adjusts section 2 with the vertical angle and exports end section phase Together, the two is welded to connect.
Referring to FIG. 6,4 upper end of hydraulic jack is equipped with piston rod, lower end is equipped with lever handle, presses the lever Handle can be such that the piston rod extends, and the piston rod upper end is equipped with the second pin hole 41, second pin hole 41 and described First pin hole 1 is hinged by the first pin 42, and the upper groove body 1 and the hydraulic jack 4 can first pins 14 For axis relative rotation, 4 lower end of hydraulic jack is equipped with third pin hole 43.
Referring to FIG. 7, the fixed lower groove 3 in described 5 one end of pedestal, the other end are fixed with crossbeam 51, the crossbeam 51 Two parallel steel discs of upper connection, the two parallel steel disc are equipped with two the 4th opposite pin holes 52, and the third pin hole 43 is set It is placed between two the 4th pin holes 52 and hinged by horizontally the second pin 53, the hydraulic jack 4 is with second Pin 53 is that shaft is rotatable, and the hydraulic jack and the pedestal are hinged, both ensure that the stability of described device, simultaneously Also enough counter-forces are provided for the hydraulic jack, so that adjusting more easy and flexible.
The vertical angle adjusts the second annulus 25 of 22 outer surface of two sides fan shape baffle of 2 the lowermost sector subsegment of section It is connect respectively with the third annulus 15 in 1 liang of outside of upper groove body by spring 27, length when spring 27 is in relaxed state is less than Minimum length between corresponding two annulus, the spring 27 has sufficiently high stiffness factor, under the action of hydraulic jack 4 It can just extend.
Fig. 8~Figure 10 is please referred to, the adjusting operation of upper hopper chute vertical angle regulating device of the invention is, described before adjusting Vertical angle adjusts section 2 and fully comes together as shown in Figure 8, and all sector fields are all overlapped together, repeatedly hydraulic thousand described in pressure-raising The lever handle on jin top 4, the piston rod elongation of the hydraulic jack 4, drives the upper groove body 1 and the vertical angle to adjust The entirety that topmost the first fan-shaped subsegment forms of section 2, the hinge hole 23 around the fan shape baffle 22 of the first fan-shaped subsegment two sides revolve Turn, two springs 27 extend, and the vertical angle adjusts the nylon between the first fan-shaped subsegment of section 2 and the second fan-shaped subsegment Rope is gradually extended and is tightened, and then the second fan-shaped subsegment is driven to rotate around hinge hole 223, and spring 27 continues to extend, enter The vertical angle as shown in Figure 9 adjusts 2 half unfolded state of section, the nylon between the second fan-shaped subsegment and third sector subsegment Rope 27 is gradually extended and tightened ..., and the extremely angle of the first straight line slideway and the second straight line slideway reaches predetermined angular, The vertical angle for completing the upper hopper chute and the gliding groove is adjusted, and can carry out landslide physical model test, Figure 10 is vertical Angular adjustment section when being fully deployed the angle of the upper hopper chute and the gliding groove reach maximum, the predetermined angular can be Between 10 °~90 °, a wide range of continuous flexible modulation of upper hopper chute vertical angle is realized.
Herein, the nouns of locality such as related front, rear, top, and bottom are to be located in figure with components in attached drawing and zero Part mutual position defines, only for the purpose of expressing the technical solution clearly and conveniently.It should be appreciated that the noun of locality Use should not limit the claimed range of the application.
In the absence of conflict, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (7)

1. a kind of upper hopper chute vertical angle regulating device based on landslide physical model test, it is characterised in that: including pedestal, under Groove body and Ding Ju mechanism, the pedestal are fixed on landslide, and sliding slot is set in the lower groove, and the lower groove and the top are lifted Mechanism is respectively arranged at the pedestal both ends, and the regulating device further includes that vertical angle adjusts section and upper groove body, the upper slot Upper hopper chute is set in vivo, and the vertical angle adjusts section for fan-shaped trough body structure and including multiple fan-shaped subsegments, these fan-shaped subsegments It is from top to bottom successively flexibly connected and can be overlapped gathering, under vertical angle adjusting section the lowermost sector subsegment connection is described Sliding slot inner end, the fan-shaped subsegment that the vertical angle adjusts section the top connect the upper hopper chute lower end, on the upper groove body End connects the Ding Ju mechanism, and the Ding Ju mechanism drives the upper groove body to adjust around the vertical angle in raising or decline Section rotation, and the vertical angle is made to adjust the fan-shaped subsegment expansion of section or collapse, to make the upper hopper chute and the downslide Slot forms predetermined angle.
2. a kind of upper hopper chute vertical angle regulating device based on landslide physical model test as described in claim 1, special Sign is: two fan shape baffles that the sector subsegment includes curved plate and is oppositely arranged, the two fan shape baffle lower end difference Vertically connect the curved plate both ends, all sector subsegments width of the fan shape baffle and the fan shape baffle from top to bottom Radius be gradually increased, curved plate bottom surface both ends are respectively provided with one first annulus, and the upper end of the fan shape baffle is equipped with The hinge hole of hinge hole, all sector subsegments be aligned and is packed into that pin shaft is hinged, and two first annulus of each fan-shaped subsegment divide Two first annulus of adjacent fan-shaped subsegment are not connected with two connecting ropes, the fan-shaped subsegment that the vertical angle adjusts section the top is solid Surely it is connected to the upper hopper chute lower port, the vertical angle adjusts section the lowermost sector subsegment and is fixedly connected on the downslide Slot inner end.
3. a kind of upper hopper chute vertical angle regulating device based on landslide physical model test as claimed in claim 2, special Sign is: it includes the nine fan-shaped subsegments, the angle of the fan shape baffle of each fan-shaped subsegment that the vertical angle, which adjusts section, It is 10 °.
4. a kind of upper hopper chute vertical angle regulating device based on landslide physical model test as claimed in claim 2, special Sign is: the vertical angle adjusts section the lowermost sector subsegment and is equipped with two second annulus, and the two connection annulus are set respectively It is placed in the lateral surface lower end of two fan shape baffles, the lower end of two lateral surface of upper groove body is respectively provided with a third annulus, ipsilateral Second annulus connected with the third annulus with spring.
5. a kind of upper hopper chute vertical angle regulating device based on landslide physical model test as claimed in claim 2, special Sign is: all fan shape baffle upper ends are equipped with disk, and the center of circle of the disk is equipped with the hinge hole.
6. a kind of upper hopper chute vertical angle regulating device based on landslide physical model test as described in claim 1, special Sign is: vertical angle adjusting section upper port section is identical with the lower port section of the upper hopper chute and the two alignment is welded Connection, vertical angle adjusting section lower port section is identical with gliding groove interior side port section and the two alignment welding connects It connects.
7. a kind of upper hopper chute vertical angle regulating device based on landslide physical model test as described in claim 1, special Sign is: the Ding Ju mechanism is hydraulic jack, and hydraulic jack lower end axis is articulated on the pedestal, upper shaft hinge It is connected to upper groove body upper end bottom.
CN201810912386.1A 2018-08-10 2018-08-10 Upper chute vertical angle adjusting device based on landslide physical model test Expired - Fee Related CN109213206B (en)

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CN201810912386.1A CN109213206B (en) 2018-08-10 2018-08-10 Upper chute vertical angle adjusting device based on landslide physical model test

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113753582A (en) * 2021-08-30 2021-12-07 彩虹(合肥)液晶玻璃有限公司 Over-and-under type removes sampling car

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102928572A (en) * 2012-10-26 2013-02-13 中国地质大学(武汉) Hydraulic-lifting self-weight loading device for landslide physical model test
CN104020262A (en) * 2014-06-23 2014-09-03 重庆大学 Laboratory experiment system for simulating sliding process of landslide along three-dimensional terrain
CN105225592A (en) * 2015-10-08 2016-01-06 西南交通大学 A kind of collapse rock-fall model test apparatus
CN105467099A (en) * 2015-12-30 2016-04-06 中国地质大学(武汉) Combined type landslide physical model test device
CN106124739A (en) * 2016-09-01 2016-11-16 中国地质大学(武汉) A kind of multifunctional high speed remotely comes down dynamic process physical model test device
CN106885894A (en) * 2017-03-07 2017-06-23 西南科技大学 High-locality landslide model assay systems

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102928572A (en) * 2012-10-26 2013-02-13 中国地质大学(武汉) Hydraulic-lifting self-weight loading device for landslide physical model test
CN104020262A (en) * 2014-06-23 2014-09-03 重庆大学 Laboratory experiment system for simulating sliding process of landslide along three-dimensional terrain
CN105225592A (en) * 2015-10-08 2016-01-06 西南交通大学 A kind of collapse rock-fall model test apparatus
CN105467099A (en) * 2015-12-30 2016-04-06 中国地质大学(武汉) Combined type landslide physical model test device
CN106124739A (en) * 2016-09-01 2016-11-16 中国地质大学(武汉) A kind of multifunctional high speed remotely comes down dynamic process physical model test device
CN106885894A (en) * 2017-03-07 2017-06-23 西南科技大学 High-locality landslide model assay systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113753582A (en) * 2021-08-30 2021-12-07 彩虹(合肥)液晶玻璃有限公司 Over-and-under type removes sampling car

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