CN103852363B - Frequency and amplitude adjustable mud sample vibration device - Google Patents
Frequency and amplitude adjustable mud sample vibration device Download PDFInfo
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- CN103852363B CN103852363B CN201410096110.2A CN201410096110A CN103852363B CN 103852363 B CN103852363 B CN 103852363B CN 201410096110 A CN201410096110 A CN 201410096110A CN 103852363 B CN103852363 B CN 103852363B
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Abstract
The invention relates to a frequency and amplitude adjustable mud sample vibration device which at least comprises a vibrating mechanism and a material loading and unloading mechanism. The sample vibration device also comprises an amplitude modulation mechanism and a frequency modulation unit, wherein the amplitude modulation mechanism comprises an amplitude modulation swing board, an amplitude modulation wedge block, an amplitude modulation handle, a lead screw, a lead screw support, an amplitude modulation support and an amplitude modulation scale; the frequency modulation unit is a stepping motor used for frequency modulation; the stepping motor is arranged on the amplitude modulation swing board; the vibrating mechanism comprises a belt, a belt pulley, a start vibration cam, an ejector rod, an impact rod and an impact block; the belt pulley is coaxial with the start vibration cam; the belt pulley is connected with the stepping motor through the belt; the belt pulley is embedded at one end of a sleeve on the right side of the amplitude modulation swing board; the middle of the sleeve is arranged on a wedge surface of the amplitude modulation wedge block; the material loading and unloading mechanism is positioned on the top of the whole device and at least comprises a material disc and a material disc bracket connected with the ejector rod and the impact rod. The dynamic characteristics of soil and dynamic load conditions needed by soil sample manufacturing are fully considered, and frequency modulation and amplitude modulation of mud sample vibration and vibration frequency control can be realized.
Description
Technical field
The invention belongs to geologic hazard model test field, relate to a kind ofly make that relevant mud sample vibrating device, particularly a kind of vibration number are controlled to mud sample in landslide physical model test, vibration frequency and the adjustable mud sample vibrating device of Oscillation Amplitude.
Background technology
Landslide is the geologic hazard that harm is serious in a kind of global range, increased along with Human dried bloodstains, and Landslide Hazards also becomes and more and more takes place frequently, and the loss caused is also increasing.In order to effectively prevent and treat landslide, Chinese scholars has carried out a large amount of experimental studies to landslide, and wherein landslide physical model test is exactly wherein a kind of effective research means.The theoretical foundation of landslide physical model test is similarity theory, and wherein the material of soil sample is similar plays vital effect in landslide physical model test.Therefore, the Dynamic Characteristics Test carrying out soil sample in early stage is the smooth guarantee of follow-up test.
The factor of the kinematic behavior of impact soil is a lot.The major influence factors affecting the anti-liquefaction property of saturated soil has: soil nature condition, as compaction rate and the particle characteristic of soil; Initial stress condition, as dynamic load apply before the soil body the static stress state of bearing; Live load condition, as live load waveform, amplitude, frequency, duration and action direction etc.
Vibrating device of the prior art is various informative, but the rare vibrating device being specifically designed to landslide physical model test, the requirement of test to the kinematic behavior of soil cannot be met.And usually cannot take into account amplitude modulation, frequency modulation and vibration number controlling functions for the vibrating device of landslide physical model test, or complete these functions by the electrical structure of complexity, to physical construction and circuit accuracy requirement high, stability is more weak.
Summary of the invention
In order to solve the deficiencies in the prior art, the invention provides a kind of frequency and amplitude adjustable mud sample vibrating device that the making of mud sample is relevant in landslide physical model test, the technical matters of above-mentioned existence can be overcome, concrete finger is in the making of mud sample and process of the test, physical construction is utilized to realize the particular requirement of mud sample vibration needed for landslide physical model test, take into full account live load condition required in native kinematic behavior and soil sample making, amplitude, frequency and the requirement mud sample shaking table on the duration can have been met.
The technical scheme that the present invention adopts for its technical matters of solution is: at least involving vibrations mechanism and material handling mechanism, also comprises amplitude modulation mechanism and frequency modulation unit; Amplitude modulation mechanism comprises amplitude modulation pendulum plate, amplitude modulation voussoir, amplitude modulation handle, screw mandrel, screw mandrel bearing, amplitude modulation bearing and amplitude modulation scale; Frequency modulation unit is a stepper motor for frequency modulation, and stepper motor is arranged on amplitude modulation pendulum plate; Vibrating mechanism comprises belt, belt pulley, opens the cam that shakes, push rod, impact bar and impact block, belt pulley and Qi Zhen cam coaxial, belt pulley is connected by belt with stepper motor, and belt pulley is embedded in the sleeve one end on the right side of amplitude modulation pendulum plate, rests on the wedge surface of amplitude modulation voussoir in the middle part of sleeve; Material handling mechanism is positioned at the top of whole device, the material disc support at least comprising material disc and be connected with impact bar with push rod.
By regulating the rotating speed of stepper motor and rotating the number of turns, realize frequency modulation and vibration number controlling functions.
In described amplitude modulation mechanism, amplitude modulation handle is connected with screw mandrel, and screw mandrel interts in amplitude modulation voussoir, and amplitude modulation voussoir supports the right-hand member of amplitude modulation pendulum plate, open the cam axle center that shakes put the sleeve of plate right-hand member by amplitude modulation and be connected with amplitude modulation voussoir outer contour, the axle of amplitude modulation pendulum plate left end is inserted in amplitude modulation bearing; Amplitude modulation handle strip movable wire bar rotates, and screw mandrel drives amplitude modulation voussoir to move left and right, and makes amplitude modulation put the Level Change of plate right-hand member and belt pulley, thus changes the contact height opening shake cam and push rod, reach the object of amplitude modulation.
In described vibrating mechanism, push rod vertically interts in two slide blocks, and push rod lower end is embedded with high hardness wear-resisting ball; Impact bar and impact block are distributed in push rod two ends, in the slide block that impact bar interts above impact block; Open the cam face that shakes and be coated with hard wear resistant material; Belt pulley transmits the power of stepper motor, drive is opened the cam that shakes and is rotated, open the outer contour of the cam that shakes by push rod jack-up, now impact bar and material handling mechanism are together with push rod jack-up, and when reaching the sudden change outline line opening the cam that shakes, push rod is unsettled, the movement of falling object is become under gravity together with material charging crane, after the certain distance of whereabouts, impact bar clashes into impact block thereunder, completes a vibration period.
Described material handling mechanism is at the top of whole device, wherein, material disc is arranged on the top of material disc support, right-hand member is connected with material disc stand hinge by material disc rotating shaft, material disc left end is provided with material disc buckle and material disc handle, breaking material disc buckle post-tensioning animal charging tray handle into two with one's hands makes material disc around material disc axis of rotation, makes material disc overturn discharging; Material disc buckle, with Self-resetting spring, securely snaps together material disc and material disc support during vibration work.
The beneficial effect that the present invention has compared to prior art is:
(1) the present invention has taken into full account live load condition required in native kinematic behavior and soil sample making, can meet the regulable control requirement of vibration frequency, Oscillation Amplitude and vibration number simultaneously;
(2) frequency modulation function of the present invention and vibration number controlling functions are realized with the rotation number of turns by the rotating speed of control step motor, control accurately reliably;
(3) the amplitude modulation mechanism structure in the present invention is simplified, and amplitude modulation is convenient to operation, can be located by scale, ensure that the accurate of adjusting range;
(4) cam contour in the present invention can redesign replacement as required, to obtain different vibrational waveforms;
(5) material disc in the present invention is hinged on material disc support by material disc rotating shaft, easily can overturn discharging, by material disc buckle, material disc and support is tightened to one, does not affect vibrating effect during vibration;
(6) compact overall structure of the present invention, movement parts all encapsulates with casing, the security of operation of energy assurance device and noise isolation requirement.
Accompanying drawing explanation
Fig. 1 is one-piece construction front elevation;
Fig. 2 is one-piece construction axonometric drawing;
Fig. 3 is inner structure axonometric drawing;
Fig. 4 is amplitude modulation mechanism axonometric drawing;
Fig. 5 is principle of work kinematic sketch;
Fig. 6 opens the cam scheduling figure that shakes;
In figure: 1-material disc buckle, 2-material disc is shaken hands, 3-material disc, 4-material disc support, the rotating shaft of 5-material disc, 6-casing, 7-transparent form, 8-impact block, 9-push rod, 10-vertical supporting plate, 11-amplitude modulation handle, 12-screw mandrel bearing, 13-integral support, 14-screw mandrel, 15-amplitude modulation voussoir, 16-belt pulley, 17-belt, 18-base plate, 19-amplitude modulation bearing, 20-amplitude modulation pendulum plate, 21-stepper motor, 22-open the cam that shakes, 23-impact bar, 24-slide block, 25-amplitude modulation scale, 26-back up pad reinforcement.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figures 1 to 4, the present invention includes vibrating mechanism and material handling mechanism, it is characterized in that: also comprise amplitude modulation mechanism and frequency modulation unit; Amplitude modulation mechanism comprises amplitude modulation pendulum plate 20, amplitude modulation voussoir 15, amplitude modulation handle 11, screw mandrel 14, screw mandrel 14 bearing 12, amplitude modulation bearing 19 and amplitude modulation scale 25; Frequency modulation unit is a stepper motor 21 for frequency modulation, and stepper motor 21 is arranged on amplitude modulation pendulum plate 20; Vibrating mechanism comprises belt 17, belt pulley 16, opens the cam 22 that shakes, push rod 9, impact bar 23 and impact block 8, belt pulley 16 and Qi Zhen cam 22 coaxial, belt pulley 16 is connected by belt 17 with stepper motor 21, belt pulley 16 is embedded in the sleeve one end on the right side of amplitude modulation pendulum plate 20, rests on the wedge surface of amplitude modulation voussoir 15 in the middle part of sleeve; Material handling mechanism is arranged on the top of whole device, and be made up of material disc 3, material disc support 4, material disc handle 2, material disc buckle 1 and material disc rotating shaft 5, material disc support 4 is connected with impact bar 23 with push rod 9.
In described vibrating mechanism, push rod 9 vertically interts in two slide blocks 24, and push rod 9 lower end is embedded with high hardness wear-resisting ball; Impact bar 23 and impact block 8 are distributed in push rod 9 two ends, in the slide block 24 that impact bar 23 interts above impact block 8; Open cam 22 surface that shakes and be coated with hard wear resistant material; Belt pulley 16 transmits the power of stepper motor 21, drive is opened the cam 22 that shakes and is rotated, open the outer contour of the cam 22 that shakes by push rod 9 jack-up, now impact bar 23 and material handling mechanism are together with push rod 9 jack-up, and when reaching the sudden change outline line opening the cam 22 that shakes, push rod 9 is unsettled, the movement of falling object is become under gravity together with material charging crane, after the certain distance of whereabouts, impact bar 23 clashes into impact block 8 thereunder, completes a vibration period.
Described material handling mechanism is at the top of whole device, wherein, material disc 3 is arranged on the top of material disc support 4, right-hand member is by material disc rotating shaft 5 and material disc support 4 chain connection, material disc 3 left end is provided with material disc buckle 1 and material disc handle 2, breaking material disc buckle 1 post-tensioning animal charging tray handle 2 into two with one's hands makes material disc 3 rotate around material disc rotating shaft 5, makes material disc 3 overturn discharging; Material disc buckle 1, with Self-resetting spring, securely snaps together material disc 3 and material disc support 4 during vibration work.
In the present embodiment, integral support 13 supports whole device; Base plate 18 is arranged on above integral support 13, for installing amplitude modulation bearing 19, screw mandrel bearing 12 and amplitude modulation scale 25, supports amplitude modulation voussoir 15 simultaneously; Vertical supporting plate 10 is arranged on base plate 18, and rear portion has back up pad reinforcement 26 to strengthen its structural strength, anterior installation slide block 24 and impact block 8; Casing 6 covers all motions beyond material handling mechanism and parts, play the effect of security protection and noise isolation, its upper end has the insert port of push rod 9 and impact bar 23, right side has the access port of amplitude modulation handle 11, front panel is an openable transparent form 7, for observing amplitude modulation position and duty
In the present embodiment, stepper motor 21 is connected with an external control circuit, is regulated the rotating speed of stepper motor 21 and rotated the number of turns to realize frequency modulation and vibration number controlling functions by external control circuit.
Open the cam 22 that shakes can take different shapes in different experiments.In the present embodiment, the outline evolute functional expression opening the cam 22 that shakes is: θ is in 0 to pi/2 scope, and outline evolute functional expression is y=0; θ is at pi/2 within the scope of π, and outline evolute functional expression is
peak swing and cam phase relation are shown in Fig. 6.As shown in Figure 4, amplitude modulation mechanism adjusts amplitude by rotating amplitude modulation handle 11, amplitude modulation handle 11 is connected with screw mandrel 14, screw mandrel 14 interts in amplitude modulation voussoir 15, amplitude modulation voussoir 15 supports the right-hand member of amplitude modulation pendulum plate 20, amplitude modulation pendulum plate 20 right-hand member is connected with opening the cam 22 that shakes by belt pulley 16, opens cam 22 axle center that shakes and is connected with amplitude modulation voussoir 15 outer contour by belt pulley 16, and the axle of amplitude modulation pendulum plate 20 left end is inserted in amplitude modulation bearing 19; Amplitude modulation handle 11 drives screw mandrel 14 to rotate, and screw mandrel 14 drives amplitude modulation voussoir 15 to move left and right, and makes amplitude modulation put the Level Change of plate 20 right-hand member and belt pulley 16, thus changes the contact height opening shake cam 22 and push rod 9, reaches the object of amplitude modulation.
The process that application the present invention carries out the vibration of mud sample is:
(1) arrange vibration parameters: the vibration parameters determining required test or making mud sample, involving vibrations frequency, Oscillation Amplitude and vibration number, vibration frequency and vibration number are inputted by external control circuit control step motor 21; Oscillation Amplitude is arranged by regulating amplitude modulation handle 11, rotate amplitude modulation handle 11, drive amplitude modulation voussoir 15 to move left and right the predeterminated position of amplitude modulation scale 25 instruction, after amplitude modulation completes, amplitude modulation handle 11 is pulled down, in order to avoid vibration or collision change the amplitude regulated, also can avoid hindering discharging operations;
(2) mud sample loads: material disc 3 is turned to the position of fitting with material disc support 4, checks that material disc buckle 1 is clamped on material disc 3 on material disc support 4; Mud sample to be vibrated is loaded in material disc 3, and the charging capacity of mud sample is no more than the outer of material disc 3;
(3) mud sample vibration: adjust parameter and after having loaded mud sample, open external control circuit and stepper motor 21 is rotated, device press setup parameter and vibrated mud sample; As shown in Figure 5, stepper motor 21 by belt 17 and belt pulley 16 power transmission to opening the cam 22 that shakes, open the cam 22 that shakes and rotate counterclockwise, in the rotation process of a week, in the last period, push rod 9 can not be touched; As shown in Fig. 6 dotted line, setting amplitude is less, and the unsettled time is longer, and the effective jack-up distance after contact is less, and amplitude is less; In unsettled process, material handling mechanism is supported by impact bar 23 and impact block 8; Turn to after profile contacts with push rod 9 when opening the cam 22 that shakes, be rotated further a push rod 9 together with whole material handling mechanism jack-up, after the revolution opening the cam 22 that shakes terminates, the sudden change of its outline make push rod 9 together with whole material handling mechanism unsettled and freely falling body, until impact bar 23 impinges upon impact block 8 produces vibration force and the vibration action that completes one-period; Open the cam 22 that shakes and continue cycle rotation, realize continuous print vibration, until stop when vibration number reaches setting value;
(4) mud sample unloading: after vibration terminates, closes external control circuit, follow-up charge device is placed on the right side of device, then material disc buckle 1 is broken into two with one's hands, pull-up material disc handle 2, makes material disc 3 rotate around material disc support 4, directly mud sample is poured in follow-up charge device after upset;
(5) cleaning materials charging tray 3: all motions except material handling mechanism are all encapsulated in casing 6 li, therefore material disc 3 is dried after directly rinsing with water.
Claims (2)
1. a frequency and amplitude adjustable mud sample vibrating device, at least involving vibrations mechanism and material handling mechanism, is characterized in that: also comprise amplitude modulation mechanism and frequency modulation unit; Amplitude modulation mechanism comprises amplitude modulation pendulum plate, amplitude modulation voussoir, amplitude modulation handle, screw mandrel, screw mandrel bearing, amplitude modulation bearing and amplitude modulation scale; Frequency modulation unit is a stepper motor for frequency modulation, and stepper motor is arranged on amplitude modulation pendulum plate; Vibrating mechanism comprises belt, belt pulley, opens the cam that shakes, push rod, impact bar and impact block, belt pulley and Qi Zhen cam coaxial, belt pulley is connected by belt with stepper motor, and belt pulley is embedded in the sleeve one end on the right side of amplitude modulation pendulum plate, rests on the wedge surface of amplitude modulation voussoir in the middle part of sleeve; Material handling mechanism is positioned at the top of whole device, the material disc support at least comprising material disc and be connected with impact bar with push rod; In described amplitude modulation mechanism, amplitude modulation handle is connected with screw mandrel, and screw mandrel interts in amplitude modulation voussoir, and amplitude modulation voussoir supports the right-hand member of amplitude modulation pendulum plate, open the cam axle center that shakes put the sleeve of plate right-hand member by amplitude modulation and be connected with amplitude modulation voussoir outer contour, the axle of amplitude modulation pendulum plate left end is inserted in amplitude modulation bearing; Amplitude modulation handle strip movable wire bar rotates, and screw mandrel drives amplitude modulation voussoir to move left and right, and makes amplitude modulation put the Level Change of plate right-hand member and belt pulley, thus changes the contact height opening shake cam and push rod, reach the object of amplitude modulation; In described vibrating mechanism, push rod vertically interts in two slide blocks, and push rod lower end is embedded with high hardness wear-resisting ball; Impact bar and impact block are distributed in push rod two ends, in the slide block that impact bar interts above impact block; Open the cam face that shakes and be coated with hard wear resistant material; Belt pulley transmits the power of stepper motor, drive is opened the cam that shakes and is rotated, open the outer contour of the cam that shakes by push rod jack-up, now impact bar and material handling mechanism are together with push rod jack-up, and when reaching the sudden change outline line opening the cam that shakes, push rod is unsettled, the movement of falling object is become under gravity together with material charging crane, after the certain distance of whereabouts, impact bar clashes into impact block thereunder, completes a vibration period; Described material handling mechanism is at the top of whole device, wherein, material disc is arranged on the top of material disc support, right-hand member is connected with material disc stand hinge by material disc rotating shaft, material disc left end is provided with material disc buckle and material disc handle, breaking material disc buckle post-tensioning animal charging tray handle into two with one's hands makes material disc around material disc axis of rotation, makes material disc overturn discharging; Material disc buckle, with Self-resetting spring, securely snaps together material disc and material disc support during vibration work.
2. frequency and amplitude according to claim 1 adjustable mud sample vibrating device, is characterized in that: by regulating the rotating speed of stepper motor and rotating the number of turns, realize frequency modulation and vibration number controlling functions.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410096110.2A CN103852363B (en) | 2014-03-14 | 2014-03-14 | Frequency and amplitude adjustable mud sample vibration device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410096110.2A CN103852363B (en) | 2014-03-14 | 2014-03-14 | Frequency and amplitude adjustable mud sample vibration device |
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| CN103852363A CN103852363A (en) | 2014-06-11 |
| CN103852363B true CN103852363B (en) | 2015-03-04 |
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| CN104765299B (en) * | 2015-02-03 | 2018-03-20 | 浙江捷昌线性驱动科技股份有限公司 | Exchange vibrations motor amplitude of vibration control method and control circuit and massage bed |
| CN105312424B (en) * | 2015-10-20 | 2017-07-18 | 上海交通大学 | Amplitude modulation swing die device |
| CN105196267B (en) * | 2015-10-21 | 2017-07-28 | 安徽江淮汽车集团股份有限公司 | Engine mounting stand |
| CN105776068B (en) * | 2016-04-29 | 2018-11-06 | 庄艺阳 | A kind of bearing self emptying type turns truck |
| CN112808574A (en) * | 2021-02-05 | 2021-05-18 | 何巧飞 | Screening device capable of automatically changing shaking frequency in real time |
| CN114225791B (en) * | 2021-12-21 | 2023-07-21 | 吉林建筑大学 | Coating blending device with shell powder |
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