CN107131980A - The direct stress that a kind of small rotary tank prepares mud-rock flow determines device - Google Patents
The direct stress that a kind of small rotary tank prepares mud-rock flow determines device Download PDFInfo
- Publication number
- CN107131980A CN107131980A CN201710454332.0A CN201710454332A CN107131980A CN 107131980 A CN107131980 A CN 107131980A CN 201710454332 A CN201710454332 A CN 201710454332A CN 107131980 A CN107131980 A CN 107131980A
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- CN
- China
- Prior art keywords
- weighing sensor
- rotating trough
- bracket
- cushion block
- direct stress
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
Abstract
The direct stress for preparing mud-rock flow the present invention relates to a kind of small rotary tank determines device, including weighing sensor, support, film, hollow conducting slip ring and data collecting instrument.The instrument connection bigger than cushion block size is provided with the periphery center in circular rotating trough, is covered by the film more than test hole area, border and the rotating trough inwall adhering and sealing of film；Cushion block is built into instrument connection, cushion block is fixed on the measurement end of elongated weighing sensor, and the length direction of weighing sensor is consistent with the axis of the rotating trough；The outside of instrument connection sets U-bracket, and rotating trough anchor ring is fixed in two vertical edge upper ends of U-bracket；Wire is connected through hollow conducting slip ring with outside data collecting instrument.The present invention realizes sealing, turn avoid additional force, realizes that the low direct stress (less than 5kPa) of rotating trough is determined, high with measurement accuracy, sealing is reliable and stable, small volume, the features such as simple in construction, easy to make, cost is relatively low.
Description
Technical field
The direct stress for preparing mud-rock flow the present invention relates to a kind of small rotary tank determines device, belongs to Geotechnical Engineering
With marine engineering geology field.
Background technology
Small rotary tank (below rotating trough diameter 0.5m) can be used for making mud-rock flow.In mud-rock flow bottom and rotation
The place of tank bottom land contact, the effect due to mud-rock flow to bottom land can produce certain direct stress.The direct stress and mud-rock flow
Etching effect it is closely related with shock effect, be an important physical parameter.
Small rotary tank has a simple in construction, easy to make, lower-cost feature, but just because of its size it is small,
Direct stress is low in groove, causes the measure device of its direct stress and has certain particularity, there is presently no for this direct stress
Determine device.
It is the external direct stress for being directed to large-scale rotating trough (rotating trough diameter 2.5m) that similar direct stress, which determines device,
Device is determined, but because its construction is complicated, volume is big, is not advantageously mounted on small rotary tank, especially the title positioned at bottom land
Sensor force transferring part cushion block is retransmitted through hole on rotating trough wall, the gap seals of hole border are made using colloid or grease, can be produced
Raw additional force effect on a sensor, causes measurement accuracy to decline.
For small rotary tank, because direct stress is natively small (less than 5kPa), this newly-increased additional force is acted on
On sensor, cause the basic indeterminacy of direct stress.
There is presently no the measure device for being equipped with direct stress for domestic small rotary water tank device at present.
The content of the invention
The technical problem to be solved in the invention is：For the small rotary flume experiment device of existing making mud-rock flow
(below rotating trough diameter 0.5m), there is presently no the report that direct stress determines device；Small rotary bottom of gullet direct stress
Low (less than 5kPa), it is desirable to which normal stress measurement precision is high, and can not align stress determination generation for sealed material or device
Any interference；Direct stress determination sensor volume must be small, and needs to be fixedly secured on rotating trough；The rotation of rotating trough
Direct stress determination sensor is caused to be directly connected to data collecting instrument.
The present invention takes following technical scheme：
A kind of small rotary tank prepare mud-rock flow direct stress determine device, including weighing sensor, support, film,
Hollow conducting slip ring and data collecting instrument.
The instrument connection bigger than cushion block size is provided with the periphery center in circular rotating trough, by more than test hole face
Long-pending film covering, the border of film and circular rotating trough inwall adhering and sealing.
Cushion block and not engaged test hole are built into the instrument connection, cushion block is fixed on the survey of elongated weighing sensor
End is measured, the length direction of weighing sensor is consistent with the axis of the circular rotating trough.
Outside positioned at the instrument connection sets U-bracket, and the circumference of instrument connection is fixed in two vertical edge upper ends of U-bracket
The rotating trough anchor ring of both sides, the bottom of U-bracket passes through towards the axially-extending of circular rotating trough in elongated surfaces
Pad is mutually fixed with the weighing sensor other end fixing end.
The wire of the weighing sensor is connected through hollow conducting slip ring with outside data collecting instrument.
Further, the weighing sensor contains force transferring part cushion block, and cushion block is weighed by being bonded or being bolted to
In sensor measurement end.It is 0~150gf that weighing sensor, which recommends range, recommended size be 41mm × 7mm × 5mm (it is long × wide ×
It is thick).
Further, due to having water in rotating trough, so must seal, the sealing film size is more than circular revolve
Turn square opening on flume wall, cover cushion block, and bottom surface and the upper surface of cushion block of film, border and the annular shape of film
Rotating trough inwall silica gel adhering and sealing；Thin film flexible is big, and thickness is not more than 0.1mm, and its influence for aligning strain measurements can
To ignore, that is, sealing is realized, turn avoid encapsulating method weighing sensor force transferring part cushion block and the rotation of large-scale tank
Turn additional force caused by the colloid or grease seal of tank.
Further, length and weighing sensor of the bottom of the U-bracket towards the axially-extending of rotating trough
Length is corresponding, and bolt fixes three through the bottom surface extension site of U-bracket, pad, weighing sensor fixing end, described
U-bracket two ends are adhesively fixed along rotating trough tangential direction extension site with rotating trough anchor ring silica gel.
Further, using the signal transfer mode of hollow conducting slip ring.Rotating trough where sensor is in rotation
Motion state, this signal is passed to the data collecting instrument being connected with computer, can be using wired or wirelessly.Nothing
The signal transfer mode of line, it is necessary to equipment is complicated, volume is big, cost is high, is not easy to small rotary tank equipment and uses.The hair
Bright use weighing sensor wire is connected through hollow conducting slip ring with data collecting instrument, and hollow conducting slip ring solves weighing and sensing
The line that device wire rotates with rotating trough is around problem, by electric signal from the sensor conductive rotated together with rotating trough to fixation
In the data collecting instrument of experiment table top.Its additional noise belongs to acceptable scope for the influence of measurement accuracy；Recommend
Hollow conducting slip ring is 8 lines.Hollow conducting slip ring equipment is simple, small volume, low cost, and signal passes through hollow conducting slip ring
Noise intensity afterwards can be controlled in certain limit, meets measurement accuracy requirement.
Further, data collecting instrument is powered for weighing sensor, while the electric signal of weighing sensor is converted into meter
The acceptable signal of calculation machine.
The beneficial effects of the present invention are：
1) (less than 5kPa) the need for measurement accuracy can meet research, the influence of the additional external force such as gluing can be excluded, is selected
With appropriate sensor (precision 0.1%), measurement error is less than 10Pa.
2) simple in construction, easy to make, cost is relatively low.
3) weighing sensor and the entirely appropriate small rotary tank of support volume are used.
4) seal reliable and stable, and encapsulant (film) influences small to mud-rock flow movement.
Brief description of the drawings
Fig. 1 is that the direct stress of the present invention determines the overall structure diagram of device.
Fig. 2 is that the direct stress of the present invention determines the partial structurtes front view of device.
Fig. 3 is that the direct stress of the present invention determines the partial structurtes left view of device.
In figure, 1. rotating troughs, 2. weighing sensors, 3. cushion blocks, 4. films, 5. supports, 6. bolts, 7. is hollow conductive sliding
Ring, 8. wires, 9. data collecting instruments, 10. computers, 11. power transmission shafts, 12. bearings, 13. motors, 14. background disks.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.
Referring to Fig. 1, the direct stress that a kind of small rotary tank prepares mud-rock flow determines device, including including weighing sensor
2nd, support 5, film 4, hollow conducting slip ring 7 and data collecting instrument 9.
Rotating trough 1 is annular shape, and material is lucite, silica gel sealing between front and rear covers and ring-type rotating trough wall.
Have powerful connections disk 14, bearing 12, motor 13 are installed on power transmission shaft 11.
The instrument connection bigger than the size of cushion block 3 is provided with the periphery center in circular rotating trough 1, by more than instrument connection
The film covering 4 of area, the border of film 4 and the circular inwall adhering and sealing of rotating trough 1.
Cushion block 3 and not engaged test hole are built into the instrument connection, cushion block 3 is fixed on elongated weighing sensor 2
Measurement end, the length direction of weighing sensor 2 is consistent with the axis of the circular rotating trough 1.
Referring to Fig. 2, outside positioned at the instrument connection sets U-bracket 5, and survey is fixed in two vertical edge upper ends of U-bracket 5
The anchor ring of rotating trough 1 of the circumferential both sides of prospect hole, bond area is big so that relative between support and rotating trough outer surface
Displacement is minimum, is conducive to the stability of U-bracket 5.The bottom of U-bracket 5 towards circular rotating trough 1 axially-extending,
Mutually fixed with the other end fixing end of weighing sensor 2 by pad in elongated surfaces.
The wire 8 of the weighing sensor 2 is connected through hollow conducting slip ring 7 with outside data collecting instrument 9.
Referring to Fig. 3, the weighing sensor 2 is strip, there are two apertures centre, and cantilever beam structure contains force transferring part pad
There is pad in the middle of block 3 and wire 8, the fixing end of weighing sensor 2 and support, make weighing sensor hanging, form overhanging beam measurement
Structure.Weighing sensor recommends range to be 0~150gf, and recommended size is 41mm × 7mm × 5mm (length × width x thickness).Cushion block can
Be bonded or be bolted on weighing sensor, material can be hard plastic, the size of cushion block for 15mm × 10mm × 7mm (it is long ×
Width x thickness).
Referring to Fig. 2, the size of film 4 is more than square opening on the wall of rotating trough 1, border and the rotating trough inwall silicon of film 4
Glue sticking is sealed.Film 1 is flexible big, and its influence for aligning strain measurements can be ignored；Thickness is not more than 0.1mm, thick
Degree is small, and its influence produced to mud-rock flow movement can be ignored.Film is to realize sealing, turn avoid large-scale tank
Additional force caused by colloid or the grease seal sealing of encapsulating method weighing sensor force transferring part cushion block and rotating trough.
Referring to Fig. 1, the hollow conducting slip ring 7 at least needs have 4 lines, recommends 8 lines.
Referring to Fig. 1, the data collecting instrument 9 is recommended to have more than 2 passages, is powered with amplifier function and to sensor
Function.
Referring to Fig. 1, the computer 10 recommends have real-time display function.
Referring to Fig. 1, principle explanation：The power that weighing sensor 2 is measured is made up of two parts, and a part is weighing sensor 2
The gravity and its centrifugal force of end, another part are mud-rock flows to the cushion block 3 (face size 15mm × 10mm) of weighing sensor 2
Pressure.The former can be weeded out by demarcation, just obtain the latter, the i.e. pressure of cushion block 3.It is small in view of the face size of cushion block 3,
It is to be distributed in whole end face to think direct stress in the calculation, therefore by end force divided by face area, is just obtained on end face
Direct stress, i.e. mud-rock flow are in the direct stress to bottom land.
Above example is the preferred embodiment of the application, and one of ordinary skill in the art can also enter on this basis
The various conversion of row or improvement, on the premise of the design of the application always is not departed from, these conversion or improvement should all belong to this Shen
Within the scope of please being claimed.
Claims (5)
1. the direct stress that a kind of small rotary tank prepares mud-rock flow determines device, it is characterised in that：
Including weighing sensor (2), U-bracket (5), film (4), hollow conducting slip ring (7) with data collecting instrument (9)；
It is provided with the periphery center of circular rotating trough (1) than the cushion block (3) big instrument connection of size, by more than test hole face
(4) long-pending film covers, the border of film (4) and circular rotating trough inwall adhering and sealing；
(3) and not engaged test hole in the instrument connection it is built into cushion block, (2) (3) cushion block be fixed on elongated weighing sensor
Measurement end, axis of the length direction of weighing sensor (2) with the circular rotating trough (1) is consistent；
(5) outside positioned at the instrument connection set U-bracket, and the circumference of instrument connection is fixed in the two vertical edge upper ends of U-bracket (5)
The rotating trough of both sides (1) anchor ring, axially-extending of the bottom of U-bracket (5) towards circular rotating trough (1), in elongated surfaces
It is upper that by pad, (2) other end fixing end is mutually fixed with the weighing sensor；
(9) (7) the wire of the weighing sensor be connected through hollow conducting slip ring with outside data collecting instrument.
2. the direct stress that a kind of small rotary tank according to claim 1 prepares mud-rock flow determines device, its feature exists
In (3) (2) the weighing sensor contain force transferring part cushion block, and (2) cushion block (3) by being bonded or being bolted to weighing sensor
In measurement end, (2) weighing sensor is strip, there are two apertures, cantilever beam structure in centre.
3. the direct stress that a kind of small rotary tank according to claim 1 prepares mud-rock flow determines device, its feature exists
In the film is (4) flexible big, and thickness is not more than 0.1mm.
4. the direct stress that a kind of small rotary tank according to claim 1 prepares mud-rock flow determines device, its feature exists
In (7) the hollow conducting slip ring at least needs have 4 lines.
5. the direct stress that a kind of small rotary tank according to claim 1 prepares mud-rock flow determines device, its feature exists
In the bottom of the U-bracket (5) is corresponding towards the length of the axially-extending of rotating trough and the length of weighing sensor, bolt
Three is fixed through U-bracket bottom surface extension site (5), pad, weighing sensor fixing end, the U-bracket (5) two
End is adhesively fixed along rotating trough tangential direction extension site with rotating trough anchor ring silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710454332.0A CN107131980A (en) | 2017-06-09 | 2017-06-09 | The direct stress that a kind of small rotary tank prepares mud-rock flow determines device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710454332.0A CN107131980A (en) | 2017-06-09 | 2017-06-09 | The direct stress that a kind of small rotary tank prepares mud-rock flow determines device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107131980A true CN107131980A (en) | 2017-09-05 |
Family
ID=59733970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710454332.0A Pending CN107131980A (en) | 2017-06-09 | 2017-06-09 | The direct stress that a kind of small rotary tank prepares mud-rock flow determines device |
Country Status (1)
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| CN (1) | CN107131980A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991015A (en) * | 2018-01-15 | 2018-05-04 | 上海交通大学 | A kind of small rotary sink prepares the hydraulic pressure mensuration system of mud-rock flow |
| CN110133216A (en) * | 2019-05-15 | 2019-08-16 | 枣庄学院 | Measure the experimental provision that sediment consolidation additional stress is buried in mud-rock flow silt |
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| US4840068A (en) * | 1988-03-14 | 1989-06-20 | Mayhew Jr John D | Pipe pressure sensor |
| CN103512685A (en) * | 2013-10-11 | 2014-01-15 | 浙江大学 | Sealing force testing device used for studying damping seal prerotation effect |
| CN104155049A (en) * | 2013-05-15 | 2014-11-19 | 深圳市深科医疗器械技术开发有限公司 | Apparatus for detecting pressure of fluid in a flexible pipe |
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| CN103512685A (en) * | 2013-10-11 | 2014-01-15 | 浙江大学 | Sealing force testing device used for studying damping seal prerotation effect |
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| US20160047724A1 (en) * | 2014-08-18 | 2016-02-18 | Korea Institute Of Geoscience And Mineral Resource | Test apparatus for early landslide detection fully-connected with pore water pressure, surface displacement and shear surface |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991015A (en) * | 2018-01-15 | 2018-05-04 | 上海交通大学 | A kind of small rotary sink prepares the hydraulic pressure mensuration system of mud-rock flow |
| CN110133216A (en) * | 2019-05-15 | 2019-08-16 | 枣庄学院 | Measure the experimental provision that sediment consolidation additional stress is buried in mud-rock flow silt |
| CN110133216B (en) * | 2019-05-15 | 2022-01-18 | 枣庄学院 | Experimental device for measuring consolidation additional stress of sediment buried in debris flow |
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